{"title":"Development of a basin geomorphic information system using a TIN-DEM data structure","authors":"Takuma Takasao, Michiharu Shiiba, Yasuto Tachikawa, Ikuo OOE","doi":"10.2208/prohe.36.677","DOIUrl":"https://doi.org/10.2208/prohe.36.677","url":null,"abstract":"A geographic information system in hydrologic modeling, BGIS (Basin Geomorphic Information System) is presented for modeling a river basin using a TIN-DEM (Triangulated Irregular Network-Digital Elevation Model) data structure. BGIS is made up by four modules, (1) a module for making a triangle based terrain model, (2) a module for joining isolated vally segments to a channel network, (3) a module for getting rid of pits, (4) a module for subdividing triangular facets.Using a data set processed with BGIS, a watershed source area for any segments in a stream network can be delineated. BGIS was applied for Inakawa basin (54.0km2) and Arakawa experimental basin (0.184km2).","PeriodicalId":39341,"journal":{"name":"水利学报","volume":"36 1","pages":"677-684"},"PeriodicalIF":0.0,"publicationDate":"1992-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.jstage.jst.go.jp/article/prohe1990/36/0/36_0_677/_pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147906566","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}