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Interplate earthquake: 1994 Sanriku (Ms 7.6) Nakayama & Takeo (1997)

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Presentation on theme: "Interplate earthquake: 1994 Sanriku (Ms 7.6) Nakayama & Takeo (1997)"— Presentation transcript:

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3 Interplate earthquake: 1994 Sanriku (Ms 7.6)
Nakayama & Takeo (1997)

4 Seno et al. (1993)

5 Recurrence intervals of great earthquakes
Central Honshu 1923 Taisho Tokai, 1707, 1854 Kanto ∞ ~1500 ~400 1703 Genroku Izu ~1500 ~150 yrs ∞

6 Fault strength Tectonic stress Lithostatic pressure 3 km 30 km
100 MPa 1 GPA Lithostatic pressure 3 km 30 km Weakening Depth

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8 Trench – Outer rise earthquakes
Seno and Yamanaka (1996)

9 Age of the plate at the epicenter
Tension Depth Compression Seno and Yamanaka (1996)

10 Intermediate-depth earthquakes: Northern Honshu
Matsuzawa et al. (1988)

11 Dehydration instability: Serpentinite
Raleigh & Paterson (1965)

12 Upper plate faulting types:
Honshu - Kyushu Huzita (1980)

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17 Tapponnier et al. (1982)

18 Accretion Suture zone Plate boundary Molnar (1984)

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