2016-2021年贡嘎山海螺沟冰川消融区冰裂隙分布数据集  

A dataset of glacier crevasse distribution in the ablation areas of Hailuogou Glacier,Mt.Gongga(2016-2021)

作　　者：王晗 刘巧[1] 钟妍 罗云翼 WANG Han;LIU Qiao;ZHONG Yan;LUO Yunyi(Institute of Mountain Hazards and Environment,Chinese Academy of Sciences,Chengdu 610041,P.R.China;University of Chinese Academy of Sciences,Beijing 100049,P.R.China)

机构地区：[1]中国科学院、水利部成都山地灾害与环境研究所,成都610041 [2]中国科学院大学,北京100049

出　　处：《中国科学数据（中英文网络版）》2022年第4期194-204,共11页China Scientific Data

基　　金：国家自然科学基金(41871069);四川省杰出青年基金(2021JDJQ0009)。

摘　　要：山地冰川冰裂隙分布及其变化动态对于研究冰川动力学过程、冰川消融及其产汇流以及冰川失稳诱发灾害等具有重要意义。2016-2021年间,对贡嘎山东坡海螺沟冰川消融区开展了无人机重复航测,获取了冰川下游约4 km冰舌段各年消融期的高分辨率正射影像。基于配准的影像,对海螺沟冰舌段的冰裂隙进行了目视解译并矢量化,形成2016-2021年海螺沟冰川消融区冰裂隙空间分布数据,初步分析了冰裂隙的分布特征模式及其年际间的变化。本数据集包含对冰裂隙的长度及其延伸方向等的空间信息属性,是针对我国西部典型海洋型冰川的首套冰川结构及其变化相关调查结果,可为深入研究海洋型冰川动态、冰川结构变化及其水文和动力过程影响以及评估冰川未来演化趋势等提供参考。The distribution of crevasses in mountain glaciers is of great significance for the study on glacier dynamics,ablation,and glacial instability-induced disasters.From 2016 to 2021,based on repeated aerial surveys during ablation seasons in the Hailuogou Glacier ablation areas on the eastern slope of Gongga Mountain,we obtained the annual high-resolution orthophoto images of the 4 km ice tongue of the glacier during the ablation period.Based on these co-registered images,the crevasses in Hailuogou ice tongue were visually interpreted and delineated from 2016 to 2021.We preliminarily analyzed the distribution characteristics and inter-annual variation of the crevasses.This dataset contains spatial information attributes like the crevasse length and orientation.It is the first set of survey results related to the structural glaciology of mountain glaciers in western China and it can provide data reference for the study on glacial hydrology,mass balance and dynamic models.

关 键 词：海螺沟冰川 贡嘎山 冰裂隙 无人机 

分 类 号：P343.6[天文地球—水文科学]