1. La Jolla, San Diego Small faults in San Diego & La Jolla yellow -> gen. fault trend red -> small faults Mt. Soledad formed by tectonic uplift N

2. La Jolla and Scripps Canyon Submarine canyon Proximal to LJ Shores and SIO Associated w/ regional faults Terraces along N&S faces of Scripps Canyon LJ Canyon

3. Bathymetry of Scripps Canyon Bulletin of the Geological Society of America 60:1597-1612, 1949

8. Results from Multibeam Data N

9. Seismics Examination of sub- bottom structure Examination of sub- bottom structure Origin of terraces and associated blocks Origin of terraces and associated blocks Explain asymmetric profile canyon Explain asymmetric profile canyon

10. Seismic Surveying Kennedy, 1980 R/V Ellen B. Scripps in 1977 and R/V Polaris in 1970 Yield: 2,000 km medium and high resolution sub- bottom reflection profiles Portions used marked in red

11. Seismic Data

12. Concepts of Ward’s Tsunami Model  Determine perturbation of sea floor shape and project perturbation onto sea surface over time and space  Classical Tsunami Theory: Rigid sea floor Sea water is “incompressible, homogenous, and non-viscous”  Linear wave theory: Ratio of a wave’s amplitude to wavelength much less than 1 Allows modeling of complex events through the superposition of simpler ones

13. Slide Motion Failure area broken into separate pistons Each piston can move vertically, horizontally or a combination of the two Slide would be south towards the bottom of the canyon N

14. Modeling Results Time This Corresponds to this Maximum wave height

15. Tsunami Run Up & Effects Streets that are below 5m: Camino Del Oro, Vallecitos, Avenida de la Playa, El Paseo Grande, Paseo del Ocaso Property value range: $275,000 – $1.37 million. Average cost: $700,000 During the summer months 17,000 people/day visit La Jolla Shores Beach

16. Extras