<div dir="ltr"><div class="gmail_extra"><div class="gmail_quote"><b style="font-size:12.8px;text-align:-webkit-auto"><font color="#ff0000">"</font></b><span style="text-align:-webkit-auto"><font color="#ff0000"><b><span style="font-size:12.8px">GPS seismology - mapping the Earth's interior with geodetic measurements"</span></b></font></span><br><span style="font-family:georgia,serif"></span><br><b style="font-size:12.8px"><div style="font-size:small;display:inline"><font face="arial, helvetica, sans-serif"><div class="gmail_quote">Dr. Krisztina Kelevitz,<b style="font-family:arial,sans-serif;font-size:12.8px"><div style="font-size:small;display:inline"><font face="arial, helvetica, sans-serif"><div class="gmail_quote" style="display:inline"> CIRES Fellow, CU Boulder</div></font></div></b></div></font></div></b></div><div class="gmail_quote"><font face="arial, helvetica, sans-serif"><span style="font-size:12.8px"><b><br></b></span></font><div class="gmail_quote">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.</div><div class="gmail_quote"><br></div><div class="gmail_quote">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.</div><span style="font-size:12.8px"><br></span><b style="text-align:-webkit-auto;font-size:12.8px"><div style="font-size:small;display:inline"><font face="arial, helvetica, sans-serif">Thursday, November 16th</font></div><font face="arial, helvetica, sans-serif">, 2017</font></b><br><b style="text-align:-webkit-auto;font-size:12.8px"><span style="font-size:13px"><font face="arial, helvetica, sans-serif"><div style="font-size:small;display:inline"><div style="display:inline"><div style="display:inline">2-3 pm</div> </div></div> (Mountain Time)</font></span></b><br><b style="text-align:-webkit-auto;font-size:12.8px;font-family:arial,helvetica,sans-serif"><span style="font-size:13px">USGS, 1711 Illinois Street, Golden, CO</span></b><br><b style="text-align:-webkit-auto;font-size:12.8px;font-family:arial,helvetica,sans-serif"><span style="font-size:13px">First Floor (Entry Level) <span class="m_2261340191774375389gmail-m_3025069362589959092gmail-m_-8968070735390492279m_4896026561608388806gmail-m_3918809983636524111m_7068817575649352729m_-6172873775242136948gmail-m_-4303968599703518853gmail-m_2043882230405221244gmail-m_2480559937188047531m_-1887565490609744462m_8131614935401267798m_6252585815979993878gmail-m_-5616756539997506461gmail-m_3957397034944864967gmail-m_-5590660146057455466gmail-m_2010942344340859242gmail-m_4771098111974711889gmail-m_337406015407620904gmail-m_-5330926199930091226m_647861723187015620gmail-il"><span class="m_2261340191774375389gmail-m_3025069362589959092gmail-m_-8968070735390492279m_4896026561608388806gmail-m_3918809983636524111m_7068817575649352729m_-6172873775242136948gmail-m_-4303968599703518853gmail-m_2043882230405221244gmail-m_2480559937188047531m_-1887565490609744462m_8131614935401267798m_6252585815979993878gmail-m_-5616756539997506461gmail-m_3957397034944864967gmail-m_-5590660146057455466gmail-m_2010942344340859242gmail-m_4771098111974711889gmail-il">Seminar</span></span> Room</span></b><br><span style="font-size:12.8px"><br></span><span style="text-align:-webkit-auto;font-size:12.8px;font-family:arial,helvetica,sans-serif">*Note: Please arrive <u>~10 minutes early</u> and <u>bring photo ID</u> for </span><span style="text-align:-webkit-auto;font-size:12.8px;font-family:arial,helvetica,sans-serif">security</span><span style="text-align:-webkit-auto;font-size:12.8px;font-family:arial,helvetica,sans-serif"> measures now in place at the USGS building.</span><br><span style="font-size:12.8px"><br></span><span style="font-size:13px;text-align:-webkit-auto">Thank you,</span><br><span style="font-size:13px;text-align:-webkit-auto"><span class="m_2261340191774375389gmail-m_3025069362589959092gmail-m_-8968070735390492279m_4896026561608388806gmail-m_3918809983636524111m_7068817575649352729m_-6172873775242136948gmail-m_-4303968599703518853gmail-m_2043882230405221244gmail-m_2480559937188047531m_-1887565490609744462m_8131614935401267798m_6252585815979993878gmail-m_-5616756539997506461gmail-m_3957397034944864967gmail-m_-5590660146057455466gmail-m_2010942344340859242gmail-m_4771098111974711889gmail-il"><span class="m_2261340191774375389gmail-m_3025069362589959092gmail-m_-8968070735390492279m_4896026561608388806gmail-m_3918809983636524111m_7068817575649352729m_-6172873775242136948gmail-m_-4303968599703518853gmail-m_2043882230405221244gmail-m_2480559937188047531m_-1887565490609744462m_8131614935401267798m_6252585815979993878gmail-m_-5616756539997506461gmail-m_3957397034944864967gmail-il"><span class="m_2261340191774375389gmail-m_3025069362589959092gmail-m_-8968070735390492279m_4896026561608388806gmail-m_3918809983636524111m_7068817575649352729m_-6172873775242136948gmail-m_-4303968599703518853gmail-m_2043882230405221244gmail-m_2480559937188047531m_-1887565490609744462m_8131614935401267798m_6252585815979993878gmail-m_-5616756539997506461gmail-il">GHSC</span></span></span><font face="arial, sans-serif"> </font><span class="m_2261340191774375389gmail-m_3025069362589959092gmail-m_-8968070735390492279m_4896026561608388806gmail-m_3918809983636524111m_7068817575649352729m_-6172873775242136948gmail-m_-4303968599703518853gmail-m_2043882230405221244gmail-m_2480559937188047531m_-1887565490609744462m_8131614935401267798m_6252585815979993878gmail-m_-5616756539997506461gmail-m_3957397034944864967gmail-m_-5590660146057455466gmail-m_2010942344340859242gmail-m_4771098111974711889gmail-m_337406015407620904gmail-m_-5330926199930091226m_647861723187015620gmail-il"><span class="m_2261340191774375389gmail-m_3025069362589959092gmail-m_-8968070735390492279m_4896026561608388806gmail-m_3918809983636524111m_7068817575649352729m_-6172873775242136948gmail-m_-4303968599703518853gmail-m_2043882230405221244gmail-m_2480559937188047531m_-1887565490609744462m_8131614935401267798m_6252585815979993878gmail-m_-5616756539997506461gmail-m_3957397034944864967gmail-m_-5590660146057455466gmail-m_2010942344340859242gmail-m_4771098111974711889gmail-il">Seminar</span></span></span><font face="arial, sans-serif" style="font-size:13px;text-align:-webkit-auto"> Committee </font><br><span style="font-size:12.8px"><br></span><span style="font-size:12.8px;text-align:-webkit-auto">Mirus, Ben - </span><a href="mailto:bbmirus@usgs.gov" style="font-size:12.8px;text-align:-webkit-auto" target="_blank">bbmirus@usgs.gov</a><br><span style="font-size:13px;text-align:-webkit-auto">Josh Rigler - </span><a href="mailto:erigler@usgs.gov" style="font-size:13px;text-align:-webkit-auto" target="_blank">erigler@usgs.gov</a><br><span style="font-size:13px;text-align:-webkit-auto">Oliver Boyd - </span><a href="mailto:oboyd@usgs.gov" style="font-size:13px;text-align:-webkit-auto" target="_blank">oboyd@usgs.gov</a><br><div><div class="gmail_extra"><br></div></div>
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