ML090720103

Diablo Canyon Power Plant, Unit Nos. 1 and 2 - Additional Slides - Seismic Information (TAC ME0174 and ME0175)

ML090720103
Person / Time
Site:	Diablo Canyon
Issue date:	03/11/2009
From:	Ketelsen S C Pacific Gas & Electric Co
To:	Wang A B 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

J. Hardebeck (USGS)Seismicity October 1987 to March 2007 DCPP H o s g r i f a u l t z o n e Seismicity cross sections October 1987 to March 2007 J. Hardebeck (USGS)

J. Hardebeck (USGS)Black: good quality single-event mechanisms Gray: lower quality single-event mechanisms

Red: composite mechanisms Focal mechanisms show predominantly strike-slip motion

in the offshore region DCPP H o s g r i f a u l t z o n e 1 N 15 E Reprocessed gravity data for the region S a n A n d re a s F a u l t S a n A n d re a s F a u l t H os gr i F a u l t H os gr i F a u l t Marine Data Marine Data Collection Collection

-June 2008-35 ft R/V Parke Snavely-Survey area = 900 km 2-Line Spacing (800/400 m)

-Rock samplesPicture taken by: D. Scheirer H o sg r i F a u l t Z o n e C a m b r i a F a u l t C F E d n a F a u l t O c e a n o F a u l t Olson Fault San Luis Bay Fault Wilmar Ave. Fault L o s O s o s F a u l t Morro Bay Pt.Buchon L o s O s o s F a u l t C a m b r i a F a u l t C F E d n a F a u lt O c e a n o F a u l t Olson Fault San Luis Bay Fault Wilmar Ave. Fault H o s g r i F a u l t Z o n e Comparison of Earthquake Locations with Marine Magnetic Data DCPPJanet Watt (USGS)H o s g r i f a u l t z o n e 200 m~ 20 m v.e ~ 3 200 m~ 20 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)