Strain concentration zone along the volcanic front derived by GPS observations in NE Japan arc

Satoshi Miura, Toshiya Sato, Akira Hasegawa, Yoko Suwa, Kenji Tachibana, Satoshi Yui

研究成果: Article査読

49 被引用数 (Scopus)

抄録

A nationwide GPS array with more than 1,000 permanent stations operated by the Geographical Survey Institute of Japan, has provided many invaluable deformation data such as co- and post-seismic, volcanic, and ongoing secular deformations in the Japanese islands. Based on daily coordinate data of the GEONET stations together with results from a regional network operated by Tohoku University, we derived a map of the strain rate distribution in NE Japan showing that there exists a notable strain concentration zone of EW contraction along the Volcanic Front. The area demonstrates active seismicity including some disastrous earthquakes. Recent seismic tomography studies have revealed the existence of inclined seismic low-velocity zones (LVZ) at depths shallower than ∼150 km in the mantle wedge sub-parallel to the subducted slab. The inclined LVZ reaches the Moho right beneath the Volcanic Front, indicating that the formation of the strain concentration zone is closely related to the rheological structure of the island-arc system.

本文言語English
ページ(範囲)1347-1355
ページ数9
ジャーナルearth, planets and space
56
12
DOI
出版ステータスPublished - 2004

ASJC Scopus subject areas

  • 地質学
  • 宇宙惑星科学

フィンガープリント

「Strain concentration zone along the volcanic front derived by GPS observations in NE Japan arc」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル