Update history

April 09, 2024

The hypocenters of the JMA catalog in 2023 have been updated.

August 10, 2023

The hypocenters of the JMA catalog in 2022 have been updated.

17 June 2022

SHmax azimuth data has added on the map. For the detail, please check the articles.
Uchide, T., Shiina, T., and Imanishi, K. (2022) Stress map of Japan: Detailed nationwide crustal stress field inferred from focal mechanism solutions of numerous microearthquakes. Journal of Geophysical Research Solid Earth. 127, e2022JB024036. doi:10.1029/2022JB024036
Uchide, T., Shiina, T., and Imanishi, K. (2022) Digital data of crustal stress map and focal mechanism solutions of microearthquakes for inland areas of Japan. Open-File Report of the Geological Survey of Japan, AIST, no. 738, 6p.

11 April 2022

The hypocenters of the JMA catalog in 2021 were added.

25 May 2021

SHmax azimuth data has added on the map. For the detail, please check the articles.
IMANISHI Kazutoshi, UCHIDE Takahiko, SHIINA Takahiro, MATSUSHITA Reiken and NAKAI Misato (2021) Construction of Crustal Stress Map in Chugoku Region, western Japan. Bulletin of the Geological Survey of Japan, vol. 72 (1), p. 23–40
Imanishi, K., Uchide, T., Shiina, T., Matsushita, R., Nakai, M. (2021) Crustal Stress Map Datain Chugoku Region, western Japan. Open-File Report of the Geological Survey of Japan, AIST, no.720, 4p.

5 February 2021

The hypocenters of the JMA catalog in 2020 were added.

10 July 2019

SHmax azimuth data has added on the map. For the detail, please check the articles.
Kazutoshi Imanishi, Takahiko Uchide, Makiko Ohtani, Reiken Matsushita and Misato Nakai (2019) Construction of the Crustal Stress Map in the Kanto Region, central Japan. Bull. Geol. Surv. Japan, vol. 70 (3), p.273–298.
Imanishi, K., Uchide, T., Ohtani, M., Matsushita, R., Nakai, M. (2019) Crustal Stress Map in Kanto Region, central Japan. Open-File Report of the Geological Survey of Japan, AIST, no. 681, p. 1-4.

4 July 2019

Persons in charge have been revised.

26 January 2018

The annual hypocenters between 1923 and 2017, Seamless Digital Geological Map of Japan (1:200,000), anisotopy data (7 new articles and 396 new records), azimuths of P-axis whose plunges are less than 30° (2060 records) and focal mechanism solutions shallower than 20km depth (4060 records) have recently been added to be layered on the map.GSI Maps and a plain grayscale map can also be chosen as one of the base maps.

14 April 2014

English version released. Updated stress measurement data.
According to reorganisation of GSJ, Seismotectonics Research Group of Institute of Earthquake and Volcano Geology manages this database.

4 September 2013

Revised some parts of text.

30 August 2013

Stress measurement : Able to classify diplayed lines by methods and depths on the map . Please click the menu "Classified lines by methods and depths".
Anisotropy : Able to display spots where azimuths are unknown. Please check the menu "Azimuths unknown".

20 August 2013

Renewal version released. Google Maps is used for plotting data and the URL has been changed. There are no change in the database itself.

26 May 2009

According to reorganization of GSJ, Seismogenic Process Research Team of Active Fault and Earthquake Research Center manages this database.

14 March 2006

Crustal stress database released.