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dc.contributor.authorOkon, L.-U.E.
dc.contributor.authorJayakumar, S.
dc.contributor.authorKumari, Suneeta
dc.contributor.authorHemanath, L.
dc.date.accessioned2023-04-12
dc.date.accessioned2023-07-17T15:32:50Z
dc.date.available2023-02-25
dc.date.available2023-07-17T15:32:50Z
dc.date.issued2023
dc.identifier.citationGeo-Marine Letters, vol.43(1); 2023; Article no: 3
dc.identifier.issn1432-1157
dc.identifier.otherhttps://link.springer.com/article/10.1007/s00367-023-00746-1
dc.identifier.urihttps://doi.org/10.1007/S00367-023-00746-1
dc.identifier.urihttp://drs.nio.res.in/drs/handle/2264/9043
dc.description2.267
dc.description.abstractLocal and regional climatic pressures influence coastal geomorphic systems on different spatial and temporal scales. Within these zones of variation, systems and environmental processes interact. They can recreate sediment movement patterns and anticipate environmental evolution. This study utilises a non-parametric end-member modelling analysis (EMMA) as a deterministic approach for unmixing grain sizes into geologically relevant populations. The aim is to characterise seasonal grain size distribution variation and link seasonal end members to proximal sources. A 5-year analysis of seasonal data from 19 open-coast beaches is adopted in the North and South Goa coastal area. End-members (EMs) are assigned based on grain size modal classes of 32-63 �m (EM1), 63-125 �m (EM2), 125-250 �m (EM3), and 250-500 �m (EM4), corresponding to coarse silt, very fine sand, fine sand, and medium sand respectively. In response to the current hydrodynamic forcings, it is projected that the surface sediments analysed have been reworked, sorted, and redistributed. While the spatial trend of EM distribution indicates an abundance of EM2 and EM3 along the coast, the variability in EMs across seasons shows that the Southwest and Northeast monsoons significantly influence the distributions of sediments along the Goa Coast, and the underlying EMs in the sediments bear the imprint of the interaction of these two seasons� dominant forces.
dc.languageen
dc.publisherSpringer
dc.relation.isreferencedbySCI
dc.rightsOnly the author version of the copright reserved papers uploaded. Contact drs@nio.org for any complaints regarding copyright violations
dc.titleSediment dynamics of tropical open coast beaches, central west coast of India: implications of spatio-temporal variability
dc.typeJournal Article
dc.affiliation.authorCSIR-National Institute of Oceanography, Dona Paula, Goa, India


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