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2013-04-10T00:00:00.000Z

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Wrong Brad Aagaard?

Dr. Brad Aagaard

HQ Phone: (703) 648-4000

Email: b***@***.gov

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U.S. Geological Survey

12201 Sunrise Valley Drive

Reston, Virginia 20192

United States

Company Description

The USGS lunar calibration program provides radiometric calibration and sensor stability monitoring for space-based remote sensing instruments using the Moon as a reference source. This is a unique on-orbit calibration technique for solar reflectance wave ... more

Find other employees at this company (7,086)

Background Information

Affiliations

Chair of Science Steering Committee
Computational Infrastructure for Geodynamics

Members
Science Steering Committee

Chair of Science Steering Committee
National Science Foundation

Web References (77 Total References)


As of Sunday afternoon, the Bay ...

www.techwire.net [cached]

As of Sunday afternoon, the Bay Area's larger and more volatile faults remained quiet, said Brad Aagaard, a geophysicist with the U.S. Geological Survey.

"As time goes on, the chances of a large earthquake happening as a result of this one decrease," Aagaard said of the South Napa quake.
Aagaard said Sunday it could be days before scientists are able to pinpoint the fault where the Napa quake occurred at 3:20 a.m., about 6.6 miles below the earth's surface. It happened near - and possibly within - the West Napa fault system, he said, but slightly to the south, in an area that is not well-mapped. On Aug. 5, the USGS recorded a magnitude-3.0 quake within 10 kilometers, he said.


Tuesday's quakes were among 80 ...

www.marinij.com [cached]

Tuesday's quakes were among 80 aftershocks, including four stronger than 3.0, since the Sunday morning temblor, said Brad Aagaard, a geophysicist with U.S. Geological Survey.


Brad Aagaard, a seismologist ...

www.dailyrepublic.com [cached]

Brad Aagaard, a seismologist at the U.S. Geological Survey in Menlo Park, said there was a small seismic "event" recorded on Aug. 5 near the area of Sunday's quake. But it wasn't any kind of sign. "In the past three weeks, there's been no indication in that immediate area that this was going to happen," Aagaard said.

...
According to Aagaard, scientists will be looking for cracks at the surface.
...
A magnitude-7 quake would have three times that length, Aagaard said.
Q: How long can we expect aftershocks and how strong will they be?
A: There have already been more than 50 aftershocks since Sunday's earthquake. All have been greater than magnitude 1, with the largest - so far - at 3.6 at 5:45 a.m. Sunday. "We expect they will occur less frequently but they won't necessarily be smaller," Aagaard said. There is a 50 percent chance of a magnitude-5 aftershock happening in the next week, he said.


Brad Aagaard , a ...

www.pearlcitybank.com [cached]

Brad Aagaard , a seismologist at the U.S. Geological Survey in Menlo Park , said there was a small seismic "event" recorded on Aug. 5 near the area of Sunday's quake. But it wasn't any kind of sign. "In the past three weeks, there's been no indication in that immediate area that this was going to happen," Aagaard said.

...
According to Aagaard, scientists will be looking for cracks at the surface.
...
A magnitude-7 quake would have three times that length, Aagaard said.
Q: How long can we expect aftershocks and how strong will they be?
A: There have already been more than 50 aftershocks since Sunday's earthquake. All have been greater than magnitude 1, with the largest ? so far ? at 3.6 at 5:45 a.m. Sunday . "We expect they will occur less frequently but they won't necessarily be smaller," Aagaard said. There is a 50 percent chance of a magnitude-5 aftershock happening in the next week, he said.


As of early Sunday afternoon, the ...

www.ukiahdailyjournal.com [cached]

As of early Sunday afternoon, the Bay Area's larger and more volatile Hayward Fault remained quiet, which is "a good sign," said Brad Aagaard, a geophysicist with the U.S. Geological Survey.

"As time goes on, the chances of a large earthquake happening as a result of this one decrease," Aagaard said.
Aagaard said scientists were still pinpointing the fault where the quake occurred at 3:20 a.m., about 6.6 miles below the earth's surface. It happened near -- and possibly within -- the West Napa fault system, he said, but slightly to the south, in an area that is not yet well-mapped.
On Aug. 5, the USGS recorded a magnitude-3 quake in the vicinity -- within 10 kilometers, he said.
...
The system is not fully operational or available to the public, but this was its biggest test yet in the Bay Area, Aagaard said.
Ten seconds might not seem like a long time, but it can give BART trains and drivers a chance to slow down, he said, and people a moment to duck under their desks if they're at work.

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