| dc.description.abstract | Tamshui River is the main river flow in Taiwan basin, and flow by three influent of Tahan River, Shintien River and Chilung River. The all transition of Tamshui River was present the formation of Taipei Basin. Based on the study of former(Du,1997;Young,1996), Due to the collapse of Taipei Basin, the Tahan river was been capture, and the Chilung was suspected that ever change direction, what affected among the Shintien river between them at that time is our interest, therefore, this study try to use the different way of geomophological methods to analysis the Shintien river, offer the result to interpret and in different observe opinion.
In this study, e collected different scale topographic maps, different period aerial photographs, GIS digital data, drilling data of Taipei Basin, and 40m ×40m grid DTM covering the study area, and uses MapInfo GIS tool to do digitizing work to manage related data. Uses quantification geomorphological methods such as longitudinal river profile, cross-valley profile, peak, divide altitude alteration, rockbase, and FT1 terrain analysis to figure out the character of Shintien river and compare the relation with other rivers.
The results show that the peak analysis can tell that, the searching window bigger, the Chingmei river disappear, Bansh river become a wild valley and Nansh river spilt to two water aeras, and the connect to the shintien river direction of NW-SE. According to rock bass analysis, the FT1 terrain joint the Songshan formation rock bass in Shintien. FT1 terrain can present the 11,000ya paleogeomorphic surfaces. | en_US |