中尼交通廊道318国道沿线泥石流分布及特征数据集(2022年)  

A dataset of the distribution and characteristics of debris flows along the National Highway 318 in the Sino-Nepalese transport corridor(2022)

作　　者：何佳璇 江玉红[1] HE Jiaxuan;JIANG Yuhong(Key Laboratory of Mountain Hazards and Surface Process,Institute of Mountain Hazards and Environment,Chinese Academy of Sciences,Chengdu 610299,P.R.China;School of Engineering Science,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,中国科学院山地灾害与地表过程重点实验室,成都610299 [2]中国科学院大学,工程科学学院,北京100049

出　　处：《中国科学数据（中英文网络版）》2024年第2期326-335,共10页China Scientific Data

基　　金：第二次青藏高原综合科学考察研究(2021QZKK0202);国家重点研发计划政府间国际创新合作专项(2018YFE0100100)。

摘　　要：中尼交通廊道地区在特殊的地理地质环境限制下,缺乏可信且较为完整的泥石流分布数据。本数据集是基于泥石流早期识别和野外实地调查,结合数字高程模型(DEM)和地质图,得到的1990年至2022年中尼交通廊道318国道沿线范围内的泥石流编目及特征信息。泥石流流域的提取主要采用Arc GIS中的水文分析方法,考虑到DEM的精度限制,结合Google Earth影像进行必要的人工校正。降水和温度参数信息取自1980–2009年共30年的国家气象站点实况数据内插年降水数据和年气温数据,断层分布信息来自中国地质调查局发布的《中国1∶50万数字地质图》,地形信息来自12.5 m分辨率的ALOS DEM数据。在28.0°–29.4°N,85.1°–88.9°E范围内,共提取255条泥石流记录,覆盖面积为1660.73 km^(2)。本数据集包含中尼交通廊道318国道沿线泥石流主要分布范围的矢量文件、泥石流目录矢量文件、泥石流参数特征文档3个文件。本数据集均经过现场实地调查、确认,数据信息可靠,可作为基础数据集,应用到该地区的泥石流研究中。Due to the unique geographical and geological conditions in the Sino-Nepal transportation corridor,there is a lack of reliable and comprehensive data on debris flow distribution data in the region.This dataset is compiled based on early identification of debris flows and field surveys,integrating Digital Elevation Models(DEM)and geological maps.It provides a catalog and detailed feature information of debris flows within the corridor along the National Highway 318 between China and Nepal from 1990 to 2022.Precipitation and temperature parameters are derived from 30 years(1980–2009)of interpolated data from national meteorological stations.Fault distribution information is sourced from the 1:50,000 digital geological maps published by the China Geological Survey.Terrain information is obtained from NASA's Shuttle Radar Topography Mission(SRTM)data,which provides a global DEM at a resolution of 12.5 m.Within the geographical coordinates of 28.0°–29.4°N and 85.1°–88.9°E,a total of 255 debris flow records have been extracted,covering an area of 1660.73 km^(2).We primarily employed hydrological analysis methods in ArcGIS for the extraction of debris flow basins.Considering the limitations in DEM accuracy,we made necessary manual corrections with reference to Google Earth imagery.The dataset comprises three files:a vector file depicting the main distribution range of debris flows along the National Highway 318 in the Sino-Nepalese transport corridor;a vector file containing the catalog of debris flows;and a document detailing the parameters and characteristics of the debris flows.The dataset has undergone on-site field surveys and confirmation to ensure its reliability.Therefore,it can serve as a foundational dataset applicable to debris flow studies in the region.

关 键 词：中尼交通廊道318国道 泥石流数据集 Google Earth影像 ALOS DEM 泥石流分布 泥石流特征 

分 类 号：U418.55[交通运输工程—道路与铁道工程] P642.23[天文地球—工程地质学]