Sentences with phrase «by radar satellites»

Built from images acquired by radar satellites, the visualisation details all the great glaciers and the smaller ice streams that feed them.

Surface rock above a nuclear test will expand enough to be trackable by radar satellites.

Not exact matches

Brussels wants to take the operation step - by - step, starting by collecting intelligence on the traffickers by using radar, satellite pictures and reconnaissance flights and raiding unflagged boats.

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.

The researchers used radar signals bounced off the ground by satellites that measure how long the pulses take to return to space.

Radar observations by the U.S. Air Force and by amateur hobbyists revealed that after each commercial satellite was deployed, an additional small object flew far away from the jettisoned rocket booster, only to later turn around and fly back.

Shirzaei and colleagues took a different approach, using a constellation of satellites — the Interferometric Synthetic Aperture Radar (InSAR) satellites — to detect alterations in Earth's crust driven by underlying pressure fluctuations.

A research team led by Romeiser was the first to accurately measure currents from a space shuttle platform between islands off the Dutch coast and the first to make current measurements using the radar on the TerraSAR - X satellite.

Radar satellites can detect the surface ripples produced by internal waves and the data collected allow researchers to calculate the speed of internal waves traveling below the surface.

Coastal altimetry, which provides detailed wave and sea level data in the coastal zone captured by specialist instruments called radar altimeters on board satellites, is at the heart of the project and scientists from NOC have been at the cutting - edge of this technique.

As Tulaczyk watched the Herc on Jan. 17, 2013, the lake remained a mere silhouette pieced together from noisy geophysical measurements involving radar, lasers shot down from satellites and the seismic echoes of shock waves released by explosives detonated in shallow holes in the ice.

The Biomass radar will still have to be turned off when it is over North America and Europe because it will interfere with systems used by the military to track objects in space, but forests there are relatively well studied; it's the swathes of forest in the tropics, Siberia, and China that will be the new satellite's main concern.

Other research measures announced by Flaherty included $ 72.75 million for a forestry and environmental genomics competition at Genome Canada; $ 63.78 million over 5 years for the Canadian Space Agency's plan to develop the RADARSAT Constellation Mission, which proposes to generate radar images using multiple satellites; and $ 17.46 million over 5 years «to commence the pre-construction design phase» for the proposed Canadian Arctic Research Initiative.

From the Tongan island's beginning, it was tracked by monthly, high - resolution satellite observations, both with optical sensors and radar, which sees through clouds.

Building work will begin in the spring and the radar should be ready by 1995, when the European Space Agency's CLUSTER satellite system is due to be launched.

Interferometric Synthetic Aperture Radar — A proposed satellite - based monitoring system that, if funded, will track the movement and deformation of the North American and Pacific plates by bouncing radar waves off the surfRadar — A proposed satellite - based monitoring system that, if funded, will track the movement and deformation of the North American and Pacific plates by bouncing radar waves off the surfradar waves off the surfaces.

Using data from the GPS stations, an accelerometer that measures ground motion in Kathmandu, data from seismological stations around the world, and radar images collected by orbiting satellites, an international team of scientists led by Caltech has pieced together the first complete account of what physically happened during the Gorkha earthquake — a picture that explains how the large earthquake wound up leaving the majority of low - story buildings unscathed while devastating some treasured taller structures.

Based on field observations, seismic shaking data, GPS measurements, and radar imagery from satellites, Hamling and his colleagues found that surface ruptures in the New Zealand quake were widely separated — in one case by more than 15 kilometers.

Russia has been far more active developing and flying spacecraft powered by small fission reactors, including 30 Radar Ocean Reconnaissance Satellites, or RORSAT, which flew between 1967 and 1988, and higher - powered TOPAZ systems.

«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.

Radar flown by plane and dragged by snowmobile, as well as satellite measurements show how the ice cap is potentially turning into a Slip «N Slide for meltwater to rush to the Atlantic.

The new TL goes a step further by adding weather info - including radar weather maps, forecasts, and alerts - supplied by XM satellite radio.

Satellite radar altimetry, in which timing of a radar or laser beam return back to a satellite is used as a measure of surface elevation, enabled researchers to assess ice mass by examining elevation change over time.

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.

Researchers used data from IceBridge's ice - penetrating radar — the Multichannel Coherent Radar Depth Sounder, or MCoRDS, which is operated by the Center for Remote Sensing of Ice Sheets at the University of Kansas, Lawrence, Kan. — to determine ice thickness and sub-glacial terrain, and images from satellite sources such as Landsat and Terra to calculate veloradar — the Multichannel Coherent Radar Depth Sounder, or MCoRDS, which is operated by the Center for Remote Sensing of Ice Sheets at the University of Kansas, Lawrence, Kan. — to determine ice thickness and sub-glacial terrain, and images from satellite sources such as Landsat and Terra to calculate veloRadar Depth Sounder, or MCoRDS, which is operated by the Center for Remote Sensing of Ice Sheets at the University of Kansas, Lawrence, Kan. — to determine ice thickness and sub-glacial terrain, and images from satellite sources such as Landsat and Terra to calculate velocity.

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.

Satellites track Antarctic ice loss over decades02 May 2017 Over two decades of observations by five radar satellites show the acceleration of ice loss of 30 glaciers in Western Palmer Land in the southwest Antarctic Satellites track Antarctic ice loss over decades02 May 2017 Over two decades of observations by five radar satellites show the acceleration of ice loss of 30 glaciers in Western Palmer Land in the southwest Antarctic satellites show the acceleration of ice loss of 30 glaciers in Western Palmer Land in the southwest Antarctic Peninsula.

The radar imaging system used by Envisat and other satellites is particularly suited to observe polar areas, as it can acquire images through cloud or fog, and night and day.

The team used radar observations captured by the European Earth Remote Sensing (ERS - 1 and -2) satellites to measure just how far the grounding line - the point where the glacier meets the land - had retreated.

The Postdoc will be responsible for preparing long - term lidar and radar measurements for use with a newly developed ground - based lidar - radar simulator for ModelE3, running ModelE3 baseline and sensitivity test simulations, preparing comparisons of aerosol and meteorological conditions with existing reanalysis and satellite data sets, and contributing to model improvement efforts that will be guided by project results.

The aquifer was discovered by analyzing data from a layering satellite, radar, and geological maps in partnership with Unesco.

Some claim that these sums pale by comparison with the aggregate global spending on climate and weather related research, which may be true if you include all the satellite programs, radar, and other ground - based sensing capabilities.

You can also do sampling by having people go out and do direct measurements or even by using aerial photos of satellite imagery or a radar - based sensor.