Results 31 to 40 of about 4,434 (254)

A semi-automated, GIS-based framework for the mapping of supraglacial hydrology

Journal of Glaciology, 2023
Supraglacial drainage networks play an integral role in both glacier dynamics and run-off timing, and mapping them provides insight into their role in glacial systems.
Eleanor A Bash, Colette Shellian, Christine F Dow, Greg Mcdermid, Will Kochtitzky, Dorota Medrzycka, Luke Copland   +6 more
doaj   +1 more source

Terminus-driven retreat of a major southwest Greenland tidewater glacier during the early 19th century : insights from glacier reconstructions and numerical modelling [PDF]

, 2014
Peer ...
Nick, Faezeh M, Lea, JM, Morlighem, M, Van As, D, Lea, James M, Kjær, Kurt H., Schofield, J. Edward, Nick, FM, Kjaer, Kurt H., Schofield, JE, Rea, Brice R, Mair, Douglas WF, Schofield, J Edward, Weidick, Anker, Rea, Brice R., Morlighem, Mathieu, Lea, James M., Nick, Faezeh M., Rea, BR, Mair, Douglas W.F., Weidick, A, Mair, Douglas W. F., van As, Dirk, Mair, DWF, Kjaer, Kurt H, Kjær, KH   +25 more
core   +1 more source

Glacier area changes in Novaya Zemlya from 1986–89 to 2019–21 using object-based image analysis in Google Earth Engine

Journal of Glaciology, 2023
Climate change has had a significant impact on glacier recession, particularly in the Arctic, where glacier meltwater is an important contributor to global sea-level rise.
Asim Ali, Paul Dunlop, Sonya Coleman, Dermot Kerr, Robert W. McNabb, Riko Noormets   +5 more
doaj   +1 more source

Assessing ice-cliff backwasting and its contribution to total ablation of debris-covered Miage glacier, Mont Blanc massif, Italy [PDF]

, 2014
Continuous surface debris cover strongly reduces the ablation of glaciers, but high melt rates may occur at ice cliffs that are too steep to hold debris.
Brock, B.w., Reid, Tim, Brock, Benjamin
core   +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

Explorative Study on Mapping Surface Facies of Selected Glaciers from Chandra Basin, Himalaya Using WorldView-2 Data

Remote Sensing, 2019
Mapping of surface glacier facies has been a part of several glaciological applications. The study of glacier facies in the Himalayas has gained momentum in the last decade owing to the implications imposed by these facies on the melt characteristics of ...
Shridhar D. Jawak, Sagar F. Wankhede, Alvarinho J. Luis   +2 more
doaj   +1 more source

A near 90-year record of the evolution of El Morado Glacier and its proglacial lake, Central Chilean Andes

Journal of Glaciology, 2020
Using an ensemble of close- and long-range remote sensing, lake bathymetry and regional meteorological data, we present a detailed assessment of the geometric changes of El Morado Glacier in the Central Andes of Chile and its adjacent proglacial lake ...
David Farías-Barahona, Ryan Wilson, Claudio Bravo, Sebastián Vivero, Alexis Caro, Thomas E. Shaw, Gino Casassa, Álvaro Ayala, Alonso Mejías, Stephan Harrison, Neil F. Glasser, James McPhee, Olaf Wündrich, Matthias H. Braun   +13 more
doaj   +1 more source

Semi-Automated Mapping of Complex-Terrain Mountain Glaciers by Integrating L-Band SAR Amplitude and Interferometric Coherence

Remote Sensing, 2022
Mapping the outlines of glaciers has primarily relied on the interpretation of satellite optical images. However, the accurate delineation of glaciers in complex terrain mountain regions remains challenging, mainly because the supraglacial debris-covered
Bo Zhang, Guoxiang Liu, Xiaowen Wang, Yin Fu, Qiao Liu, Bing Yu, Rui Zhang, Zhilin Li   +7 more
doaj   +1 more source

Molecular characterization of covRS mutations in M1UK Streptococcus pyogenes

FEBS Open Bio, EarlyView.
Group A Streptococcus (GAS) acquires covRS mutations driving a hypervirulent bacterial state, frequently associated with invasive disease‐like necrotizing fasciitis. We demonstrate that the newly emerged M1UK GAS lineage can also acquire these mutations.
Jarrad Pritchard, Emma‐Jayne Proctor, Jiawa Wang, Nikolas P. Johnston, Andrew Hayes, Georgia McCorkell, Haibo Yu, Jai Tree, Mark R. Davies, Mark J. Walker, Ronald Sluyter, Stephan Brouwer, Martina L. Sanderson‐Smith   +12 more
wiley   +1 more source

Long-term (1951–2023) surface changes of the Belvedere Glacier observed through aerial and UAV orthophotos

Acta Universitatis Carolinae Geographica
Glacier retreat is a key indicator of climate change, with significant implications for geomorphological hazards and ecosystem stability. This article focuses on the surface evolution of the Belvedere Glacier from 1951 to 2023.
Roberto Sergio Azzoni, Irene Maria Bollati, Manuela Pelfini, Stefano Valzasina, Lukáš Brodský   +4 more
doaj   +1 more source