TephraDB_Prototype_ver1.4

This is the updated tephra fall distribution map dataset for assessing tephra fall hazards (thickness in mm) in Japan. This database was created using the database of Suto et al. (2007) (https://www.jstage.jst.go.jp/article/bullgsj/58/9-10/58_261/_article/-char/ja/) with ArcGIS.

This version is a revised version of 1.3. An error in thickness data was found in Unzen_1991_6_8 in ver 1.2 and 1.3. Please use this version instead of older versions. We have confirmed that this error does not affect the discussion in Uesawa et al. (2022).

The exact method is available in Uesawa et al. (2022) appliedvolc.biomedcentral.com/articles/10.1186/s13617-022-00126-x. Please find the scripts to create the hazard curve at https://github.com/s-uesawa/Prototype-TephraDB-Japan.

The coordinate ranges handled in this database are as follows:125E/150E/25N/47N (JGD2000)

Acknowledgments: Comments from Dr. K. Komura@CRIEPI were helpful.