Journal article
Evolution of Waisanding barrier in Taiwan
Proceedings of the Seventh International Conference on Hydroscience and Engineering
18 Apr 2007
Abstract
This paper uses various maps, aerial photos and satellite images produced within the last 100 years to analyze changes of the largest sandbar in Taiwan, the Waisanding barrier. Due to geographical changes, decreased sand supplied from rivers, and inappropriate human exploitation, the Waisanding barrier passed its maximum life cycle size and is currently in a recession period. Since 1986, due to a decrease in river sediment supply and erosion by waves and tides, the barrier is migrating southwestward at a rate of 70 to 90 m/year; it has been eroding at a rate of 65 to 80 meters per year. The elevation of the central part of the barrier has decreased to only +2.5 meters above sea level because of wind deflation and wave overwash. Waisanding barrier acts as a breakwater protecting the Yunchia seashore. In addition, the inland sea between the barrier's western side and the seashore is an important aquaculture area. If Waisanding continues to subside and erode, it will seriously affect the security of the Yunchia seashore as well as impact on the local fishermen's living. In brief, a protection strategy for Waisanding barrier must be completed or the barrier will ultimately vanish.
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Details
- Title
- Evolution of Waisanding barrier in Taiwan
- Creators
- Wen-Juinn Chen (Author) - Drexel University (1970-)
- Publication Details
- Proceedings of the Seventh International Conference on Hydroscience and Engineering
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- DU; College of Engineering; Civil, Architectural, and Environmental Engineering
- Identifiers
- 991014632232604721