"Clustering of earthquakes in the southern San Andreas Fault System based on 1100 years of paleo-earthquakes: Is the 200 year open interval for large earthquakes unusual?" byThomas Rockwell (San Diego State University)
(a) Seismic vertical component velocity and (b) infrasonic pressure recordings of the 8 March 2005 phreatic (steam-driven) explosion of Mount St. Helens, Washington, USA. The broadband seismometer was collocated with the central element of a 4-element infrasound array CDWR in a quiet forest site ~13.4 km from the source. In each case, we show data from +/-1 day spanning the event at 9 March 2005 ~01:26:17 UTC (day 68). The seismic tremor accompanying the phreatic explosion has a similar amplitude to seismicity before and after. A large unambiguous infrasound signal delineates the explosive eruption.
"Molecular Paleobiology and exceptional preservation - A paleontologists contribution to macroevolutionary studies" by Jakob Vintner (University of Bristol, UK)
NOTE: the colloquium talks are now at 12pm. Please plan to come by Haller Hall at 11:45am to help yourself with lunch.
Scott Doney from WHOI will present at the first Fall colloquium series on Sept 19th, and his talk is entitled: "Coastal Water Quality, Climate Change & Ocean Acidification along the U. S. Northeast"
