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<div style=""><font face="Calibri, sans-serif" style="color: rgb(32, 31, 30);"><span style="font-size:12pt"></span></font></div>
<p style="font-size: 11pt; text-decoration: none; margin: 0px; color: rgb(36, 36, 36); background-color: rgb(255, 255, 255);">
<span style="font-family: Calibri, Helvetica, sans-serif; font-size: 14pt;"><b>A framework to introduce partially non-ergodic PSHA to building codes</b></span></p>
<br class="Apple-interchange-newline">
<div style=""><font face="Calibri, sans-serif" style="color: rgb(32, 31, 30);"><span style="font-size: 12pt;"><b>Speaker:
</b>Adrian Rodriguez-Marek</span></font></div>
<div style=""><font face="Calibri, sans-serif" style="color: rgb(32, 31, 30);"><span style="font-size: 12pt;"> Virginia Tech</span></font></div>
<div style=""><font face="Calibri, sans-serif" style="color: rgb(32, 31, 30);"><span style="font-size: 16px;"><b>Location:
</b>hybrid (online and in person at 1711 Illinois St, Golden, CO, Rm 204)</span></font></div>
<div style=""><font face="Calibri, sans-serif" style="color: rgb(32, 31, 30);"><span style="font-size: 16px;"> *Non-USGS visitors welcome! Please bring a photo ID and arrive early to allow time to go through building security*</span></font></div>
<div style=""><font face="Calibri, sans-serif" style="color: rgb(32, 31, 30);"><span style="font-size: 16px;"><b>Date/Time:
</b>Tuesday, May 16, 2023 10-11AM MDT</span></font></div>
<div style=""><font face="Calibri, sans-serif" style="color: rgb(32, 31, 30);"><span style="font-size: 16px;">
<b>If you're interested in meeting with Adrian, please sign up <span><a href="https://doimspp.sharepoint.com/:x:/s/gs-ghsc-seminars2/ERLyXtl3Op9LiI9Oo5qN_bsBOWJn0RrR8T6nighJQrmizQ" rel="noopener noreferrer" contenteditable="false" id="OWA52b2c1f7-3bda-2e30-36c1-b2419b1c584f" class="OWAAutoLink WSYlv" data-ogsc="" data-loopstyle="undefined">here</a></span></b></span></font></div>
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<div style=""><font face="Calibri, sans-serif" style="color: rgb(32, 31, 30);"><span style="font-size: 16px;"><b>Abstract: </b><span style="font-size: 12pt; display: inline !important; background-color: rgb(255, 255, 255);" class="ContentPasted0">Over the
last decade, seismic hazard assessment projects for critical facilities have adopted a partially non-ergodic approach. This approach is postulated on identifying the portions of ground motion variability that are repeatable (and thus predictable) and transparently
identifying these as epistemic uncertainty, which can be reduced with additional information. In parallel, the aleatory variability (i.e., sigma) can be reduced by removing repeatable effects from the sigma. This talk reviews the implementation of the non-ergodic
approach in several recent projects, with a focus on the evolution of the quantification of epistemic uncertainty in site response. Finally, a framework for including a partially non-ergodic approach in building codes and the National Seismic Hazard Maps is
proposed. Results for a sample PSHA are presented and discussed.</span></span></font></div>
<div style=""><font face="Calibri, sans-serif" style="color: rgb(32, 31, 30);"><span style="font-size: 16px;"><span style="font-size: 12pt; display: inline !important; background-color: rgb(255, 255, 255);" class="ContentPasted0"><br>
</span></span></font></div>
<div style=""><font face="Calibri, sans-serif" style="color: rgb(32, 31, 30);"><span style="font-size: 16px;"><b>Bio: </b><span style="font-size: 12pt; margin: 0px; text-align: justify; background-color: rgb(255, 255, 255);" class="ContentPasted1">Dr. Adrian
Rodriguez-Marek obtained his B.S. and M.S. in Civil Engineering from Washington State University, and his Ph.D. from U.C. Berkeley in 2000 working under the guidance of Prof. Jonathan Bray. After getting his Ph.D. in August 2000 Adrian went back to WSU as
an</span><span style="font-size: 12pt; margin: 0px; text-align: justify; color: black; background-color: rgb(255, 255, 255);"><span style="margin: 0px; color: rgb(32, 31, 30); background-color: rgb(255, 255, 255);" class="ContentPasted1"> </span></span><span lang="is" style="font-size: 12pt; margin: 0px; text-align: justify; background-color: rgb(255, 255, 255);" class="ContentPasted1">Assistant</span><span style="font-size: 12pt; margin: 0px; text-align: justify; color: black; background-color: rgb(255, 255, 255);"><span style="margin: 0px; color: rgb(32, 31, 30); background-color: rgb(255, 255, 255);" class="ContentPasted1"> </span></span><span style="font-size: 12pt; margin: 0px; text-align: justify; background-color: rgb(255, 255, 255);" class="ContentPasted1">Professor.
He stayed at WSU until 2010 when he moved to Virginia Tech where he is now a professor in the Civil and Environmental Engineering Department.</span><span style="font-size: 12pt; margin: 0px; text-align: justify; color: black; background-color: rgb(255, 255, 255);"><span style="margin: 0px; color: rgb(32, 31, 30); background-color: rgb(255, 255, 255);" class="ContentPasted1"> </span></span><span style="font-size: 12pt; margin: 0px; text-align: justify; background-color: rgb(255, 255, 255);" class="ContentPasted1">Dr.
Rodriguez-Marek’s research is in the general area of geotechnical earthquake engineering. He has led NSF-funded reconnaissance teams to study the geotechnical aspects of three separate earthquakes (2001 Southern Peru; 2003 Colima, Mexico; and 2007 Pisco, Peru
earthquakes). He has also made contributions to the engineering characterizations of ground motions in general and near-fault ground motions in particular. His work on site amplification in the Northridge and Loma Prieta earthquakes contributed to understanding
potential limitations in code site-classification and amplification factors. He has also been a leading developer of the concept of non-ergodic seismic hazard analysis. This concept leads to a much more rigorous treatment of uncertainty in ground motions in
hazard analysis applications. Dr. Rodriguez-Marek has been a member of the ground motion characterization team in several project for the seismic hazard assessment of critical facilities in the U.S. and abroad. </span></span></font></div>
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</span></span></font></div>
<div style=""><font face="Calibri, sans-serif" style="color: rgb(32, 31, 30);"><span style="font-size: 12pt; color: rgb(102, 102, 102);">For questions, comments, or speaker suggestions, please contact the </span></font><b style="font-family: inherit; font-size: 12pt; font-style: inherit; font-variant-ligatures: inherit; font-variant-caps: inherit;"><span style="font-weight:400"><span style="font-size: 12pt; font-family: Calibri, sans-serif; color: rgb(102, 102, 102);">GHSC
Seminar Committee: Andrea Llenos <allenos@usgs.gov>, Benjamin Murphy <bmurphy@usgs.gov>, Lauren Schaefer <lschaefer@usgs.gov></span></span></b></div>
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