[NMScience] Singing Icebergs talk at Museum 4/22

[Morris, Tish, DCA]

Rick Aster is a great speaker, and the talk is low cost--this will be a great talk to come to!
--Tish


IRIS/SSA Distinguished Lecture

Roaring Oceans and Singing Icebergs: Taking Earth’s Pulse and Temperature Using Seismology
Rick Aster, Ph.D.
Wednesday, April 22, 2009  7 p.m.

Icebergs sing! Scientists recently have used earthquake monitoring equipment (seismographs) to record hours-long collisions between Earth’s largest icebergs gyrating under the influence of ocean currents and causing the icebergs to “sing” with a newly discovered type of seismic and ocean acoustic tremor. Seismographs are also recording aspects of Earth’s climate. Buried in the background of worldwide seismic recordings are “microseisms” -- seismic waves created by ocean waves pounding the coast and interacting with the sea floor. Extreme storms occurring during the Arctic winter produce waves that propagate to Antarctica and influence iceberg behavior. Dr. Aster and his colleagues have looked at over 35 years of global seismic recordings and have been able to reconstruct a unique record of ocean-storm intensity. Early evidence suggests that the number of violent ocean storms across the planet and their associated ocean waves have been increasing during the past three decades. Join Dr. Aster as he explores unsuspected linkages between climate, oceanography, seismology, and glaciology.

Rick Aster joined the faculty at New Mexico Tech in 1991 and is currently a Professor of Geophysics and Chair of the Department of Earth and Environmental Science. Much of his research uses seismology to learn about earthquakes, volcanoes, and unusual seismic sources, like icequakes and explosions, and to image the structure of the deep Earth. In addition to the work described above, he is currently studying the upper mantle beneath the Rocky Mountains, the activity of Mount Erebus Volcano in Antarctica, and seismic activity in New Mexico.

Sponsored by The Incorporated Research Institutions for Seismology (IRIS), the Seismological Society of America (SSA), and the Geological Society of America’s International Year of Planet Earth Lecture Series

Cost: $2 public/$1 members, seniors, students
Reservations: Chris Sanchez at 505-841-2872 
or email:  programs.NMMNHS at state.nm.us


At the New Mexico Museum of Natural History & Science
1801 Mountain Rd NW, Albuquerque, NM 87104
505-841-2800
Check our website at: www.NMnaturalhistory.org
Questions? Call Tish Morris at 505-841-2882.
You may reserve tickets by contacting Chris Sanchez at 841-2872, chris.sanchez at state.nm.us 



Tish Morris
Senior Education Specialist
New Mexico Museum of Natural History & Science
1801 Mountain Rd NW
Albuquerque, NM 87104
505-841-2882
tish.morris at state.nm.us
www.NMnaturalhistory.org

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