HEADLAND AND WAVE CLIMATE CONTROLS ON THE FORMATION AND SHAPING OF THE OUTER CAPE COD COASTLINE
HEADLAND AND WAVE CLIMATE CONTROLS ON THE FORMATION AND SHAPING OF THE OUTER CAPE COD COASTLINE
复制标题
岬角和波浪气候对科德角外海岸线形成和塑造的控制
DOI：
10.1142/9789811204487_0193
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发表时间：
2019
期刊：
影响因子：
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通讯作者：
BIOLCHI, LUIS GERMANO
中科院分区：
文献类型：
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作者：
ASHTON, ANDREW;PALERMO, ROSE;SCHADT, JAMES;BIOLCHI, LUIS GERMANO
向北移动，科德角海岸的海岸线向西弯曲，向北过渡到面向北的海滩。类似地，当侵蚀崖壁提供的沉积物向上漂移时，侵蚀转变为增生。为了更好地理解沿岸沉积物运输是如何塑造这个海岸的，我们提出了两个与科德角有关的吐痰生长的分析。首先，我们分析了波浪气候衍生的指标，以检查现代波浪气候的输运趋势是否与最近引入的吐槽生长概念模型一致。其次，为了更好地理解高侵蚀悬崖对海岸线延伸的影响，我们提出的建模结果表明，侵蚀岬角的海岸线预计将在很长一段时间内继续旋转。最有趣的是，模型结果还表明，对于较大的悬崖，吐槽的增长应该更慢。虽然这样大的悬崖似乎能够提供大量的沉积物，但通过局部减缓侵蚀，这些悬崖实际上减少了向海岬下游供应的沉积物。
Moving northwards, the coast of Cape Cod coast curves—shorelines that face the west transition to northward facing beaches. Similarly, erosion changes to accretion as sediment supplied from eroding bluffs deposits updrift. To better understand how alongshore sediment transport shapes this coast, we present two analyses of spit growth relevant to Cape Cod. First, we analyze wave-climate-derived metrics to check whether transport trends for the modern wave climate are consistent with a recently introduced conceptual model of spit growth. Second, to better understand the influence of high eroding bluffs on shoreline extension, we present modeling results that suggest the shoreline of an eroding headland is expected to continue to rotate over long periods of time. Most interestingly, model results also suggest that spit growth should be slower for larger bluffs. Although such large bluffs would seem to be capable of supplying large quantities of sediment, by locally slowing erosion, these bluffs actually reduce sediment supplied downdrift of the headland.