Results 51 to 60 of about 1,538,149 (347)

Mapping snow depth on Canadian sub-arctic lakes using ground-penetrating radar [PDF]

The Cryosphere, 2023
Ice thickness across lake ice is mainly influenced by the presence of snow and its distribution, which affects the rate of lake ice growth. The distribution of snow depth over lake ice varies due to wind redistribution and snowpack metamorphism ...
A. F. Pouw, A. F. Pouw, H. Kheyrollah Pour, H. Kheyrollah Pour, A. MacLean, A. MacLean   +5 more
doaj   +1 more source

Calving Seasonality Associated With Melt‐Undercutting and Lake Ice Cover

Geophysical Research Letters, 2020
A detailed understanding of calving processes at the lacustrine margins of the Greenland ice sheet is necessary for accurately forecasting its dynamic response to ongoing climate change.
Joseph Mallalieu, J. Carrivick, D. Quincey, Mark W. Smith   +3 more
semanticscholar   +1 more source

The backscattering characteristics of thermokarst lake ice in the qinghai-tibet plateau from SAR [PDF]

The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2014
A thermokarst lake is an important indicator of changes in climate, which cause considerable thermal distribution to the surrounding permafrost. The imaging radar has demonstrated the capability to determine when and which lakes freeze or do not freeze ...
Z. Li, B. Tian, P. Tang
doaj   +1 more source

Source of Lake Vostok Cations Constrained with Strontium Isotopes [PDF]

, 2016
Lake Vostok is the largest sub-glacial lake in Antarctica. The primary source of our current knowledge regarding the geochemistry and biology of the lake comes from the analysis of refrozen lake water associated with ice core drilling. Several sources of
George Royston-Bishop, John C. Priscu, Kathleen A. Welch, Martyn Tranter, W. Berry Lyons   +4 more
core   +3 more sources

Lake Ice Investigation at Peters Lake, Alaska [PDF]

Journal of Glaciology, 1963
AbstractIn this paper a study of lake ice at Peters Lake with respect to crystallographic nature and impurity in crystal grain boundaries is described. The appearance of the ice structure in 1962 was quite uniform over the whole area of the lake; it showed predominantly horizontal c-axes. Another type of ice with predominantly vertical c-axes could not
Jiro Muguruma, Katsuhiro Kikuchi
openaire   +1 more source

Application of GNSS Interferometric Reflectometry for the Estimation of Lake Ice Thickness

Remote Sensing, 2020
Lake ice thickness is a sensitive indicator of climate change largely through its dependency on near-surface air temperature and on-ice snow mass (depth and density). Monitoring of the seasonal variations and trends in ice thickness is also important for
Y. Ghiasi, C. Duguay, Justin Murfitt, J. V. D. Sanden, A. Thompson, H. Drouin, C. Prévost   +6 more
semanticscholar   +1 more source

Interaction between ice sheet dynamics and subglacial lake circulation: a coupled modelling approach [PDF]

The Cryosphere, 2010
Subglacial lakes in Antarctica influence to a large extent the flow of the ice sheet. In this study we use an idealised lake geometry to study this impact. We employ a) an improved three-dimensional full-Stokes ice flow model with a nonlinear rheology, b)
M. Thoma, K. Grosfeld, C. Mayer, F. Pattyn   +3 more
doaj  

Regional Variability and Drivers of Below Ice CO2 in Boreal and Subarctic Lakes [PDF]

, 2015
Northern lakes are ice-covered for considerable portions of the year, where carbon dioxide (CO2) can accumulate below ice, subsequently leading to high CO2 emissions at ice-melt.
Denfeld, Blaize A., Kortelainen, Pirkko, Rantakari, Miitta, Sobek, Sebastian, Weyhenmeyer, Gesa A.   +4 more
core   +1 more source

Simulating lake ice phenology using a coupled atmosphere–lake model at Nam Co, a typical deep alpine lake on the Tibetan Plateau [PDF]

The Cryosphere
Simulating the ice phenology of deep alpine lakes is important and challenging in coupled atmosphere–lake models. In this study, the Weather Research and Forecasting (WRF) model, coupled with two lake models, the freshwater lake (WRF–FLake) model and the
X. Zhou, B. Wang, X. Ma, Z. La, K. Yang
doaj   +1 more source

Optical Properties of Deep Ice at the South Pole - Absorption [PDF]

, 1997
We discuss recent measurements of the wavelength-dependent absorption coefficients in deep South Pole ice. The method uses transit time distributions of pulses from a variable-frequency laser sent between emitters and receivers embedded in the ice.
AMANDA Collaboration, Askebjer, P., Barwick, S. W., Bergström, L., Bouchta, A., Carius, S., Dalberg, E., Engel, K., Erlandsson, B., Goobar, A., Gray, L., Hallgren, A., Halzen, F., Heukenkamp, H., Hulth, P. O., Hundertmark, S., Jacobsen, J., Kandhadai, V., Karle, A., Liubarsky, I., Lowder, D., Miller, T., Mock, P., Morse, R. M., Porrata, R., Price, P. B., Richards, A., Rubinstein, H., Schneider, E., Spiering, C., Streicher, O., Sun, Q., Thon, T., Tilav, S., Walck, C., Wischnewski, R., Yodh, G. B.   +36 more
core   +2 more sources