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Pre-tsunami Japan: 2010

Sendai Coastal Plain, Miyagi Prefecture

The map below shows the location of the M9 March 11, 2011 earthquake near the east coast of Honshu, Japan (the yellow flag, or eastern-most flag shown on map) and its proximity to Arahama Beach on the Sendai Coastal Plain (the red flag, or western-most flag shown on map), Miyagi Prefecture, Japan.

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Below left, vertical aerial photograph of Arahama Beach, Sendai, Japan showing coastal protection structures and township in October 2006 [Larger version]. Below right, vertical aerial photograph of Arahama Beach, Sendai, Japan showing extensive damage to structures on the coastal plain. The detached breakwater and coastal seawall are still visible, and they appear to have not undergone significant damage although the tsunami overtopped both structures. Photograph taken on March 12, 2011 after the recent tsunami. [Larger local version]. (See below for more information; online full-resolution version of this photo: http://cyberjapandata.gsi.go.jp/h23taiheiyo-ok/photo/sendai/thumb/C02/CTO-2010-4-C02_0123.jpg)

Both photos courtesy of Geospatial Information Authority of Japan (GSI).

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More information on the 12 March 2011 Sendai aerial photography:

• From the blog: “The 2011 off the coast of Tohoku Earthquake Tsunami Information”
  http://www.coastal.jp/tsunami2011/index.php?Satellite%2FAerial%20photographs
  is a link to the Japanese web site: http://saigai.gsi.go.jp/h23taiheiyo-hr/index.html
  • Before and after photos, side-by-side and orthorectified (“geometrically corrected”):
    http://saigai.gsi.go.jp/h23taiheiyo-ok/hikaku/arahama.pdf
    • Before: 10/31/2006: Follow the “200 dpi” button on this page, for a higher-resolution photo
      http://archive.gsi.go.jp/airphoto/ViewPhotoServlet?workname=CTO20061X&courseno=C12&photono=16
    • After: 3/12/2011: Image originally linked off the PDF is no longer available—see individually-referenced quads below
    • Individual georeferenced JPEG quadrangles:
      http://saigai.gsi.go.jp/h23taiheiyo-zort/block/index_sendai.html
      The aerial photo of post-tsunami Sendai, shown above (on this page), is a composite of these two quadrangles:
      • Quad 533: http://saigai.jmc.or.jp/h23taiheiyo-ok/ortho/sendai/Ortho_JPEG/20110315-10QE533-A0.jpg and
      • Quad 631: http://saigai.jmc.or.jp/h23taiheiyo-ok/ortho/sendai/Ortho_JPEG/20110315-10QE631-A0.jpg

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