Washover fan deposits resulting from perigean spring tides: An example from Cape Cod, Massachusetts, USA

IF 3.1 2区地球科学 Q2 GEOGRAPHY, PHYSICAL

Geomorphology Pub Date : 2024-11-26 DOI:10.1016/j.geomorph.2024.109536

Katherine A. Castagno , Eliza J. Fitzgerald , Kaitlyn Button , Petra Zuñiga , Tommy Tucker , Timothy Smith , Mark Borrelli

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引用次数: 0

Abstract

In early 2021, the dune at Duck Harbor Beach (Wellfleet, MA, USA) was overtopped by high water levels, forming a washover fan that continues to grow through persistent overwash events. Overwash events occur near-monthly on most spring tides, regardless of weather, and have occurred for nearly four years. This is unique because the vast majority of washover fans occur because of storms and generally build in elevation requiring increasing water levels for overwash to occur. The overwash has salt-killed ~48.5 ha of trees and shrubs, and the system has begun to transition from freshwater to saltwater. We document the development of this tidal washover fan, including a detailed examination of changes in elevation and grain size during the early January 2022 events. Understanding how this system has developed will inform our understanding of the fate of other low-lying coastal areas, which are growing increasingly vulnerable to the effects of sea-level rise and ecosystem change.

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来源期刊

Geomorphology 地学-地球科学综合

CiteScore

8.00

自引率

10.30%

发文量

309

审稿时长

3.4 months

期刊介绍： Our journal''s scope includes geomorphic themes of: tectonics and regional structure; glacial processes and landforms; fluvial sequences, Quaternary environmental change and dating; fluvial processes and landforms; mass movement, slopes and periglacial processes; hillslopes and soil erosion; weathering, karst and soils; aeolian processes and landforms, coastal dunes and arid environments; coastal and marine processes, estuaries and lakes; modelling, theoretical and quantitative geomorphology; DEM, GIS and remote sensing methods and applications; hazards, applied and planetary geomorphology; and volcanics.