摘要
2012年笔者在西藏龙尾湖地区开展了冻土带天然气水合物音频大地电磁法测量工作,通过综合分析认为,该区冻土层厚度一般为60~90m,冻土发育程度主要与构造破碎带、沉积松散层、地表水和海拔高程等因素有关。断裂构造主要分布在测区北部,倾向主要为南倾,测区南部的断裂构造主要为北倾。第三系和第四系地层主要分布在测区东南部,沉积厚度大于1km。
In 2012,the author carried out surveying work of gas hydrate in permafrost by audio magnetotelluric method in Tibet Longweihu area.Through the comprehensive analysis,the thickness of permafrost layer in this area is 60-80m,which is related to the fracture structure,loose deposition,surface water,the altitude and so on.The faults mainly appear in the northern part of the surveyed area,and the tendency of faults is mainly for south.The faults in the southern part of the surveyed area are mainly for north.Tertiary and quaternary strata mainly appear in the southeastern part of the surveyed area,and the sedimentary thickness is more than 1km.
出处
《工程地球物理学报》
2014年第3期333-337,共5页
Chinese Journal of Engineering Geophysics
基金
863项目(编号:2012AA061403)
水合物专项(编号:GZHL20110324
GZHL20110319)联合资助
