亚洲大陆边缘海底峡谷的形态、分布及演化进程

王雁冰; 韩喜彬; 胡智龙; 赵宁; 阳凡林; 葛倩; 许冬; 高金耀

doi:10.3969/j.issn.1001-909X.2020.04.005

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海洋学研究 ›› 2020, Vol. 38 ›› Issue (4) : 48-57. DOI: 10.3969/j.issn.1001-909X.2020.04.005

研究论文

亚洲大陆边缘海底峡谷的形态、分布及演化进程

王雁冰^1,2,3, 韩喜彬^*2,3, 胡智龙^1,2,3, 赵宁^1,2,3, 阳凡林¹, 葛倩^2,3, 许冬^2,3, 高金耀^2,3

作者信息 +

Morphology, distribution and evolution process of submarine canyons in the Asian Continental Margin

WANG Yanbing^1,2,3, HAN Xibin^*2,3, HU Zhilong^1,2,3, ZHAO Ning^1,2,3, YANG Fanlin¹, GE Qian^2,3, XU Dong^2,3, GAO Jinyao^2,3

Author information +

文章历史 +

摘要

基于SRTM15_Plus水深数据,利用地形表面流水分析与等高线几何分析相结合的方法对亚洲大陆边缘海底峡谷进行识别,分析峡谷的形态、分布及演化进程。共识别出海底峡谷531条,按照平面形态分为直线型、蛇曲型和树枝型三种,数量分别为239条、75条和217条。直线型峡谷主要分布在白令海盆地、千岛盆地、南海等海域;蛇曲型峡谷主要分布在孟加拉湾东部俯冲带海域;树枝型峡谷主要分布在日本海沟、伊豆小笠原海沟和南海海槽交界处,南海以及苏门答腊俯冲带海域。根据峡谷的形态与分布,结合研究区内构造背景,讨论了峡谷“直线型-蛇曲型”的形态演化进程,并依据树枝型峡谷主干谷的形态信息,推测存在“蛇曲型-树枝型”、“直线性-树枝型”的形态演化进程。

Abstract

Based on the SRTM15_Plus depth data, the submarine canyons in the Asian Continental Margin were identified by using the method of combining topographic surface flow analysis with contour geometry analysis. And the morphology, distribution characteristics and evolution process of the canyons in the study area were analyzed. A total of 531 submarine canyons are identified and divided into linear, meandering and dendritic according to the plane shape. The numbers of each type of canyon are 239, 75 and 217 respectively. Linear canyons are mainly distributed in the Bering Sea Basin, the Kuril Basin and the South China Sea. Meandering canyons are mainly distributed in the subduction zone east of the Bay of Bengal. Dendritic canyons are mainly distributed in the junction of the Japan Trench, the Izu Bonin Trench and the Nankai Trough, the South China Sea and the Sumatra subduction zone. According to the distribution of the canyons and the tectonic background in the study area, the morphological evolution process of “Linear-Meandering” was discussed. According to the morphological information of the main valley of dendritic canyons, it is inferred that there are “Linear-Dendritic” and “Meandering-Dendritic” morphological evolution processes.

导出引用

王雁冰, 韩喜彬, 胡智龙, 赵宁, 阳凡林, 葛倩, 许冬, 高金耀. 亚洲大陆边缘海底峡谷的形态、分布及演化进程[J]. 海洋学研究. 2020, 38(4): 48-57 https://doi.org/10.3969/j.issn.1001-909X.2020.04.005

WANG Yanbing, HAN Xibin, HU Zhilong, ZHAO Ning, YANG Fanlin, GE Qian, XU Dong, GAO Jinyao. Morphology, distribution and evolution process of submarine canyons in the Asian Continental Margin[J]. Journal of Marine Sciences. 2020, 38(4): 48-57 https://doi.org/10.3969/j.issn.1001-909X.2020.04.005

中图分类号： P737.2

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