- 期刊
- OpenAccess
Geomorphological Change Detection Using an Integrated Method: A Case Study on the Taan River Watershed, Taiwan
並列摘要
The Chi-Chi earthquake of 1999 in Central Taiwan caused significant vertical uplift and ignited a dynamic fluvial erosion system in the Taan River. In order to understand the geomorphologic changes in the Taan River after the Chi-Chi earthquake, this study uses multi-temporal aerial photos to produce orthoimages and surface models to derive regional three dimensional movements from 2001 - 2009. The Particle Image Velocimetry (PIV) technique is applied to identify the horizontal movements from both orthoimages and digital surface models (DSMs). While PIV can provide estimates for the channel change direction and magnitude; vertical analysis such as river incision rate derivation could be performed using the height difference between multi-temporal surface models. The results from these two approaches are then integrated for river geomorphological interpretation. It is observed that the proposed scheme is capable of identifying three river evolution stages from the extracted movements in the Taan case. These stages are: years 2001 to 2003, 2004 to 2006, and 2007 to 2009, respectively. The total incision between 2001 and 2009 is about 10 m. This study demonstrates that both PIV and DSM subtraction are effective in river geomorphological change identification. The integration of these two approaches could provide more information when observing the evolution of river morphology.
延伸閱讀
- 吳俊毅（2017）。Geomorphological Change Detection Using an Integrated Method: A Case Study on the River Channel of Western Taiwan〔博士論文，國立交通大學〕。華藝線上圖書館。https://www.airitilibrary.com/Article/Detail?DocID=U0030-0705201811525523
- 吳俊毅、史天元（2018）。Geomorphological Change Detection Using an Integrated Method: A Case Study on the River Channel of Western Taiwan。航測及遙測學刊，23(3)，141-156。https://doi.org/10.6574/JPRS.201809_23(3).0001
- 楊佳寧、郭鎮維、游牧笛、沈淑敏（2022）。Construction and Analysis of River Basin Districts, Longitudinal Segments, and Morphological Groups for Streams in Taiwan。中華水土保持學報，53(1)，13-24。https://doi.org/10.29417/JCSWC.202203_53(1).0002
- 黃嘉琦、葉信富（2021）。Exploring Basin Drainage Characteristics and Hydrogeological Parameters During Dry and Wet Seasons in Southern Taiwan。鑛冶：中國鑛冶工程學會會刊，65(1)，22-35。https://doi.org/10.30069/MM.202103_65(1).02
- 楊仲舒（2018）。Temporal and Spatial Variations of Weathering Along the Catchment of Heping river and Sinwulyu river in Eastern Taiwan〔碩士論文，國立臺灣大學〕。華藝線上圖書館。https://doi.org/10.6342/NTU201804323