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Today’s earthquake in Northern Japan is 5th strongest since 1900-- 8.9

Today’s earthquake in Northern Japan is 5th strongest since 1900-- 8.9. 1. This map (textbook Fig. 18.13) was made before the great Indonesian earthquake of December, 2004 (small black arrow), And March 11, 2011 Japanese earthquake. Note that strain was accumulating.

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Today’s earthquake in Northern Japan is 5th strongest since 1900-- 8.9

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  1. Today’s earthquake in Northern Japan is 5th strongest since 1900-- 8.9 1

  2. This map (textbook Fig. 18.13) was made before the great Indonesian earthquake of December, 2004 (small black arrow), And March 11, 2011 Japanese earthquake. Note that strain was accumulating. Also note that although strain was actually accumulating in central Chile and Cascadia (red arrows), this map didn’t show it. 2

  3. Good Friday Earthquake- Anchorage, Alaska; “Most powerful earthquake in U.S. history” 3 Next photo from shore of Cook Inlet

  4. Trees near shoreline were killed in area of subsidence when their roots were exposed to salt water. 4

  5. Coral reef uplifted by Dec. 26, 2004 tsunami in Sumatra 5

  6. Dec. 26, 2004 Magnitude 9.0 11

  7. Tsunami or seismic sea wave 12

  8. Civilization exists by geologic consent, subject to change without notice. Will Durant 13

  9. January 1, 2004 January 1, 2005 Lhoknga, Indonesia 14

  10. Beach scene at Madras, southern India, December 26, 2004 15

  11. Damage from tsunami at Seward, Alaska (1964) 16

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  15. 20 Quake Lake, NW of Yellowstone Park

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  18. Damage during the 1964 earthquake at Niigata, Japan resulted from liquefaction of the underlying sediment. Hundreds of buildings were affected; many were simply winched back into place. 23

  19. Liquefaction The transformation of a loosely packed body of sediment into a fluid mass. 24

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  21. Marina District of San Francisco Man-made fill (not compacted); composed of debris from 1906 earthquake This part of the city (built on fill) suffered heavy damage during 1989 earthquake. 26

  22. Sand “Volcano” triggered by earthquake 27

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