A5013188481- Geophysical and Geoelectrical Methods
- Coastal and Marine Dynamics
- Synthetic Aperture Radar (SAR) Applications and Techniques
- Flood Risk Assessment and Management
- Tropical and Extratropical Cyclones Research
- Geological and Geophysical Studies
- Geological formations and processes
- Geophysics and Gravity Measurements
- Landslides and related hazards
- Coastal wetland ecosystem dynamics
- Geophysical Methods and Applications
- Seismic Waves and Analysis
- Cryospheric studies and observations
- Climate Change and Health Impacts
- Geochemistry and Elemental Analysis
- Disaster Management and Resilience
- Soil erosion and sediment transport
- Environmental Changes in China
- Tree Root and Stability Studies
- Groundwater flow and contamination studies
- Seismic Imaging and Inversion Techniques
- Advanced SAR Imaging Techniques
- Coastal and Marine Management
- Geomagnetism and Paleomagnetism Studies
- Hydrocarbon exploration and reservoir analysis
Virginia Tech
2022-2025
Columbia University
2025
University of Delaware
2021-2022
The vulnerability of coastal environments to sea-level rise varies spatially, particularly due local land subsidence. However, high-resolution observations and models subsidence are scarce, hindering an accurate assessment. We use satellite data from 2007 2020 create map rate at mm-level accuracy for different covers along the ~3,500 km long US Atlantic coast. Here, we show that exceeding 3 mm per year affects most areas, including wetlands, forests, agricultural developed regions. Coastal...
Abstract The sea level along the US coastlines is projected to rise by 0.25–0.3 m 2050, increasing probability of more destructive flooding and inundation in major cities 1–3 . However, these impacts may be exacerbated coastal subsidence—the sinking land areas 4 —a factor that often underrepresented coastal-management policies long-term urban planning 2,5 In this study, we combine high-resolution vertical motion (that is, raising or lowering land) elevation datasets with projections...
In Derna, Libya, a record-breaking storm and subsequent dam failures on September 10, 2023, caused over 11,000 deaths. Analyzing satellite data from 2016–2023, we found 1.8 mm/yr of differential settlement in dams contributed to their failure, flooding damaged ~8570 buildings. We argue that the interplay aging infrastructure, political instability, climate change, human decisions drove this disaster, stressing need for holistic 'healthcare' management approach prevent future catastrophes.
Every year incidents of building collapse claim many lives and cause enormous financial losses around the world, which are often blamed on low-quality materials, non-compliance with standards, lack oversight, failure to enforce codes. Here, we highlight role land subsidence in triggering unprecedented collapses city Lagos, Nigeria, has reported over 200 casualties during 152 failures since 2005. We used acquisitions from radar satellites for 2018-2021 provided data that link foundation...
Coastal communities are vulnerable to multihazards, which exacerbated by land subsidence. On the US east coast, high density of population and assets amplifies region's exposure coastal hazards. We utilized measurements vertical motion rates obtained from analysis radar datasets evaluate subsidence-hazard population, assets, infrastructure systems/facilities along coast. Here, we show that 2,000 74,000 km
One of the fundamental problems in continental rift segmentation and propagation is how strain accommodated along large rift-bounding faults (border faults) since propagating border control expression zones, syn-rift depo-centers, long-term basin evolution. In Southern Malawi Rift, where previous studies on early-stage rifting only assessed fault structure from surficial topographic expression, we integrate surface subsurface data to investigate segmentation, linkage, growth as proxies for...
ABSTRACT An electrical resistivity tomography survey was conducted to assess the subsurface conditions associated with coseismic liquefaction phenomenon in epicentral region following M w 5.8 Mirpur earthquake (Pakistan) on 24 September 2019. The produced extensive liquefaction‐induced surface deformations, including: sand blows, ground failure and lateral spreading along Upper Jhelum Canal nearby villages. Electrical data were acquired three profiles calibrated available borehole data....
<title>Abstract</title> River deltas are essential socio-ecological systems, sustaining dense human populations, major economic centers, and vital ecosystems worldwide. Rising sea levels subsiding land threaten the sustainability of these valuable landscapes with relative sea-level rise associated flood, land-loss, salinization hazards. Despite risks, vulnerability assessments impeded by lack contemporary, high-resolution delta-wide subsidence observations. Here, we present spatially...
Abstract. The Douala coastland (DCL), situated within the sedimentary basin along Gulf of Guinea, is characterised by its low elevation and alluvial geology, making it particularly susceptible to coastal erosion, land subsidence, relative sea-level rise. DCL home numerous rapidly growing cities, such as Douala, Tiko, Limbe, which are currently experiencing alarming rates frequent flooding, significant loss land. Regional continental investigations have provided evidence subsidence in this...
Mkonga village, ∼35 km southwest of the capital city Lilongwe on central plains in Malawi, Africa, located at crest a local topographic-high characterized by crystalline basement. Groundwater aquifer systems shallow buried basement are geologically complex reservoir targets with historically low drilling success rates. Understanding weathering profiles and their implications for architecture is crucial productive wells. This particularly critical developing countries where water demands...
Abstract Iron mineral transformations occurring in hydrocarbon‐contaminated sites are linked to the biodegradation of hydrocarbons. At a site near Bemidji, Minnesota, USA, measurements magnetic susceptibility (MS) useful for monitoring natural attenuation hydrocarbons related iron cycling. However, transient MS, previously observed at site, remains poorly understood and phases acting as reactants products associated with this MS perturbation remain largely unknown. To address these unknowns,...
This work proposes an improved convolutional long short-term memory (ConvLSTM) based architecture for selection of elite pixels (i.e., less noisy) in time series interferometric synthetic aperture radar (TS-InSAR). Compared to previous version, the model can process InSAR stacks variable steps and select both persistent (PS) distributed scatterers (DS). We trained on ~20,000 training images (interferograms), each size 100 by pixels, extracted from interferograms containing artificial...
The coastline of the African Gulf Guinea hosts large river deltas, coastal wetlands and mangrove ecosystems. It is in places densely populated, with many capital megacities millions inhabitants such as Lagos, Abidjan Accra situated at coast. And population projections for these cities suggest a continued staggering increase coming decades. Also, economic activities are located along coastline. For example, Nigerian areas home to 85% nation industry more than 100 million people. On other...
One of the fundamental problems in continental rift segmentation and propagation is how strain accommodated along large rift-bounding faults (border faults) since propagating border control expression zones, syn-rift depo-centers, long-term basin evolution. In southern Malawi Rift, where previous studies on early-stage rifting only assessed fault structure from surficial topographic expression, we integrate surface subsurface data to investigate segmentation, linkage, growth as proxies for...