Geochemical environment of continental shelf and slope of Hupo and Ulleung Basin, East/Japan Sea

Title
Geochemical environment of continental shelf and slope of Hupo and Ulleung Basin, East/Japan Sea
Author(s)
최기영; 김창준; 김영일
KIOST Author(s)
Kim, Chang Joon(김창준)KIM, YOUNG-IL(김영일)
Publication Year
2015-08-20
Abstract
Porewater nutrients and total organic carbon (TOC) were measured in core sediments in order to understand geochemical environment of continental shelf and slope of Hupo and Ulleung basin in East/Japan Sea. Nutrients profiles in pore water show that denitrification were active predominately in the upper 2~4cm sediment layer in continental shelf and continental slope whereasup to 8cm in Ulleung basin. These differences suggested that the sedimentary organic matter is more actively decomposed at the basin than at continental shelf and continental slope.Concentrations of TOC in the core sediments were higher in the continental shelf stations than the continental slope stations and also represented over 2% in the surface sediment at basin stationdue to regional high organic carbon flux.The C/N ratios of organic matter in the study area indicated that the source of organic matter was a mixture of terrestrial and biogenic origin at continental shelf and continental slope stationsand derived from marine sources at basin station.how that denitrification were active predominately in the upper 2~4cm sediment layer in continental shelf and continental slope whereasup to 8cm in Ulleung basin. These differences suggested that the sedimentary organic matter is more actively decomposed at the basin than at continental shelf and continental slope.Concentrations of TOC in the core sediments were higher in the continental shelf stations than the continental slope stations and also represented over 2% in the surface sediment at basin stationdue to regional high organic carbon flux.The C/N ratios of organic matter in the study area indicated that the source of organic matter was a mixture of terrestrial and biogenic origin at continental shelf and continental slope stationsand derived from marine sources at basin station.
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/25340
Bibliographic Citation
Goldschmidt 2015, pp.545, 2015
Publisher
Cambridge
Type
Conference
Language
English
Publisher
Cambridge
Related Researcher
Research Interests

Marine environmentology,Marine environmentology,Organic chemistry,해양환경학,화학해양학,유기화학

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