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Time lag between reduction of sediment supply and coastal erosion.
- Source :
- International Journal of Sediment Research; Mar2011, Vol. 26 Issue 1, p27-35, 9p
- Publication Year :
- 2011
-
Abstract
- Abstract: The disruption of sediment supply from river to coast by dam development has been a topic of global concern. In Japan, among the top 30 dams in terms of height, 14 dams were constructed prior to 1970 and another 6 dams before 1980. However, the coastline erosion did not surface up as a grievous problem until the 1980s. According to the River Bureau of Japan, the overall erosion rate along the coastline of Japan was 0.72×10<superscript>6</superscript>m<superscript>2</superscript>/yr prior to 1980, but sharply increased to 1.6×10<superscript>6</superscript>m<superscript>2</superscript>/yr since 1980. Therefore, there was a time lag between the disruption of sediment supply by dam and beach erosion. This paper presents a case study on what may have delayed the response of beach to the effect of dam construction. [Copyright &y& Elsevier]
Details
- Language :
- English
- ISSN :
- 10016279
- Volume :
- 26
- Issue :
- 1
- Database :
- Supplemental Index
- Journal :
- International Journal of Sediment Research
- Publication Type :
- Academic Journal
- Accession number :
- 60084546
- Full Text :
- https://doi.org/10.1016/S1001-6279(11)60073-5