大连周边海域航空重力调查方法及重要成果  

Achievements in airborne gravity survey around the Dalian sea area

作　　者：张玄杰[1] 陈斌[1] 朱卫平[1] 张婉[1] 刘英会[1] 林晓星[1] 李冰[1] 

机构地区：[1]中国国土资源航空物探遥感中心,北京100083

出　　处：《中国地质调查》2016年第2期40-45,共6页Geological Survey of China

基　　金：国家专项"海洋航空地球物理探测及应用(编号:GZH200900502)"项目资助

摘　　要：为加强海洋地质调查工作,中国地质调查局组织实施了海洋航空地球物理探测及应用项目,在大连海域及其周边,应用GT-1A航空重力测量系统,开展了1∶20万航空重力调查工作,获取了高质量的航空重力数据9.4万测线km,原始测量总精度达到1.27×10^(-5)m/s^2;形成了一套覆盖渤海东部、北黄海、辽东半岛和山东半岛的航空重力系列图件,填补了研究区内航空重力资料的空白。通过综合解释与研究,在基底构造形态分析、主要构造单元边界厘定、断裂构造分布特征研究以及局部构造异常圈定等方面取得了重要成果,为研究区海洋区域地质调查、渤海和北黄海的油气资源调查、海陆过渡区关键地质问题的解决提供了重要依据。To meet the needs of marine regional geological survey, airborne gravity survey has been carried out in the Dalian sea area. With the GT- 1 A airborne gravity measurement system, we obtained the high quality gravity data of 94 000 km. The total raw measurement accuracy reached 1.27 × 10 -5m/s2. The airborne gravity data covers Eastern Bohai Sea, North Yellow Sea, Liaodong Peninsula and Shandong Peninsula. Based on the new data and integrated study, many important results, including the basement structure morphology, the boundaries of the main structural units, the characteristics of fault structure, and the delineation of local structural anomalies have been gained. These achievements are favorable for marine regional geological survey, petroleum exploration and integrated investigation of the marine geo-environment in coastal zones.

关 键 词：航空重力 北黄海坳陷 基底断裂 苏鲁造山带 

分 类 号：P631.125[天文地球—地质矿产勘探]