S. K. Ebmeier
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View article: Magma Ascent and Accumulation Drives Surface Deformation and Ring Fault Seismicity Preceding the 2024 Eruption of Fernandina Volcano, Galápagos Islands
Magma Ascent and Accumulation Drives Surface Deformation and Ring Fault Seismicity Preceding the 2024 Eruption of Fernandina Volcano, Galápagos Islands Open
At caldera volcanoes, ring faults can play a key role in controlling the dynamics of unrest and patterns of associated surface deformation and seismicity. Here we show that the March 2024 eruption of Fernandina volcano was preceded by a 2.…
View article: Widespread Extent of Irrecoverable Aquifer Depletion Revealed by Country‐Wide Analysis of Land Surface Subsidence Hazard in Iran
Widespread Extent of Irrecoverable Aquifer Depletion Revealed by Country‐Wide Analysis of Land Surface Subsidence Hazard in Iran Open
Ongoing depletion of Iran's groundwater, driven by human extraction, has contributed to 106 incidences of basin‐scale, land‐surface subsidence covering 31,400 km 2 (10 mm/yr, 1.9%) of the country. We use Sentinel‐1 Interferometric Syntheti…
View article: Wetland fragmentation associated with large populations across Africa
Wetland fragmentation associated with large populations across Africa Open
Wetlands provide essential ecosystem services in Africa, yet their extent and fragmentation remain poorly understood. Here we classify African wetlands at 10 m resolution, using seasonal composite imagery and a random forest algorithm. We …
View article: Thank You to Our 2024 Reviewers
Thank You to Our 2024 Reviewers Open
The entire editorial board of the Journal of Geophysical Research‐Solid Earth would like to sincerely thank all our colleagues who reviewed manuscripts for us in 2024. The hours they spent reading in order to provide insightful comments on…
View article: Machine learning for volcano deformation: detection, interpretation and forecasting
Machine learning for volcano deformation: detection, interpretation and forecasting Open
Ground deformation is a key indicator of volcanic activity and routine acquisition by the Sentinel-1 satellite mission now allows us to monitor volcano deformation globally. However, for the data to be used in an operational way, a large a…
View article: Widespread extent of irrecoverable aquifer depletion revealed by country-wide analysis of land surface subsidence hazard in Iran, 2014-2022, using two component Sentinel-1 InSAR time series
Widespread extent of irrecoverable aquifer depletion revealed by country-wide analysis of land surface subsidence hazard in Iran, 2014-2022, using two component Sentinel-1 InSAR time series Open
Ongoing depletion of Iran's groundwater, driven by human extraction, has contributed to 108 incidences of basin-scale land-surface subsidence covering 29,600 km2 (>10 mm/yr, 1.8 %) of the country, 75 % of which correlates with agriculture.…
View article: The utility of TerraSAR-X, TanDEM-X, and PAZ for studying global volcanic activity: Successes, challenges, and future prospects
The utility of TerraSAR-X, TanDEM-X, and PAZ for studying global volcanic activity: Successes, challenges, and future prospects Open
TerraSAR-X (TSX), TanDEM-X (TDX), and PAZ Synthetic Aperture Radar data have been used at over 120 volcanoes to assess surface characteristics and change over time. We examine previous work, adding additional examples to understand where a…
View article: Craters of habit: Patterns of deformation in the western Galápagos
Craters of habit: Patterns of deformation in the western Galápagos Open
The western Galápagos islands of Fernandina and Isabela comprise six active volcanoes that have deformed since first observed by satellite radar in the early 1990s. We analyse new (2015–2022) displacement time series at Alcedo, Cerro Azul,…
View article: Machine learning for volcano deformation using InSAR: moving beyond detection and classification to forecasting
Machine learning for volcano deformation using InSAR: moving beyond detection and classification to forecasting Open
Ground deformation is a key indicator of volcanic activity and routine acquisition by the Sentinel-1 satellite mission now allows us to monitor volcano deformation globally. We have developed a system to routinely apply radar interferometr…
View article: Constraining explosive volcanic eruption parameters and environmental impacts using remote sensing observations of forest disturbance and recovery.
Constraining explosive volcanic eruption parameters and environmental impacts using remote sensing observations of forest disturbance and recovery. Open
Explosive volcanic eruptions can damage or destroy surrounding forests, with the potential to alter their characteristics over different timescales. The damage can range from minor/temporary damage to total destruction and burial of vegeta…
View article: Magma Accommodation and Ground Movement Analysis: testing the reliability of analytical volcano deformation models 
Magma Accommodation and Ground Movement Analysis: testing the reliability of analytical volcano deformation models  Open
Space for magma intrusion in the subsurface is often created by uplifting and bending of overlying rock, producing a forced fold. This intrusion-induced forced folding can deform the free surface, driving ground movement at active volcanoe…
View article: Patterns of deformation and connectivity at Western Galápagos Volcanoes
Patterns of deformation and connectivity at Western Galápagos Volcanoes Open
The Western Galápagos volcanoes of Alcedo, Cerro Azul, Darwin, Fernandina, Sierra Negra, and Wolf have exceptionally high rates of eruption and unrest.  Deformation rates measured using Interferometric Synthetic Aperture Radar ar…
View article: Developing Earth Observation strategies for Global Volcano Monitoring (G-VEWERS)
Developing Earth Observation strategies for Global Volcano Monitoring (G-VEWERS) Open
Satellite observations of displacement are critical to any efforts to monitor volcanoes globally given that less than half of world’s potentially active subaerial volcanoes are monitored continuously by ground-based systems.  Th…
View article: Strategies for improving the communication of satellite-derived InSAR data for geohazards through the analysis of Twitter and online data portals
Strategies for improving the communication of satellite-derived InSAR data for geohazards through the analysis of Twitter and online data portals Open
Satellite-based earth observation sensors are increasingly able to monitor geophysical signals related to natural hazards, and many groups are working on rapid data acquisition, processing, and dissemination to data users with a wide range…
View article: First Onset of Unrest Captured at Socompa: A Recent Geodetic Survey at Central Andean Volcanoes in Northern Chile
First Onset of Unrest Captured at Socompa: A Recent Geodetic Survey at Central Andean Volcanoes in Northern Chile Open
We report the first detection of unrest at Socompa volcano during our recent survey of Central Andean volcanos in Northern Chile using Interferometric Synthetic Aperture Radar measurements spanning January 2018 to October 2021. We find tha…
View article: High‐Resolution InSAR Reveals Localized Pre‐Eruptive Deformation Inside the Crater of Agung Volcano, Indonesia
High‐Resolution InSAR Reveals Localized Pre‐Eruptive Deformation Inside the Crater of Agung Volcano, Indonesia Open
During a volcanic crisis, high‐rate, localized deformation can indicate magma close to the surface, with important implications for eruption forecasting. However, only a few such examples have been reported, because frequent, dense monitor…
View article: Wetland mapping at 10 m resolution reveals fragmentation in southern Nigeria
Wetland mapping at 10 m resolution reveals fragmentation in southern Nigeria Open
Wetland ecosystems play key roles in global biogeochemical cycling, but their spatial extent and connectivity is often not well known. Here, we detect the spatial coverage and type of wetlands at 10 m resolution across southern Nigeria (to…
View article: InSAR Time Series Analysis (2018-2021) for Volcanic Monitoring in Northern Chile
InSAR Time Series Analysis (2018-2021) for Volcanic Monitoring in Northern Chile Open
This dataset is for the paper "First onset of unrest captured at Socompa: A Recent Geodetic Survey at Central Andean volcanoes in Northern Chile" which is published in GRL: https://doi.org/10.1029/2022GL102480. InSAR Data: The folder of In…
View article: InSAR Time Series Analysis (2018-2021) for Volcanic Monitoring in Northern Chile
InSAR Time Series Analysis (2018-2021) for Volcanic Monitoring in Northern Chile Open
This dataset is for the paper "First onset of unrest captured at Socompa: A Recent Geodetic Survey at Central Andean volcanoes in Northern Chile" which is published in GRL: https://doi.org/10.1029/2022GL102480. InSAR Data: The folder of In…
View article: Modelling Surface Deformation due to Magma Migration through Mush Zones 
Modelling Surface Deformation due to Magma Migration through Mush Zones  Open
<div> <div> <p><span data-contrast="auto">Long-term magma storage as a cooler, predominantly crystalline mush provides a reasonable model to represent an inherently complex and heterogeneous overall system…
View article: A comprehensive observational database of deformation at global volcanoes for machine learning applications
A comprehensive observational database of deformation at global volcanoes for machine learning applications Open
A key indicator of potential and ongoing volcanic activity is deformation of a volcano's surface due to magma migrating beneath. The European Sentinel-1 radar archive now contains a large number of examples of volcano deformation, yet the …