Modelling ground deformation caused by oscillating overpressure in a dyke conduit at Soufrière Hills Volcano, Montserrat
Modelling ground deformation caused by oscillating overpressure in a dyke conduit at Soufrière Hills Volcano, Montserrat
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模拟蒙特塞拉特苏弗里埃尔山火山堤坝管道中振荡超压引起的地面变形
DOI:
10.1016/j.tecto.2008.10.021
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发表时间:
2009
期刊:
影响因子:
2.9
通讯作者:
Hautmann S
中科院分区:
文献类型:
--
作者:
Hautmann S
A dyke conduit has been shown to be a realistic model for the shallow magmatic feeder system for the dome forming eruption at Soufrière Hills Volcano, Montserrat. Here we use a three-dimensional Finite Element model to examine the ground deformation that can be expected due to the pressurization of a dyke conduit. We find that the generated deformation has a bilateral symmetry with nearly no displacement in the direction of dyke strike, and a maximal ground deformation about 1 km away from the vent in the perpendicular direction. Resultant surface deformation is mainly triggered by the upper part of the feeder system, where the dyke opens into a cylindrical conduit. We apply our deformation model to investigate tilt data collected in 1997 in order to infer the orientation of the dyke. We obtain a best-fit for a NNW–SSE trending dyke, which matches observations of the ground displacement field obtained by differential GPS and the alignment of main structural geologic features of southern Montserrat.
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DOI:
--
发表时间:
2006
期刊:
影响因子:
--
作者:
J. Trofimovs;L. Amy;G. Boudon;C. Deplus;E. E. Doyle;N. Fournier;M. Hart;J. Komorowski;A. Friant;E. J. Lock;C. Pudsey;G. Ryan;R. Sparks;P. Talling
通讯作者:
P. Talling
影响因子:
2.7
作者:
G. Wadge;M. C. Isaacs
通讯作者:
M. C. Isaacs
影响因子:
2.9
作者:
T. Druitt;E. Calder;P. Cole;L. Ritchie;R. S. J. Sparks;B. Voight
通讯作者:
B. Voight
影响因子:
2.9
作者:
D. Pollard;P. T. Delaney;W. Duffield;E. Endo;A. Okamura
通讯作者:
A. Okamura
DOI:
10.1144/gsl.mem.2002.021.01.13
发表时间:
2002-01-01
期刊:
ERUPTION OF SOUFRIERE HILLS VOLCANO, MONTSERRAT, FROM 1995 TO 1999
影响因子:
--
作者:
Druitt, TH;Young, SR;Voight, B
通讯作者:
Voight, B