Lidar-Derived Decadal Change in Barrier Morphology: A Case Study of Waisanding, Taiwan
Barrier change is a complex process of evolution of coastal topography, which is related to the interaction of driving forces such as waves, tides and sea level rise (SLR) with beaches. The Waisanding Barrier (WSDB) in Taiwan has suffered from continuous beach erosion in recent decades. Some short-t...
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2024-11-01
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| author | Hsien-Kuo Chang Jin-Cheng Liou Wen-Son Chiang Wei-Wei Chen |
| author_facet | Hsien-Kuo Chang Jin-Cheng Liou Wen-Son Chiang Wei-Wei Chen |
| author_sort | Hsien-Kuo Chang |
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| description | Barrier change is a complex process of evolution of coastal topography, which is related to the interaction of driving forces such as waves, tides and sea level rise (SLR) with beaches. The Waisanding Barrier (WSDB) in Taiwan has suffered from continuous beach erosion in recent decades. Some short-term studies have been carried out to understand the characteristics of the barrier change to provide a reference for future barrier protection. In this paper, the digital elevation model (DEM) measured by LiDAR (Light Detection and Ranging), over nearly two decades was used to analyze the morphological changes, the land area and volume. The changes in the morphology, including the whole shoreline, duneline height, width of forebeach and backbarrier, are investigated. The WSDB’s land area and land volume were analyzed to show a continuous decrease by a rate of −0.418 × 10<sup>6</sup> m<sup>2</sup>/year and −3.96 × 10<sup>5</sup> m<sup>3</sup>/year, respectively. The corresponding average land volume (LV) decrease in elevation can be estimated to be −0.0286 m/year. The changes in these features are discussed and relate to land subsidence, sea level rise and large waves induced by typhoons passing near WSDB. |
| format | Article |
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| institution | OA Journals |
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| spelling | doaj-art-ea6fa84c8f574a5184a44fda566ea4ee2025-08-20T02:00:22ZengMDPI AGGeosciences2076-32632024-11-01141231810.3390/geosciences14120318Lidar-Derived Decadal Change in Barrier Morphology: A Case Study of Waisanding, TaiwanHsien-Kuo Chang0Jin-Cheng Liou1Wen-Son Chiang2Wei-Wei Chen3Department of Civil Engineering, National Yang Ming Chiao Tung University, Hsinchu 300, TaiwanDepartment of Civil Engineering, National Yang Ming Chiao Tung University, Hsinchu 300, TaiwanTainan Hydraulics Laboratory, National Cheng Kung University, Tainan 709, TaiwanDepartment of Civil Engineering, National Yang Ming Chiao Tung University, Hsinchu 300, TaiwanBarrier change is a complex process of evolution of coastal topography, which is related to the interaction of driving forces such as waves, tides and sea level rise (SLR) with beaches. The Waisanding Barrier (WSDB) in Taiwan has suffered from continuous beach erosion in recent decades. Some short-term studies have been carried out to understand the characteristics of the barrier change to provide a reference for future barrier protection. In this paper, the digital elevation model (DEM) measured by LiDAR (Light Detection and Ranging), over nearly two decades was used to analyze the morphological changes, the land area and volume. The changes in the morphology, including the whole shoreline, duneline height, width of forebeach and backbarrier, are investigated. The WSDB’s land area and land volume were analyzed to show a continuous decrease by a rate of −0.418 × 10<sup>6</sup> m<sup>2</sup>/year and −3.96 × 10<sup>5</sup> m<sup>3</sup>/year, respectively. The corresponding average land volume (LV) decrease in elevation can be estimated to be −0.0286 m/year. The changes in these features are discussed and relate to land subsidence, sea level rise and large waves induced by typhoons passing near WSDB.https://www.mdpi.com/2076-3263/14/12/318dune heightwave energyland subsidencesea level rise |
| spellingShingle | Hsien-Kuo Chang Jin-Cheng Liou Wen-Son Chiang Wei-Wei Chen Lidar-Derived Decadal Change in Barrier Morphology: A Case Study of Waisanding, Taiwan Geosciences dune height wave energy land subsidence sea level rise |
| title | Lidar-Derived Decadal Change in Barrier Morphology: A Case Study of Waisanding, Taiwan |
| title_full | Lidar-Derived Decadal Change in Barrier Morphology: A Case Study of Waisanding, Taiwan |
| title_fullStr | Lidar-Derived Decadal Change in Barrier Morphology: A Case Study of Waisanding, Taiwan |
| title_full_unstemmed | Lidar-Derived Decadal Change in Barrier Morphology: A Case Study of Waisanding, Taiwan |
| title_short | Lidar-Derived Decadal Change in Barrier Morphology: A Case Study of Waisanding, Taiwan |
| title_sort | lidar derived decadal change in barrier morphology a case study of waisanding taiwan |
| topic | dune height wave energy land subsidence sea level rise |
| url | https://www.mdpi.com/2076-3263/14/12/318 |
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