马里亚纳海沟水深探测及“挑战者深渊”海底地形特征

刘方兰; 曲佳

马里亚纳海沟水深探测及“挑战者深渊”海底地形特征

刘方兰,
曲佳

广州海洋地质调查局, 广州 510760

基金项目:

国际海域资源调查与开发"十二五"富钴结壳资源评价项目(DY125-13-R-09)

详细信息

作者简介:
刘方兰(1967-),男,教授级高级工程师,主要从事海洋地质地球物理技术方法研究工作.E-mail:lflhome@21cn.com

中图分类号: P229.1
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出版历程
- 收稿日期: 2013-01-11

SEAFLOOR TOPOGRAPHY AND BATHYMETRIC SURVEY OF THE CHALLENGER DEEP OF MARIANA TRENCH

LIU Fanglan,
QU Jia

Guangzhou Marine Geological Survey, Guangzhou 510760, China

摘要

摘要: "海洋六号"综合调查船先后于2011、2012年,利用EM122多波束测深系统在马里亚纳海沟最深海域"挑战者深渊"进行了全覆盖水深测量,获得了区域内详细的海底地形资料,揭示了马里亚纳海沟在区内呈近东西向延伸以及海沟两侧斜坡地形迥异、不对称的特点,南北两侧不同的地形地貌特征反映了马里亚纳海沟形成过程中两侧不同的次生构造活动影响。"挑战者深渊"区内有西部、中部和东部3个洼地,其中,西部洼地较深,其中心位置(142°12.14'E,11° 19.92'N)水深10 917 m,是马里亚纳海沟的最深点。
- 马里亚纳海沟 /
- 挑战者深渊 /
- 多波束测深 /
- 海底地形
Abstract: In 2011 and 2012, with the Haiyang-6 as the carrier, EM122 multibeam bathymetric system was used to carry out the full coverage depth measurement in the Challenger Deep, the deepest point in the Mariana Trench. Detail bathymetric data were obtained from the region. It was revealed that the trench extended in an east-west direction and the geomorphological features are different between the two sides of the trench, indicating the differentiation of the secondary tectonic activities. There are three depressions in the Challenger Deep, with the western depression as the deepest. The depth of the central point(142° 12.14' E,11° 19.92' N) is 10 917 meters, which, in fact, is the deepest point in the Mariana Trench.
- Mariana Trench /
- Challenger Deep /
- multibeam bathymetry /
- seabed topography