亚洲大陆边缘海底峡谷的形态、分布及演化进程

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

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

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

1.山东科技大学测绘科学与工程学院,山东青岛 266590;
2.自然资源部海底科学重点实验室,浙江杭州 310012;
3.自然资源部第二海洋研究所,浙江杭州 310012

收稿日期:2020-08-10 出版日期:2020-12-15 发布日期:2020-12-15
通讯作者: *韩喜彬(1976-), 男, 副研究员, 主要从事海洋沉积与地貌研究。 E-mail:hanxibin@sio.org.cn
作者简介:王雁冰(1997-), 男, 河南省周口市人, 主要从事海洋测绘研究。 E-mail:1165691615@qq.com
基金资助:
中央级公益性科研院所基本科研业务费专项资金资助项目(YJJC2001); “全球变化与海气相互作用”专项项目(GASI-GEOGE-05, GASI-GEOGE-03, GASI-02-PAC-CJ07); 浙江省科技厅青山湖海洋科技创新载体建设项目(2017E80001)

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

1. Geomatics College, Shandong University of Science and Technology, Qingdao 266590, China;
2. Key Laboratory of Submarine Geosciences, Ministry of Natural Resources, Hangzhou 310012, China;
3. Second Institute of Oceanography, Ministry of Natural Resources, Hangzhou 310012, China

Received:2020-08-10 Online:2020-12-15 Published:2020-12-15

摘要/Abstract

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。

关键词: 亚洲大陆边缘, 海底峡谷, 识别, 分布特征, 演化

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.

Key words: the continental margin in Asia, submarine canyon, identification, distribution features, evolution

中图分类号:

P737.2

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.

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.

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亚洲大陆边缘海底峡谷的形态、分布及演化进程

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

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