著者
小山 真人
出版者
公益社団法人 東京地学協会
雑誌
地學雜誌 (ISSN:0022135X)
巻号頁・発行日
vol.111, no.2, pp.222-232, 2002 (Released:2009-11-12)
被引用数
4 or 0

Previous studies have reported many examples of possible mechanical coupling between volcanic unrests and large earthquakes, which occurred around the volcano. This paper reviews these studies and reorganizes the types of mechanical coupling into the following five cases (cases A-1, A-2, B-1, B-2, and C) and 10 mechanisms : In case A-1, in which a large earthquake triggers activation of a volcano, the following four mechanisms can explain their coupling : (A-1-1) an increase in compressional stress, which was produced by earthquake source faulting, squeezes magma up to the surface; (A-1-2) an increase in differential stress (or magma pressure), which was produced by earthquake source faulting, promotes dike intrusion; (A-1-3) increase in tensional stress, which was produced by earthquake source faulting, triggers gas bubbling in magma; and, (A-1-4) dynamic stress change, which was associated with seismic wave, triggers gas bubbling in magma.In case A-2, in which a large earthquake triggers deactivation of a volcano, the following three mechanisms can explain their coupling : (A-2-1) increase in compressional stress, which was produced by earthquake source faulting, chokes a vent or prevents gass bubbling in magma; (A-2-2) decrease in differential stress (or magma pressure), which was produced by earthquake source faulting, prevents dike intrusion; and, (A-2-3) increase in tensional stress, which was produced by earthquake source faulting, drains magma back toward a chamber.In case B-1, in which a volcanic unrest triggers a large earthquake, coupling can be explained by mechanism B-1-1 : change in stress, which was produced by dike intrusion (or pressure change in a magma chamber), promotes earthquake source faulting. In case B-2, in which a volcanic unrest prevents a large earthquake, coupling can be explained by mechanism B-2-1 : change in stress, which was produced by dike intrusion (or pressure change in a magma chamber), prevents earthquake source faulting.In case C, in which a change in plate motion causes a stress change and then triggers (or prevents) a large earthquake (or a volcanic unrest), coupling can be explained by mechanism C : stress change promotes (or prevents) earthquake source faulting or ascending / intrusion of magma.

言及状況

外部データベース (DOI)

Twitter (61 users, 69 posts, 75 favorites)

噴火と地震の連動問題。2002年頃までの研究レビューは小山(2002)https://t.co/k6Rhkxgcxn その後は鵜川(2013)https://t.co/5gPGpKJHHW.…
参考:火山で生じる異常現象と近隣地域で起きる大地震の関連性 https://t.co/LzjbucZhKz
311直後、3/15に発生した富士山付近のM6.4 http://t.co/DKpOpSCJH6は多分火山の先生達はこんな事を想像した 強震動にともなう動的歪変化によるマグマ発泡の促進←例えばサイダーの入っている瓶を振った状態 https://t.co/7V3UAqRQjX
発見!こんなところに早川先生のアイコン「火山君」の親戚! 震源断層君も親族? 小山先生のレビュー https://t.co/7V3UAqRQjX ←P228
参考:火山で生じる異常現象と近隣地域で起きる大地震の関連性(PDF)https://t.co/Pbzfa1KCF3
あとで読む RT @usa_hakase: 参考:火山で生じる異常現象と近隣地域で起きる大地震の関連性 その事例とメカニズムにかんするレビュー https://t.co/Ucp3myV9IW
参考:火山で生じる異常現象と近隣地域で起きる大地震の関連性 その事例とメカニズムにかんするレビュー https://t.co/Pbzfa1KCF3

収集済み URL リスト

https://www.jstage.jst.go.jp/article/jgeography1889/111/2/111_2_222/_pdf (58)

https://www.jstage.jst.go.jp/article/jgeography1889/111/2/111_2_222/_article/references/-char/ja/ (5)