Results 21 to 30 of about 270,103 (305)

Ice thickness measurements by Raman scattering [PDF]

open access: yesOptics Letters, 2014
A compact Raman LIDAR system with a spectrograph was used for express ice thickness measurements. The difference between the Raman spectra of ice and liquid water is employed to locate the ice-water interface while elastic scattering was used for air-ice surface detection.
Pershin, Sergey M.   +4 more
openaire   +3 more sources

Assimilating CryoSat-2 freeboard to improve Arctic sea ice thickness estimates [PDF]

open access: yesThe Cryosphere, 2023
In this study, a new method to assimilate freeboard (FB) derived from satellite radar altimetry is presented with the goal of improving the initial state of sea ice thickness predictions in the Arctic.
I. Sievers   +3 more
doaj   +1 more source

Airborne mapping of the sub-ice platelet layer under fast ice in McMurdo Sound, Antarctica [PDF]

open access: yesThe Cryosphere, 2021
Basal melting of ice shelves can result in the outflow of supercooled ice shelf water, which can lead to the formation of a sub-ice platelet layer (SIPL) below adjacent sea ice.
C. Haas   +11 more
doaj   +1 more source

Sea-ice freeboard and thickness in the Ross Sea from airborne (IceBridge 2013) and satellite (ICESat 2003–2008) observations

open access: yesAnnals of Glaciology, 2020
NASA's Operation IceBridge mission flew over the Ross Sea, Antarctica (20 and 27 November 2013) and collected data with Airborne Topographic Mapper (ATM) and Digital Mapping System (DMS).
Liuxi Tian   +5 more
doaj   +1 more source

Simultaneous estimation of wintertime sea ice thickness and snow depth from space-borne freeboard measurements [PDF]

open access: yesThe Cryosphere, 2020
A method of simultaneously estimating snow depth and sea ice thickness using satellite-based freeboard measurements over the Arctic Ocean during winter was proposed.
H. Shi   +7 more
doaj   +1 more source

The sub-ice platelet layer and its influence on freeboard to thickness conversion of Antarctic sea ice [PDF]

open access: yesThe Cryosphere, 2014
This is an investigation to quantify the influence of the sub-ice platelet layer on satellite measurements of total freeboard and their conversion to thickness of Antarctic sea ice. The sub-ice platelet layer forms as a result of the seaward advection of
D. Price   +5 more
doaj   +1 more source

Summer sea ice characteristics and morphology in the Pacific Arctic sector as observed during the CHINARE 2010 cruise [PDF]

open access: yesThe Cryosphere, 2013
In the summer of 2010, atmosphere–ice–ocean interaction was studied aboard the icebreaker R/V Xuelong during the Chinese National Arctic Research Expedition (CHINARE), in the sea ice zone of the Pacific Arctic sector between 150° W and 180° W up to 88.5°
H. Xie   +6 more
doaj   +1 more source

Glacier thickness and volume estimation in the Upper Indus Basin using modeling and ground penetrating radar measurements

open access: yesAnnals of Glaciology, 2023
In the Himalaya, ice thickness data are limited, and field measurements are even scarcer. In this study, we employed the GlabTop model to estimate ice reserves in the Jhelum (1.9 ± 0.6 km3) and Drass (2.9 ± 0.9 km3) sub-basins of the Upper Indus Basin ...
Shakil Ahmad Romshoo   +3 more
doaj   +1 more source

Basal roughness of the East Antarctic Ice Sheet in relation to flow speed and basal thermal state

open access: yesAnnals of Glaciology, 2020
Basal motion of ice sheets depends in part on the roughness and material properties of the subglacial bed and the occurrence of water. To date, basal motion represents one of the largest uncertainties in ice-flow models. It is that component of the total
Olaf Eisen   +4 more
doaj   +1 more source

Estimating Arctic Sea Ice Thickness with CryoSat-2 Altimetry Data Using the Least Squares Adjustment Method

open access: yesSensors, 2020
Satellite altimeters can be used to derive long-term and large-scale sea ice thickness changes. Sea ice thickness retrieval is based on measurements of freeboard, and the conversion of freeboard to thickness requires knowledge of the snow depth and snow,
Feng Xiao   +5 more
doaj   +1 more source

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