Detecting a mass change inside a volcano by cosmic-ray muon radiography (muography): First results from measurements at Asama volcano, Japan
Detecting a mass change inside a volcano by cosmic-ray muon radiography (muography): First results from measurements at Asama volcano, Japan
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DOI：
10.1029/2009gl039448
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发表时间：
2009-09-02
影响因子：
5.2
通讯作者：
Tsuji, Hiroshi
中科院分区：
文献类型：
--
作者：
Tanaka, Hiroyuki K. M.;Uchida, Tomihisa;Tsuji, Hiroshi
目测和监测火山喷发是最基本的信息。2009年2月2日，日本浅间火山喷发，喷口喷出大量火山灰。自2008年10月12日以来，我们一直在浅间观察到这一活动。为了监测火山喷发，我们使用了宇宙射线Muon射线照相术，这是田中等人最近开发的一种新的火山监测系统。(2009)。我们在喷发期间测量了陨石坑内部的定量质量损失，尽管在火山口下方没有发现任何变化。30780吨的实测值与2009年2月2日观测到的火山灰流量模型计算结果一致。获得的射线图像表明，发生了“沸腾的液体膨胀蒸汽爆炸”，一个古老的熔岩丘的一部分发生了爆炸。这张图片与2009年2月2日喷出的火山灰的分析结果一致。引用：Tanaka，H.K.M.，T.Uchida，M.Tanaka，M.Takeo，J.Oikawa，T.Ohminato，Y.Aoki，E.Koyama，和H.Tsuji(2009)，用宇宙射线Muon射线照相术探测火山内部的质量变化：日本浅间火山地球物理测量的第一个结果。莱特，36，L17302，DOI：10.1029/2009GL039448。
A visual detection and monitoring of volcanic eruptions is the most essential information. In February 2, 2009, Asama volcano, Japan erupted and a large amount of volcanic ash was ejected from the vent. We have observed the activity at Asama since October 12, 2008. For eruption monitoring we used cosmic-ray muon radiography (muography), a new volcano monitoring system recently developed by Tanaka et al. (2009). We measured a quantitative mass loss inside the crater during the eruption event although no changes were found below the crater. The measured value of 30,780 tons is consistent with a model calculation of volcanic ash flow as observed on February 2, 2009. The obtained radiographic image suggests that a "boiling liquid expanding vapor explosion" occurred and a part of an old lava mound was exploded. This picture is consistent with the analytical result of the volcanic ash ejected on February 2, 2009. Citation: Tanaka, H. K. M., T. Uchida, M. Tanaka, M. Takeo, J. Oikawa, T. Ohminato, Y. Aoki, E. Koyama, and H. Tsuji (2009), Detecting a mass change inside a volcano by cosmic-ray muon radiography (muography): First results from measurements at Asama volcano, Japan, Geophys. Res. Lett., 36, L17302, doi: 10.1029/2009GL039448.