Seismic Hazard Assessment of the San Joaquin Hills Using GIS
Daniel Raymond
UC Irvine
deraymon@uci.edu
Mentor: Lisa Grant, UCI
The San Joaquin Hills region in southern
Orange County is an area that is undergoing tremendous growth.
Recent studies suggest that the anticlinal structure of the San
Joaquin hills is due to a combination of folding, and faulting
in the area. The tectonic and seismic hazard significance of the
faults is not understood. Considering the rapid growth of the
region, it is imperative that the seismic hazard of these faults
be assessed so regional planning can proceed in an informed manner.
The goal of my research project is to create a GIS-based map and
database, which will compile information on these faults from
geotechnical development reports and unpublished geologic maps.
This information may be used to assess seismic hazards in the
San Joaquin Hills region. This project involves collecting fault
data from geologic consulting firms along with local and regional
governments. The data is the basis for a regional GIS map, which
will display important seismic hazard information such as recency
of fault rupture, fault location and dip, sense of motion (if
known) and a bibliography of published and unpublished sources.
It is my goal to make this map as useful as possible for the sound
planning of the region. If the faulting and neotectonic structures
can be considered and incorporated into mitigation measures for
the area, the risk of property damage and loss of life may be
significantly reduced in the future.
Table of Contents
Seismic Hazard Assessment of the San Joaquin Hills Using GIS
Map and Database: Evaluation Criteria
Map and Database: Fault Location and Dip
Map and Database: Recency of Rupture
Map and Database: Sense of Motion