Long-range acoustic observations of the Eyjafjallajokull eruption, Iceland, April-May 2010

被引：49

作者：

Matoza, Robin S. ^{[1
]}

Vergoz, Julien ^{[1
]}

Le Pichon, Alexis ^{[1
]}

Ceranna, Lars ^{[2
]}

Green, David N. ^{[3
]}

Evers, Laslo G. ^{[4
,5
]}

Ripepe, Maurizio ^{[6
]}

Campus, Paola ^{[6
]}

Liszka, Ludwik ^{[7
]}

Kvaerna, Tormod ^{[8
]}

Kjartansson, Einar ^{[9
]}

Hoskuldsson, Armann ^{[10
]}

机构：

[1] CEA DAM DIF, F-91297 Arpajon, France

[2] BGR, D-30655 Hannover, Germany

[3] AWE Blacknest, Reading RG7 4RS, Berks, England

[4] Royal Netherlands Meteorol Inst, NL-3730 AE De Bilt, Netherlands

[5] Delft Univ Technol, Fac Aerosp Engn, Delft, Netherlands

[6] Univ Florence, Dipartimento Sci Terra, I-50121 Florence, Italy

[7] Swedish Inst Space Phys, SE-90187 Umea, Sweden

[8] NORSAR, N-2007 Kjeller, Norway

[9] Iceland Meteorol Off, IS-150 Reykjavik, Iceland

[10] Univ Iceland, Inst Earth Sci, IS-101 Reykjavik, Iceland

来源：

GEOPHYSICAL RESEARCH LETTERS | 2011年 / 38卷

关键词：

INFRASOUND;

D O I：

10.1029/2011GL047019

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

The April-May 2010 summit eruption of Eyjafjallajokull, Iceland, was recorded by 14 atmospheric infrasound sensor arrays at ranges between 1,700 and 3,700 km, indicating that infrasound from modest-size eruptions can propagate for thousands of kilometers in atmospheric waveguides. Although variations in both atmospheric propagation conditions and background noise levels at the sensors generate fluctuations in signal-to-noise ratios and signal detectability, array processing techniques successfully discriminate between volcanic infrasound and ambient coherent and incoherent noise. The current global infrasound network is significantly more dense and sensitive than any previously operated network and signals from large volcanic explosions are routinely recorded. Because volcanic infrasound is generated during the explosive release of fluid into the atmosphere, it is a strong indicator that an eruption has occurred. Therefore, long-range infrasonic monitoring may aid volcanic explosion detection by complementing other monitoring technologies, especially in remote regions with sparse ground-based instrument networks. Citation: Matoza, R. S., et al. (2011), Long-range acoustic observations of the Eyjafjallajokull eruption, Iceland, April-May 2010, Geophys. Res. Lett., 38, L06308, doi:10.1029/2011GL047019.

引用

页数：5

共 31 条

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