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Coupling tree-ring and geomorphic analyses to reconstruct the 1950s massive Glacier Lake Outburst Flood at Grosse Glacier, Chilean Patagonia.
Sci Total Environ
January 2025
Climate Change Impacts and Risks in the Anthropocene (C-CIA), Institute for Environmental Sciences, University of Geneva, Geneva, Switzerland; dendrolab.ch, Department of Earth Sciences, University of Geneva, Geneva, Switzerland; Department F.-A. Forel for Environmental and Aquatic Sciences, University of Geneva, Switzerland.
Over recent decades, global warming has led to sustained glacier mass reduction and the formation of glacier lakes dammed by potentially unstable moraines. When such dams break, devastating Glacial Lake Outburst Floods (GLOFs) can occur in high mountain environments with catastrophic effects on populations and infrastructure. To understand the occurrence of GLOFs in space and time, build frequency-magnitude relationships for disaster risk reduction or identify regional links between GLOF frequency and climate warming, comprehensive databases are critically needed.
View Article and Find Full Text PDFNear real-time change detection tool for photogrammetric flood preparedness.
Environ Monit Assess
January 2025
Technische Hochschule Nürnberg Georg Simon Ohm, Institute of Hydraulic Engineering and Water Resources Management, Nuremberg, Germany.
Through the mobilization of movable objects due to the extreme hydraulic conditions during a flood event, blockages, damage to infrastructure, and endangerment of human lives can occur. To identify potential hazards from aerial imagery and take appropriate precautions, a change detection tool (CDT) was developed and tested using a study area along the Aisch River in Germany. The focus of the CDT development was on near real-time analysis of point cloud data generated by structure from motion from aerial images of temporally separated surveys, enabling rapid and targeted implementation of measures.
View Article and Find Full Text PDFExploratory Pilot Study Engages Community Health Workers to Test Drone-Based Package Delivery System for Personal Protective Equipment in High-Risk Appalachia Population.
Health Promot Pract
December 2024
University of Kentucky College of Nursing, Lexington, KY, USA.
During the COVID-19 pandemic, high-risk clients' and caregivers' access to essential personal protective equipment (PPE) was limited especially in many remote areas of Appalachia. A multidisciplinary team of community and university partners explored how to coordinate the use of community health workers (CHWs) and drone technologies to increase access to PPE in rural and remote Appalachian regions. CHWs recruited 10 Homeplace clients in an exploratory study of drone-based package delivery of PPE to assess importance and effectiveness of PPE self-efficacy related to PPE use, use of PPE, and ease and acceptability of drone delivery (following delivery only).
View Article and Find Full Text PDFMonitoring soil arsenic content in densely vegetated agricultural areas using UAV hyperspectral, satellite multispectral and SAR data.
J Hazard Mater
February 2025
School of Geography and Planning, Sun Yat-sen University, Guangzhou 510275, China; Guangxi Key Laboratory of Agro-Environment and Agro-Product Safety, College of Agriculture, Guangxi University, Nanning 530004, China. Electronic address:
Accurate and effective monitoring of potentially toxic elements (PTEs) in soil across vast regions is crucial for environmental modeling and public health. While remote sensing (RS) technology provides a promising approach by detecting soil spectrum, dense and persistent vegetation cover in subtropical agricultural areas hinders acquisition of bare soil signals, limiting soil PTEs monitoring. To address this challenge, the present study proposed an innovative method for monitoring soil arsenic (As) content by using vegetation characteristics retrieved from RS data as proxy variables, given soil-vegetation interactions.
View Article and Find Full Text PDFPermafrost thaw subsidence, sea-level rise, and erosion are transforming Alaska's Arctic coastal zone.
Proc Natl Acad Sci U S A
December 2024
Alfred Wegener Institute Helmholtz-Centre for Polar and Marine Research, Permafrost Section, Potsdam 14401, Germany.
Article Synopsis
- Arctic shorelines are increasingly vulnerable to climate change due to rising sea levels, thawing permafrost, and worsening storms, leading to significant coastal erosion.
- Past observations have primarily focused on erosion, neglecting the combined effects of sea-level rise and permafrost thaw subsidence, particularly in areas like Alaska's Arctic Coastal Plain, which is essential for Indigenous communities and oil infrastructure.
- Projections indicate that by 2100, combined erosion and inundation could result in 6-8 times more land loss than erosion alone, potentially damaging 40-65% of infrastructure in coastal villages and emphasizing the urgent need for adaptive planning to address these climate hazards.
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