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北海道大学地球物理学研究報告 = Geophysical bulletin of Hokkaido University >
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火山岩塊の運動再考(2)- 放出火山岩塊の空気抵抗と爆発主軸の傾き効果 -

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Title: 火山岩塊の運動再考(2)- 放出火山岩塊の空気抵抗と爆発主軸の傾き効果 -
Other Titles: Reconsideration of volcanic block kinematics (2)-Air resistance to volcanic blocks and inclination effect of explosion principal axis -
Authors: 鈴木, 建夫1 Browse this author
新井田, 清信2 Browse this author
西田, 泰典3 Browse this author
大島, 弘光4 Browse this author
室伏, 誠5 Browse this author
Authors(alt): SUZUKI, Takeo1
NIIDA, Kiyoaki2
NISHIDA, Yasunori3
OSHIMA, Hiromitsu4
Issue Date: 15-Mar-2007
Publisher: 北海道大学大学院理学研究院自然史科学部門(地球物理学)
Journal Title: 北海道大学地球物理学研究報告
Journal Title(alt): Geophysical bulletin of Hokkaido University
Volume: 70
Start Page: 67
End Page: 83
Abstract: The present authors pointed out, in the last paper, a mistake in the equation of motion for volcanic blocks. Reliable assumption of the air resistance to the blocks is required for accurate estimation of initial velocity of volcanic blocks. However, little attention has been given to the point. This paper organizes the problems about the estimation of the air resistance and proposes a new method of the estimation. Also this paper organizes the effect of factors on the distribution of volcanic blocks. Model calculations revealed the effect of the atmospheric air density cannot be ignored. For the effect of explosion principal axis on the distribution of volcanic blocks, this paper proposes an extended equation which volcanic blocks eject to all the directions around the crater.
Type: bulletin (article)
Appears in Collections:北海道大学地球物理学研究報告 = Geophysical bulletin of Hokkaido University > 第70号

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