Modeling Volcanic Eruption Parameters by Near-Source Internal Gravity Waves.
Modeling Volcanic Eruption Parameters by Near-Source Internal Gravity Waves.
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DOI：
10.1038/srep36727
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发表时间：
2016-11-10
影响因子：
4.6
通讯作者：
Marchetti E
中科院分区：
文献类型：
--
作者：
Ripepe M;Barfucci G;De Angelis S;Delle Donne D;Lacanna G;Marchetti E
火山爆发会向大气中释放大量的热气和火山灰，在火山口上方几公里处形成羽流，这可能对距离火山源几千公里的人类健康和航空造成严重威胁。然而，最精确的大气模型和喷发羽流动力学需要输入参数，如喷射阶段的持续时间和喷发的总质量，以限制散布在大气中的灰的数量，并有效地评估相关的危害。大量火山灰的突然喷发会扰乱整个大气层的平衡，引发远低于声波频率的振荡，甚至更长的重力波周期。我们表明，大气重力振荡引起的火山爆发和压力传感器记录可以模拟为一个紧凑的源，代表火山爆发的速度质量。我们证明了使用重力波推导喷发源参数的可行性，如持续时间的注射和总爆发质量与约束羽流和灰扩散模型中的直接应用。
Volcanic explosions release large amounts of hot gas and ash into the atmosphere to form plumes rising several kilometers above eruptive vents, which can pose serious risk on human health and aviation also at several thousands of kilometers from the volcanic source. However the most sophisticate atmospheric models and eruptive plume dynamics require input parameters such as duration of the ejection phase and total mass erupted to constrain the quantity of ash dispersed in the atmosphere and to efficiently evaluate the related hazard. The sudden ejection of this large quantity of ash can perturb the equilibrium of the whole atmosphere triggering oscillations well below the frequencies of acoustic waves, down to much longer periods typical of gravity waves. We show that atmospheric gravity oscillations induced by volcanic eruptions and recorded by pressure sensors can be modeled as a compact source representing the rate of erupted volcanic mass. We demonstrate the feasibility of using gravity waves to derive eruption source parameters such as duration of the injection and total erupted mass with direct application in constraining plume and ash dispersal models.
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影响因子：
5.2
作者：
KANAMORI, H;MORI, J
通讯作者：
MORI, J
影响因子：
5.2
作者：
WIDMER, R;ZURN, W
通讯作者：
ZURN, W
DOI：
10.1144/m39.9
发表时间：
2014-01-01
期刊：
ERUPTION OF SOUFRIERE HILLS VOLCANO, MONTSERRAT FROM 2000 TO 2010
影响因子：
--
作者：
Delle Donne, D.;Ripepe, M.;Stewart, R.
通讯作者：
Stewart, R.
影响因子：
56.9
作者：
DONN, WL;BALACHANDRAN, NK
通讯作者：
BALACHANDRAN, NK
DOI：
10.1111/j.1365-246x.1985.tb06412.x
发表时间：
1985-01-01
期刊：
GEOPHYSICAL JOURNAL OF THE ROYAL ASTRONOMICAL SOCIETY
影响因子：
--
作者：
MIKUMO, T;BOLT, BA
通讯作者：
BOLT, BA