Seismic Hazard Maps for Specified Seismic Source Faults：Guide for file “Fault
coordinates by detailed method”
1. Abstract
This guide describes the file of fault coordinates by conventional method in Seismic Hazard
Maps for Specified Seismic Source Faults. Each fault model is described by one file. The
details are as follows.
2. File naming rule
File naming rule is as follows:
<Class 1 string>-<Class 2 string>-<Class 3 string>.csv
<Class x string>: <sub-class x-1 string>_<sub-class x-2 string>_... . x = 1,2,3.
Table 2-1 shows the classes and sub-classes.
Table 2-1
Class
Sub-class
Class 1
1-1
Class 2
Class 3
Class and sub-class
Sub-class
1-2
Sub-class
1-3
Sub-class
Sub-class description
Data
identifier
for
Seismic Hazard Maps for
Specified Seismic Source
Faults
Scenario fault zone code
Explanation
Fixed value “S”
※
Identifier for method
Fixed value “SLIST”
Identifier for data type
Fixed valued “FAULT”
Sub-class 1
Sub-class 2
Case name of assumed fault
Fault segment code
In case of plural segments※
※Refer to the “Seismic Hazard Maps for Specified Seismic Source Faults－list of assumed
seismic faults”
Example)
S_TONAMI_SLIST-FAULT-KURE1.csv (in case of one segment)
S_ITOSHIZU_SLIST-FAULT-ITOS1_F1.csv (in case of plural segments)
3. Date description
This file is a CSV file and consists of
・
comment lines prefixed by “#”
・
fault trace block
1
・
fault plane data block
・
asperity coordinate block
・
rupture initiation point block
・
data block
Comment lines describe the file version, date and update history. The details are as
follows:
(1) File version
File version is described in a format “# VER. = X.Y”.X means the major version, and Y
means the minor version.
(2) Date
Date is described in a format “# DATE = YYYY-MM-DD”.
(3) Update history
Update history is described in the following format.
# UPDATE
# YYYY-MM-DD Update content 1
# YYYY-MM-DD Update content 2
(4) Fault trace block
Fault trace block describes JLON, JLAT, WLON, WLAT and DEP. The details are in Table 3-1.
Table 3-1
Column No.
01
02
03
04
05
Header name
JLON
JLAT
WLON
WLAT
DEP
Fault trace block (# FTL)
Explanation
Longitude (the Tokyo datum)
Latitude (the Tokyo datum)
Longitude (the Japanese geodetic datum 2000)
Latitude (the Japanese geodetic datum 2000)
Depth(GL-m)※1
※1 The fault trace block shows the positions of the two ends of a fault trace. If a fault
trace consists of lines with different strike angles, the two ends and connecting points
are shown successively. Depth (GL-m) = 0m is shown because the fault trace shows the fault
line on the ground surface.
※2 “NaN” is shown in all of the above five columns because no subduction-zone earthquakes
have fault traces.
(5) Fault plane data block
2
Fault plane data block describes JLON, JLAT, WLON, WLAT and DEP. The details are in Table
3-2.
Table 3-2
Column No.
01
02
03
04
05
Header name
JLON
JLAT
WLON
WLAT
DEP
Fault plane data block (# FLT)
Explanation
Longitude (the Tokyo datum)
Latitude (the Tokyo datum)
Longitude (the Japanese geodetic datum 2000)
Latitude (the Japanese geodetic datum 2000)
Depth(GL-m)※1
※ The fault plane data block shows the positions of the points forming the four corners
of a rectangular fault plane. (Necessary points are shown for non-rectangular fault
plane.) If plural fault planes are set in a segment, # FLT blocks are shown successively
as # FLT1, # FLT2, ...
(6) Asperity coordinate block
Fault plane data block describes JLON, JLAT, WLON, WLAT and DEP. The details are in Table
3-3.
Table 3-3
Column No.
01
02
03
04
05
Asperity coordinate block (# ASP)
Header name
JLON
JLAT
WLON
WLAT
DEP
Explanation
Longitude (the Tokyo datum)
Latitude (the Tokyo datum)
Longitude (the Japanese geodetic datum 2000)
Latitude (the Japanese geodetic datum 2000)
Depth(GL-m)※1
※ The asperity coordinate block shows the positions of the points forming the four corners
of a rectangular asperity on a fault plane. (Necessary points are shown for
non-rectangular asperity.) If plural asperities are set on a fault plane, # ASP blocks
are shown successively as # ASP1, # ASP2, ...
(7) Rupture initiation point block
Rupture initiation point block describes JLON, JLAT, WLON, WLAT and DEP. The details are
in Table 3-4.
Table 3-4
Column No.
01
02
03
04
Header name
JLON
JLAT
WLON
WLAT
Rupture initiation point block (# DES)
Explanation
Longitude (the Tokyo datum)
Latitude (the Tokyo datum)
Longitude (the Japanese geodetic datum 2000)
Latitude (the Japanese geodetic datum 2000)
3
05
DEP
Depth(GL-m)※1
※ Rupture initiation point block shows the position of a rupture initiation point. If there
are plural rupture initiation points in a segment, # DES blocks are shown successively
as # DES1, # DES2, ...
(8) Data block
Data block describes ELM, JLON, JLAT, WLON, WLAT, DEP and FLG. The details are in Table 3-5.
Table 3-5
Column No.
01
02
Header name
ELM
JLON
03
JLAT
04
WLOT
05
WLAT
06
07
DEP
FLG
Data block (# DATA)
Explanation
Element fault No. ※1
Longitude of the center of an element fault
(the Tokyo datum)
Latitude of the center of an element fault
(the Tokyo datum)
Longitude of the center of an element fault
(the Japanese geodetic datum 2000)
Latitude of the center of an element fault
(the Japanese geodetic datum 2000)
Depth of the center of an element fault (GL-m)
With of without asperity ※2
※1 Element fault No. shows the order of the element faults used in the stochastic Green’s
function method.
※2 With or without asperity identifies the number of asperities and the background region.
If plural asperities exist, the first asperity is described as 1, and the second asperity
as 2, and so on. The background region is described as 0.
(9) Example
# VER. = 1.0
# DATE = 2005-04-01
#
# UPDATED
#
#
# FTL
# JLON,JLAT,WLON,WLAT,DEP
137.31522,36.83331,137.31224,36.83662,0.0000
137.13330,36.58331,137.13019,36.58661,0.0000
# FLT
# JLON,JLAT,WLON,WLAT,DEP
4
137.27651,36.85141,137.27982,36.84810,4000.0000
137.09472,36.60143,137.09803,36.60474,4000.0000
136.94430,36.67142,136.94099,36.67473,20000.0000
137.12612,36.92154,137.12281,36.92485,20000.0000
# ASP
# JLON,JLAT,WLON,WLAT,DEP
137.11592,36.68083,137.11291,36.68414,6828.3170
137.20075,36.79748,137.19744,36.80079,6828.3170
137.11873,36.83563,137.11572,36.83894,15313.1610
137.03381,36.71898,137.03050,36.71567,15313.1610
# DES
# JLON,JLAT,WLON,WLAT,DEP
137.07626,36.77732,137.02952,36.78063,15313.1610
# DATA
# ELM,JLON,JLAT,WLON,WLAT,DEP,FLG
1,137.09393,36.61293,137.09062,36.61624,4707.1070,0
:
4. Data format
The format is as follows: (written in C language)
ELM
%d
JLON
%9.5f
JLAT
%9.5f
WLON
%9.5f
WLAT
%9.5f
DEP
%9.4f
FLG
%1c
5