Results 61 to 70 of about 18,397 (226)

Iceberg properties and distributions in three Greenlandic fjords using satellite imagery

Annals of Glaciology, 2017
Icebergs calved from tidewater glaciers represent about one third to one half of the freshwater flux from the Greenland ice sheet to the surrounding ocean. Using multiple satellite datasets, we quantify the first fjord-wide distributions of iceberg sizes
Daniel J. Sulak, David A. Sutherland, Ellyn M. Enderlin, Leigh A. Stearns, Gordon S. Hamilton   +4 more
doaj   +1 more source

Cryospheric water regime by its functions and services in China

Advances in Climate Change Research, 2021
The terrestrial cryosphere functions to provide critical freshwater and serve societies and ecosystems, driving nature's contributions to people (NCP). This becomes increasingly important for the oasis areas in Northwest China.
Wei Zhang, Xiaoming Wang, Yong-Ping Shen, Xue-Wen Yang, Yu-Wei Wu, An-An Chen, Xue-Jiao Wu, Shi-Wei Liu, Yang Yang, Jing-Lin Zhang, Chen-Yu Li   +10 more
doaj   +1 more source

Disposition Model for Permafrost Degradation in Mountainous Regions

Permafrost and Periglacial Processes, EarlyView.
ABSTRACT Permafrost is a widespread thermal phenomenon in Arctic and high mountain regions that, in combination with steep terrain, exerts a key control on slope stability. Its degradation in response to climatic warming can modify the likelihood and timing of rockfall, debris flow and related mass movements. Robust information on the current state and
Peter Mani, Simon Allen, Mathias Bavay, Nils Hählen, Markus Stoffel   +4 more
wiley   +1 more source

Depositional and Hydrological Relationships Between Buried Dead Ice and the Active Layer in the McMurdo Dry Valleys, Antarctica: A Study of Sediment Geochemistry and Cation Concentrations

Permafrost and Periglacial Processes, EarlyView.
ABSTRACT The McMurdo Dry Valleys, the largest ice‐free region in Antarctica, are home to a cold‐desert hydrologic system of glaciers, snowbanks, streams, and lakes. Freshwater is also stored as dead glacial ice, which is poorly constrained in terms of ion concentrations and interactions with both in situ and overlying sediments.
Matthew C. Witscheber, Kate M. Swanger
wiley   +1 more source

Glacial Meltwater Channel

, 2022
Moss-covered cobbles and boulders mark a dry channel that was once the path of a glacial meltwater stream. Evidence of former glacial meltwater channels is plentiful in the Ellis Pond quadrangle, with many paths revealed by lidar topographic data ...
Spigel, Lindsay
core  

Quantifying the Surface Deformation of Pingos on the Alaskan North Slope Using Interferometric Synthetic Aperture Radar (InSAR)

Permafrost and Periglacial Processes, EarlyView.
ABSTRACT Pingos are large mounds with cores formed of intrusive ice that form in periglacial landscapes. These ice structures can form in regions of discontinuous permafrost, commonly as hydraulic or open‐system pingos, or in locations of continuous permafrost, commonly as hydrostatic or closed‐system pingos.
Venezia M. Follingstad, Roger J. Michaelides, Matthew R. Siegfried, Tyler M. Meng, John Bradford, Kynan H. G. Hughson, Alexia R. Kubas, Andrew Mullen, Enrica Quartini, Austin Routt, Hanna G. Sizemore, Andrei Swidinsky, Britney E. Schmidt   +12 more
wiley   +1 more source

Glacial meltwater and sea ice meltwater in the Prydz Bay, Antarctica

, 2003
Measurements of deltaD and salinity were carried out in the Prydz Bay during two Antarctic cruises, the 13th and the 14th Chinese National Antarctic Research expeditions (CHINARE). Mass balance calculations based on deltaD and salinity showed that during
Qiu, YS, Huang, YP, 黄奕普, Jin, DQ, Chen, M, Liu, GS, Cai, PH, 陈敏, 刘广山, 邱雨生, Zhou, XH, 蔡平河, Chen, XB   +12 more
core   +1 more source

Integrating SfM, LiDAR and TLS for High‐Resolution Monitoring of Palsa Surface Changes and Degradation Dynamics

Permafrost and Periglacial Processes, EarlyView.
ABSTRACT Understanding fine‐scale surface changes is crucial for quantifying ecosystem dynamics and detecting landscape changes. Palsas, comparably small peatland elevations with an ice‐rich permafrost core, undergo natural cycles of growth and degradation. They can also serve as indicators of climate change in subarctic regions. Because they typically
Alexander Störmer, Timo Kumpula, Pasi Korpelainen, Benjamin Burkhard   +3 more
wiley   +1 more source

Ice sheets as a significant source of highly reactive nanoparticulate iron to the oceans

, 2014
The Greenland and Antarctic Ice Sheets cover ~\n10% of global land surface, but are rarely considered as active components of the global iron cycle. The ocean waters around both ice sheets harbour highly productive coastal ecosystems, many of which are ...
Peter J. Statham, Nienow, Peter, Wadham, Jemma L., Statham, Peter J., Lee, Katherine, Telling, Jon, Peter Nienow, Jemma L. Wadham, Katherine Lee, Benning, Liane G., Andrew Tedstone, Hawkings, Jon R., Tranter, Martyn, Raiswell, Rob, Jon Telling, Rob Raiswell, Tedstone, Andrew J, Tedstone, Andrew, Jon R. Hawkings, Martyn Tranter, Liane G. Benning   +20 more
core   +1 more source

Winter meltwater storage on Antarctica’s George VI Ice Shelf and tributary glaciers, from synthetic aperture radar

Frontiers in Earth Science
The presence and storage of meltwater on Antarctic ice shelves has implications for ice-shelf stability and collapse, while meltwater on grounded tributary glaciers, if able to access the bed, could affect their dynamics.
Katherine A. Deakin, Ian C. Willis, Rebecca L. Dell   +2 more
doaj   +1 more source