Deep structure of the northeastern Japan arc and its relationship to seismic and volcanic activity

Akira Hasegawa, Dapeng Zhao, Shuichiro Hori, Akira Yamamoto, Shigeki Horiuchi

研究成果: Article査読

137 被引用数 (Scopus)

抄録

Evidence for possible deep-seated magmatic activity beneath northeastern Japan can be obtained from seismic observations. Tomographic inversions of P-wave velocity data show low-velocity zones distributed in the crust and upper mantle beneath active volcanoes. In or around these zones, anomalously low-frequency micro-earthquakes, perhaps caused by magmatic activity, are found at depths of 25-40 km; distinct S-wave reflectors, corresponding to the upper surfaces of magma bodies, are found at depths of 10-18 km. Large crustal earthquakes also occur around the low-velocity zones. These observations reveal the distribution of magma reservoirs at depths and elucidate its relation with shallow seismicity beneath volcanic arcs.

本文言語English
ページ(範囲)683-689
ページ数7
ジャーナルNature
352
6337
DOI
出版ステータスPublished - 1991 1 1
外部発表はい

ASJC Scopus subject areas

  • General

フィンガープリント 「Deep structure of the northeastern Japan arc and its relationship to seismic and volcanic activity」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