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NASA Developing Natural Hazard Warning Systems

By Guest PostDecember 17, 2013Environmentaccurate measurements, angelyn moore, california, data products, earthquakes, gps network, gps stations, gps technologies, harmful flash flooding, highway 78, mark jackson, NASA, natural hazard, noaa, permanent motions, san diego, san diego county, tsunami warnings, tsunamis, warning systems, yehuda bock

Scientists at NASA’s Jet Propulsion Laboratory, Pasadena, Calif., and Scripps Institution of Oceanography at UC San Diego have enhanced existing GPS technologies to develop new systems for California and elsewhere to warn of hazards from earthquakes, tsunamis and extreme weather events.

The technology was demonstrated in July by forecasters at NOAA National Weather Service offices in Oxnard, Calif., and San Diego. They used it to track a summer monsoon rain event affecting Southern California and issue more accurate and timely flash flood warnings. The system uses real-time information from GPS stations upgraded with small, inexpensive seismic and meteorological sensors. (more…)

Seeing Stars, Finding Nukes: Radio Telescopes Can Spot Clandestine Nuclear Tests

By Guest PostDecember 11, 2012Environment, Scienceagu, american geophysical union, amplitudes, astronomical radio telescopes, atmosphere, China, distant galaxy, dorota grejner brzezinska, earth, global community, gnss, gps stations, gps systems, hunters trophy, ionosphere, Japan, jihye park, joseph helmboldt, kilotons, nevada, nevada test site, new mexico, north korea, north korean bomb, north korean explosion, north korean test, nuclear test, ohio state university, radio astronomer, radio telescopes, ralph von frese, rogue nukes, russia, socorro, south Korean, telltale atmospheric disturbances, thomas wilson, underground nuclear explosions, university of nottingham, very large array, vla, yu jade morton

SAN FRANCISCO — In the search for rogue nukes, researchers have discovered an unlikely tool: astronomical radio telescopes.

Ohio State University researchers previously demonstrated another unlikely tool, when they showed that South Korean GPS stations detected telltale atmospheric disturbances from North Korea’s 2009 nuclear test.

Both techniques were born out of the discovery that underground nuclear explosions leave their mark—on the outer reaches of Earth’s atmosphere. (more…)

2010 Spike in Greenland Ice Loss Lifted Bedrock, GPS Reveals

By Guest PostDecember 10, 2011Environmentamerican geophysical union, bedrock, climate change, dana john caccamise, eric c kendrick, german aerospace center, gnet, gps stations, grace, gravity recovery and climate experiment, greenland coast, greenland gps network, greenland ice sheet, hao zhou, ice, ice sheet, implications, island, jason e box, jian wang, k brown, melting season, michael bevis, NASA, natural response, ohio state university, san francisco, satellites, southern greenland, temperature, terry j wilson

SAN FRANCISCO – An unusually hot melting season in 2010 accelerated ice loss in southern Greenland by 100 billion tons – and large portions of the island’s bedrock rose an additional quarter of an inch in response.

That’s the finding from a network of nearly 50 GPS stations planted along the Greenland coast to measure the bedrock’s natural response to the ever-diminishing weight of ice above it.

Every year as the Greenland Ice Sheet melts, the rocky coast rises, explained Michael Bevis, Ohio Eminent Scholar in Geodynamics and professor in the School of Earth Sciences at Ohio State University. Some GPS stations around Greenland routinely detect uplift of 15 mm (0.59 inches) or more, year after year. But a temperature spike in 2010 lifted the bedrock a detectably higher amount over a short five-month period – as high as 20 mm (0.79 inches) in some locations. (more…)

Tag Archives: gps stations

NASA Developing Natural Hazard Warning Systems

Seeing Stars, Finding Nukes: Radio Telescopes Can Spot Clandestine Nuclear Tests

2010 Spike in Greenland Ice Loss Lifted Bedrock, GPS Reveals