BEGIN:VCALENDAR
VERSION:2.0
PRODID:icalendar-ruby
CALSCALE:GREGORIAN
X-WR-CALNAME:FISH Seminar: Brent Delbridge (Harvard)
X-WR-TIMEZONE:Eastern Time (US & Canada)
BEGIN:VEVENT
DTSTAMP:20261017T215535Z
UID:tag:localist.com\,2008:EventInstance_3352143
DTSTART:20180223T170000Z
DTEND:20180223T180000Z
DESCRIPTION:Geodetic and Seismological Constraints on Quasi-episodic Slow S
 lip on the San Andreas Fault\n\nIt is thought that large bursts of deep tr
 emor (> 20 km depth) near Parkfield\, CA are associated with quasi-periodi
 c shear dislocations on the deep extent of the San Andreas Fault. Slow sli
 p has been discovered in subduction zones worldwide and manifests aseismic
 ally as geodetic transients in GPS and seismically as a long duration\, lo
 w amplitude seismic signal known as tectonic tremor. However\, deformation
  associated with tremor in a transform fault environment has not previousl
 y been observed despite the ubiquitous presence of tremors and low frequen
 cy earthquakes (LFEs) and targeted attempts to observe this deformation. T
 he strain rates associated with these events are below the detection level
  of GPS networks. Thus\, in order to observe this deformation we have util
 ized two long-baseline laser strainmeter located in Cholame\, CA and the P
 BO borehole strainmeter network to place a lower upper bound on their mome
 nt release. In order to overcome a small signal-to noise-ratio in the stra
 inmeter data\, we have stacked the strain records associated with more tha
 n 80 large tremor-burst events\, each approximately 10 days in duration. W
 e also explore the deformation associated with a large increase in tremor 
 activity following the August 24\, 2014 M6.0 Napa earthquake\, the largest
  observed burst in the Parkfield-Cholame area since the large tremor rate 
 increase associated with the 2004 Parkfield M6 earthquake. We suggest that
  the tectonic tremor and LFEs likely reflect distinct faulting behaviors.\
 n\nAbout the Series\n\nThe Friday Informal Seminar Hour [FISH\, Earth Reso
 urces Laboratory] is a postdoc-run weekly seminar series within the ERL. T
 opics include research relating to geophysics\, and in particular seismolo
 gy\, with applications in Earth resources exploration such as e.g. seismic
 s exploration\, microseismicity\, earthquake physics\, and Earth imaging t
 echniques. The seminars usually take place on Fridays at 12 noon in 54-209
  (term-time only).
GEO:42.360158;-71.089183
LOCATION:Building 54\, 209
SUMMARY:FISH Seminar: Brent Delbridge (Harvard)
URL;VALUE=URI:https://calendar.mit.edu/event/fish-seminar-brent-delbridge-h
 arvard
CATEGORIES:Conferences/Seminars/Lectures
END:VEVENT
END:VCALENDAR