Development and assessment of real-time fault model estimation routines in the GEONET real-time processing system

Satoshi Kawamoto, Kohei Miyagawa, Toshihiro Yahagi, Masaru Todoriki, Takuya Nishimura, Yusaku Ohta, Ryota Hino, Satoshi Miura

Research output: Chapter in Book/Report/Conference proceedingConference contribution

8 Citations (Scopus)

Abstract

The recent development of Global Navigation Satellite Systems (GNSS) and communication infrastructure provides real-time displacement data, enabling the real-time estimation of coseismic fault models for large earthquakes and the potential improvement of tsunami warning systems. In this paper, we present two real-time coseismic fault model estimation procedures implemented in the GEONET real-time processing system: a single rectangular fault model and a slip distribution model on the subducting plate interface. We evaluate the fault modeling procedures for two past large interplate earthquakes: the 2003 Tokachioki earthquake and the 2011 Tohoku earthquake. Furthermore, we also evaluate a potential large interplate earthquake along the Nankai trough based on simulated GPS time series. We obtained reasonable coseismic simple rectangular fault models for the past two large earthquakes. In contrast, the simulated interplate event along the Nankai trough clearly indicates the great advantage of estimation of the coseismic slip distribution on the plate interface. These results clearly show that reliable estimation of the coseismic fault model and/or slip distribution on the subducting plate interface will be possible in Japan based on the real-time GNSS data. This result will contribute to a more reliable tsunami early warning system.

Original languageEnglish
Title of host publicationInternational Symposium on Geodesy for Earthquake and Natural Hazards (GENAH) - Proceedings of the International Symposium on Geodesy for Earthquake and Natural Hazards (GENAH)
EditorsManabu Hashimoto
PublisherSpringer-Verlag
Pages89-96
Number of pages8
ISBN (Print)9783319397672
DOIs
Publication statusPublished - 2017 Jan 1
EventProceedings of the International Symposium on Geodesy for Earthquake and Natural Hazards, GENAH 2014 - Matsushima, Japan
Duration: 2014 Jul 222014 Jul 26

Publication series

NameInternational Association of Geodesy Symposia
Volume145
ISSN (Print)0939-9585

Other

OtherProceedings of the International Symposium on Geodesy for Earthquake and Natural Hazards, GENAH 2014
CountryJapan
CityMatsushima
Period14/7/2214/7/26

Keywords

  • Earthquake early warning
  • Fault model inversion
  • GNSS
  • GPS
  • Real-time kinematic (RTK) positioning

ASJC Scopus subject areas

  • Computers in Earth Sciences
  • Geophysics

Fingerprint Dive into the research topics of 'Development and assessment of real-time fault model estimation routines in the GEONET real-time processing system'. Together they form a unique fingerprint.

  • Cite this

    Kawamoto, S., Miyagawa, K., Yahagi, T., Todoriki, M., Nishimura, T., Ohta, Y., Hino, R., & Miura, S. (2017). Development and assessment of real-time fault model estimation routines in the GEONET real-time processing system. In M. Hashimoto (Ed.), International Symposium on Geodesy for Earthquake and Natural Hazards (GENAH) - Proceedings of the International Symposium on Geodesy for Earthquake and Natural Hazards (GENAH) (pp. 89-96). (International Association of Geodesy Symposia; Vol. 145). Springer-Verlag. https://doi.org/10.1007/1345_2015_49