Effects of small asperities on migration of slow-earthquakes along trench direction of subduction plate boundary: Investigation through a 3D numerical simulation

Keisuke Ariyoshi, Takane Hori, Yoshiyuki Kaneda, Jean Paul Ampuero, Toru Matsuzawa, Ryota Hino, Akira Hasegawa

Research output: Chapter in Book/Report/Conference proceedingChapter

Abstract

In many subduction zones in the world, low-frequency tremors and earthquakes have been recognized at a depth of about 30 km. They occur independently or migrate along the trench direction of the plate interface. We investigate behaviors of their patterns through numerical simulation, by varying frictional properties of the plate interface. Our simulation results indicate that a chain reaction of small asperities can reproduce the migration process in terms of the migration speedand the slip velocity, under the condition that characteristicslip distance is larger than 0.4 mm.

Original languageEnglish
Title of host publicationAdvances in Geosciences
Subtitle of host publicationVolume 26: Solid Earth (SE)
PublisherWorld Scientific Publishing Co.
Pages47-54
Number of pages8
ISBN (Electronic)9789814355391
ISBN (Print)9814355380, 9789814355384
DOIs
Publication statusPublished - 2011 Jan 1

ASJC Scopus subject areas

  • Earth and Planetary Sciences(all)
  • Engineering(all)
  • Environmental Science(all)

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    Ariyoshi, K., Hori, T., Kaneda, Y., Ampuero, J. P., Matsuzawa, T., Hino, R., & Hasegawa, A. (2011). Effects of small asperities on migration of slow-earthquakes along trench direction of subduction plate boundary: Investigation through a 3D numerical simulation. In Advances in Geosciences: Volume 26: Solid Earth (SE) (pp. 47-54). World Scientific Publishing Co.. https://doi.org/10.1142/9789814355391_0005