Results 11 to 20 of about 519,963 (333)
Ice thickness measurements by Raman scattering [PDF]
Optics 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 +5 more sources
Assimilating CryoSat-2 freeboard to improve Arctic sea ice thickness estimates [PDF]
The 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 +2 more sources
Simultaneous estimation of wintertime sea ice thickness and snow depth from space-borne freeboard measurements [PDF]
The 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 +2 more sources
Sensors, 2018 Snow depth and sea ice thickness in the Polar Regions are significant indicators of climate change and have been measured over several decades by ice-tethered buoys.
Guangyu Zuo, Yinke Dou, Ruibo Lei
doaj +2 more sources
Coherent radar ice thickness measurements over the Greenland ice sheet [PDF]
Journal of Geophysical Research: Atmospheres, 2001 We developed two 150‐MHz coherent radar depth sounders for ice thickness measurements over the Greenland ice sheet. We developed one of these using connectorized components and the other using radio frequency integrated circuits (RFICs). Both systems are designed to use pulse compression techniques and coherent integration to obtain the high ...
Gogineni, Sivaprasad +9 more
openaire +3 more sources
Impact of spatial aliasing on sea-ice thickness measurements [PDF]
Annals of Glaciology, 2015 AbstractWe explore spatial aliasing of non-Gaussian distributions of sea-ice thickness. Using a heuristic model and >1000 measurements, we show how different instrument footprint sizes and shapes can cluster thickness distributions into artificial modes, thereby distorting frequency distribution, making it difficult to compare and communicate ...
Geiger, Cathleen A. +4 more
openaire +3 more sources
Journal of Glaciology, 2021 Knowledge of glacier volume is crucial for ice flow modelling and predicting the impacts of climate change on glaciers. Rugged terrain, harsh weather conditions and logistic costs limit field-based ice thickness observations in the Himalaya.
Mohd Anul Haq +2 more
doaj +2 more sources
Interannual variability in Transpolar Drift summer sea ice thickness and potential impact of Atlantification [PDF]
The Cryosphere, 2021 Changes in Arctic sea ice thickness are the result of complex interactions of the dynamic and variable ice cover with atmosphere and ocean. Most of the sea ice exiting the Arctic Ocean does so through Fram Strait, which is why long-term measurements of ...
H. J. Belter +16 more
doaj +2 more sources
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
Yusof Ghiasi +6 more
doaj +2 more sources
Low Cost and Compact FMCW 24 GHz Radar Applications for Snowpack and Ice Thickness Measurements. [PDF]
Sensors (Basel), 2020 Monitoring the evolution of snow on the ground and lake ice—two of the most important components of the changing northern environment—is essential. In this paper, we describe a lightweight, compact and autonomous 24 GHz frequency-modulated continuous ...
Pomerleau P +7 more
europepmc +2 more sources