Engineering construction actively occurs in coastal zones, and these areas have numerous potential geological hazard factors. Since 2009, the development of geological surveys in sea areas has promoted extensive geoph...Engineering construction actively occurs in coastal zones, and these areas have numerous potential geological hazard factors. Since 2009, the development of geological surveys in sea areas has promoted extensive geophysical surveys in Qingdao offshore. In the present study, the types and distribution of potential geological hazard factors were systematically revealed using sub-bottom profile data, side-scan sonar data, and single-channel seismic data, among others. Based on previous research findings, the potential geological hazard factors are classified, and control factors in Qingdao offshore are discussed. The research results show that the primary potential geological hazards include active faults, buried paleo channels, shallow gas, irregular bedrock, eroded gullies, estuary deltas, tidal sand ridges, and seawater intrusion. In addition, neotectonic movement, sea level changes and sedimentary dynamic processes were the main factors that affected the distribution of geological hazards in Qingdao offshore.展开更多
On the basis of field observation and measuring data, the authors discuss the types,distributing regularity and gemesos of geological disasters on the Northern Huashan predmont and its foreland plain. We think that ...On the basis of field observation and measuring data, the authors discuss the types,distributing regularity and gemesos of geological disasters on the Northern Huashan predmont and its foreland plain. We think that the activity of Northern Huashan piedmont fault zone since Quaternary period makes the mountain highly uplift,which provide a favorable terrain condition for gravitatiotal geological hazard;the recent activity of the buried fault on the foreland plain is the main reason of ground cracking and sinking .Finally ,we make a synthetical analysis of geological hazard risk on the study area.展开更多
基金jointed funded by the National Natural Science Foundation of China (41376079 and 41276060)Marine Geology Survey Project (GZH200900501,DD20160137 and DD20190205)Foundation of the Shandong Provincial Key Laboratory of Marine Ecology and Environment&Disaster Prevention (201304).
文摘Engineering construction actively occurs in coastal zones, and these areas have numerous potential geological hazard factors. Since 2009, the development of geological surveys in sea areas has promoted extensive geophysical surveys in Qingdao offshore. In the present study, the types and distribution of potential geological hazard factors were systematically revealed using sub-bottom profile data, side-scan sonar data, and single-channel seismic data, among others. Based on previous research findings, the potential geological hazard factors are classified, and control factors in Qingdao offshore are discussed. The research results show that the primary potential geological hazards include active faults, buried paleo channels, shallow gas, irregular bedrock, eroded gullies, estuary deltas, tidal sand ridges, and seawater intrusion. In addition, neotectonic movement, sea level changes and sedimentary dynamic processes were the main factors that affected the distribution of geological hazards in Qingdao offshore.
文摘On the basis of field observation and measuring data, the authors discuss the types,distributing regularity and gemesos of geological disasters on the Northern Huashan predmont and its foreland plain. We think that the activity of Northern Huashan piedmont fault zone since Quaternary period makes the mountain highly uplift,which provide a favorable terrain condition for gravitatiotal geological hazard;the recent activity of the buried fault on the foreland plain is the main reason of ground cracking and sinking .Finally ,we make a synthetical analysis of geological hazard risk on the study area.
