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Japan Integrated Velocity Structure Model (JIVSM), Version 1
                                                         Feb. 26, 2020
                                                         Apr.  9, 2018
        Nov. 11, 2011
        (C) 2011 K. Koketsu and H. Miyake

        Before using the model, please read the following.
        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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<Notes>
+ When you publish results produced by the model, you have to refer to:
Koketsu, K., H. Miyake, and H. Suzuki (2012). Japan Integrated Velocity
Structure Model Version 1, Proc. World Conf. Earthq. Eng., Paper No. 1773.
and
Koketsu, K., H. Miyake, Afnimar, and Y. Tanaka (2009). A proposal for
a standard procedure of modeling 3-D velocity structures and its
application to the Tokyo metropolitan area, Japan, Tectonophysics, 472, 290-300.
+ You are forbidden to use the model for profit.
+ The authors do not accept any responsibility for troubles resulting
  from the use of the model.
+ You may distribute this package to any person without modification.
  If you would like to distribute this package with modifications
  (including partial revisions and file deletions), you have to
  contact the authors.
            authors: Kazuki Koketsu and Hiroe Miyake
                     Earthquake Research Institute
                     University of Tokyo
                     Yayoi 1-1-1, Bunkyo-ku, Tokyo 113-0032, Japan
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<Files>
cross_section_deep.docx   : Cross sections of the model
cross_section_shallow.docx: Cross sections of the shallow part
layer_thickness1-14_altitude15-23_1125.doc: (in Japanese)
                            Distributions of depths or altitudes of the layers
material_property0531revise.xls:
                            Material properties of the layers
read_JIVSM_layer.f        : FORTRAN program to read and arrange the model
README.txt                : This file
Tectono2009_koketsu.pdf   : Tectonophysics paper mentioned above
WCEE2012_koketsu.pdf      : WCEE paper mentioned above
WCEE2008_koketsu.pdf      : WCEE paper for a preliminary version
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<Downloads>
You have to download the followings.
+ Eastern Japan
Ejapan_path2011110.dat in
https://www.jishin.go.jp/main/chousa/12_choshuki/dat/nankai/lp2012nankai-e_str.zip
1032 data along longitude
1561 data along latitude
+ Western Japan
Wjapan_path20111110.dat in
https://www.jishin.go.jp/main/chousa/12_choshuki/dat/nankai/lp2012nankai-w_str.zip
969 data along longitude
949 data along latitude
* Note that these data and their addresses may be changed without
 notice in the future.
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<Data format>
longitude, latitude, top depth of the 1st layer (topography),
top depth of the 2nd layer, .... top depth of the 23rd layer
* Note that longitudes and latitudes are based on the Tokyo Datum, not WGS84.
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<read_JIVSM_layer.f>
After downloading Wjapan_path20111110.dat and compiling
read_JIVSM_layer.f, its execution results in
W_depth_JIVSM20111110.str
Same as "Wjapan_path20111110.dat".
W_depth_JIVSM20111110.str
The western Japan model where the ground surface is shifted to zero
depth and the depths of the 1st to 14th layers are changed by this
shift avoiding layer overlapping.
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<Supplementary information> (in Japanese)
Long-Period Ground Motion Hazard Maps 2009
https://www.jishin.go.jp/main/chousa/09_choshuki/choshuki2009.pdf
Long-Period Ground Motion Hazard Maps 2012
https://www.jishin.go.jp/main/chousa/12_choshuki/choshuki2012.pdf
* Note that these supplements and their addresses may be changed
  without notice in the future.
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