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Highlights

2008 UNAVCO Science Workshop a Success!

2008 UNAVCO Science Workshop a Success!

March 21, 2008

The workshop drew 190 attendees, representative of UNAVCO's membership and sponsor base. Four science sessions focused on Polar Studies and Glacier Dynamics, Geodetic Monitoring of Natural Hazards, Seismic-Cycle Geodesy, and Magmatic Systems. Special Interest Groups met throughout the meeting to explore various strategic and technical topics. Other meeting highlights include Susan Eriksson’s workshop on Teaching Geophysics at the College Level, Caroline Porco showing recent Cassini mission images in her presentation "Traveling Saturn", a poster session, and a Front Range Geology field trip.
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Magnitude 6.0 Earthquake hits Nevada

GPS and InSAR Study of the 2005 Eruption of Sierra Negra Volcano, Galápagos, Ecuador

April 16, 2008

A team of scientists studied the 2005 eruption of Sierra Negra volcano in the Galápagos Archipelago using GPS and InSAR data and petrologic and geochemical analyses. D. Geist (Univ. Idaho), K. Harpp, and T. Naumann were in the field during the eruption, while W. Chadwick collaborated remotely. Their results were recently published in the Bulletin of Volcanology (Geist et al., 2008). Installation, operation and maintenance of the GPS network were handled by UNAVCO. Sierra Negra began erupting on 22 Oct. 2005, after a repose of 26 years. GPS and InSAR data show that the caldera floor deflated ~5 m, and the volcano contracted horizontally ~6 m.
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PBO Siting Outreach Talk at UCSD Imperial Valley Campus

PBO Siting Outreach Talk at San Diego State University in Brawley, California

April 2, 2008

On February 21, 2008 PBOs Siting Outreach Specialist Jayme Margolin gave a talk at the SDSU Brawley Campus entiled EarthScope: Revealing the Earths Secrets. The talk focused on uses of the Global Positioning System, in particular EarthScope infrastructure located in southern California, to better understand the earthquake cycle and plate tectonics. The talk was timely coming just days after a swarm of earthquakes occurred (including a M5.3) in the Cerro Prieto geothermal field just south of the US-Mexico border.
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Terrestrial Laser Scanning in the Dry Valleys of Antarctica

Terrestrial Laser Scanning in the Dry Valleys of Antarctica

February 11, 2008

Bruce Marsh, the Principal Investigator of Johns Hopkins University, and Bjorn Johns, a UNAVCO Project Manager, are scanning a beautifully exposed magmatic mush column (MMC) in the Dry Valleys of Southern Victoria Land. This MMC has been called a Rosetta Stone, because Marsh believes it provides some of the long sought connections between lava erupted at the surface of the earth and plutons at depth. The TLS scanner is particularily useful for this application because as it digitizes, it allows for the accurate quantification of such landforms.
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Plate Tectonics in the East African Rift

Plate Tectonics in the East African Rift

April 11, 2008

D. Sarah Stamps, a first-year graduate student at Purdue University, is the lead-author on a paper presenting "A kinematic model for the East African Rift" published recently in 'Geophysical Research Letters' (Stamps et al., 2008) and highlighted by the American Geophysical Union. It is based on a kinematic model she developed as an undergraduate student at the University of Memphis, Center for Earthquake Research and Information, with Eric Calais of Purdue University and five other collaborators from institutions in Tanzania, France, Portugal, and the US. Sarah has participated in several UNAVCO-supported GPS survey campaigns in East Africa since 2006.
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Modified: Friday May 02, 2008