Results 81 to 90 of about 708,716 (215)

ENVIRONMENT PROTECTION AND ENVIRONMENT MONITORING ISSUES IN THE PROJECTS OF SUBGLACIAL LAKES STUDIES IN ANTARCTICA

Лëд и снег, 2015
Antarctic subglacial lakes can represent extreme natural habitats for microorganisms from the position of their evolution and adaptation, as well as they can contain the information on Antarctic ice sheet history and climatic changes in their sediments ...
I. A. Alekhina, N. I. Vasiliev, V. Ya. Lipenkov   +2 more
doaj   +1 more source

Anisotropic Melt Inclusions as a Confounding Signal for Ice‐Penetrating Radar Observations

Geophysical Research Letters, Volume 53, Issue 5, 16 March 2026.
Abstract Ice‐penetrating radar is a powerful geophysical tool for understanding the subsurfaces of Earth, Mars, and icy moons. Radar reflectivity, attenuation, and birefringence are used to infer subsurface hydrology, englacial temperature, water content, and crystal orientation fabric.
A. H. Cheng, D. M. Schroeder, N. S. Wolfenbarger, R. Shaper, C. Seltzer, B. Hills   +5 more
wiley   +1 more source

A glaciotectonic landform in the Shyok valley, Trans-Himalayan Karakoram Range, India

Journal of Glaciology
This study reports and discusses the first case of glaciotectonic landforms in the Shyok valley of the Trans-Himalayan Karakoram Range, Ladakh, where a large decomposed granite megablock (8.2 km2) along with underlying diamicton is thrust over the ...
Abdul Qayoom Paul, Harish Bahuguna, Parveen Kumar   +2 more
doaj   +1 more source

Glacier sliding, seismicity and sediment entrainment

Annals of Glaciology, 2019
The evolution of glaciers and ice sheets depends on processes in the subglacial environment. Shear seismicity along the ice–bed interface provides a window into these processes. Such seismicity requires a rapid loss of strength that is typically ascribed
Bradley Paul Lipovsky, Colin R. Meyer, Lucas K. Zoet, Christine McCarthy, Dougal D. Hansen, Alan W. Rempel, Florent Gimbert   +6 more
doaj   +1 more source

Sedimentological and mineralogical characteristics of active glacial sediments in the Indian Himalaya regions

Geology, Ecology, and Landscapes, 2020
Glaciated sediments are a significant source to know the glacier environment processes. Glacial meltwater streams draining from the Himalayan glaciers carry with a different type of sediment sizes, because of the supraglacial, englacial, and subglacial ...
Sarfaraz Ahmad, Zabiullah Ansari, Mohd Mulhim   +2 more
doaj   +1 more source

Radar Specularity Content Indicates a Strong Geothermal Heat Flow Gradient in Antarctica's South Pole Basin

Geophysical Research Letters, Volume 53, Issue 5, 16 March 2026.
Abstract Accurate estimates of geothermal heat flow (GHF) are critical for predicting basal melting and identifying stable sites for ancient ice, yet GHF remains one of the least constrained boundary conditions for the Antarctic Ice Sheet. We evaluate nine published Antarctic GHF models against radar‐derived specularity content in the South Pole Basin (
M. Kerr, D. A. Young, S. Yan, C. Pierce
wiley   +1 more source

Grain-size distribution and origins of unconsolidated fine sediments in ice-free areas, Soya Coast, East Dronning Maud Land, East Antarctica

Antarctic Record, 2005
Unconsolidated fine sediments (UFS), sporadically deposited in Soya Coast ice-free areas, have often been described as glacial deposits (till) or subglacial till in previous studies, but their genesis and depositional environments have never been ...
Shogo Iwasaki, Hideki Miura, Hideaki Maemoku   +2 more
doaj   +1 more source

Predicting potential Arctic kelp distribution and lower‐depth biomass from seafloor irradiance

Limnology and Oceanography: Methods, Volume 24, Issue 3, March 2026.
Abstract Kelps have an extensive distribution in Arctic coastal waters. However, quantifying their role in the Arctic food web and carbon cycle is challenged by the scarcity of documented geographical distribution, standing stocks and production. Here we present a framework based on an empirical function to predict the potential kelp distribution and ...
Laura Castro de la Guardia, Inka Bartsch, Haakon Hop, Sarina Niedzwiedz, Luisa Düsedau, Nora Diehl, Dorte Krause‐Jensen, Mikael Sejr, Thomas Gjerfluff Ager, Jean‐Pierre Gattuso, Robert W. Schlegel, Cale A. Miller, Karen Filbee‐Dexter, Pedro Duarte   +13 more
wiley   +1 more source

Basal conditions at Engabreen, Norway, inferred from surface measurements and inverse modelling

Journal of Glaciology, 2018
Engabreen is an outlet glacier of the Svartisen Ice Cap located in Northern Norway. It is a unique glacier due to the Svartisen Subglacial Laboratory which allows direct access to the glacier bed.
ANNE M. SOLGAARD, ALEXANDRA MESSERLI, THOMAS SCHELLENBERGER, CHRISTINE S. HVIDBERG, ASLAK GRINSTED, MIRIAM JACKSON, THOMAS ZWINGER, NANNA B. KARLSSON, DORTHE DAHL-JENSEN   +8 more
doaj   +1 more source

Revealing the Internal Structure of Mars‐Analog Glaciers From Drone‐Based Radar Sounding

Journal of Geophysical Research: Planets, Volume 131, Issue 3, March 2026.
Abstract Martian debris‐covered glaciers (DCGs) contain large quantities of water ice beneath a protective layer of rock and dust. Properties of the overlying regolith such as density and depth to ice are critical parameters for guiding in situ resource utilization (ISRU) of water and coring missions targeting potential habitats.
Roberto J. Aguilar, John W. Holt, Michael S. Christoffersen, Tyler M. Meng, Stefano Nerozzi   +4 more
wiley   +1 more source