缅甸Yangon及其周边地区地震危险性评估
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摘要
用概率统计方法对仰光(Yangon)及其周边地区的地震危险性进行了评估研究。根据常用的复现法和最大量级值的不同,将地震源区域划分为9个不同的区域。本研究区域为13°37′N~20°2′N、93°35′E~99°5′E,并给出了50 a内地震发生可能性超过2%和10%的地震危险性分布图以及峰值加速度值。
This paper investigated the seismic hazard assessment for the Yangon and its surrounding areas using the probabilistic approach.The seismic sources are defined spatially in nine source zones,characterized by a commonly used recurrence law and a maximum magnitude value.The present study area is situated between the latitudes of N 13°37′ and N 20°2′ and the longitudes of E 93°35′ and E 99°5′.The study areas of nine source zones are centered at Yangon with the radius about 200 km.The seismic hazard maps for Yangon and its surrounding areas including the peak ground acceleration values for 2% and 10% exceedance in 50 years were provided in this study.
This paper investigated the seismic hazard assessment for the Yangon and its surrounding areas using the probabilistic approach.The seismic sources are defined spatially in nine source zones,characterized by a commonly used recurrence law and a maximum magnitude value.The present study area is situated between the latitudes of N 13°37′ and N 20°2′ and the longitudes of E 93°35′ and E 99°5′.The study areas of nine source zones are centered at Yangon with the radius about 200 km.The seismic hazard maps for Yangon and its surrounding areas including the peak ground acceleration values for 2% and 10% exceedance in 50 years were provided in this study.
引文
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[2]Boore D M,Joyner W B,Fumal T E.Equations forEstimating Horizontal Response Spectra and Peakacceleration from Western North American Earth-quakes:A Summary of Recent Work[J].Seismo-logical Research Letters,1997,68:128-153
[3]Swe T L.Engineering Geology of Taikkyi-TaungnioRoad Construction Project[R].Feasibility Report,Directorate of Military Engineers,2002
[4]Htun K.Sedimentology and Petrography of South-Western Part of Thadugan[D].Yangon:Yangon U-niversity,1996
[5]Swe T W.Water Well Drilling Report[R].AhlinYaung Geotechnical and Engineering Services CoLtd,Mymmar,1998
[6]Petersen M D,Dewey J,Hartzell S,et al.Probabi-listic Seismic Hazard Analysis for Sumatra,Indone-sia and Across the Southern Malaysian Peninsula[J].Tectonophysics,2004,390:141-158
[7]Boore D M,Atkinson G M.Boore-Atkinson Provi-sional NGA Empirical Ground-motion Model for theAverage Horizontal Component of PGA,PGV andSA at Spectral Periods of 0.05,0.1,0.2,0.3,0.5,1,2,3,4,and 5 Seconds[R].Report of NextGeneration Attenuation(NGA)Models,PacificEarthquake Engineering Research Center,2006
[8]Boore D M.Equations for Estimating HorizontalResponse Spectra and Peak Acceleration from West-ern North American Earthquakes:A Summary ofRecent Work[J].Seismological Research Letters,2005,76:368-369
[9]Anderson J G,Brune J N,Anooshehpoor R,et al.New Ground Motion Data and Concepts in SeismicHazard Analysis[J].Current Science,2000,79(9):1 278-1 290
[10]吴云,孙建中,乔学军,等.GPS在现今地壳运动与地震监测中的初步应用[J].武汉大学学报.信息科学版,2003,28(特刊):79-82
[11]顾国华,王武星,孟国杰,等.GPS测得的汶川大地震前后的地壳运动[J].武汉大学学报.信息科学版,2009,34(11):1 336-1 339,1 349
[12]Curray J R.Tectonics and History of the AndamanSea Region[J].Journal of Asian Earth Science,2005,25:187-232
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