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<p class="MsoNormal"><b><span style="font-size:14.0pt;color:black">Towards Post-fire Debris Flow Inundation Hazard Assessments</span></b><span style="font-size:12.0pt;color:black"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt;color:black"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt;color:black">Speaker: <b>Katherine "Katy" Barnhart</b>,<br>
USGS,<br>
GHSC<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt;color:black">Location: online/virtual (<a href="https://gcc02.safelinks.protection.outlook.com/?url=https%3A%2F%2Fteams.microsoft.com%2Fl%2Fmeetup-join%2F19%253ameeting_NWUwZmY2YzAtMDJlNS00OGZiLWIwNzUtMzU2NDE0YmU3MDli%2540thread.v2%2F0%3Fcontext%3D%257b%2522Tid%2522%253a%25220693b5ba-4b18-4d7b-9341-f32f400a5494%2522%252c%2522Oid%2522%253a%2522d6329638-ca90-40d3-9ece-4674ffcbda6a%2522%257d&data=04%7C01%7Cghsc-seminars%40geohazards.usgs.gov%7C8545212849b448c5ec0d08d9a2eed4f2%7C0693b5ba4b184d7b9341f32f400a5494%7C0%7C0%7C637719968915905066%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=%2Bo3ecnOOS8WQ9FLq8qgsTPwcMotgD7q3SK7%2BvtJby8g%3D&reserved=0" originalsrc="https://teams.microsoft.com/l/meetup-join/19%3ameeting_NWUwZmY2YzAtMDJlNS00OGZiLWIwNzUtMzU2NDE0YmU3MDli%40thread.v2/0?context=%7b%22Tid%22%3a%220693b5ba-4b18-4d7b-9341-f32f400a5494%22%2c%22Oid%22%3a%22d6329638-ca90-40d3-9ece-4674ffcbda6a%22%7d" shash="uCjbGTXMjTJ/GHMB9eyZwGx2mR1Ci4psDi0HXkEMyQbcemTBnqwH/mKFAEzuVSoJZ7dhb/UdnWJXQ2SSq/++/QL/iQdz2uV7J9rZORxfNuxwe0WzSKI8ARBet7zYVtGCYSkUS2Dt9xRNQGh02OdPiqx0uUXcQtzIkcWnoRL1DKM=" target="_blank" title="https://teams.microsoft.com/l/meetup-join/19%3ameeting_NWUwZmY2YzAtMDJlNS00OGZiLWIwNzUtMzU2NDE0YmU3MDli%40thread.v2/0?context=%7b%22Tid%22%3a%220693b5ba-4b18-4d7b-9341-f32f400a5494%22%2c%22Oid%22%3a%22d6329638-ca90-40d3-9ece-4674ffcbda6a%22%7d">MS
Teams Meeting</a>)<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt;color:black">Date/Time: Tuesday, November 9th, 2021, 10am MDT<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt;color:black"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt;color:black">Abstract: Hazard assessment for post-wildfire debris flows, which are common in the steep terrain of the western United States, has focused on the susceptibility of upstream basins to generate
debris flows. However, reducing public exposure to this hazard also requires an assessment of hazards in downstream areas that might be inundated during debris flow runout. Debris flow runout models are widely available, but their application to hazard assessment
for post-wildfire debris flows has not been extensively tested. I will discuss a study in which we apply three candidate debris flow runout models in the context of the 9 January 2018 Montecito event. We evaluate the relative importance of flow volume and
flow material properties in successfully simulating the event. Additionally, I will describe an in-progress user needs assessment designed to understand how professional decision makers (e.g., county emergency managers, floodplain manager, and Burned Area
Emergency Response team members) might use post-fire debris flow inundation hazard assessment information.
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<p class="MsoNormal"><span style="font-size:12.0pt;color:black"><img border="0" width="900" height="506" style="width:9.375in;height:5.2708in" id="Picture_x0020_1" src="cid:image001.png@01D7D49C.E2F06130"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt;color:black">Bio: </span><span style="font-size:12.0pt;font-family:'Arial',sans-serif;color:black">Katy Barnhart is a Research Civil Engineer at the U.S. Geological Survey Geologic Hazards Science Center. She
received her B.S.E. (2008) in Civil and Environmental Engineering from Princeton University and her M.S. (2010) and Ph.D. (2015) in Geological Sciences from the University of Colorado at Boulder. Her research uses numerical modeling to understand past and
forecast future geomorphic change on a variety of timescales. </span><span style="font-size:12.0pt;color:black"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt;color:black"><img border="0" width="300" height="200" style="width:3.125in;height:2.0833in" id="Picture_x0020_2" src="cid:image002.png@01D7D49C.E2F06130"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt;color:black">GHSC Seminar Committee: Oliver Boyd <olboyd@usgs.gov>, Josh Rigler <erigler@usgs.gov>, Francis Rengers <frengers@usgs.gov><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="color:#5F5F5F">________________________________________________________________________________</span>
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