Active fault database of Japan

What's New

2025/09/30

• We have added about 330 locality data around the behavioral segments in the Osaka area updated on June 17, 2025.

2025/08/05

• We have added about 1150 locality data around the behavioral segments updated on February 14, 2025 and other sites all over Japan. (About 250 newly added data and 900 updated data.)

2025/06/17

We have revised 20 behavioral segments shown below, and the fault parameters and traces have been changed accordingly. These segments can be viewd at zoom levels up to 16.

Osaka Prefecture and surrounding areas　20 segments

Behavioral Segments	Main changes	Before	After	Before & After
175-05 Yoshiminedera	Modified
176-01 Ujigawa	Modified
176-02 Takatsuki	Modified
176-03 Baba	Modified
176-04 Minoo	Modified
176-05 Satsukiyama	Modified
176-06 Itami	Modified
176-07 Rokkosan	Modified
176-10 Nishinomiya	Modified
176-11 Kawanishi	Modified
177-01 Otokoyama	Modified
177-02 Katano	Modified
177-03 Ikoma	Modified
178-01 Uemachi	Modified
178-02 Sennan	Modified
178-03 Butsunenjiyama	Modified
182-01 Tondabayashi	Modified
182-02 Kawachinagano	Modified
256-01 Yata	Modified
262-01 Uchihata	Modified

2025/02/14

We have revised 51 behavioral segments shown below. The fault parameters and traces of 49 behavioral segments have been changed. According to the changes of 128-01 Sanageyama-kita, 128-02 Sanage-Sakaigawa, and 128-04 Obu, we have delated 128-03 Takahama. 073-02 Susugaya has been separated from 073-01 Isehara.

Tohoku　14 segments

Behavioral Segments		Before	After
024-01 Hanawa-higashi	Modified
025-01 Noshiro	Modified
026-01 Ukai	Modified
026-02 Hanamaki	Modified
026-03 Kitakami-nishi	Modified
028-01 Tazawako-toho	Modified
029-01 Senya	Modified
029-02 Kanazawa	Modified
029-03 Omoriyama	Modified
030-01 Kawafune	Modified
030-02 Warikurayama	Modified
031-01 Kitaguchi	Modified
032-01 Nakacho	Modified
032-02 Toridame	Modified

Chubu 16 segments

Behavioral Segments		Before	After
116-01 Agi	Shortened
116-02 Okudaira	Modified
116-03 Mitsumoriyama	Modified
116-04 Iinuma	Extended southward
116-05 Sogi	Shortened
124-01 Tegano	Deleted southern traces
124-02 Byobuyama	Extended
124-03 Onogawa	Modified
128-01 Sanageyama-kita	Modified
128-02 Sanage-Sakaigawa	Extended southwestward
128-03 Takahama	Deleted following revisions of surrounding segments
128-04 Obu	Extended southward
129-01 Yokosuka	Modified
129-02 Fukozu	Modified
156-01 Kagiya	Extended
157-01 Taketoyo	Deleted the northwestern traces
303-01 Kasahara	Shortened

Kanto　21 segments

Behavioral Segments		Before	After
061-01 Tokyowan-hokuen	Modified
062-01 Kamogawachikotai-kita	Re-evaluated as an active fault of activity grade C
063-01 Kamogawachikotai-minami	Re-evaluated as an active fault of activity grade C
065-01 Sekiya	Modified
066-01 Takasaki	Modified
066-02 Fukaya	Added southeastern traces
066-03 Ayasegawa	Extended
066-04 Hirai	Added a southeastern trace
068-01 Arakawa	Modified
069-01 Ogose	Modified
073-01 Isehara	Separated 073-02 Susugaya
073-02 Susugaya	New Separated from 073-01 Isehara
074-01 Kurokura	Modified
075-01 Kannawa	Modified
075-03 Shibusawa	Modified
077-01 Kinugasa	Modified
077-02 Kitatake	Deleted southern traces
077-03 Takeyama	Deleted northwestern traces Added a southeastern trace
273-01 Takahagi	Modified
277-01 Minamishitaura	Modified
295-01 Tokyowan-hokubu	Modified

2024/12/20

• We have added about 400 locality data. (About 200 newly added data and 200 updated data.)

2024/8/23

• The positions of 4 behavioral segments have been reconsidered and revised according to Takahiko INOUE and Yukinobu OKAMURA (2010）Explanatory notes of 1:200,000 marine geological map around the northern part of Noto Peninsula．Seamless geoinformation of coastal zone, "Northern coastal zone of Noto Peninsula", Numerical Geological Map S-1, Geological Survey of Japan. Parameters have been changed accordingly. The names of 3 of these behavioral segments have been changed along with the revisions.
  Northern Coastal Area of the Noto Peninsula:329-01 Monzen-oki　329-02 Saruyama-oki(former name Wajima-oki)　329-03 Wajima-oki (former name Machino-oki)　329-04 Suzu-oki (former name Noroshi-oki)　

  Modified Behavioral Segments

Behavioral Segments		before	after
329-01 Monzen-oki	Modified
329-02 Saruyama-oki	Modified Former name Wajima-oki
329-03 Wajima-oki	Modified Former name Machino-oki
329-04 Suzu-oki	Modified Former name Noroshi-oki

2024/6/28

• We have changed the contents in the comment box that would appear when you click on the maps of "Search for behavioral segment" and "Behavioral Segment Outline".

2024/04/26

• We have revised fault parameters and traces of 12 behavioral segments.

  Modified Behavioral Segments

Behavioral Segments		before	after
002-01 Kotanuka	Extended northeastward. Added new traces on the plains.
004-01 Kaiyo	Extended to northeastward and southwestward respctively.
004-02 Yoroushi	Extended southwestward.
027-01 Shizukuishibonchi-seien	Modified the south end.
204-01 Itsukaichi	Extended southward. Added parallel traces.
283-01 Tsutsuga	Extended to northeastward and southwestward respctively.
236-01 Oharako	Extended to northeastward and southwestward respctively.
335-01 Tokusa-Jifuku	Modified northeast and southwest ends respectively.
218-01 Futagawa	Extended northeastward. Traces are refined with reference to the distribution of surface earthquake faults from the 2016 Kumamoto earthquake.
218-02 Mifune	Modified the southwest end. Traces are refined with reference to the distribution of surface earthquake faults from the 2016 Kumamoto earthquake.
218-03 Yatsushiro	Modified the northeast end.
218-04 Ikenohara	Traces are refined based on geomorphological interpretation results.

2021/7/13

• The database has been updated with about 80 locality data.

2016/10/4

• The database has been updated with about 80 locality data.

2015/08/11

• The database has been updated with about 980 locality data.
• We have revised fault parameters and traces of behavioral segments.

  Modified Behavioral Segments

Behavioral Segments		before	after
018-01 Kuromatsunai	Modified
019-01 Hakodate-nishi	Modified
029-01 Sennya	Modified
029-02 Kanazawa	Modified
029-03 Omoriyama	Modified
084-01 Kamishiro	Modified
084-04 Gofukuji	Modified
093-01 Kurehayama	Modified
102-01 Inohana	Modified
102-02 Kosaka	Modified
120-01 Sami	Modified
121-01 Shirakawa	Modified (combined former 121-02)
121-02 Tashirosan	Deleted
136-01 Matsuoka	Modified
136-02 Kanazu	Modified
145-05 Chisato	Modified
145-06 Torido	Modified
148-01 Kaburagi	Modified
148-02 Tsubakizakatoge	Modified
148-04 Kajiya	Modified
148-06 Ayukawaoki	Newly added
153-01 Nosaka	Modified
153-02 Tairikudanagaien	Newly added
166-01 Shiroko-Noma	Modified
168-01 Mikata	Modified
171-03 Nakafuji	Modified
178-01 Uemachi	Modified
178-02 Sennan	Modified
178-03 Butsunenjiyama	Newly added
210-02 Kandamisaki	Modified
210-03 Kandamisaki-oki	Newly added
214-01 Nishiyama	Modified
214-02 Kamatoge	Newly added
214-03 Oshima-oki	Newly added
318-01 Oshima-oki	Deleted
215-01 Kego	Modified
218-05 Minamata-oki	Modified
220-01 Chijiwa	Modified
220-02 Fukae	Modified
231-01 Nokogirizaki-oki	Modified
276-01 Takadaheiya-seien	Modified
278-01 Urazoko-Yanagaseyama	Deleted (devided into 278-02,03)
278-02 Urazoko	Newly added
278-03 Yanagaseyama	Newly added
280-01 Gomura	Modified
280-03 Amino-oki	Newly added
280-04 Amino-oki-kita	Newly added
328-02 Bakkai-oki	Newly added
329-02 Wajima-oki	Newly added
329-03 Machino-oki	Newly added
329-04 Noroshi-oki	Newly added
330-01 Gentatsuse-nishi	Modified
330-02 Gentatsuse-higashi	Modified
337-01 Onishika-oki	Newly added
338-01 Echizennmisaki-oki-kita	Newly added
338-02 Echizenmisaki-oki-minami	Newly added
339-01 Shiraki-Nyu	Newly added
339-02 Nyu-oki	Newly added
340-01 Kyogamisaki-oki	Newly added
340-02 Urashimaguri	Newly added
341-01 Umi	Newly added
342-01 Hinatatoge-Okasagitoge	Newly added
343-01 Koshiki	Newly added
343-02 Kamikoshikijima	Newly added
325-01 Gotanda	Deleted
344-01 Ichiki	Newly added (former 325-01)
344-02 Koshikikaikyo	Newly added
344-03 Fukiagehama-oki	Newly added

2015/3/27

• We have added the layer of earthquake epicenters to the Google maps
   on "Search for behavioral segments".

2013/8/22

• Our web-site address has changed to https://gbank.gsj.jp/activefault/index_e_gmap.html.
• The database has been updated with about 1200 locality data.

2013/4/12-15

• The database was down for maintenence.

2012/02/28

• We have revised fault parameters and traces of behavioral segments.
• We have added the layer of geological map to the Google maps on "Search for behavioral segments".

  Modified Behavioral Segments

Behavioral Segments		before	after
009-01 Furano	Modified
009-02 Rokugo	Modified
015-02 Yufutsu	Modified
024-01 Hanawa-higashi	Modified
033-01 Kitayuri	Modified
035-01 Shinjobonchi	Modified
085-01 Sonekyuryo	Deleted (devided into 085-02,03)
085-02 Fuefuki	Newly added
085-03 Daibosatsurei-nishi	Newly added
108-02 Ogurogawa	Modified
108-03 Tagiri	Deleted (devided into 108-02,04)
108-04 Iida	Modified
192-01 Minato-Honjo	Modified
215-01 Kego	Modified
215-02 Genkaijima	Newly added
218-02 Mifune	Modified
218-03 Yatsushiro	Modified
220-03 Obama	Modified
220-04 Tachibanawan-minami	Newly added
234-01 Muikamachi	Deleted (devided into 234-02,03)
234-02 Koide	Newly added
234-03 Ishiuchi	Newly added
236-01 Oharako	Modified
239-01 Numata-Sunagawa	Deleted (devided into 239-02,03)
239-02 Numata	Newly added
239-03 Ebeotsu	Newly added
264-01 Sarobetsu-kita	Deleted
265-01 Sarobetsu-minami	Deleted
328-01 Sarobetsu	Newly added (combined 264-01,265-01)
268-01 Obanazawa	Modified
329-01 Monzen-oki	Newly added
330-01 Gentatsuse-nishi	Newly added
330-02 Gentatsuse-higashi	Newly added
331-01 Nichinanko	Newly added
332-01 Komachi-Ohdani	Newly added
333-01 Chojagahara-Yoshii	Newly added
334-01 Shimogo	Newly added
335-01 Tokusa-Jifuku	Newly added
336-01 Sakota-Ikumo	Newly added

2011/11/17

• We have released the English version of the Visualization System for Subsurface Structures.

2011/7/8

• The database has been updated with about 700 locality data.

2011/1/31

• We have introduced Google Maps to search behavioral segment.
• We have added the explanation about methods of calculating representative values for behavioral segment parameters.
• We have added the page flow diagram of this database.
• Behavioral segments download(kmz and ESRI shapefile) are not available now. Please contact us.

2010/8/20

• The database has been updated with about 700 locality data.

2010/7/21

• Locality data(location, research method, displacement, paleofaulting event, etc.)is available.

2009/9/11

• Fault parameters download(csv) is available on "Segment Search Result".

2009/07/23

• Behavioral segments download(kmz and ESRI shapefile) are available here.

2008/03/11

• Introduced Google Maps.

2007/03/26

• HomePage update.

2006/12/20

• HomePage was renewed.

2005/12/01

• Publish an English version.