Results 11 to 20 of about 2,106 (266)

Evaluating deep-learning models for debris-covered glacier mapping

open access: yesApplied Computing and Geosciences, 2021
In recent decades, mountain glaciers have experienced the impact of climate change in the form of accelerated glacier retreat and other glacier-related hazards such as mass wasting and glacier lake outburst floods.
Zhiyuan Xie   +2 more
doaj   +1 more source

Regional Glacier Mapping Using Optical Satellite Data Time Series

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2016
The first of two Sentinel-2 satellites, launched mid2015, has similar characteristics as the Landsat TM/ETM + /OLI satellites. Together, these satellites will produce a tremendous quantity of optical images worldwide for glacier mapping, with increasing ...
Solveig Havstad Winsvold   +2 more
doaj   +1 more source

94 GHz Radar Backscatter Characteristics of Alpine Glacier Ice

open access: yesGeophysical Research Letters, 2023
Measuring the radar backscatter characteristics of glacier ice at different frequencies and incidence angles is fundamental to predicting the glacier mapping performance of a sensor. However, such measurements at 94 GHz do not exist.
W. D. Harcourt   +4 more
doaj   +1 more source

CONCEPTUAL FRAMEWORK OF COMBINED PIXEL AND OBJECT-BASED METHOD FOR DELINEATION OF DEBRIS-COVERED GLACIERS [PDF]

open access: yesISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2018
Delineation of the glacier is an important task for understanding response of glaciers to climate. In Himalayan region, most of the glaciers are covered with debris.
R. Sahu, R. D. Gupta
doaj   +1 more source

Glacier classification from Sentinel-2 imagery using spatial-spectral attention convolutional model

open access: yesInternational Journal of Applied Earth Observations and Geoinformation, 2021
Glaciers are critical components of the cryosphere and most sources of water. The Sentinel-2 imagery provides an efficient and cost-effective way for the production of inventories of glaciers.
Shuai Yan   +7 more
doaj   +1 more source

Glacier shrinkage across High Mountain Asia

open access: yesAnnals of Glaciology, 2016
An assessment of glacier shrinkage (reduction of area) for all of High Mountain Asia requires a complete compilation of measured rates of change and also a methodology for objective comparison of rates.
J. Graham Cogley
doaj   +1 more source

Spatio-temporal variability in geometry and geodetic mass balance of Jostedalsbreen ice cap, Norway

open access: yesAnnals of Glaciology, 2023
The Jostedalsbreen ice cap is mainland Europe's largest ice cap and accommodates 20% (458 km2 in 2019) of the total glacier area of mainland Norway.
Liss M. Andreassen   +5 more
doaj   +1 more source

Large-Scale Debris Cover Glacier Mapping Using Multisource Object-Based Image Analysis Approach

open access: yesRemote Sensing, 2022
Large-scale debris cover glacier mapping can be efficiently conducted from high spatial resolution (HSR) remote sensing imagery using object-based image analysis (OBIA), which works on a group of pixels.
Kavita V. Mitkari   +5 more
doaj   +1 more source

Geochemical characterization of supraglacial debris via in situ and optical remote sensing methods: a case study in Khumbu Himalaya, Nepal [PDF]

open access: yesThe Cryosphere, 2012
Surface glacier debris samples and field spectra were collected from the ablation zones of Nepal Himalaya Ngozumpa and Khumbu glaciers in November and December 2009.
K. A. Casey, A. Kääb, D. I. Benn
doaj   +1 more source

Multi-sensor remote sensing to map glacier debris cover in the Greater Caucasus, Georgia

open access: yesJournal of Glaciology, 2021
Global warming is causing glaciers in the Caucasus Mountains and around the world to lose mass at an accelerated pace. As a result of this rapid retreat, significant parts of the glacierized surface area can be covered with debris deposits, often making ...
Iulian-Horia Holobâcă   +8 more
doaj   +1 more source

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