Distribution and Characteristics of Sandy Sediments along the Northeastern Continental Shelf of Korea in the East Sea

Kim, S.-R.; Chun, J.-H.; Um, I.-K., and Cukur, D., 2020. Distribution and characteristics of sandy sediments along the northeastern continental shelf of Korea in the East Sea. In: Malvárez, G. and Navas, F. (eds.), Global Coastal Issues of 2020. Journal of Coastal Research, Special Issue No. 95, pp....

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Bibliographic Details
Published inJournal of coastal research Vol. 95; no. sp1; pp. 532 - 536
Main Authors Kim, So-Ra, Chun, Jong-Hwa, Um, In-Kwon, Cukur, Deniz
Format Journal Article
LanguageEnglish
Published Fort Lauderdale Coastal Education and Research Foundation 26.05.2020
Allen Press Publishing
Allen Press Inc
Subjects
Coastal currents
Coastal inlets
Coastal research
Composition
Continental shelves
Distribution
Feldspars
Geology
GEOMORPHOLOGY
Grain size
Mica
Mineral composition
Minerals
Particle size
Quartz
Rivers
Sandy surface sediments
Sediment
Sediment samplers
Sediment samples
Sediments
Shelf edge
small rivers
Substrates
South Korea
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Summary:Kim, S.-R.; Chun, J.-H.; Um, I.-K., and Cukur, D., 2020. Distribution and characteristics of sandy sediments along the northeastern continental shelf of Korea in the East Sea. In: Malvárez, G. and Navas, F. (eds.), Global Coastal Issues of 2020. Journal of Coastal Research, Special Issue No. 95, pp. 532–536. Coconut Creek (Florida), ISSN 0749-0208. In this study, the distribution and provenance of sandy surface sediments were investigated along the northeastern continental shelf of Korea. A total of 154 surface sediment samples from river, beach, continental shelf and shelf edge substrates were collected and analyzed for their grain size and mineral composition. Coarse-grained sandy sediments (mean grain size, –1.3 to 1.0 φ) showed that the inner shelf and shelf break were clearly separated by outer shelf silt sediment (mean grain size, ∼5 φ). The mineral composition of continental shelf sandy sediments differed between Gangneung and Donghae sites. Sandy sediments from Gangneung site consist mainly of quartz, feldspar, and mica, whereas those from Donghae site are composed chiefly of opaque minerals, including quartz and feldspar. Differences in mineral composition between the Gangneung and Donghae sites reflect the influence of geology on land. Sandy sediments were supplied directly to shelf edges during the low stand by small rivers, and not mixed by coastal currents.
ISSN:0749-0208
1551-5036
DOI:10.2112/SI95-103.1