Sentences with phrase «of radar satellites»

Rather, the magma chambers are being found now because the sharp vision of radar satellites has improved scientists» view of ground movements.

Not exact matches

Ted Toth, vice-president of a factory in Pennsauken, New Jersey, that makes parts for satellite, radar and GPS systems, says he has four available jobs that pay from $ 20 to $ 32 an hour.

Prime Minister Najib Razak acknowledged Saturday that military radar and satellite data raised the possibility that the plane could have ended up somewhere in Indonesia, the southern Indian Ocean or along a vast arc of territory from northern Laos across western China to Central Asia.

Much of the engaging read traces the evolution of military technology, from radar to GPS and spy satellites, weaving in tales of the mapmakers, inventors and scientists behind the discoveries.

The European Space Agency's Mars Express satellite has used ground - penetrating radar in some areas to look for a water table but found no evidence for one, despite research that concluded any water would be found within 9 kilometres of the surface — well within the reach of the probe's instruments.

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.

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 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.

In an area of some nine square kilometres for which radar satellite data is available, they collected laser scanning data from more than 40 plots, and integrated this data into a model for calculating the biomass.

A hidden riverbed has been spotted under the sand of the vast Sahara desert using radar satellite imagery.

If visual data from satellites is combined with information from radar and LiDAR, (light detecting and ranging, which provides laser - measured data about 3 - D contours), Xiao explains, researchers can really hone prediction of some diseases down to a tree line.

Employing gravimeters, laser altimeters, even radar, the plane will attempt to get a handle on the rapid thinning of the Antarctic ice sheet — as well as fill in for the aging ICESat 1 satellite that is soon to be defunct.

Moreover, the partnership with China will likely continue, and the two nations are considering the development of a new family of satellites using radar instead of optical instruments, enabling the observation of forests even through clouds.

«These scientists combined citizen science observations with data from radar, satellites and weather predictions to understand the cues birds use in their migrations across continents,» said Liz Blood, program director in the National Science Foundation's Division of Environmental Biology, which funded the research through NSF's MacroSystems Biology Program.

In the early 1990s the TOPEX (Topography Experiment for Ocean Circulation) / Poseidon satellite, a joint American - French mission, shot into orbit armed with radar altimeters to measure the height of the sea surface.

One ambitious Air Force project involves a constellation of space - based radar satellites that would surround the planet, providing full coverage with the kind of granular detail thus far available only through aircraft or vehicles on the ground.

The team monitored the earlier development of the rift using a technique called satellite radar interferometry (SRI) applied to ESA Sentinel - 1 images.

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.

While satellites have provided consistently good data for years, the next frontier in sea level rise measurement is a new type of radar that can capture a more crisp, higher - resolution picture of sea surface heights.

The InSAR satellites use radar to illuminate large areas of the Earth's surface, measuring how the distance between the satellite structure and the ground surface changes over time.

Currently, weather radar on satellites can image the tops of clouds, but not the internal structure.

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.

Using satellite radar data, Tim Wright, a geophysicist at the University of Leeds in England, has pieced together exactly how the gap got started.

And instead of hitching planes to an umbilical cord of radar - based navigation aids, the satellite system will open routes around the globe, enabling planes to take more direct paths.

Vostok is the best - known subglacial lake and probably the largest that will ever be found, but there are plenty of others, and satellite and radar surveys keep turning up more.

A fraction of the cost of normal radar satellites, NovaSAR could be launched in 2013 with further investment.

Accurate tracking of lightning and thunderstorms over the oceans, too distant for land - based radar and sometimes difficult to see with satellites, will support safe navigation for aviators and mariners.

Scientists also face shortfalls in other satellite functions that they need for monitoring the Antarctic ice: high - frequency radar for measuring the speed of glaciers and low - frequency radar for measuring ice thickness.

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.

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.

Lapenta foresees a day in the next decade when the increasing capabilities of new radars and satellites will be coupled with an evolving generation of finely detailed weather - prediction models running in real time on computers at speeds exceeding a quintillion computations a second.

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.

Pettersson's picture is actually a patchwork of satellite photos and radar images that he has assembled.

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.

Over the past two decades my company has used imaging radar satellites to map oil on the sea surface for 70 million square kilometres of ocean.

«This isn't a surveillance system that monitors vessel movements across the oceans in real time, like radar tracking of aircraft in the sky; instead we have proposed a system which records images every time a satellite passes over specific points of the sea.

Both satellite and radar will investigate the phenomena that cause the aurora borealis, but from different ends of the magnetic field lines that lead from space to the Earth's poles.

The world has changed radically since the era of the Hindenburg; today's satellite weather forecasts, GPS - tracking, radar, computer - controlled avionics and in - flight management systems have paved the way for this new wave of hybrid airships.

The UC Berkeley team used 19 years of satellite data to map ground deformation using interferometric synthetic aperture radar (InSAR) and measure creep along the southern end of the Hayward Fault, and found, surprisingly, that the creep didn't stop south of Fremont, the presumed southern end of the fault, but continued as far as the Calaveras Fault.

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.

But Avouac, Ampuero, and their colleagues used satellite Synthetic Aperture Radar data and a technique called back projection that takes advantage of the dense arrays of seismic stations in the United States, Europe, and Australia to track the progression of the earthquake, and found that it was quite contained at depth.

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.

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.

Aerospace and aircraft companies as well as the military have been challenged to find ways of effectively shielding sensitive electronic equipment such as radar and radios from electromagnetic interference (EMI) without adding a lot of weight to aircraft and satellites (the more massive they are, the more fuel they need to stay in the air or achieve orbit, respectively).

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.

Radar, satellite and some military systems use this area of the spectrum currently but it's definitely less occupied than the spectrum currently in use.

From satellite observations such as radar interferometry, Rignot and his colleagues conclude a common cause underlies the retreat of West Antarctica's largest glaciers, including Pine Island Glacier, known for cleaving massive icebergs, and its neighbor, Thwaites Glacier.

«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.

Finnish Meteorological Institute makes observations of the atmosphere, sea and space at over 400 stations around Finland, and using remote sensing instruments such as radars and satellites.

PNNL researchers use a host of cutting - edge tools — including weather radars, research aircraft, computer models and satellite measurements — to explore these complex interactions.