Redai dili (Sep 2023)
Research Progress on Wave-Beach-Dune Interactions
Abstract
Searching the key words' wave-beach-dune interactions' in Web of Science, nearly 100 domestical and overseas publications since the 1980s have been analyzed and reviewed. This stuyd summarizes major advances at different temporal-spatial scales. The issues of integration between them are clarified by sorting the conceptual models and categorizing development stages. Additionally, research opportunities and challenges are identified. Studies on wave-beach-dune interactions have been initiated since 1980s and developed through the following three stages: theory proposed and improved, expansion of study areas, and in-depth exploration. The conceptual models have been developed from simple to reliable models across a range of micro-, meso-, and macro-scales. Studies were initially conducted by taking advantage of only field survey and bathymetry maps. Nowadays, collaborated technology and methods have been applied in studying coastal landforms through in-situ field monitoring, wind tunnel trial, 3S technologies, and numerical simulation. Study areas extended and expanded from southeast Australian coasts to Europe, South and North America, and Asian coasts. Although plenty of relevant reports have been published, some issues exist. Owing to their highly temporal-spatial heterogeneity, it is difficult to find a universal conceptual model for the worldwide coastal dune systems. At the micro-scale, as the complex process of wave-tide hydrological and aeolian dynamic imposed on surfzone-beach-dune and limitation of monitoring data utility, the existing theoretical model cannot completely reveal the mechanism of the terrestrial-marine interface and beach-dune landform response and feedback to wind dynamics. At the mesoscale, many mechanisms of dune response to storm surges have been proposed, but few are from the perspective of the surfzone-beach-dune as a whole system. More case studies based on observation are needed, which will benefit in-depth exploration. Furthermore, more long-term monitoring and refined models are required to build the bridge between fundamental process-response dynamics (events scale) and medium-long-term landforms topography changes and evolution. At the macroscale, given the alongshore sediment transport and supply, sea level rise rate, and landward and seaward sediment transport, prediction models of coastal geomorphological changes induced by sea level rise should be tested and supported by multi-temporal-spatial observation and monitoring data. Future studies will continue collaborating the historical reports and site monitoring techniques with high-resolution images interpretation to comprehensively understand the relationships between dynamic-response process and landforms geomorphology evolution by integration of environmental variables and surfzone, beach, and dune landforms investigation. The numerical simulation will reveal the mechanisms of wave-beach-dune interactions across micro-, meso-, and macro-scales and redefine theoretical concepts.
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