Active Fault Map in Urban Areas officially announced for Rokko-Awaji Shima Fault Zone/ Kego Fault Zone/ Mitoke-Kyoto Nishiyama Fault Zone
On November 1st, 2014, Geospatial Information Authority of Japan (GSI) officially announced seven new Active Fault Maps in Urban Areas, covering “SUMOTO”, “YURA” and “NARUTO KAIKYO” (in the Rokko-Awaji Shima Fault Zone and its vicinity); “FUKUOKA (Revised Edition)”, “AMAGI” and “SEFURI SAN” (in the Kego Fault Zone and its vicinity); and “SONOBE” (in the Mitoke-Kyoto Nishiyama Fault Zone and its vicinity).
After the Great Hanshin-Awaji Earthquake in January 1995, the Geospatial Information Authority of Japan (GSI) developed information such as detailed positioning and distribution of active faults related landform for the main active fault zones, particularly with probability of extensive seismic damage, in and adjacent to urban areas (including mountainous areas) across Japan from FY 1995. This information is made available to the public as the “1:25,000 scale Active Fault Map in Urban Areas”.
Seven Maps newly available
The following seven Active Fault Maps in Urban Areas are newly announced now. The results from each survey and the active faults shown on each map are provided in the Appendix and Attachments 1 to 8.
What is the Active Fault Map in Urban Areas
GSI developed the Active Fault Map in Urban Areas through extracting active faults by aerial photo-interpretation, etc. and compiling detailed locations of faults and directionality of slip etc. in Digital Topographic Maps 25000. These maps are expected to serve as basic materials for disaster prevention/reduction and suitable regional development/conservation implemented by national administrative organ and local governments, such as in the production of regional disaster prevention plans and hazard maps.
Access to the Maps
The Active Fault Map in Urban Areas can be browsed on GSI homepage. For further details, please see the following webpage.
(*The Active Fault Map in Urban Areas is available only on Japanese-language webpage.)