SEAFLOOR TOPOGRAPHY AND BATHYMETRIC SURVEY OF THE CHALLENGER DEEP OF MARIANA TRENCH
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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。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.
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Key words:
- Mariana Trench /
- Challenger Deep /
- multibeam bathymetry /
- seabed topography
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[1] Basic Geology
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