earth observation Archives - British Geological Survey /tag/earth-observation/ World-leading geological solutions Wed, 29 Jul 2026 13:21:14 +0000 en-GB hourly 1 https://wordpress.org/?v=7.0.2 /wp-content/uploads/2020/03/cropped-BGS-favicon-logo-32x32.png earth observation Archives - British Geological Survey /tag/earth-observation/ 32 32 Space Geodesy Facility /geological-research/science-facilities/space-geodesy-facility/ Wed, 29 Jul 2026 13:21:14 +0000 /?page_id=124210 The post Space Geodesy Facility appeared first on British Geological Survey.

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Space Geodesy Facility

BGS Science Facilities

Satellite Laser Ranging at the BGS Space Geodesy Facility, Herstmonceux. Photo by Jon Fox

The Space Geodesy Facility (SGF) is located in Herstmonceux, East Sussex. It is part of an international network of geodetic observatories making the observations that help unlock the power of precise positioning technologies to enhance both our daily lives and our understanding of the processes driving global change.

Geodesy provides the underpinning layer of information that lets us know where we are on, under or above the surface of the Earth. This enables us to perform effective disaster and risk management, predicting where problems will happen and enhancing the quality of our response. Satellites that are critical to our understanding of the long-term processes influencing the climate rely on geodesy to provide the precise orbits that locate their observations in space and on the ground.

By measuring gravity and how it changes over time and place, geodesy can reveal the way mass is distributed and transported around the globe. For example, tectonic movement, polar ice melting or, at a smaller scale, groundwater depletion can all be monitored and their impacts assessed by watching the effect they have on gravity.

Find out more about this facility

Geodesy is the measurement of the size, shape, gravity field and rotation of the Earth and how these change over time.

Accurately timing short laser pulse return journeys to satellites carrying retro-reflector targets. Satellite laser ranging or SLR can achieve range measurements to a variety of different scientific satellites ranging in height from 300 km to 42 000 km to an accuracy of approximately 1 cm.

Measuring the acceleration due to gravity at the Earth’s surface can reveal the vertical motion of the Earth’s crust as well as mass changes above and below the instrument.

The SGF is an ILRS Analysis Centre and performs regular data analysis of the other geodetic techniques.

Many of the satellites measuring the Earth and its processes rely on precise orbital information, these critical missions are directly tracked by the SLR at SGF.

The many parts that make up the SGF include optical, electronic, software and mechanical components.

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GSNI project wins multiple awards at RegioStars event /news/gsni-project-wins-multiple-awards-at-regiostars-event/ Fri, 17 Oct 2025 10:26:12 +0000 /?p=119861 The AGEO project enjoyed a double success at the RegioStars awards, hosted at the European Commission in Brussels.

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The Geological Survey of Northern Ireland (GSNI) was the big winner at the this week. Their Atlantic Geohazard Risk Management (AGEO) project, supported by , emerged with two awards.

The RegioStars Awards have become Europe’s label of excellence for EU-funded projects that demonstrate the impact and inclusiveness of regional development. There were five categories of awards, in addition to the overall Public Choice Award. AGEO won in the ¼ø»ÆÊ¦˜A Green Europe’ category and was chosen from a five finalists, shortlisted from 266 entries. The AGEO project was also honoured with the ‘Public Choice’ award, voted on by just under 20 000 citizens from all across Europe. AGEO received around 2000 of the votes. 

The AGEO project brought together scientists, local communities and governments to address geohazards in the Atlantic region through citizen science, Earth observation and innovative risk management tools. By implementing five pilot citizens¼ø»ÆÊ¦™ observatories in the Atlantic region, the project demonstrated how to empower local communities to engage in early warning systems and climate challenges, working with local stakeholders at all levels.

The Citizens¼ø»ÆÊ¦™ Observatory in Northern Ireland (NI) was developed at the Giant¼ø»ÆÊ¦™s Causeway, where GSNI¼ø»ÆÊ¦™s Kieran Parker, senior geohazards geologist, and Dr Kirstin Lemon, science programme manager, worked closely with external partners and engaged comprehensively with a range of stakeholders.

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We are pleased to have come away with two awards at the RegioStars Awards for our AGEO project which brought together a number of stakeholders to help empower local communities to participate in early warning systems.

Dr Kirstin Lemon, GSNI Science Programme Manager.

Encouraged by the European Commission, the project partners are now exploring ways to develop the next stage for AGEO, hoping to bring the experiences of the project to a wider European audience.

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AI and Earth observation: BGS visits the European Space Agency /news/ai-and-earth-observation-bgs-visits-the-european-space-agency/ Wed, 02 Jul 2025 07:47:12 +0000 /?p=118127 The newest artificial intelligence for earth science: how ESA and NASA are using AI to understand our planet.

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The European Space Agency (ESA) has many offices around Europe but, as an Earth observation scientist myself, the Earth observation headquarters at ESA¼ø»ÆÊ¦™s (ESRIN) office in Frascati, just outside Rome, is the pinnacle!

ESRIN coordinates and manages the ground-based activities of ESA’s Earth observation missions: data acquisition and processing, and satellite communication. It is the home of innovation and management of software used across the agency, and houses ESA¼ø»ÆÊ¦™s records of legacy projects, with missions dating back to the 1970s. It also holds the largest archive of environmental data in Europe, coordinating over 20 ground stations and ground segment facilities across Europe.

Earth observation at ESRIN and BGS

ESA¼ø»ÆÊ¦™s Earth-observing activities include satellite missions that monitor many of our planet¼ø»ÆÊ¦™s natural processes, such as snow and ice cap accumulation and melt, wildfires, landslides, earthquakes and tectonic movements. It also tracks human-induced changes like city growth, deforestation and groundwater abstraction. Many of these processes and changes are also researched at BGS, using the data from these satellites alongside our expertise in geohazards and geological processes.

The typical challenge we face nowadays as Earth observation scientists is the sheer volume of data available to analyse ¼ø»ÆÊ¦” we have too much data to sift through manually. One avenue for allowing timely analyses of these large datasets is to use specific artificial intelligence (AI) models called foundation models.

What are foundation models?

Foundation models are designed to take in millions of pieces of data and find relationships between different datasets that we don¼ø»ÆÊ¦™t have the time to do manually. Additionally, if the model is trained on several images of the Earth through time, it can make predictions about how our planet might change in the future. For BGS research, this could be used to help provide advice on a multitude of crucial future geological hazards faced by countries around the world; for example, how our coasts may change with sea-level rise.

Last month, I had the pleasure of attending ESA¼ø»ÆÊ¦™s joint workshop with NASA on ¼ø»ÆÊ¦˜Foundation models for Earth observation at ESA ESRIN¼ø»ÆÊ¦™. We stayed near the Colli Albani volcanic complex, which has formed some of the beautiful hills and volcanic lakes surrounding this area, just south-east of Rome.

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Some of the ESA member state flags flying outside ESA ESRIN under stormy Italian skies. BGS © ¼ø»ÆÊ¦.

At the workshop

My job at BGS is to use both classical and newly devised methods to analyse satellite data and find patterns between the behaviour of the ground beneath us and our other geospatial datasets, and what this means for the people and surface infrastructure. This workshop was ideal for my role. I attended the sessions that focused on applications of AI models to real scenarios; on day one, sessions included using foundation models for various applications in earth sciences, weather prediction and climate science.

On day two, I attended a morning session on how scientists are adapting foundation models for geospatial and Earth observation tasks, which is exactly what I¼ø»ÆÊ¦™m aiming to do! In the late morning and afternoon, I had my poster presentation slot, where I showed how my team at BGS envisions using AI alongside Earth observation and BGS data. This includes our bedrock and superficial deposit maps created by our survey geologists, hazard susceptibility maps from our hazards specialists, and more. I also presented some of the machine learning (ML) tools BGS has developed so far to help with this task. I got talking to some really engaging researchers, learning a lot from the people I spoke to about what data works well in these models (and what doesn¼ø»ÆÊ¦™t!) and the field of AI in earth sciences as a whole. This was the most beneficial day to me as an early career scientist; talking to so many people from different organisations with different areas of expertise has been invaluable in my development as a scientist.

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Standing next to a poster by me and some members of my team entitled ¼ø»ÆÊ¦˜Using AI to analyse InSAR data and support geological interpretation¼ø»ÆÊ¦™. The poster describes various current ML tools we have developed at BGS to analyse a type of satellite data known as InSAR, which measures how much the ground beneath us moves. BGS © ¼ø»ÆÊ¦.

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When in Rome¼ø»ÆÊ¦¦

A trip to Lazio wouldn¼ø»ÆÊ¦™t be complete without a little sightseeing, so on my penultimate night in Rome I managed to squeeze in some touristy activities. A great thing about working for BGS is being able to experience different cultures and their food ¼ø»ÆÊ¦” and to have your Italian speaking skills completely humbled by the locals¼ø»ÆÊ¦¦!

The final day consisted of hands-on training workshops in three of the foundation models that ESA and NASA have developed over the years, which is what I was most looking forward to. The training was delivered by the scientists at NASA Impact and IBM, who helped write the models, who were all fantastically knowledgeable.

Putting my knowledge to work

Now, a few weeks after coming back and with my newfound knowledge from world-leading experts in artificial intelligence, I¼ø»ÆÊ¦™ve started to piece together more about how BGS could incorporate our data into such powerful models and I¼ø»ÆÊ¦™m excited to practise my new skills. Unfortunately though, I couldn¼ø»ÆÊ¦™t bring back buckets of Roman carbonara¼ø»ÆÊ¦¦ so I¼ø»ÆÊ¦™ll just have to get back to Rome as soon as I can!

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The panel discussion on Day 1 of the workshop, featuring representatives from NASA¼ø»ÆÊ¦™s Science Mission Directorate, the Group on Earth Observations AI4EO, European universities and the European Commission. BGS © ¼ø»ÆÊ¦.

About the author

Holly Hourston
Holly Hourston

Earth observation scientist

BGS Keyworth
Find out more

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UK¼ø»ÆÊ¦™s geomagnetic blind spots tackled with new observatories /news/uks-geomagnetic-blind-spots-tackled-with-new-observatories/ Thu, 28 Jul 2022 19:00:00 +0000 /?p=86493 Three new geomagnetic observatories have been installed across the UK to fill in the country¼ø»ÆÊ¦™s 'blind spots' and tackle the risk posed by space weather.

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Three new underground geomagnetic observatories in County Fermanagh, Leicestershire and Sussex will detect and eventually help predict space weather, which can potentially disrupt power grids, satellite communications and the GPS on smartphones.

They were installed underground in quiet, rural locations by the BGS Geomagnetism team. The solar-powered observatories will collect data about Earth¼ø»ÆÊ¦™s natural magnetic field and send it back to BGS in real-time, using the mobile phone network.

Why do we need new geomagnetic observatories?

Intense geomagnetic storms can have an adverse impact on technology like
power systems, satellite operations and smartphones.

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The new magnetometers mean we now have full coverage of magnetic field change across the UK.

Very large geomagnetic storms produce widespread aurora. While beautiful, they have the potential to be incredibly disruptive.

They could cause power disruption and affect essential services like satellite communications and transport.

Now that we have monitors in our blind spots, we will better understand in detail where and what ground effects can occur and understand why they happened.

Dr Ciarán Beggan, BGS Geophysicist.

Britain has had geomagnetic observatories in Shetland, Eskdalemuir and
Devon since 1908, covering the country from north to south; the will improve the breadth of measurements from west to east.

A map with graded black-to-orange circles covering the whole of the UK, indicating the extent of the eachof the geomagnetic observatories
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Zones of influence for the geomagnetic observatories.

The blue dots are existing observatories in the UK, Ireland and in northern Europe. The green dots are new UK observatories, three of which BGS installed in the past six months. The graded colouring from red to yellow shows the distance away from each location (up to 300 km away). No UK observatory is more than about 350 km (yellow colour) from its nearest neighbour and every part of the UK is within 200 km of an observatory.

The Aberdeen observatory is operated by , not BGS.

BGS © ¼ø»ÆÊ¦.

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Mitigating a national risk

Severe space weather was included in the UK Government¼ø»ÆÊ¦™s .

Geomagnetic storms are one form of space weather. They interrupt essential
services by creating geoelectric fields in the subsurface, which then flow
into transformers, pipelines and railways, causing malfunctions.

Other effects include an increase in the density of the upper atmosphere (ionosphere), which disrupts radio waves passing through it. This leads to a loss of signal between the ground and satellites, affecting communications and the accuracy of global navigation satellite systems (GNSS). A huge number of technology systems rely on GNSS, including:

  • phones
  • trains
  • self-driving vehicles
  • timing for internet transactions

Major geomagnetic storms are relatively rare but, as Dr Beggan points out, they
have a pattern.

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Major geomagnetic storms happen every 30 or 40 years in the UK, but we haven¼ø»ÆÊ¦™t had a big one since 1989.

We live in a completely different society now, where we are all reliant on
continuous electricity supplies, smartphones and satellite communications ¼ø»ÆÊ¦” a major geomagnetic storm could significantly reduce those services.

We¼ø»ÆÊ¦™re currently moving into a stronger part of the solar cycle, which means the chance of large geomagnetic storms is greater.

Geomagnetic storms are currently hard to predict in terms of size or even arrival time from the Sun. Adding the new sensors means we are able to measure their effects on the ground in real-time and advise on the impact on technology.

Dr Ciarán Beggan, BGS Geophysicist.

Further reading

  • Find out more about

Funding

The geomagnetic observatories were funded by UK Research and Innovation¼ø»ÆÊ¦™s £20 million (SWIMMR) programme. 

Media contact: Sarah McDaid (sarah@mcdaidpr.co.ukÌý07866789688)

How were the new sites selected?

Ciarán Beggan said: ‘We need a magnetically quiet, secure site. A magnetically quiet site must be at least 250 m from buildings, power lines and electric fences and 5 km from an electrified train line.

‘Ideally, it will have a south-facing aspect for the solar panel and 1 m of soil to allow the sensor to be buried. We ask permission from the landowner prior to installation. We want locations that are around 200¼ø»ÆÊ¦“250 km from the existing observatories as this is the general “scale” of magnetic field changes during geomagnetic storms.

‘Fermanagh is the most westerly part of Northern Ireland. The Sussex site is relatively easterly and is part of an existing BGS facility at Herstmonceux. The Leicestershire site is approximately in the middle of England, equidistant between the observatories in Devon and Eskdalemuir.’

Examples of geomagnetic storms having adverse impact:

  • 2022:
  • 2003:
  • 1989:
  • 1859:

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Using satellite imagery for emergency disaster response /news/using-satellite-imagery-for-emergency-disaster-response/ Tue, 06 Jul 2021 08:02:00 +0000 /?p=72123 BGS has a long history of assisting relief efforts by providing satellite maps, data and interpretation to those affected by disasters, helping to identify hazardous areas to avoid.

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Over the past 35 years, there has been almost a fivefold increase in the number of recorded disaster events, which include geohazards such as landslides, earthquakes, tsunamis and volcanic activity. In the immediate aftermath of these disasters, the timely use of satellite imagery can help to substantially reduce further humanitarian impact and loss of life.

Since 2008, BGS has responded to international calls for satellite-based, disaster situation maps to aid relief efforts and, later, to help build resilience to future events. Working remotely, we rapidly create maps and deliver advice required by a range of stakeholders including governments, international non-governmental organisations (NGOs) and local relief teams working on the ground. In some cases, remote working is also followed by targeted fieldwork.

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¼ø»ÆÊ¦˜There is no such thing as a natural disaster.¼ø»ÆÊ¦Š Disasters result when a hazard affects human settlement which is not appropriately resourced or organized to withstand the impact and whose population is vulnerable because of poverty, exclusion or socially disadvantaged in some way.¼ø»ÆÊ¦™

Mizutori, United Nations Office for Disaster Risk Reduction, 2020.

 

A screenshot of a base dataset showing hills in bright gree and flat land in shades of orange
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BGS routinely gathers and pre-prepares global imagery and elevation datasets. When a disaster occurs, we have base data ready and can quickly integrate new imagery and data to respond to disasters using custom 3D geological interpretation environments. BGS © ¼ø»ÆÊ¦.

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Emergency response

Satellite imagery has wide applicability for the full disaster lifecycle, including response. Satellites capture consistent data of differing spatial and spectral resolutions over large areas (up to thousands of square kilometres) with no risk to human life. These characteristics, along with the complementary nature of optical and radar data, improve what can be monitored over difficult terrain at times when access is made impossible by the disaster.

In many cases, satellite imagery is the only timely source of data for emergency response. Recognising these benefits, many satellite imagery providers are making their imagery freely available for disaster response through a variety of mechanisms, e.g. the .

A circular diagram describing the disaster lifecycle from pre-disaster through response to post-disaster
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The full disaster management cycle is shown by the inner two circles. The outer (gold) circle shows the BGS activities that support immediate relief efforts (response). This includes satellite map production and interpretation, which may be followed by fieldwork and published reports (post-disaster). The last step of the cycle may include the delivery of data products and training in preparation for future events (pre-disaster). BGS © ¼ø»ÆÊ¦; adapted from The International Charter Space and Major Disaster/ESA GSE RESPOND.

 

 

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BGS emergency response timeline

2008 ¼ø»ÆÊ¦” Montserrat: volcanic eruption

he International Charter: Space and Major Disasters was activated to acquire satellite observation data covering the eruption event of the Soufrière Hills volcano on the Caribbean island of Montserrat on 29 July 2008. Earth observation data, provided rapidly by BGS and the University of Reading, was a crucial piece of evidence used by scientists in advising government on the post-eruption state of the volcano. As a result, people who had been evacuated following the eruption were able to return to their homes.

2011 ¼ø»ÆÊ¦” Japan: earthquake and tsunami

On 11 March 2011, a M9.0 earthquake caused a devastating tsunami along a 500 km length of the eastern shoreline of Honshu Island, Japan. The earthquake itself caused relatively little damage, but the resulting tsunami caused a great loss of life and damage. BGS used satellite imagery to quickly determine where the tsunami had inundated and to help decipher its flow paths and assess the damage caused. Soon afterwards, BGS staff joined an international team studying sediments laid down by the tsunami. The research led to a better understanding of the impact of future tsunamis and how they will affect lives and livelihoods. This work also improved international collaboration on this key topic.

 

 

2015 ¼ø»ÆÊ¦” Pakistan: earthquake and landslides

On 26 October 2015, a M7.5 earthquake struck north-west Pakistan. The earthquake caused damage to more than 100 000 houses, which led to a significant loss of life. Landslides blocked roads, which further hindered relief efforts. BGS provided a limited response for the , and , which included a briefing document on ¼ø»ÆÊ¦˜Any information on landslide and risk of future landslides¼ø»ÆÊ¦™.

 

2015 ¼ø»ÆÊ¦” Nepal: earthquake and landslides

The 2015 earthquake sequence in Nepal, including the M7.8 Gorkha earthquake of 25 April and the M7.3 Dolakha aftershock of 12 May, triggered several thousand landslides. BGS led the UK response to an urgent UK Government request to provide advice on landslide hazard and impacts. Imagery from the International Charter: Space and Major Disaster (and from other suppliers) was used to deliver  ) to UK Government, to help coordinate and inform our response on the ground, and to relief organisations (e.g. World Food Programme; MapAction; UNOSAT) to help plan and deliver aid. Subsequently, BGS also led the UK Government-funded project to monitor landslide activity throughout the following six months when the monsoon hit Nepal.

¼ø»ÆÊ¦˜In the name of ESA congratulations¼ø»ÆÊ¦¦ BGS is really tackling an important piece of work in the context of DRM [disaster risk management] in Nepal.¼ø»ÆÊ¦™

¼ø»ÆÊ¦˜Thank you, and all your team for all the fantastic work you are doing on producing imagery following the two earthquakes in Nepal and for future monsoon work [….] and as always BGS give excellent products, which I have put in front of ministers at every opportunity.¼ø»ÆÊ¦™

 

2016 ¼ø»ÆÊ¦” Ecuador: earthquake

BGS played a leading role in building an inventory of landslides and advising on the associated hazards following the M7.8 Ecuador earthquake on 16 April 2016. Landslide situation analyses were produced for a number of areas in Ecuador, providing valuable advice to the UK Government and international agencies. A variety of satellite imagery (obtained via the International Charter: Space and Major Disasters) was used to create maps of landslides active since the earthquake.

¼ø»ÆÊ¦˜558 landslides were detected by our partners from the British Geological Survey using data provided by UNOSAT. This information is made available for the recovery efforts to rebuild after the earthquake, thus helping to bridge the data gap from emergency situation to reconstruction.¼ø»ÆÊ¦™

BGS was included in the group that won the USGS-NASA in 2017 for ¼ø»ÆÊ¦˜outstanding support to the global community during times of crisis¼ø»ÆÊ¦™. The award recognised the project management and mapping products provided by BGS as part of several responses worldwide.

2017 ¼ø»ÆÊ¦” Sierra Leone: landslides

On 14 August 2017, heavy rain fell in the Sierra Leone capital, Freetown, which triggered a catastrophic landslide that travelled 6 km through the city to the sea. A national emergency was declared; more than 3000 were left homeless, hundreds of buildings were buried or completely destroyed and over 1000 fatalities were recorded. was activated on behalf of the Food and Agricultural Organisation (FAO) Sierra Leone Office and BGS immediately provided maps and advice. The recently elected President approved a new Mudslide Prevention Inter Agency Committee to tackle the issue of landslides and urban development.

¼ø»ÆÊ¦˜The [2018] would not have been possible without the dedication and support of different partners and stakeholders at national and local levels, who contributed both time and expertise.¼ø»ÆÊ¦™

Ove Arup & Partners International Ltd (report authors) on behalf of The World Bank.

 

2018 ¼ø»ÆÊ¦” Philippines: typhoon and landslides

Following the activation of Charter 586, , in September 2018, BGS scientists produced a landslide inventory, which mapped 263 landslides. The inventory was prepared in rapid mapping mode based on satellite interpretation, which focused on areas near roads, buildings and rivers.

2018 ¼ø»ÆÊ¦” Indonesia: earthquake, tsunami and landslides

A large M7.5 earthquake in Palu, Sulawesi, Indonesia, on 28 September 2018, triggered liquefaction flows and coastal landslides leading to tsunami. The BGS study assessed ¼ø»ÆÊ¦˜before and after¼ø»ÆÊ¦™ high-resolution optical imagery to establish inundation limits and coastline changes. Fieldwork was then undertaken to assess coastal landslides as sources of the tsunami.

This work was funded through a . BGS worked with the Indonesian Agency for the Assessment and Application of Technology (BPPT), who assisted with data collection, fieldwork and logistics. The impacts of this work included a strengthening of research partnerships, increased understanding of tsunami mechanisms and, therefore, better-informed tsunami generation models.

2018 ¼ø»ÆÊ¦” Anak Krakatau: tsunami

The volcano Anak Krakatau (¼ø»ÆÊ¦˜Child of Krakatoa¼ø»ÆÊ¦™), located between Java and Sumatra, collapsed on 22 December 2018, causing a devastating tsunami that killed hundreds of people and displaced tens of thousands more living on the coasts of Indonesia.

BGS earth observation staff used satellite data to assist the fieldwork, which required the collection of laboratory samples and to understand the interactions between eruptive activity and sector collapse at Anak Krakatau. Satellite data was the only consistent source of data between June and December 2018. This data provided evidence of relatively low-intensity Strombolian activity, which prevented any fieldwork on the ground. This low-intensity activity was a precursor to the final collapse, which halved the original size of the island.

The work was funded by Global Geological Risk Platform of the BGS NC-ODA grant NE/R000069/1: Geoscience for Sustainable Futures and two NERC grants: NE/S003509/1 and NE/T002018/1

2019 ¼ø»ÆÊ¦” Mozambique and Zimbabwe: Cyclone Idai

Tropical Cyclone Idai made landfall on 14 March 2019 through Beira City, central Mozambique. Heavy rains, flash flooding and landslides caused extensive damage to key road routes and bridges before cutting off many affected areas. BGS was approached by the FCDO (DfID at the time), which was leading the UK humanitarian response to the event. We supplied UK Government with a rainfall-triggered landslide hazard classification based on satellite data. Our results were passed to the EU Emergency Response Coordination Centre (ERCC) for use by civil protection teams.

Practice change

In the immediate aftermath of geohazard events, rapid response is necessary, so preparing and establishing workflows, processes and output templates is crucial. For example, prior to events, preparation of susceptibility maps facilitates pre-positioning for potential future events. After events, mobile data-capture systems are used in the field to quickly and accurately record information on the ground.

A group of students sat at computer terminals, drawing with pencils on pieces of paper
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National Minerals Agency staff working through a BGS-led training exercise in hazard mapping, Sierra Leone. BGS © ¼ø»ÆÊ¦.

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The BGS-led project takes a step-change in the application of earth observation. This project not only looks at exposure to hazards; it also addresses multi-hazards and their impacts on lives and livelihoods. The project has released exposure data that we developed for 44 countries, which will help our international disaster planning and responses for events in the future. We are specifically working with two countries, Nepal and Tanzania, to provide robust data at national scale for disaster risk management (DRM). However, the direct impacts on lives and livelihoods are difficult to quantify and/or evidence due to the dynamic way disaster events unfold.

Sustainable development goals

Partners and funding

Our disaster response efforts are supported by funding streams such as NERC Urgency Grants, the Global Geological Risk Platform of the British Geological Survey NC-ODA grant NE/R000069/1: Geoscience for Sustainable Futures, and BGS National Capability funds.

Further information

Find out more about BGS disaster response research or contact BGS Enquiries.

About the author

Luke Bateson
Luke Bateson

Acting head of shallow geohazards and Earth observation; head of geodesy and remote sensing (Keyworth)

BGS Keyworth
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References

Bateson, L, Tappin, D R, Novellino, A, Udrekh, Frederik, M, and Putra, P S. 2020. Report on NERC Urgency Grant NE/S015930/1 ¼ø»ÆÊ¦” September 28th 2018 Sulawesi Tsunami ¼ø»ÆÊ¦” BGS disaster response. British Geological Survey Internal Report.

British Geological Survey. 2008. Charter final operation report Charter ID 213: volcanic eruption of 29th July 2008 on the island of Montserrat. (Keyworth, Nottingham: British Geological Survey.)

Grilli, S T, Tappin, D R, Carey, S, Watt, S F, Ward, S N, Grilli, A R, Engwell, S L, Zhang, C, Kirby, J T, Schambach, L, and Muin, M, 2019. . Scientific Reports, Vol. 9(1), 1¼ø»ÆÊ¦“13. DOI: https://doi.org/10.1038/s41598-019-48327-6

International Charter: Space and Major Disasters. 2015. [Online] Charter activations: earthquake and landslide in Nepal and India. [Cited 1 February 2021]. Available at

International Charter: Space and Major Disasters. 2016. [Online] Earthquake in Ecuador. [Cited 1 February 2021]. Available at

International Charter: Space and Major Disasters.  2018. [Online] Earthquake and tsunami in Indonesia. [Cited 2 February 2021]. Available at –

International Charter: Space and Major Disasters. 2018. [Online] Typhoon Mangkhut in Philippines. [Cited 2 February 2021]. Available at –

International Federation of Red Cross and Red Crescent Societies. 2020. World Disasters Report. (Geneva). Available from .

III.ORG. World Weather-Related Natural Catastrophes by Peril, 1980¼ø»ÆÊ¦“2018. [Graphs]. Insurance Information Institute (Source Munich Re). [Cited 29 November 2020].  Available at

Novellino, A, Engwell, S L, Grebby, S, Day, S, Cassidy, M, Madden-Nadeau, A, Watt, S, Pyle, D, Abdurrachman, M, Edo Marshal Nurshal, M, Tappin, D R, Kurniawan, I A, and Hunt, J. 2020. . Applied Sciences, Vol. 10(2), 536. DOI: https://doi.org/10.3390/app10020536

Novellino, A, Jordan, C, Ager, G, Bateson, L, Fleming, C, and Confuorto, P. 2019. . 23¼ø»ÆÊ¦“31 in Geological Disaster Monitoring Based on Sensor Networks.  Durrani, T, Wang, W, and Forbes S (editors). (Singapore: Springer.) DOI:  https://doi.org/10.1007/978-**0992-2_3

Sierra Leone Telegraph. 2017. Sierra Leone government to provide financial package for mudslide victims. Sierra Leone: Sierra Leone Telegraph. [Cited 1 February 2021]. Available at

Tappin, D R. 2018. . Geological Society, London, Special Publications, Vol. 456, 5¼ø»ÆÊ¦“38. DOI:  http://dx.doi.org/10.1144/SP456.11

The World Bank. 2018. Sierra Leone Multi-City Hazard Review and Risk Assessment; Final Report (Volume 1 of 5). Available from .

 

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Spaceborne data: an expanding role in disaster response /news/spaceborne-data-an-expanding-role-in-disaster-response/ Wed, 23 Jun 2021 08:00:00 +0000 /?p=74304 Alessandro Novellino explains the importance of Earth observation to help facilitate successful emergency responses after natural hazard occurrences.

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My name is Alessandro and I am a remote sensing geoscientist at BGS. I use satellite data to map, monitor and model geohazards and part of my job consists of working during disaster response activities.

The key to successful emergency response is quick and effective early action. This is only possible if the right information is available in the right place, in the shortest time possible. Because we are now in the ¼ø»ÆÊ¦˜Golden Age¼ø»ÆÊ¦™ of spaceborne Earth observation (EO), satellite data is providing users with an unprecedented wealth of data1 that is stimulating the growth of processing services2 and novel methodologies3 while also improving our capability in disaster response situations.

I use EO data to identify damaged areas or potential cascading hazards following a disaster, which support civil protection authorities and international humanitarian communities in planning the logistics of relief action. I built most of my experience by leading EO activities for the processing of satellite data needed to reconstruct the evolution of volcanic activity that led to the Anak Krakatau 2018 collapse and tsunami4,5.

Since then, I have become an authorised user of the . The charter is a worldwide collaboration, by which satellite data are made available for the benefit of disaster management. By combining EO data from different space agencies and commercial provides, the charter allows expertise to be coordinated for rapid response to major disaster situations. Equally importantly, the charter prompts participating space agencies to release satellite data at no cost.

To have an idea of the rapid growth in the use of satellite data from the disaster response community, the charter was activated 11 times in 2000, when the organisation was first established, rising to 55 times in 2020. My most recent work for the charter is related to the Nyiragongo volcano in the Democratic Republic of the Congo. The charter was activated6 less than a day after Nyiragongo¼ø»ÆÊ¦™s eruption on 22 May 2021. At least 30 people died and to escape the dangers associated with the eruption, which occurred when fractures opened in the volcano¼ø»ÆÊ¦™s side.

Soon after the activation I liaised with international space agencies (the European Space Agency, Japan Aerospace Exploration Agency and Argentina’s space agency CONAE) to coordinate the acquisition of tasked radar data over the volcano, resulting in a total of 18 images over the first two weeks. Differing from optical data, radar sensors can ¼ø»ÆÊ¦˜see¼ø»ÆÊ¦™ almost completely through clouds and volcanic plumes (Figure 1).

Radar backscattered signal from Sentinel-1 data (VH polarisation, decibel scale) for the 19-5-2021 and 25-5-2021. Data processed through the Sentinel EO-Browser. New lava flows are visible as darker areas on the southern and south eastern slope of the Nyiragongo volcano.
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Figure 1  Radar backscattered signal from Sentinel-1 data (VH polarisation, decibel scale) for the 19-5-2021 and 25-5-2021. Data processed through the Sentinel EO-Browser. New lava flows are visible as darker areas on the southern and south-eastern slope of the Nyiragongo volcano.

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This gave me a unique opportunity to map the lava flows from space7 and estimate a total lava extent of about 9.4 km2 with around 1100 infrastructure affected (as of the 27 May).  Although this is a preliminary analysis that has not yet been validated in the field (Figure 2), this piece of information was key for the BGS volcanology team to work in collaboration with the Goma Volcanological Observatory and assess eruptive volume calculations, vent identification, and probabilistic lava flow hazard assessments.

Figure 2 - Preliminary Lava Flow Extension Following the Nyiragongo Volcano eruption as communicated by BGS to the Disaster Charter on the 26th of May 2020.
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Figure 2  Preliminary lava flow extension following the Nyiragongo volcano eruption as communicated by BGS to the Disaster Charter on 26 May 2020.

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This Nyiragongo event shows how international initiatives provide organizations working on the front lines, like BGS, with the opportunity to increase the impact and effectiveness of our science by having quick access to EO data. However, I believe that the next step forward in the uptake of EO for disaster response lies in capacity-building activities, in an effort to help lower- and middle-income countries use and benefit from space-based technologies not just at the response stage but, more importantly, during mitigation and preparedness, key phases to assess a region¼ø»ÆÊ¦™s vulnerability and mitigate the risk.

Recently, a number of initiatives (UNOOSA, UNOSAT) are going into this direction and, in addition, NGOs are showing growing interest in space-based geographic information. I look forward to watching the progress.

References

Novellino, A, and Grebby, S. 2020. . Applied Sciences, Vol. 10(13), 4609. DOI: https://doi.org/10.3390/app10134609

by Alessandro Novellino (Geoblogy)

Novellino, A, Cesarano, M, Cappelletti, P, Di Martire, D, Di Napoli, M, Ramondini, M, Sowter, A, and Calcaterra, D. 2021. . CATENA, Vol. 203, 105317. DOI: https://doi.org/10.1016/j.catena.2021.105317

Hunt, J E, Tappin, D R, Watt, S F L, Susilohadi, S, Novellino, A, Ebmeier, S K, Cassidy, M, Engwell, S.L., Grilli, S T, Hanif, M, Priyanto, W S, Clare, M A, Abdurrachman, M, and Udrekh, U. 2021. . Nature Communications, Vol. 12, 2827. Supported through NERC Urgency Grant (NE/T002018/1) and ODA funding (NE/R000069/1). DOI: https://doi.org/10.1038/s41467-021-22610-5

Novellino, A, Engwell, S L, Grebby, S, Day, S, Cassidy, M, Madden-Nadeau, A, Watt, S, Pyle, D, Abdurrachman, M, Edo Marshal Nurshal, M, Tappin, D R, Andri Kurniawan, I, and Hunt, J. 2020. . Applied Sciences, Vol. 10(2), 536. Supported through NERC Urgency Grant (NE/T002018/1) and ODA funding (NE/R000069/1). DOI: https://doi.org/10.3390/app10020536

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Virtual fieldwork during a global pandemic /news/virtual-fieldwork-during-a-global-pandemic/ Wed, 03 Mar 2021 11:10:05 +0000 /?p=68846 Virtual field reconnaissance can help maintain research momentum during the COVID-19 pandemic.

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The demand for battery raw materials, such as lithium and cobalt, is increasing rapidly as we transition to a low-carbon economy and work towards net zero. The COVID-19 pandemic has disrupted normal working activities, including some of the ¼ø»ÆÊ¦˜real-world¼ø»ÆÊ¦™ geological fieldwork essential to the research that will help accelerate the shift towards zero-emission electric vehicles.

Geological research is a highly collaborative activity but, under current UK restrictions, fieldwork outside of the local area is very difficult to undertake. Focusing on lithium exploration, this article explains how virtual field reconnaissance can help maintain research momentum.

Virtual field reconnaissance

During the pandemic, BGS and have been working in partnership with Yacimientos de Litio Bolivianos (YLB)  on the -funded project, which aims to better understand the lithium resource in the salt flats (salars) of South America. The research aim is not only to understand the sources of lithium in the volcanic rocks of the Andes Mountains, but also how it is liberated from these rocks and then transported, by surface water and underground water, to the salars.

Once the lithium is in the salar, we want to understand how it is deposited in the salt as the water evaporates. In addition, we seek to better understand how it can be moved around and concentrated by salt-rich brines. This research will lead to a better knowledge of lithium resource efficiency.

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¼ø»ÆÊ¦˜Resource efficiency means using the Earth’s limited resources in a sustainable manner while minimising impacts on the environment. It allows us to create more with less and to deliver greater value with less input.¼ø»ÆÊ¦™

Geological mapping using satellite imagery

Remotely sensed satellite imagery and data play an important part in mapping the geology. Different rocks reflect different amount of sunlight in different regions of the electromagnetic spectrum; the satellites are able to record this information in infrared areas that the human eye cannot see. The imagery can therefore be processed to highlight reflections that characterise different rocks and minerals, meaning the geologist can see these subtle differences.

Understanding the geometric relationships between different geologies is crucial to understanding their ages and position in the succession. High-resolution terrain models, when combined with the processed satellite imagery in the GeoVisionary 3D environment, allow these relationships to be easily understood.

Some of the key questions in Bolivia concern where the lithium originates and also where it is most likely to be picked up by water to be transported to a salar. Geological processes and understanding tell us that it is the ignimbrites (deposits of ash, glass and rock particles following explosive pyroclastic flows), rather than the extrusive lavas, that will be richer in lithium. However, the majority of the lithium will reach the surface and groundwater from modern sediments (sands and gravels) that have eroded from the ignimbrites.

GeoVisionary was already a proven environment for more effective and targeted fieldwork. In this case it proved to be an excellent means by which the entire project team could collaborate effectively and clearly, overlaying and analysing multiple datasets all within a single context-rich tool.

The outcomes of using GeoVisionary for virtual reconnaissance fieldwork have been to identify:

  • geometrical relationships and hence relative ages of different rock types
  • ignimbrites
  • sediments derived from the ignimbrites

About the author

Luke Bateson
Luke Bateson

Acting head of shallow geohazards and Earth observation; head of geodesy and remote sensing (Keyworth)

BGS Keyworth
Find out more

More information

Find out more about or contact BGS Enquiries.

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BGS data supports new tool to track geological changes in abandoned coal mines /news/bgs-data-supports-new-tool-to-track-geological-changes-in-abandoned-coal-mines/ Fri, 20 Nov 2020 13:13:05 +0000 /?p=62204 BGS data supports new tool to track geological changes in abandoned coal mines.

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BGS is part of a multi-disciplinary team led by the University of Nottingham to develop a remote monitoring tool designed to help authorities manage public safety and environmental issues in recently abandoned coal mines.

The tool uses satellite radar imagery to capture millimeter-scale measurements of changes in terrain height. These measurements, when integrated with geological process models, can be used to monitor and forecast groundwater levels and changes in geological conditions deep below the earth¼ø»ÆÊ¦™s surface in former mining areas. Ultimately this can help forecast where surface discharge of mine water may occur.

The study uses an advanced InSAR technique, called Intermittent Small Baseline Subset (ISBAS), developed by the University of Nottingham and Terra Motion Ltd and uses geological data provided by the BGS.

The method has been implemented over Nottinghamshire coalfields and the findings published in a paper ¼ø»ÆÊ¦˜¼ø»ÆÊ¦™ in the journal Remote Sensing of the Environment.

The team hopes to integrate results into an existing screening tool developed by the Environment Agency and Coal Authority to help local planning authorities, developers and consultants design sustainable drainage systems in coalfield areas, with potential to be scaled to coalfields across the UK.

The research was led by University of Nottingham PhD, David Gee and funded by the . ENVISAT and Sentinel-1 SAR data were provided by the with geological data by BGS and hydrogeological data by the Coal Authority.

Luke Bateson and Alessandro Novellino from the BGS Earth Observation and Geodesy capability have supported the geological interpretation and modelling of the InSAR results.

You can read more about the Interferometric Synthetic Aperture Radar (InSAR) technique from BGS Remote Sensing Geologist, Alessandro Novellino in ¼ø»ÆÊ¦˜¼ø»ÆÊ¦™, on the British Geological Survey blog.  

Luke Bateson
Luke Bateson

Acting head of shallow geohazards and Earth observation; head of geodesy and remote sensing (Keyworth)

BGS Keyworth
Find out more

Alessandro Novellino
Dr Alessandro Novellino

Remote sensing geoscientist

BGS Keyworth
Find out more

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