Results 111 to 120 of about 14,771 (237)

Altimetry from Planetary Radar Sounders

open access: yes, 2020
Having information on the global shape of a planet as well as having precise topography information is a prerequisite for many advanced scientific studies as well as for future robotic exploration. To date there are numerous methods to obtain topographic
Scanlan, Kirk Michael   +8 more
core  

Satellite altimetry

open access: yes, 1992
Since altimetry data are not really old enough to use the term data archaeology, Mr. Cheney referred to the stewardship of these data. He noted that it is very important to document the basis for an altimetry data set as the algorithms and corrections ...
Cheney, Robert E.
core  

Inland Water Level Monitoring from Satellite Observations: A Scoping Review of Current Advances and Future Opportunities

open access: yesRemote Sensing
Inland water level and its dynamics are key components in the global water cycle and land surface hydrology, significantly influencing climate variability and water resource management.
Stylianos Kossieris   +3 more
doaj   +1 more source

Evolution of Altimetry Calibration and Future Challenges

open access: yes, 2012
Over the past 20 years, altimetry calibration has evolved from an engineering-oriented exercise to a multidisciplinary endeavor driving the state of the art.
Haines, Bruce J., Fu, Lee-Lueng
core  

Nanosats for Radar Altimetry

open access: yes, 2015
Radar altimeters such as TOPEX/Poseidon and Jason-2 measure the sea surface height as well as wave height and wind speed, providing key information about the ocean. The U.S.
Mroczek, Austin, Jacobs, Gregg
core  

Distinctive Patterns of Water Level Change in Swedish Lakes Driven by Climate and Human Regulation

open access: yesWater Resources Research
Despite having approximately 100,000 lakes, Sweden has limited continuous gauged lake water level data. Although satellite radar altimetry (RA) has emerged as a popular alternative to measure water levels in inland water bodies, it has not yet been used ...
S. Aminjafari   +6 more
doaj   +1 more source

Monitoring of water level of Lake Sarygamysh based on Earth remote sensing data

open access: yesВодное хозяйство России: проблемы, технологии, управление
Lakes and the hydrological processes occurring within them are important indicators of global environmental and climatic transformations. Changes in lake water level and volume are closely linked not only to natural factors (precipitation, evaporation ...
Salauat B. Kalabaev
doaj   +1 more source

Niger discharge from radar altimetry: bridging gaps between gauge and altimetry time series

open access: yes, 2019
The Niger River represents a challenging target for deriving discharge from spaceborne radar altimeter measurements, particularly since most terrestrial gauges ceased to provide data during the 2000s. Here, we propose deriving altimetric rating curves by
Diekkrüger, Bernd   +6 more
core   +1 more source

A Special Collection on Hydrogeodesy in a New Era of Satellites for Better Understanding and Management of Water Resources

open access: yesWater Resources Research
Hydrogeodesy is the discipline that measures the Earth's solid and aquatic surfaces and gravity field from space to study water resources and their changes over time. The Special Collections on Hydrogeodesy: Understanding Changes in Water Resources Using
Fernando Jaramillo   +5 more
doaj   +1 more source

Ku‐ and Ka‐Band Polarimetric Radar Waveforms and Snow Depth Estimation Over Multi‐Year Antarctic Sea Ice in the Weddell Sea

open access: yesGeophysical Research Letters
Antarctic sea ice has seen recent rapid declines in extent, but it remains unclear whether this is accompanied by thinning. Due to the relative abundance and complexity of overlying snow on sea ice, radar altimetry methods routinely deployed for sea ice ...
Rosemary Willatt   +5 more
doaj   +1 more source

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