SUNMONTUEWEDTHUFRISAT
Events for March 14, 2014
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Astani CEE Oral Dissertation Defense
Fri, Mar 14, 2014 @ 01:00 PM - 03:00 PM
Sonny Astani Department of Civil and Environmental Engineering
Conferences, Lectures, & Seminars
Speaker: Lesley Ewing, Astani CEE Ph.D. Student
Talk Title: Community Resilience to Coastal Disasters
Abstract:
Coastal communities are some of the major economic centers in both the US and the world, and coastal hazards make these areas prone to disasters. Resilience is joining the more traditional approaches available to communities for reducing the consequences of hazard events, which include erosion, inundation, flooding and wave impacts. Traditionally community resilience has covered both the extent to which a hazard event damages a community as well as the subsequent recovery; however, no method has been developed to assess community resilience resulting from various protection options.
The Coastal Community Hazard Protection Resilience Index (CCHPR Index) provides a measure of the resilience of a community’s existing coastal protection and opportunities to compare the changes community resilience brought on by different modifications or additions to coastal protection systems. This research describes the development of this index. It starts with an analysis of the key services of a community and the interdependencies of these services. The research then establishes four phases of a disaster â the pre-event phase, the event phase, the recovery phase, and the on-going activities phase. The key community services are characterized within these four disaster phases as are aspects of coastal hazard events. Lessons about coastal protection are discussed, based on field investigations of recent disasters. Coastal protection options are identified and evaluated for their effects on resilience throughout the four phases of a disaster, and these effects on resilience are used as inputs to the CCHPR Index.
Location: Kaprielian Hall (KAP) - 209
Audiences: Everyone Is Invited
Contact: Evangeline Reyes
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Astani CEE Ph.D. Seminar
Fri, Mar 14, 2014 @ 04:00 PM - 05:00 PM
Sonny Astani Department of Civil and Environmental Engineering
Conferences, Lectures, & Seminars
Speaker: Aycut Ayca and Nikos Kalligeris, Astani CEE Ph.D. Student
Talk Title: Current-Based Hazard Mapping in California Ports and Harbors
Abstract: First Presenter-Aycut Ayca
4:00-4:20pm(10 minutes Q&A)
As observed by recent tsunamis in California, maritime communities are the initial and primary communities to be impacted by tsunamis. These recent events which put portions of California’s coast into either an Tsunami Advisory or Warning levelâ¦2006 Kuril Islands, 2009 Samoa, 2010 Chile, 2011 Japan, and 2012 British Columbiaâ¦have caused over $100M in damages to over two dozen maritime communities in California.
In this presentation, the well-established approaches of coupling tsunami generation to seismic seafloor motion and the following trans-oceanic wave propagation will be briefly introduced. The focus of the discussion will be on the complex transformation of the tsunami as it approaches very shallow water, as well as how these possibly large and fast-moving water waves interact with coastal infrastructure. Most of the hydrodynamic results presented in this study come from the application of the âMethod of Splitting Tsunami’ (MOST) numerical model. The MOST model was developed in USC and has been used extensively for tsunami hazard assessments in the United States and is currently in operational use at NOAA’s Pacific Marine Environmental Laboratory (PMEL).
First part of this study will be current based hazard mapping. This will include predicting maximum current speeds in a particular port/harbor because of a tsunami and probabilistic assessment of tsunami-induced nearshore currents. The objective of this effort is to develop a set of probabilistic current maps (PCM’s) in a specific harbor. Output will be current maps at specific recurrence levels. The use of PCM’s would primarily be for planning and engineering design â mitigation of tsunami impacts. In addition, once the current-based hazard maps are developed, it becomes feasible to quantify risk and make informed decisions regarding existing and future development.
Then the modelling of debris and sediment movement and modeling updated mitigation measures within pilot study areas will be conducted. Then these would help with the development of 1) guidance for harbors to use with regard to debris and sediment movement, and 2) fragility curves for tsunami damage within harbors. This will be achieved by coupling MOST with a sediment transport model.
Second Presenter: Nikos Kalligeris
4:30-4:50 (10 minutes Q&A)
Location: John Stauffer Science Lecture Hall (SLH) - 102
Audiences: Everyone Is Invited
Contact: Evangeline Reyes
