{"title":"随着弗吉尼亚切萨皮克湾潮汐差的减小，海岸线侵蚀率增加","authors":"P. Rosen","doi":"10.2307/1350594","DOIUrl":null,"url":null,"abstract":"The Virginia Chesapeake Bay has a large variation (200%) in tidal range (.36m to 1m) over a relatively short (120 km) distance. Analysis of a regional sampling of shoreline morphology and processes demonstrates that decreasing tidal ranges result in increasing long-term erosion rates. This results because larger tidal ranges form a higher elevation beach. Thus, in larger tidal range areas, water levels increased by storm surges have a lower probability of reaching the elevation of the fastland (bluff or dune) material to augment erosion. Secondly, the wave energy is distributed over a greater distance in the course of a tidal cycle.","PeriodicalId":106819,"journal":{"name":"Chesapeake Science","volume":"11 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"1977-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"34","resultStr":"{\"title\":\"Increasing shoreline erosion rates with decreasing tidal range in the Virginia Chesapeake Bay\",\"authors\":\"P. Rosen\",\"doi\":\"10.2307/1350594\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"The Virginia Chesapeake Bay has a large variation (200%) in tidal range (.36m to 1m) over a relatively short (120 km) distance. Analysis of a regional sampling of shoreline morphology and processes demonstrates that decreasing tidal ranges result in increasing long-term erosion rates. This results because larger tidal ranges form a higher elevation beach. Thus, in larger tidal range areas, water levels increased by storm surges have a lower probability of reaching the elevation of the fastland (bluff or dune) material to augment erosion. Secondly, the wave energy is distributed over a greater distance in the course of a tidal cycle.\",\"PeriodicalId\":106819,\"journal\":{\"name\":\"Chesapeake Science\",\"volume\":\"11 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"1977-12-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"34\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Chesapeake Science\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.2307/1350594\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Chesapeake Science","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.2307/1350594","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Increasing shoreline erosion rates with decreasing tidal range in the Virginia Chesapeake Bay
The Virginia Chesapeake Bay has a large variation (200%) in tidal range (.36m to 1m) over a relatively short (120 km) distance. Analysis of a regional sampling of shoreline morphology and processes demonstrates that decreasing tidal ranges result in increasing long-term erosion rates. This results because larger tidal ranges form a higher elevation beach. Thus, in larger tidal range areas, water levels increased by storm surges have a lower probability of reaching the elevation of the fastland (bluff or dune) material to augment erosion. Secondly, the wave energy is distributed over a greater distance in the course of a tidal cycle.
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