High-precision geomorphological characteristics of the seafloor near the Yap-Mariana Trench

doi:10.3969/j.issn.1001-909X.2020.01.004

Abstract

Abstract: Based on the multi-beam bathymetric data of the Yap-Mariana Trench in the Western Pacific Ocean, the high-precision bathymetric topographic maps in the rectangular areas of 9.8°N-13.2°N and 132.2°E-145°E were obtained. Then the detailed geomorphologic analysis shows that there are large-scale horst-graben geomorphology on the slope of the southern part of Mariana Trench, obvious segmentation in the northern part of the Yap Trench, and large-scale ridge-trough geomorphology in different distribution directions in the Philippine Basin and the Parece Vela Basin. The results show that the complex topographic and geomorphological features are mainly controlled by plate motion, and the topographic and geomorphological features of the region are classified according to the published research results.

Key words: Western Pacific Ocean, Yap Trench, Mariana Trench, topography and geomorphology, trench-arc-basin system

CLC Number:

ZHANG Zhiyi, XU Dong, HAN Xibin, WANG Yanbing, HU Zhilong, GE Qian, YANG Fanlin. High-precision geomorphological characteristics of the seafloor near the Yap-Mariana Trench[J]. Journal of Marine Sciences, 2020, 38(1): 27-41.

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