Faculty Candidate Seminar - Timu Gallien

05/09/2016 - 1:30pm
Nierenberg Hall 101
Event Description: 


DATE:   May 9th, Monday, 1:30 p.m.  

LOCATION:  Nierenberg Hall 101
SPEAKER:   Timu Gallien, PhD, Scripps Institution of Oceanography

TITLE:   Urban Coastal Flood Prediction and Management: Beaches, Backshores, Bathtubs and Bulldozers

ABSTRACT: Coastal flooding represents a significant humanitarian and socioeconomic hazard. Vulnerable communities increasingly demand site-specific sea level rise impact information to accurately quantify evolving flood risks. National-scale sea level rise assessments rely on simple ‘bathtub’ models that compare land and future water level elevations. This research analyzes the performance of a site- specific mechanistic modeling methodology that explicitly includes tides, storm surge, waves, beach erosion, and flood control infrastructure. Accuracy is evaluated using field observations at two southern California sites. Hydrodynamic modeling methodologies integrating flood control infrastructure and wave overtopping processes significantly outperform widely used ‘bathtub’ models. Results show skilled flood predictions require substantially higher quality flood defense elevation and beach topography data than is currently associated with LiDAR. Finally, flood mitigation measures (e.g., nourishment, elevated sea walls, storm drains, berming) have significant, and at times, unintended implications for backshore flooding.
Faculty Host:  Myrl Hendershott (mhendershott@ucsd.edu)
For more information on this event, contact: 
Leslie Costi
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