Historical Shoreline Changes as Indication of Geomorphic Phases in St Ives and Padstow Bays of Southwest England

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• 作者：Temitope D. Timothy Oyedotun
• 关键词：St Ives ; Hayle ; Padstow ; Camel ; Equilibrium ; Disequilibrium ; Geomorphic system
• 刊名：Environmental Processes
• 出版年：2017
• 出版时间：March 2017
• 年：2017
• 卷：4
• 期：1
• 页码：273-282
• 全文大小：
• 刊物类别：Environmental Science and Engineering; Environmental Management; Waste Management/Waste Technology;
• 刊物主题：Environmental Science and Engineering; Environmental Management; Waste Management/Waste Technology; Water Quality/Water Pollution;
• 出版者：Springer International Publishing
• ISSN：2198-7505
• 卷排序：4

文摘

This study aims to examine the temporal pattern of shoreline changes as indication of geomorphic phases. Selected individual transects from the compartmentalised sections of the St Ives and Padstow systems were shortlisted for examination. Here, four phases of geomorphic response were specifically identified in the St Ives/Hayle system and three phases in the Padstow/Camel system. Despite the exposure of the systems to the same regional climatic and environmental conditions, they responded differently over the historical time-scale. The only constant response in all the estuaries is landward recession of the low water shoreline. The lack of temporal conformity to changes across all the coastal systems, where rates and directions of change occur at different periods throughout the history considered, confirmed that other factors beyond climate change or climate forcing are responsible for site-specific response, adjustment and behaviour. These other factors are structural, such as the shape and orientation of the bedrock valley and embayment, or anthropogenic, such as the construction of training walls and establishment of some sections of the systems as Sites of Specific Scientific Interests (SSSIs).