[ghsc-seminars] USGS-GHSC Seminar: Dr. Kristina Kelevitz, Thursday, Nov, 16th, 2pm

[Mirus, Benjamin]

*"**GPS seismology - mapping the Earth's interior with geodetic
measurements"*
​​
*Dr. Krisztina Kelevitz, CIRES Fellow, CU Boulder*

GPS waveforms are capable of recording the waveforms of passing surface
waves whenever the ground displacement exceeds the noise level of the GPS
observations (2-3 mm). In this study, these waveforms are used to invert
for the moment tensor source of the earthquakes under the point source
approximation. Case studies from Japan show that using standard
seismological methods with GPS data it is possible to characterise
earthquake sources. If GPS observations are available in real time, they
have the potential to contribute to rapid solutions of earthquake source
inversions.

Since the GPS waveforms agree well with synthetic seismograms and they are
capable to model the source of the earthquake, by extension they have the
potential to contribute to seismic tomography models. Preliminary results
of a regional seismic tomography model have been computed, that is the
starting point towards including GPS data in the next generation of seismic
tomography models.

*Thursday, November 16th, 2017*
*2-3 pm​  (Mountain Time)*
*USGS, 1711 Illinois Street, Golden, CO*
*First Floor (Entry Level) Seminar Room*

*Note: Please arrive *~10 minutes early* and *bring photo ID* for
security measures
now in place at the USGS building.

Thank you,
GHSC Seminar Committee

Mirus, Ben - bbmirus at usgs.gov
Josh Rigler - erigler at usgs.gov
Oliver Boyd - oboyd at usgs.gov
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