DOI: 10.1016/j.jag.2013.06.006
Scopus记录号: 2-s2.0-84897889742
论文题名: Deformation and fault parameters of the 2005 Qeshm earthquake in Iran revisited: A Bayesian simulated annealing approach applied to the inversion of space geodetic data
作者: Amighpey M ; , Voosoghi B ; , Motagh M
刊名: International Journal of Applied Earth Observation and Geoinformation
ISSN: 15698432
出版年: 2014
卷: 26, 期: 1 起始页码: 184
结束页码: 192
语种: 英语
英文关键词: Global optimization
; InSAR
; Simulated annealing
; Source parameters of earthquake
Scopus关键词: aftershock
; coseismic process
; data inversion
; deformation mechanism
; earthquake event
; earthquake mechanism
; fault zone
; geodetic datum
; parameterization
; seismicity
; simulated annealing
; source parameters
; strike-slip fault
; Iran
英文摘要: The estimation of earthquake source parameters using an earth surface displacement field in an elastichalf-space leads to a complex nonlinear inverse problem that classic inverse methods are unable to solve.Global optimization methods such as simulated annealing are a good replacement for such problems.Simulated annealing is analogous to thermodynamic annealing where, under certain conditions, thechaotic motions of atoms in a melt can settle to form a crystal with minimal energy. Following this, theunknown model parameters are analogous to the molecules of a molten solid whose chaotic motiongradually ceases during cooling, and the state corresponding to the global minimum of the cost functionbecomes highly probable at a very low temperatures.Source parameters of the 2005 Qeshm earthquakes have already been estimated using various studies,including seismicity, the earth's surface deformation field, and rupture characteristics. Each of thesestudies proposes different mechanisms for the earthquakes. In this study, source parameters of the 2005Qeshm earthquake and its main aftershock are determined with their precision by applying simulatedannealing optimization in a Bayesian framework using a coseismal deformation field derived from Envisatradar interferometry. The results agree with surface ruptures and the proposed activation of the Qeshmand a NW-SE faults during main shock and main aftershock. This estimate indicates a reverse-slip of88 ± 11 cm on the Qeshm fault and 38 ± 12 cm of strike-slip on the NW-SE fault. © 2013 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/79742
Appears in Collections: 气候变化事实与影响
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作者单位: Faculty of Geodesy and Geomatics Engineering, K. N. Toosi University of Technology (KNTU), Valiasr Street, Mirdamad Conjunction, Tehran, Iran; Helmholtz Center Potsdam, GFZ German Research Center for Geosciences, 14473 Potsdam, Germany
Recommended Citation:
Amighpey M,, Voosoghi B,, Motagh M. Deformation and fault parameters of the 2005 Qeshm earthquake in Iran revisited: A Bayesian simulated annealing approach applied to the inversion of space geodetic data[J]. International Journal of Applied Earth Observation and Geoinformation,2014-01-01,26(1)