Sentences with phrase «satellite radar»
Satellite radar refers to a technology that uses satellites to send out signals or waves to measure and detect objects on Earth's surface. By bouncing these signals off the ground and receiving the reflected signals, it helps create detailed images and maps of various aspects like landscapes, weather, and even moving vehicles. Full definition
Scientists use satellite radar data to analyse changes and movements of sea ice.
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Here, satellite radar observations are used to produce a composite picture of the life cycle of convection in these two regions.
In the real world, volcanoes are much more messy and complicated, and the method would need to employ genuine GPS and satellite radar data.
Larour, E., Rignot, E., Joughin, I. & Aubry, D.,» Rheology of the Ronne Ice Shelf, Antarctica, inferred from satellite radar interferometry data using an inverse control method», Geophysical Research Letters, 32, 2005.
The combination satellite radar images below clearly reveal extreme and completely unnatural weather anomalies over the continental US.
To get the biggest picture now available, Paolo and his colleagues stitched together satellite radar altimetry data from three consecutive and overlapping missions: the European Space Agency's (ESA's) ERS - 1 and ERS - 2 (which flew from 1991 to 2000 and 1995 to 2011, respectively), and ESA's ENVISAT mission, which collected data from 2002 to 2012.
Co-author Fielding used satellite radar imagery to create a map of the terrain that dropped during the earthquake and where land surface had risen.
They used 15 years of satellite radar data from the European Earth Remote Sensing - 1 and -2, Canada's Radarsat - 1 and Japan's Advanced Land Observing satellites to reveal the pattern of ice sheet motion toward the sea.
The team monitored the earlier development of the rift using a technique called satellite radar interferometry (SRI) applied to ESA Sentinel - 1 images.
Using ESA's Sentinel - 1 satellite radar mission — which comprises a constellation of two polar - orbiting satellites, operating day and night in all - weather conditions — the research team were able to capture before and after images of the landslides.
NCAR's Forecast Icing Product — Severity (FIP - S) software analyses satellite radar images to detect the atmospheric conditions that lead to icing.
Published in their final form last week in the journal Geophysical Research Letters, the maps draw on a variety of data sources, including satellite radar and aerial imagery, as well as special sonar data collected on ship expeditions to the front of the ice sheet.
Now only visible with satellite radar (see an image), the channels flowed intermittently from present - day Libya and Chad to the Mediterranean Sea, says Anne Osborne, a geochemist at the University of Bristol, UK, who led the new study.
· Raphaël Grandin and colleagues at the Institut de Physique du Globe de Paris combined satellite radar data (InSAR) and broadband seismic data to determine that the main Pawnee seismic rupture occurred between 4 and 9 kilometers depth, well below the main sediment layer where wastewater is injected.
Rignot, E., Mouginot, J. & Scheuchl, B. Antarctic grounding line mapping from differential satellite radar interferometry.
Whether the storm was over land, ocean or coastal areas, clouds with more ice produced more lightning, researchers studying satellite radar images report in the journal Geophysical Research Letters.
A study using Earth Remote Sensing satellite radar interferometry (EERS - 1 and -2) observations from 1992 through 2011 finds «a continuous and rapid retreat of the grounding lines of Pine Island, Thwaites, Haynes, Smith, and Kohler» Glaciers, and the authors conclude that «this sector of West Antarctica is undergoing a marine ice sheet instability that will significantly contribute to sea level rise in decades to centuries to come» (Rignot et al. 2014).
In the combination satellite radar map below (Nov 17, 2015), nearly the entire North American continent is covered with canopy.
The slope in sea level across the Gulf Stream has been measured by satellite radar altimeter to be one metre over a horizontal distance of 100 km (62 miles), which is sufficient to cause a surface geostrophic current of one metre per second at 43 ° N.
But other satellite radar imagery has begun to reveal an ominous picture of change elsewhere in the Arctic, on the north slope of Alaska.
In the United Kingdom, Seymour Laxon of University College London used satellite radar to study roughly half the permanent ice cover in the Arctic and found that it has thinned by 12 inches over the last eight years.
These missions - satellite radar altimetry projects overseen by the European Space Agency (ESA)- lasted from 1994 to 2012, providing the researchers plenty of data that could even be overlapped and compared to ensure an accurate assessment of ice shelf thickness for more than a decade.
Sentinel - 1 satellite radar image of the northern Gulf of Mexico, taken about 7:30 pm local time on February 14, 2017.
However, we can combine detailed knowledge of tidal dynamics, and observations of ice shelf surface height from satellite radar and laser altimeters, to use these data to improve models.
Using satellite radar data, Tim Wright, a geophysicist at the University of Leeds in England, has pieced together exactly how the gap got started.
It is derived from ALOS PALSAR, Envisat ASAR, Radarsat - 2, ERS - 1 and ERS - 2 satellite radar interferometry overlaid on a MODIS mosaic of Antarctica.
Using satellite radar and helicopter observations, scientists at Laval University in Quebec and the University of Alaska at Fairbanks discovered that the more - than -150-square-mile Ward Hunt Ice Shelf on the north coast of Canada's Nunavut territory has split in half.
«The laser scanning data collected from selected points does give significantly more precise results than the satellite radar,» notes Christian Berger, co-author of the study and head of the research project on which Victor Odipo's doctoral thesis is based.
Dr Biggs said: «The findings suggest that satellite radar is the perfect tool to identify volcanic unrest on a regional or global scale and target ground - based monitoring.»
Using the satellite radar data, we were able to efficiently detect and map the active landslide over a wide region, identifying the source of the landslide and also its boundaries.
«We're the first to have developed a strategy using data assimilation to successfully forecast the evolution of magma overpressures beneath a volcano using combined ground deformation datasets measured by Global Navigation Satellite System (more commonly known as GPS) and satellite radar data,» explains Mary Grace Bato, lead author of the study and a researcher at the Institut des Sciences de la Terre (ISTerre) in France.
One of them is that we use satellite radars to look at how fast the ice on the land, like in Greenland and the Alaskan glaciers, is flowing into the ocean.
Sentinel - 1 satellite radar image courtesy European Space Agency.
In August 2011, the first map of ice velocity over the entire continent of Antarctica was created derived from, Envisat ASAR, ALOS PALSAR, Radarsat - 2, ERS - 1 and ERS - 2 satellite radar interferometry overlaid on a MODIS mosaic of Antarctica.