Field experimental seismic sounding permitted us to obtain optimal shallow seismic reflection sounding parameters.In process of data processing,we obtained a high-qualitative shallow seismic reflection sounding profil...Field experimental seismic sounding permitted us to obtain optimal shallow seismic reflection sounding parameters.In process of data processing,we obtained a high-qualitative shallow seismic reflection sounding profile by using the techniques such as filtering,edition surgical blanking,prediction deconvolution,fitting static correlation of first arrival time,and velocity analysis.Comprehensive analysis on the information of reflection wave groups along the seismic sounding profile and the stratigraphic and neogeochronological data obtained from many drills near the sounding line reveals that the upper termination of the detected fault zone is located at depth of 75~80 m,in the Middle Pleistocene deposits dated to be about 220 ka BP.The continuity,discontinuity,increasing and decreasing amount of reflection wave groups and change of their configurations,in combination with geological columns of drills,permitted us to know that the width of upper termination of the fault zone is 100 m.It can be inferred from the variation of number of reflection wave groups along the profile that the scarp of hidden fault is 200 m wide and the fault is a synsedimentary active fault in the Early Pleistocene and the early stage of Middle Pleistocene.No tectonic movement,which offset the covering deposits,had occurred since the late stage of Middle Pleistocene.展开更多
随着社会经济的发展,人们越来越多地使用调查数据,尤其是利用复杂调查数据进行研究。复杂调查数据源于复杂抽样设计,是指在抽样调查过程中使用分层、多阶段、整群和不等概率等复杂抽样设计获得调查数据。在数据分析中,若忽视层、群等抽...随着社会经济的发展,人们越来越多地使用调查数据,尤其是利用复杂调查数据进行研究。复杂调查数据源于复杂抽样设计,是指在抽样调查过程中使用分层、多阶段、整群和不等概率等复杂抽样设计获得调查数据。在数据分析中,若忽视层、群等抽样设计的复杂性,直接利用调查数据按照传统数据分析方法,容易得出错误的结论,尤其是涉及标准误的估计。本文主要介绍复杂抽样设计和复杂调查数据的特征,对抽样信息在复杂抽样数据中的应用进行研究,并以中国家庭追踪调查(China Family Panel Studies,CFPS)为例详细说明抽样信息在复杂调查中的应用,说明在复杂抽样调查数据中使用抽样信息的重要性。展开更多
基金A High-new Technique Project by State Development and Planning Commission of China (2001977).
文摘Field experimental seismic sounding permitted us to obtain optimal shallow seismic reflection sounding parameters.In process of data processing,we obtained a high-qualitative shallow seismic reflection sounding profile by using the techniques such as filtering,edition surgical blanking,prediction deconvolution,fitting static correlation of first arrival time,and velocity analysis.Comprehensive analysis on the information of reflection wave groups along the seismic sounding profile and the stratigraphic and neogeochronological data obtained from many drills near the sounding line reveals that the upper termination of the detected fault zone is located at depth of 75~80 m,in the Middle Pleistocene deposits dated to be about 220 ka BP.The continuity,discontinuity,increasing and decreasing amount of reflection wave groups and change of their configurations,in combination with geological columns of drills,permitted us to know that the width of upper termination of the fault zone is 100 m.It can be inferred from the variation of number of reflection wave groups along the profile that the scarp of hidden fault is 200 m wide and the fault is a synsedimentary active fault in the Early Pleistocene and the early stage of Middle Pleistocene.No tectonic movement,which offset the covering deposits,had occurred since the late stage of Middle Pleistocene.
文摘随着社会经济的发展,人们越来越多地使用调查数据,尤其是利用复杂调查数据进行研究。复杂调查数据源于复杂抽样设计,是指在抽样调查过程中使用分层、多阶段、整群和不等概率等复杂抽样设计获得调查数据。在数据分析中,若忽视层、群等抽样设计的复杂性,直接利用调查数据按照传统数据分析方法,容易得出错误的结论,尤其是涉及标准误的估计。本文主要介绍复杂抽样设计和复杂调查数据的特征,对抽样信息在复杂抽样数据中的应用进行研究,并以中国家庭追踪调查(China Family Panel Studies,CFPS)为例详细说明抽样信息在复杂调查中的应用,说明在复杂抽样调查数据中使用抽样信息的重要性。
