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Tsunami deposits can imperfectly record th … Tsunami deposits can imperfectly record the hydraulic conditions of devastating extreme events. Sand entrainment, advection and deposition in these events occurs under strongly disequilibrium conditions in which traditional sediment transport models behave poorly. Quantitative models relating sediment characteristics to flow hydraulics hold the potential to improve coastal hazard assessments. However, data from recent natural tsunamis have rarely been accurate enough, over a range of parameter space, to quantitatively test proposed inverse models for predicting flow characteristics. To better understand how to “read” flow depth and velocity from disequilibrium deposits, we conducted controlled and repeatable laboratory flume experiments in which different grain size distributions (GSDs) of sand were entrained, transported and deposited by hydraulic bores. The bores were created by impounding and instantaneously releasing ~6 m^unding and instantaneously releasing ~6 m^ +
United States +
joelj@jsg.utexas.edu +
CSDMS 2018 annual meeting - Geoprocesses, geohazards +
University of Texas, Austin +
University of Texas, Austin +
Johnson +
Joel_Johnson_CSDMS_2018_annual_meeting.pdf +
Invited oral presentation +
Texas +
Texas +
Using tsunami sediment transport experiments to improve paleohydraulic inverse models +
TopXUOZWr3M +
United States +
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02:29:29, 6 August 2018 +
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22:34:15, 11 June 2025 +
Coastal Working Group +
