Results 31 to 40 of about 75,003 (265)

Near-margin ice thickness and subglacial water routing, Leverett Glacier, Greenland

open access: yesArctic, Antarctic, and Alpine Research, 2018
Ice thickness measurements near the margin of the Greenland Ice Sheet (GrIS) are relatively sparse, presenting issues for modeling ice-flow dynamics, ice-sheet change, and subglacial hydrology.
Neil Ross   +4 more
doaj   +1 more source

Application of a two-step approach for mapping ice thickness to various glacier types on Svalbard [PDF]

open access: yesThe Cryosphere, 2017
The basal topography is largely unknown beneath most glaciers and ice caps, and many attempts have been made to estimate a thickness field from other more accessible information at the surface.
J. J. Fürst   +14 more
doaj   +1 more source

The Influence of Snow and Ice Albedo towards Improved Lake Ice Simulations

open access: yesHydrology, 2021
Lake ice models are a vital tool for studying the response of ice-covered lakes to changing climates throughout the world. The Canadian Lake Ice Model (CLIMo) is a one-dimensional freshwater ice cover model that simulates Arctic and sub-Arctic lake ice ...
Alexis L. Robinson   +2 more
doaj   +1 more source

Assessment of contemporary satellite sea ice thickness products for Arctic sea ice [PDF]

open access: yesThe Cryosphere, 2019
Advances in remote sensing of sea ice over the past two decades have resulted in a wide variety of satellite-derived sea ice thickness data products becoming publicly available.
H. Sallila   +3 more
doaj   +1 more source

Radiometric analysis of digitized Z-scope records in archival radar sounding film

open access: yesJournal of Glaciology, 2022
The earliest airborne geophysical campaigns over Antarctica and Greenland in the 1960s and 1970s collected ice penetrating radar data on 35 mm optical film. Early subglacial topographic and englacial stratigraphic analyses of these data were foundational
Dustin M. Schroeder   +5 more
doaj   +1 more source

Radio techniques for the measurement of ice thickness [PDF]

open access: yesPolar Record, 1963
In recent years, phenomena observed in two quite separate fields of study have led to the suggestion that radio waves may propagate through cold ice masses with sufficiently small loss by absorption to permit the thickness to be measured, and some information about the nature of the bottom surface to be derived by radar.
openaire   +1 more source

Baltic sea ice thickness estimation based on X-band SAR data and background information

open access: yesAnnals of Glaciology
In this study an operational sea ice thickness (SIT) estimation algorithm, based on HH-polarized X-band synthetic aperture radar (SAR) data, background information from the most recent, typically from the previous day, available daily Baltic Sea ice ...
Juha Antero Karvonen, Bin Cheng
doaj   +1 more source

Drone Surveying of Volumetric Ice Growth in a Steep River

open access: yesFrontiers in Remote Sensing, 2021
Representative ice thickness data is essential for accurate hydraulic modelling, assessing the potential for ice induced floods, understanding environmental conditions during winter and estimation of ice-run forces. Steep rivers exhibit complex freeze-up
Einar Rødtang   +2 more
doaj   +1 more source

Nutrient/TOR signaling controls adipose mitochondrial transcription factor A (TFAM) to regulate organismal growth in Drosophila

open access: yesFEBS Letters, EarlyView.
Animals must match their growth rate to available nutrients. We show that in Drosophila larvae, the nutrient‐sensing TOR kinase controls growth by regulating levels of TFAM, a key regulator of mitochondrial function, in the adipose tissue. When nutrients are abundant, high TOR activity suppresses TFAM, lowering mitochondrial bioenergetic activity and ...
Shrivani Sriskanthadevan‐Pirahas   +4 more
wiley   +1 more source

Near-real-time Arctic sea ice thickness and volume from CryoSat-2 [PDF]

open access: yesThe Cryosphere, 2016
Timely observations of sea ice thickness help us to understand the Arctic climate, and have the potential to support seasonal forecasts and operational activities in the polar regions.
R. L. Tilling, A. Ridout, A. Shepherd
doaj   +1 more source

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