Results 41 to 50 of about 38,554 (275)

Radio-echo sounding of the lambert glacier basin [PDF]

Journal of Glaciology, 1975
AbstractSeveral seasons of aerial ice-thickness soundings over the region of the Prince Charles Mountains, the Lambert Glacier system, the Amery Ice Shelf, and their drainage basin in east Antarctica have now been completed. The measurements provide detailed maps of surface topography and ice thickness over an area of about 2 X 105 km2.
V. I. Morgan, W. F. Budd
openaire   +1 more source

Ice stream or not? Radio-echo sounding of Carlson Inlet, West Antarctica [PDF]

The Cryosphere, 2011
The Antarctic Ice Sheet loses mass to the surrounding ocean mainly by drainage through a network of ice streams: fast-flowing glaciers bounded on either side by ice flowing one or two orders of magnitude more slowly.
E. C. King
doaj   +1 more source

Removal of ‘strip noise’ in radio-echo sounding data using combined wavelet and 2-D DFT filtering

Annals of Glaciology, 2019
Radio-echo sounding (RES) can be used to understand ice-sheet processes, englacial flow structures and bed properties, making it one of the most popular tools in glaciological exploration.
Bangbing Wang, Bo Sun, Jiaxing Wang, J. Greenbaum, Jingxue Guo, L. Lindzey, X. Cui, D. Young, D. Blankenship, M. Siegert   +9 more
semanticscholar   +1 more source

Deep multi-scale learning for automatic tracking of internal layers of ice in radar data

Journal of Glaciology, 2021
In this study, our goal is to track internal ice layers on the Snow Radar data collected by NASA Operation IceBridge. We examine the application of deep learning methods on radar data gathered from polar regions.
Maryam Rahnemoonfar, Masoud Yari, John Paden, Lora Koenig, Oluwanisola Ibikunle   +4 more
doaj   +1 more source

Distribution of cold and temperate ice in glaciers on the Nordenskiold Land, Spitsbergen, from ground-based radio-echo sounding

Ice and Snow, 2019
Data of ground-based radio-echo sounding of 16 glaciers located on the Nordenskiold Land, Spitsbergen, carried out in springs of 1999, 2007 and 2010–2013, allowed defining five glaciers as of the cold thermal type while other eleven ones were polythermal
Y. Macheret, A. Glazovsky, I. Lavrentiev, I. O. Marchuk   +3 more
semanticscholar   +1 more source

A comparison of automated approaches to extracting englacial-layer geometry from radar data across ice sheets

Annals of Glaciology, 2020
Radar surveys across ice sheets typically measure numerous englacial layers that can often be regarded as isochrones. Such layers are valuable for extrapolating age–depth relationships away from ice-core locations, reconstructing palaeoaccumulation ...
Richard Delf, Dustin M. Schroeder, Andrew Curtis, Antonios Giannopoulos, Robert G. Bingham   +4 more
doaj   +1 more source

Layer optimized SAR processing and slope estimation in radar sounder data

Journal of Glaciology, 2019
Englacial layers in Antarctica and Greenland are indicators of the dynamic, rheological and subglacial configuration of the ice sheets. Airborne radar sounder data is the primary remote sensing solution for directly observing englacial layers and ...
Davide Castelletti, Dustin M. Schroeder, Elisa Mantelli, Andrew Hilger   +3 more
doaj   +1 more source

Airborne radio echo sounding on the Shirase Glacier and its drainage basin, East Antarctica

Antarctic Record, 1981
Airborne radio echo sounding carried out on the Shirase Glacier and its drainage basin in January 1980 is described. The new sounder (NIPR-A) was operated at 179 MHz on board a Pilatus Porter PC-6.
Makoto Wada, Shinji Mae
doaj   +1 more source

Dielectric properties of soils and assessment of their hydrothermal state under snow cover based on radio-echo sounding data

Лëд и снег, 2022
Snow cover significantly affects the thermal regime of the underlying soils, and its assessment and monitoring are an urgent task of remote sensing studies.
Yu. Ya. Macheret, A. V. Sosnovsky, A. F. Glazovsky   +2 more
doaj   +1 more source

Gut microbiome and aging—A dynamic interplay of microbes, metabolites, and the immune system

FEBS Letters, EarlyView.
Age‐dependent shifts in microbial communities engender shifts in microbial metabolite profiles. These in turn drive shifts in barrier surface permeability of the gut and brain and induce immune activation. When paired with preexisting age‐related chronic inflammation this increases the risk of neuroinflammation and neurodegenerative diseases.
Aaron Mehl, Eran Blacher
wiley   +1 more source