Magnetization Intensity Mapping in and around Izu-Oshima Volcano, Japan.
Magnetization Intensity Mapping in and around Izu-Oshima Volcano, Japan.
复制标题
日本伊豆大岛火山及其周边地区的磁化强度测绘。
DOI：
10.5636/jgg.46.541
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发表时间：
1994
期刊：
影响因子：
--
通讯作者：
T. Nakatsuka
中科院分区：
文献类型：
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作者：
S. Okuma;M. Makino;T. Nakatsuka
伊豆大岛火山是一座岛屿活火山，位于日本东京西南偏南约110公里处。它于1986年爆发，距离最近的一次爆发已有12年。根据火山爆发前和爆发后不久获得的数据，编制了火山内部和周围的精确航磁异常图。磁异常的解释表明，磁化强度的横向变化的火山岩组成的editary。因此，我们利用航空磁异常在火山内部和周围进行了磁化强度测绘，假设磁异常是由与当前地球磁场相同方向磁化的地形引起的，磁化强度仅横向变化
Izu-Oshima Volcano is an active insular volcano and is situated about 110 km SSW of Tokyo, Japan. It erupted in 1986, 12 years after the latest eruption. A precise aeromagnetic anomaly map in and around the volcano was compiled by the data obtained before and soon after the eruption. An interpretation of the magnetic anomalies suggested the lateral variation of magnetization intensity for volcanics which compose the edifice. Therefore, we conducted a magnetization intensity mapping in and around the volcano using the aeromagnetic anomalies, on the assumption that the magnetic anomalies are caused by the terrain magnetized in the same direction as the present Earth's magnetic field and the magnetization intensity varies only laterally