Black carbon in deep-sea sediments from the northeastern equatorial Pacific Ocean
DC Field | Value | Language |
---|---|---|
dc.contributor.author | 김동현 | - |
dc.contributor.author | 이용일 | - |
dc.contributor.author | 형기성 | - |
dc.contributor.author | 유찬민 | - |
dc.date.accessioned | 2020-07-16T13:51:29Z | - |
dc.date.available | 2020-07-16T13:51:29Z | - |
dc.date.created | 2020-02-11 | - |
dc.date.issued | 2011-12-08 | - |
dc.identifier.uri | https://sciwatch.kiost.ac.kr/handle/2020.kiost/27987 | - |
dc.description.abstract | Deep-sea sediment core is a good archive for understanding the land–ocean interactions via atmosphere, due to it is little influenced by fluvial and continental shelf processes. This study dealt with black carbon(BC) in a 328 cm-long piston core collected from the northeastern equatorial Pacific Ocean (16°12N, 125°59W), covering the last 15 Ma (Hyeong at al., 2004). BC is a common name of carbon continuum formed by incomplete combustion of fossil fuels and plant materials. Though it may react with ozone and produce water-soluble organic carbon, BC has commonly refractory nature. Thus BC in preindustrial sediment can be a tracer of forest-fire events. BC is purely terrestrial in origin, and is transported to marine environments by atmospheric and fluvial processes. Therefore, distribution of BC in deep-sea sediments could be used to understand atmospheric circulation. Chemical oxidation was used to determine BC in this study following Lim and Cachier (1996). Concentration of BC varies from 0.010% to 0.233% of total sediments. Mass accumulation rate (MAR) of BC ranged between 0.077 mg/cm^2/1000 yrs and 47.49 mg/cm^21000 yrs. It is noted that MAR in sediments younger than 8 Ma (av. 9.0 mg/cm^2/1000 yrs) is higher than that in sediments older than 8 Ma (av. 3.2 mg/cm^2/1000 yrs). Stable carbon isotope value of BC increases with time from the low δ13C value near 13 Ma until it | - |
dc.description.uri | 1 | - |
dc.language | English | - |
dc.publisher | American Geophysical Union | - |
dc.relation.isPartOf | AGU Fall Meeting 2011 | - |
dc.title | Black carbon in deep-sea sediments from the northeastern equatorial Pacific Ocean | - |
dc.type | Conference | - |
dc.citation.conferencePlace | US | - |
dc.citation.endPage | 1 | - |
dc.citation.startPage | 1 | - |
dc.citation.title | AGU Fall Meeting 2011 | - |
dc.contributor.alternativeName | 형기성 | - |
dc.contributor.alternativeName | 유찬민 | - |
dc.identifier.bibliographicCitation | AGU Fall Meeting 2011, pp.1 | - |
dc.description.journalClass | 1 | - |