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동해 울릉분지 가스하이드레이트 부존지역에서의

Title
동해 울릉분지 가스하이드레이트 부존지역에서의
Other Titles
Characterizations of molecular biomarkers of microorganism related to methane in gas hydrate-bearing sediments of Ulleung Basin,
Author
안용천
Alternative Author(s)
An, Yong Chun
Advisor(s)
신경훈
Issue Date
2012-02
Publisher
한양대학교
Degree
Master
Abstract
Gas hydrate has an importance as new alternative energy in the future and it is necessary to understand microorganism activity related to the production and consumption of the gas hydrate and methane biogeochemical cycle. In this study, we investigated origin and composition of sedimentary organic matter related to the production of gas hydrate in the gas hydrate-bearing core sediment(St.12-2) and non bearing core sediment(St.21) using carbon and nitrogen stable isotope ratio and C/N ratio. In addition, the methane related biomarker abundances and their 13C isotopic signatures were determined in the sediment of both cores. Our study showed that the core sediment at St.12-2 has higher concentration of each AOM biomarker than St.21. Also, the biomarker peaks are coincided with bacteria community structure of delta-proteobacteria in 12-2 core, demonstrating that sulfate-methane transition zone should be corresponded to the sediment core depth (130cm~180cm). In 12-2 core, the stable carbon isotope of methane indicates mostly biogenic origin. Archaeol / sn-2-hydroxyarchaeol ratio shows that in this interval, ANME-1 consortium was dominated in the corresponding interval.
URI
https://repository.hanyang.ac.kr/handle/20.500.11754/137153http://hanyang.dcollection.net/common/orgView/200000418809
Appears in Collections:
GRADUATE SCHOOL[S](대학원) > ENVIRONMENTAL MARINE SCIENCES(해양환경과학과) > Theses (Master)
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