<div dir="ltr"><div class="gmail_quote"><b style="color:rgb(255,0,0)"><font size="4">An overview of GNSS Applications for real-time seismic monitoring and early warning</font></b><br><font face="Helvetica, Arial"><br></font><b style="font-family:arial,helvetica,sans-serif">Brendan Crowell</b><br><i style="font-family:arial,helvetica,sans-serif">University of Washington </i><br><font face="arial, helvetica, sans-serif"><i><br></i></font>In the past decade, the availability of real-time, high-rate (1 Hz or greater), geodetic-grade Global Navigation Satellite System (GNSS) stations has exploded globally. In conjunction with this, products and techniques to efficiently and robustly process these streams have improved considerably to the point sub-cm accuracy is possibly over the time span of earthquake rupture and propagation. GNSS data is especially useful because it is capable of capturing the true deformation field without going off-scale, from the dynamic shaking, coseismic displacements, all the way to the long-term tectonic motions. In contrast, the ability to characterize large earthquakes is problematic with traditional near-field seismic data and techniques due to drifts and rotations at inertial sensors. In this talk, I will show the evolution of this technology from the early 2000s to today, highlighting the techniques for rapid earthquake source characterization and how we are using these products for operational earthquake and tsunami early warnings. I will show how these products can improve real-time ground motion predictions for some recent earthquakes as well as demonstrate the ability to provide near-field tsunami forecasts. I will finish by describing some future prospects in seismic monitoring with real-time geodetic observations.<br><font face="arial, helvetica, sans-serif"><b><br></b></font><b style="font-family:arial,helvetica,sans-serif"><div style="display:inline"><div style="display:inline">Thursday, November 14th</div></div></b><b style="font-family:arial,helvetica,sans-serif">, 2019</b><br><b style="font-family:arial,helvetica,sans-serif"><div style="display:inline"><div style="display:inline"><div style="display:inline"><div style="display:inline">10-11am</div></div></div></div></b><b style="font-family:arial,helvetica,sans-serif"><div style="display:inline"><div style="display:inline"><div style="display:inline"></div> </div></div> (Mountain Time)</b><br><b style="font-family:arial,helvetica,sans-serif">USGS, 1711 Illinois Street, Golden, CO</b><br><b style="font-family:arial,helvetica,sans-serif">Entry Level Seminar Room (204)</b><br><font face="arial, helvetica, sans-serif"><br></font><span style="font-family:arial,helvetica,sans-serif">*Note: Please arrive </span><u style="font-family:arial,helvetica,sans-serif">~5 minutes early</u><span style="font-family:arial,helvetica,sans-serif"> and </span><u style="font-family:arial,helvetica,sans-serif">bring photo ID</u><span style="font-family:arial,helvetica,sans-serif"> for airport-style security </span><span style="font-family:arial,helvetica,sans-serif">measures now in place at the USGS building.</span><br><font face="arial, helvetica, sans-serif"><br></font><span style="font-family:arial,helvetica,sans-serif">Thank you,</span><br><span style="font-family:arial,helvetica,sans-serif">GHSC</span><span style="font-family:arial,helvetica,sans-serif"> </span><span style="font-family:arial,helvetica,sans-serif">Seminar</span><font style="font-family:arial,helvetica,sans-serif"> Committee </font><br><font face="arial, helvetica, sans-serif"><br></font><div style="font-family:arial,helvetica,sans-serif;display:inline">Ben </div><span style="font-family:arial,helvetica,sans-serif">Mirus - </span><a href="mailto:bbmirus@usgs.gov" target="_blank" style="font-family:arial,helvetica,sans-serif">bbmirus@usgs.gov</a><br><span style="font-family:arial,helvetica,sans-serif">Josh Rigler - </span><a href="mailto:erigler@usgs.gov" target="_blank" style="font-family:arial,helvetica,sans-serif">erigler@usgs.gov</a><br><div><div class="gmail_quote"><div><div class="gmail_quote"><div><div><div class="gmail_quote"><div><div class="gmail_quote"><div><div class="gmail_quote"><div><div class="gmail_quote"><div><div><div><div><div><div><div class="gmail_quote"><div><div class="gmail_quote"><div><div><div><div><div class="gmail_quote"><div><div class="gmail_quote"><div><div><div><div class="gmail_quote"><div><div class="gmail_quote"><div><div class="gmail_quote"><div><div><div><div class="gmail_quote"><div><div class="gmail_quote"><div><div class="gmail_quote"><div><div><div class="gmail_quote"><div><div class="gmail_quote"><font face="arial, helvetica, sans-serif">Oliver Boyd - <a href="mailto:oboyd@usgs.gov" target="_blank">olboyd@usgs.gov</a></font></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></d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