Experimental study of non-buoyant microplastic transport beneath breaking irregular waves on a live sediment bed

Guler H. G., Larsen B. E., Quintana O., Goral K. D., Carstensen S., Christensen E. D., ...Daha Fazla

Marine Pollution Bulletin, cilt.181, 2022 (SCI-Expanded) identifier identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 181
  • Basım Tarihi: 2022
  • Doi Numarası: 10.1016/j.marpolbul.2022.113902
  • Dergi Adı: Marine Pollution Bulletin
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, PASCAL, Aerospace Database, Aquatic Science & Fisheries Abstracts (ASFA), Artic & Antarctic Regions, BIOSIS, CAB Abstracts, Chemical Abstracts Core, Chimica, Communication Abstracts, Compendex, EMBASE, Environment Index, Geobase, MEDLINE, Metadex, Pollution Abstracts, Veterinary Science Database, Civil Engineering Abstracts
  • Anahtar Kelimeler: Cross-shore, Irregular waves, Live bed, Microplastic particles, Non-buoyant
  • Orta Doğu Teknik Üniversitesi Adresli: Evet

Özet

This paper presents experimental results on the cross-shore distribution of non-buoyant microplastic particles under irregular waves propagating, shoaling and breaking on live sediment sloping beds. Eighteen microplastic particle groups having various shapes, densities, and sizes are tested. The experiments consider two initial bottom configurations corresponding to a (i) plane bed and (ii) pre-developed singly-barred profile (more representative of field conditions). Four different microplastic accumulation hotspots are identified: offshore of the breaker bar, at the breaker bar, the plateau region between the breaker bar and beach, and the beach. It is found that the accumulation patterns primarily fall within three different particle Dean number regimes. The importance of plunger-type breaking waves for both on and offshore transport of microplastic particles is highlighted.