Location
San Diego, California
Presentation Date
28 May 2010, 2:00 pm - 3:30 pm
Abstract
This paper presents the results of a fault hazard study performed as part of a proposed traffic tunnel project in Coronado, California. The 2.3 km alignment crosses the Coronado fault, which is considered active by the California Geological Survey. Although the location of the Coronado fault offshore of Coronado had been well established through previous studies, the fault had never been definitively located on land. A study was undertaken that utilized four principal investigation methods: a seismic reflection survey, large diameter borings, closely-spaced cone penetrometer tests (CPT) and a fault trench. This study was the first to positively locate the Coronado fault on land and to show that approximately 29 cm of vertical displacement has occurred in the Holocene. The field investigation provided evidence that strike slip displacement has also occurred. For design purposes, the strike slip offset was estimated using an empirical model and several kinematic models that integrated aspects of the local tectonic regime. Fault offset design criteria were established for the project that accounted for uncertainty in the fault zone location and the potential for secondary faulting outside the primary fault zone.
Department(s)
Civil, Architectural and Environmental Engineering
Meeting Name
5th International Conference on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics
Publisher
Missouri University of Science and Technology
Document Version
Final Version
Rights
© 2010 Missouri University of Science and Technology, All rights reserved.
Creative Commons Licensing
This work is licensed under a Creative Commons Attribution-Noncommercial-No Derivative Works 4.0 License.
Document Type
Article - Conference proceedings
File Type
text
Language
English
Recommended Citation
Gingery, James R.; Rugg, Scott H.; Rockwell, Thomas K.; and Hilton, Bruce R., "Fault Hazard Characterization for a Transportation Tunnel Project in Coronado, California" (2010). International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics. 2.
https://scholarsmine.mst.edu/icrageesd/05icrageesd/session07c/2
Included in
Fault Hazard Characterization for a Transportation Tunnel Project in Coronado, California
San Diego, California
This paper presents the results of a fault hazard study performed as part of a proposed traffic tunnel project in Coronado, California. The 2.3 km alignment crosses the Coronado fault, which is considered active by the California Geological Survey. Although the location of the Coronado fault offshore of Coronado had been well established through previous studies, the fault had never been definitively located on land. A study was undertaken that utilized four principal investigation methods: a seismic reflection survey, large diameter borings, closely-spaced cone penetrometer tests (CPT) and a fault trench. This study was the first to positively locate the Coronado fault on land and to show that approximately 29 cm of vertical displacement has occurred in the Holocene. The field investigation provided evidence that strike slip displacement has also occurred. For design purposes, the strike slip offset was estimated using an empirical model and several kinematic models that integrated aspects of the local tectonic regime. Fault offset design criteria were established for the project that accounted for uncertainty in the fault zone location and the potential for secondary faulting outside the primary fault zone.
