A forecasting procedure for plate boundary earthquakes based on sequential data assimilation

Takane Hori, Mamoru Hyodo, Ryoko Nakata, Shin'ichi Miyazaki, Yoshiyuki Kaneda

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)

Abstract

A forecasting procedure is proposed for plate boundary earthquakes in subduction zones. It is based on spatio-temporal variation in slip velocity on the plate interface, which causes interplate earthquakes. Model outputs are not only information about the occurrence of great earthquakes (time, place, and magnitude) but also information about the physical state evolution that causes earthquakes. To overcome the difficulty in forecasting earthquake generation resulting from uncertainty both in the physical model and in the observation data, we introduce a type of sequential data assimilation. In this method, we compare observed crustal deformation data to simulations of several great interplate earthquake generation cycles. We are currently constructing a prototype, applying this forecasting procedure to the Nankai Trough, Southwest Japan, where great interplate earthquakes have occurred and are anticipated.

Original languageEnglish
Pages (from-to)94-102
Number of pages9
JournalOceanography
Volume27
Issue number2
DOIs
Publication statusPublished - 2014 Jun 1
Externally publishedYes

ASJC Scopus subject areas

  • Oceanography

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