摘要
约400km2的1∶5万白水头-歧口镇幅是渤海湾西岸南大港与北大港古湖的组成部分。以1∶5万白水头-歧口镇幅175个区域地质调查点的多维数据——点的坐标、点的地表与所揭露的湖底板的高程和区域性年代学框架——为基础,对南、北大港古湖其余约880km2未实测区域布设控制贝壳堤和湖底板高程的虚拟三维地质点275个(虚拟点的坐标、贝壳堤顶部与湖底板的高程)。应用C-Tech公司EVSPro软件的三维技术处理实测与虚拟的450个地质点,获得了约5000年以来、面积约1280km2的南、北大港古湖底板与贝壳堤的模拟形态。
The 1∶50000 Baishuitou-Qikouzhen Sheet, covering an area of ～400 km2, is a component part of the paleo-lagoon of the Nandagang and Beidagang on the west coast of the Bohai Bay. On the basis of multidimensional data-site coordinates, site surface and the altitude and regional chronological framework of the revealed lagoon floor-of 175 regional geological survey sites in the Baishuitou-Qikouzhen Sheet, 275 virtual 3D geological sites were laid out in the rest 2/3 unmeasured area (～880 km2) of the paleo-lagoon of the Nandagang and Beidagang to control the coordinates of the virtual sites and the altitudes of the top of the shell ridges and lagoon floor. 3D processing of the measured and virtual 450 geological sites was performed by using the EVS Pro software of C-Tech Co. and then a 1280 km2 simulated morphology of paleo-lagoon floor and chenier in the Nandagang and Beidagang in the past ～5000 years.
出处
《地质通报》
CAS
CSCD
北大核心
2005年第7期672-676,共5页
Geological Bulletin of China
基金
中国地质调查局地质调查项目(0199202054)资助。
关键词
渤海湾西岸
南、北大港
潟湖底板
虚拟重建
west coast of the Bohai Bay
Nandagang and Beidagang
lagoon floor
virtual reconstruction
