Premium
A possible foreshock of a future large earthquake near Odawara, center Japan
Author(s) -
Ishida Mizuho,
Kikuchi Masayuki
Publication year - 1992
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/92gl01503
Subject(s) - foreshock , seismology , geology , seismogram , stress field , aftershock , earthquake prediction , physics , finite element method , thermodynamics
The 1990 Odawara earthquake ( M 5.1) occurred within an area where a large earthquake of M 7 class is expected to occur in the future. This area (the “Odawara area”) has been seismically quiescent since 1933. Analysis of near‐field broadband seismograms and the extent of fore‐ and after‐shocks suggests that the 1990 event had a high stress drop and that the Odawara area remains in a state of high stress which could potentially cause a large earthquake.