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[1]刘婧楠,常玉巧,田 鹏,等.德钦—维西地区地貌特征及其对构造活动的响应[J].地震研究,2023,46(03):315-352.[doi:10.20015/j.cnki.ISSN1000-0666.2023.0033 ]
　LIU Jingnan,CHANG Yuqiao,TIAN Peng,et al.Geomorphic Characteristics of Drainage Basins in Deqin-Weixi Area and Their Response to Tectonic Activities[J].Journal of Seismological Research,2023,46(03):315-352.[doi:10.20015/j.cnki.ISSN1000-0666.2023.0033 ]
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德钦—维西地区地貌特征及其对构造活动的响应(PDF/HTML)

《地震研究》[ISSN:1000-0666/CN:53-1062/P]

卷:
46
期数:
2023年03期
页码:
315-352
栏目:
出版日期:
2023-06-25

文章信息/Info

Title:
Geomorphic Characteristics of Drainage Basins in Deqin-Weixi Area and Their Response to Tectonic Activities
作者:
刘婧楠; 常玉巧; 田 鹏; 李 圣
(云南省地震局,云南 昆明 650224)
Author(s):
LIU Jingnan; CHANG Yuqiao; TIAN Peng; LI Sheng
(Yunnan Earthquake Agency,Kunming 650224,Yunnan,China)
关键词:
0
Keywords:
Deqin-Weixi area;  drainage basin;  the hypsometric integral;  geomorphic evolution;  tectonic activity
分类号:
P315.22
DOI:
10.20015/j.cnki.ISSN1000-0666.2023.0033
摘要:
基于ASTER GDEM 30 m数据,使用ArcGIS空间分析模块提取了德钦—维西地区流域盆地范围,得到了德钦—维西地区亚流域盆地及主要次级流域盆地面积-高程积分(HI)值,获得990个亚流域盆地HI等值分区及12个主要次级流域盆地HI曲线。结果表明:阿东河、东水河和三岔河3个次级流域盆地HI曲线呈微凸型,处于地貌演化的幼年期,其它9个次级流域盆地HI曲线呈S型,处于壮年期。研究区HI值表现为北高南低趋势,HI低值条带的展布方向与研究区活动构造的延伸方向基本一致; HI高值主要分布于断裂带两侧及构造交会区域。研究区地貌演化的主控因素是构造活动,岩性和气候影响不明显,地貌对区内构造活动具有很好的响应关系。
Abstract:
Deqin-Weixi area,located in the middle south section of the Hengduan Mountains on the southeast margin of the Tibet Plateau,and near the Southwest boundary of the Sichuan-Yunnan rhombic block,is a typical active tectonic area,where plenty of late Quaternary active faults extend.With complex topography and developed water system,this area is an ideal place for researchers to study the response of landform to tectonic activities.Based on the spatial analysis mode of ArcGIS,the hypsometric integral(HI)values of the sub-drainage areas and main secondary drainage areas in Deqin-Weixi area were extracted by using ASTER GDEM 30 m data,and the HI equivalent zoning of 990 sub-drainage areas and HI curves of 12 main secondary drainage areas were obtained.The results show that the HI curves in the Adong River secondary basin,the Dongshui River secondary basin,and the Sanchahe River secondary basin are slightly convex,indicating that the geomorphic evolution of these 3 basins are in the “young” stage.The HI curves in other basins are S-shaped,indicating the geomorphic evolution of these basins are in the “mature” stage.The HI values are high in the north and low in the south of the study area,and the low HI value are roughly distributed along with the extension of active structures,while high HI values are mainly distributed on both sides of the fault zone and in the tectonic intersection area.The tectonic activity is the main controlling factor of the geomorphic evolution in the study area; the geomorphology responds well to the tectonic activity in the study area.Lithology and climate scarcely influence the geomorphology in the study area.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2022-10-08.
基金项目:云南省地震局科技专项(2019ZX03); 云南省重点研发计划项目(202203AC100003).
第一作者简介:刘婧楠(1995-),助理工程师,主要从事活动构造、构造地貌及地震次生灾害研究.E-mail:1291027734@qq.com.
通讯作者简介:常玉巧(1988-),工程师,主要从事活动构造、古地震及构造地貌研究.E-mail:349797655@qq.com.
更新日期/Last Update: 2023-06-25