Wind-driven variability in longshore transport of SPM in the turbidity maximum zone along the Dutch coast

IF 2.1 3区地球科学 Q2 OCEANOGRAPHY

Continental Shelf Research Pub Date : 2025-01-29 DOI:10.1016/j.csr.2025.105421

Carola M. van der Hout , Rob Witbaard , Piet Hoekstra , Theo Gerkema

{"title":"Wind-driven variability in longshore transport of SPM in the turbidity maximum zone along the Dutch coast","authors":"Carola M. van der Hout , Rob Witbaard , Piet Hoekstra , Theo Gerkema","doi":"10.1016/j.csr.2025.105421","DOIUrl":null,"url":null,"abstract":"<div><div>Long-term measurements from a mooring off the Dutch coast, placed in the turbidity maximum zone (TMZ), are analyzed to study the temporal variability of the alongshore transport of SPM (Suspended Particulate Matter), covering a two-year period. In particular, the effect of wind speed and wind direction is investigated, as it is dominant over the tidal effect. The data reveal that the general net transport at the mooring location is northward; annually, the mean northward transport is 1 kton per meter in the cross-shore direction. For calm conditions, when wind speeds are less than 5 m/s, the overall effect of winds on the net transport diminishes to zero. Energetic conditions (wind speed higher than 5 m/s) are studied for a sequence of storms from opposing wind directions. Here, the gross tidal transports (i.e., transport during ebb or flood separately) show a delay with respect to the onset of the wind event, ranging from half a day to a day. The correlation between the net transport per tidal cycle and the wind characteristics during that cycle, is used to extrapolate the results to a 10-year period, using wind data from a nearby weather station. It is shown that annual transports of SPM can vary by a factor of two between years, due to different wind and wave conditions. Within a year the seasonal variability is larger, a factor of five exists between summer and winter months.</div></div>","PeriodicalId":50618,"journal":{"name":"Continental Shelf Research","volume":"286 ","pages":"Article 105421"},"PeriodicalIF":2.1000,"publicationDate":"2025-01-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Continental Shelf Research","FirstCategoryId":"89","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0278434325000214","RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"OCEANOGRAPHY","Score":null,"Total":0}

引用次数: 0

Abstract

Long-term measurements from a mooring off the Dutch coast, placed in the turbidity maximum zone (TMZ), are analyzed to study the temporal variability of the alongshore transport of SPM (Suspended Particulate Matter), covering a two-year period. In particular, the effect of wind speed and wind direction is investigated, as it is dominant over the tidal effect. The data reveal that the general net transport at the mooring location is northward; annually, the mean northward transport is 1 kton per meter in the cross-shore direction. For calm conditions, when wind speeds are less than 5 m/s, the overall effect of winds on the net transport diminishes to zero. Energetic conditions (wind speed higher than 5 m/s) are studied for a sequence of storms from opposing wind directions. Here, the gross tidal transports (i.e., transport during ebb or flood separately) show a delay with respect to the onset of the wind event, ranging from half a day to a day. The correlation between the net transport per tidal cycle and the wind characteristics during that cycle, is used to extrapolate the results to a 10-year period, using wind data from a nearby weather station. It is shown that annual transports of SPM can vary by a factor of two between years, due to different wind and wave conditions. Within a year the seasonal variability is larger, a factor of five exists between summer and winter months.

查看原文本刊更多论文

求助全文

约1分钟内获得全文求助全文

来源期刊

Continental Shelf Research 地学-海洋学

CiteScore

4.30

自引率

4.30%

发文量

136

审稿时长

6.1 months

期刊介绍： Continental Shelf Research publishes articles dealing with the biological, chemical, geological and physical oceanography of the shallow marine environment, from coastal and estuarine waters out to the shelf break. The continental shelf is a critical environment within the land-ocean continuum, and many processes, functions and problems in the continental shelf are driven by terrestrial inputs transported through the rivers and estuaries to the coastal and continental shelf areas. Manuscripts that deal with these topics must make a clear link to the continental shelf. Examples of research areas include: Physical sedimentology and geomorphology Geochemistry of the coastal ocean (inorganic and organic) Marine environment and anthropogenic effects Interaction of physical dynamics with natural and manmade shoreline features Benthic, phytoplankton and zooplankton ecology Coastal water and sediment quality, and ecosystem health Benthic-pelagic coupling (physical and biogeochemical) Interactions between physical dynamics (waves, currents, mixing, etc.) and biogeochemical cycles Estuarine, coastal and shelf sea modelling and process studies.