Results 11 to 20 of about 142,920 (284)

Improved Delineation of Individual Outlet Glacier Drainage Basins From Tandem-X Elevations and Sentinel-1 Velocities [PDF]

IGARSS 2019 - 2019 IEEE International Geoscience and Remote Sensing Symposium, 2019
Individual drainage basins of ice sheets specify the glaciated area that is drained by a single outlet glacier. These catchments are needed to partition mass balance measurements to the single glacier level. Until now complete glacier inventories that contain annotated basin information are missing for the Earth’s two ice sheets.
Dana Floricioiu, Lukas Krieger
exaly   +3 more sources

Delineation of Debris-Covered Glaciers Based on a Combination of Geomorphometric Parameters and a TIR/NIR/SWIR Band Ratio

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2016
Accurate mapping of glaciers is important for the management of water resources, studying glacier mass-balance, and monitoring glacier health. However, many glaciers are partially covered by debris of varying thicknesses, and these debris-covered glacier areas are difficult to distinguish clearly from the adjacent valley rock using optical remote ...
Alifu Haireti, Brian Alan Johnson
exaly   +3 more sources

Characterization of recharge components for delineation of a high-alpine rock glacier spring catchment, Ötztal Alps (northern Italy) [PDF]

Hydrogeology Journal
Abstract Rock glaciers provide shallow groundwater reservoirs that affect the hydrology of alpine headwater catchments. However, quantifying and identifying their temporally dominating recharge components, as well as delineating their hydrological catchment, can be challenging.
Giulia Bertolotti, Matevž Vremec, Simon Seelig, Karl Krainer, Thomas Wagner, Andrea Fischer, Gerfried Winkler   +6 more
openaire   +4 more sources

Analysing the suitability of radiometrically calibrated full-waveform lidar data for delineating Alpine rock glaciers [PDF]

ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2013
With full-waveform (FWF) lidar systems becoming increasingly available from different commercial manufacturers, the possibility for extracting physical parameters of the scanned surfaces in an area-wide sense, as addendum to their geometric ...
A. Roncat, M. Wieser, C. Briese, C. Briese, E. Bollmann, R. Sailer, C. Klug, N. Pfeifer   +7 more
doaj   +4 more sources

An Enhanced Index for Debris-Covered Glacier Boundary Extraction, With Emphasis on Low-Activity Glaciers, Using Time-Series SAR Imagery

International Journal of Digital Earth
Accurate delineation of glacier boundaries is essential for monitoring glacier changes. Debris-covered glaciers often resemble the textures of their surrounding terrain, making boundary extraction especially challenging.
Xiaowen Wang, Qiao Liu, Can Yang
exaly   +3 more sources

Deep Active Contour Models for Delineating Glacier Calving Fronts [PDF]

IGARSS 2022 - 2022 IEEE International Geoscience and Remote Sensing Symposium, 2022
This work has been accepted by IEEE TGRS for ...
Heidler, Konrad, Mou, Lichao, Loebel, Erik, Scheinert, Mirko, Lefèvre, Sébastien, Zhu, Xiao Xiang   +5 more
openaire   +5 more sources

A NEW DRAINAGE BASIN DELINEATION FOR THE SOUTHERN PATAGONIAN ICE FIELD BASED ON TERRASAR-X VELOCITIES AND TANDEM-X ELEVATIONS [PDF]

ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2020
The drainage basins or catchments for the Patagonian Ice Field are part of glacier inventories like the Randolph Glacier Inventory (RGI) or the Global Land Ice Measurements from Space (GLIMS).
L. Krieger, E. Johnson, D. Floricioiu
doaj   +1 more source

Which glaciers are the largest in the world?

Journal of Glaciology, 2023
Glacier monitoring has been internationally coordinated for more than 125 years. Despite this long history, there is no authoritative answer to the popular question: ‘Which glaciers are the largest in the world?’ Here, we present the first systematic ...
Ann Windnagel, Regine Hock, Fabien Maussion, Frank Paul, Philipp Rastner, Bruce Raup, Michael Zemp   +6 more
doaj   +1 more source

Assessing Glacier Boundaries in the Ala-Archa Valley of Kyrgyzstan by Using Sentinel-1 SAR Dataset and High-Resolution UAV Imagery

Remote Sensing, 2023
The significant retreat of glaciers in terms of climate change compels researchers to increase the frequency of studies regarding the transformations occurring in glacier boundaries. In this study, we provided glacier area delineation of Ala-Archa valley
Emilbek Zholdoshbekov, Murataly Duishonakunov, Qingyun Du, Mihai Voda   +3 more
doaj   +1 more source

Glacier changes over the past 144 years at Alexandra Fiord, Ellesmere Island, Canada

Journal of Glaciology, 2021
In this study, we use aerial photographs, satellite imagery and field observations to quantify changes in the area, terminus length, snowline elevation and surface elevation of eight glaciers in the Alexandra Fiord region, eastern Ellesmere Island ...
Allison N. Curley, William H. Kochtitzky, Benjamin R. Edwards, Luke Copland   +3 more
doaj   +1 more source