Results 71 to 80 of about 4,375 (213)

Neural Network‐Based Methods for Ocean Surface Wave Measurement Using Submarine Distributed Acoustic Sensing (DAS)

Journal of Geophysical Research: Machine Learning and Computation, Volume 3, Issue 1, February 2026.
Abstract Two new data‐driven models for estimating ocean surface waves from distributed acoustic sensing (DAS) submarine cable strain rate are developed using supervised machine learning on a 10‐day data set collected offshore of Oliktok Point, Alaska.
Jacob R. Davis, Jim Thomson, Madison Smith, A. Christian Stanciu   +3 more
wiley   +1 more source

THE RESEARCH ON ELEVATION CHANGE OF ANTARCTIC ICE SHEET BASED ON CRYOSAT-2 ALIMETER [PDF]

The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2018
In this paper, the Cryosat-2 altimeter data distributed by the ESA, and these data are processed to extract the information of the elevation change of the Antarctic ice sheet from 2010 to 2017.
Q. Sun, J. Wan, S. Liu, Y. Li
doaj   +1 more source

Variability of Arctic sea ice thickness and volume from CryoSat-2 [PDF]

Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, 2015
We present our estimates of the thickness and volume of the Arctic Ocean ice cover from CryoSat-2 data acquired between October 2010 and May 2014. Average ice thickness and draft differences are within 0.16 m of measurements from other sources (moorings, submarine, electromagnetic sensors, IceBridge).
R, Kwok, G F, Cunningham
openaire   +2 more sources

Dynamic Boundaries of Antarctic Active Subglacial Lakes Reveal Underestimated Water Volume Change and Overestimated Lakebed Active Area

Geophysical Research Letters, Volume 53, Issue 2, 28 January 2026.
Abstract This study revisited 158 documented active subglacial lakes across Antarctica, applying a height‐change anomaly delineation algorithm to CryoSat‐2 and ICESat‐2 satellite altimetry data to assemble a 14.75‐year (2010.5–2025.25) time series of active subglacial lake dynamics.
W. Sauthoff, M. R. Siegfried, R. A. Venturelli, B. E. Smith   +3 more
wiley   +1 more source

A Generalized Semi-Analytical model for delay/Doppler altimetry [PDF]

, 2014
International audienceThis paper introduces a new model for delay/Doppler altimetry, taking into account the effect of antenna mispointing. After defining the proposed model, the effect of the antenna mispointing on the altimetric waveform is analyzed as
Boy, François, Halimi, Abderrahim, Mailhes, Corinne, Moreau, Thomas, Tourneret, Jean-Yves   +4 more
core   +2 more sources

Small and Medium‐Sized Inland Waterbodies: Water Volume Predictions and Flood Implications

Water Resources Research, Volume 62, Issue 1, January 2026.
Abstract Small (<10 ha) and medium (10–100 ha) inland waterbodies are crucial for water storage and flood regulation, necessitating an improved understanding of their water volume. Traditional water volume measurement methods, modeling techniques, and advanced altimetry missions struggle to capture the non‐linear volume changes in these waterbodies ...
Ankit Sharma, Idhayachandhiran Ilampooranan   +1 more
wiley   +1 more source

Greenland Ice Sheet Elevation Change From CryoSat‐2 and ICESat‐2

Geophysical Research Letters
Although fluctuations in ice sheet surface mass balance lead to seasonal and interannual elevation changes, it is unclear if they are resolved differently by radar and laser satellite altimeters.
Nitin Ravinder, Andrew Shepherd, Inès Otosaka, Thomas Slater, Alan Muir, Lin Gilbert   +5 more
doaj   +1 more source

Snow depth estimation on leadless landfast ice using Cryo2Ice satellite observations [PDF]

The Cryosphere
Observations of snow on Arctic Sea ice are vitally important for sea ice thickness estimation, bio-physical processes, and human activities. While previous studies have combined CryoSat-2- and ICESat-2-derived freeboards to estimate snow depth over ...
M. Saha, J. Stroeve, J. Stroeve, D. Isleifson, J. Yackel, V. Nandan, V. Nandan, J. C. Landy, H. M. Lam   +8 more
doaj   +1 more source

The Sea Surface Height Spectrum of Internal Waves

Journal of Geophysical Research: Oceans, Volume 130, Issue 12, December 2025.
Abstract Internal waves and geostrophic motions contribute to sea surface height (SSH) variability at scales order 100 km and smaller. Although geostrophic motions have a well‐defined contribution in SSH, the internal wave contribution is complex and small enough to be confounded with noise.
S. M. Soares, S. T. Gille, T. K. Chereskin, M. Passaro   +3 more
wiley   +1 more source

Selection of the key earth observation sensors and platforms focusing on applications for Polar Regions in the scope of Copernicus system 2020-2030 [PDF]

, 2019
An optimal payload selection conducted in the frame of the H2020 ONION project (id 687490) is presented based on the ability to cover the observation needs of the Copernicus system in the time period 2020–2030.
Camps Carmona, Adriano José, Cote, Judith, Hyuk, Park, Lancheros Sepulveda, Estefany Maria, Pierotti, Stéphane, Rodríguez, Pedro, Tonetti, Stefania   +6 more
core   +2 more sources