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Ground Surface Breakage Due to Strong Shaking Mw 6.5 San Simeon earthquake of 12/22/03 [note: surface faulting has not been found]

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Presentation on theme: "Ground Surface Breakage Due to Strong Shaking Mw 6.5 San Simeon earthquake of 12/22/03 [note: surface faulting has not been found]"— Presentation transcript:

1 Ground Surface Breakage Due to Strong Shaking Mw 6.5 San Simeon earthquake of 12/22/03 [note: surface faulting has not been found]

2 Strong shaking along a ridgeline, approximately 24 km southeast of the epicenter, caused tiles to slip off various roof sections. (Treiman, Manson)

3 Cracks and ground settlement due to ridgetop spreading on Black Mountain, approximately 24 km southeast of the epicenter. (Manson)

4 Cracks and ground settlement due to ridgetop spreading on Black Mountain, approximately 24 km southeast of the epicenter. (Manson)

5 Uncemented stone wall, approximately 24 km southeast of the epicenter, has partially toppled due to ground shaking. (Treiman)

6 Fissures from ridgetop spreading extend from the parking area of a house to a barn/shop structure. (site is ~25 km from the epicenter) (Treiman)

7 Fissures from ridgetop spreading extend toward barn/shop structure. (Treiman)

8 Ridgetop spreading has caused earth to pull away from concrete slab foundation of structure; fissures extend northeast into wooded slope. (Manson)

9 Fissures from ridgetop spreading extend northeast into wooded slope. (Manson)


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