ML090720103

Additional Slides - Seismic Information

ML090720103
Person / Time
Site:	Diablo Canyon
Issue date:	03/11/2009
From:	Ketelsen S Pacific Gas & Electric Co
To:	Wang A Plant Licensing Branch IV
Wang, A B, NRR/DORL/LPLIV, 415-1445
Shared Package
ML090720086	List: ML090720091 ML090720103
References
TAC ME0174, TAC ME0175
Download: ML090720103 (12)

Text

Seismicity October 1987 to March 2007 ri f DCPP sg Ho au e

on lt z J. Hardebeck (USGS)

Seismicity ross sections October 1987 to March 2007 J. Hardebeck (USGS)

Focal mechanisms show predominantly strike-slip motion in the offshore region sg ri f 1 N 15 E Ho au e

on lt z DCPP Black: good quality single-event mechanisms Gray: lower quality single-event mechanisms Red: composite mechanisms J. Hardebeck (USGS)

Reprocessed gravity data n

Sa s

for the region ea dr An ult Fa t

aul iF sgr Ho

Marine Data CF Collection Ca mb ria Fa ult June 2008 Morro Bay 35 ft R/V Parke Snavely Survey area = 900 km2 Los Os os Fa Ed ult Line Spacing (800/400 m) na Fau Pt. lt Rock samples Buchon ri sg e Olson Fault San Luis Bay Ho Zon Fault ult Wilmar Ave.

Fa Fault Oc e

Fa ano ult Picture taken by: D. Scheirer

F Ca mb ria Fa ult Los Os os Faul Edn t a Fa ult ri Olson Fault San Luis Bay sg e Ho Zon Fault ult Wilmar Ave.

Fa Fault Oc e

Fa ano ult

ri f sg Ho DCPP au e

on lt z Janet Watt (USGS)

~ 20 m 200 m v.e ~ 3

~ 20 m 200 m v.e ~ 3 2 m multibeam bathymetry collected off Point Buchon DCPP

Initial Evaluation of Seismic Demands from Assumed Fault

• Magnitude

- Based on the size of the fault

• 24 km length (extended to the intersection with Hosgri)

• 12 km depth

- M = 6.5

• Distance

- 1 km from DCPP (assumed)

Initial Evaluation of Ground Motion (84th Percentile Deterministic)