Numerical modeling of early diagenetic processes in Haiyang 4 Area in the northern slope of the South China Sea

doi:10.1007/s12665-017-6784-5

GIEC OpenIR > 中国科学院广州能源研究所

	Numerical modeling of early diagenetic processes in Haiyang 4 Area in the northern slope of the South China Sea
	Liu, Lihua 1; Luff, Roger 2; Shao, Haibing 3,4; Kolditz, Olaf 3; Wu, Nengyou 5,6
	2017-07-01
发表期刊	ENVIRONMENTAL EARTH SCIENCES
卷号	76 期号:13
摘要	Early diagenesis affects the distribution of solutes and minerals in unconsolidated sediments. The investigation of diagenesis is critical to understanding the geochemical transformation and benthic fluxes of elements. During the cruise mission SO-177 in 2004, gravity coring samples were recovered in the Haiyang 4 Area of the northern slope of the South China Sea (SCS). The geochemical concentrations in interstitial water were determined onboard. The 1D C.CANDI reactive transport software was used to model the early diagenesis processes at four sites: 56-GC-3, 70-GC-9, 94-GC-11, and 118-GC13. All of the simulations reproduced concentration profiles that matched the measurements with the implemented geochemical reactions. The degradation of organic carbon and anaerobic oxidation of methane (AOM) primarily determine the distribution of solutes in the working area. The degradation is active in the top 150 cm, and AOM is vigorous at depths below 200 cm. The local advective flux, sediment rate, and kinetic reaction constants of organic matter, methane and sulfate were calibrated based on the existing concentrations of pore water solutes. Geochemical reactions in this area occur in considerably deeper layers compared to depths cited in the literature. The model results provide evidence for the existence of deep hydrocarbon reservoirs that provide methane to the upper sediments.
文章类型	Article
关键词	Early Diagenesis Organic Matter Degradation Aom The norThern Slope Of The South Chinasea
WOS标题词	Science & Technology ; Life Sciences & Biomedicine ; Physical Sciences
DOI	10.1007/s12665-017-6784-5
研究领域[WOS]	Environmental Sciences & Ecology ; Geology ; Water Resources
关键词[WOS]	CARBONATE CRUST FORMATION ; COLD VENT SITES ; ORGANIC-CARBON ; SURFACE SEDIMENTS ; MARINE-SEDIMENTS ; HYDRATE RIDGE ; NUTRIENT DIAGENESIS ; ANAEROBIC OXIDATION ; SEASONAL-VARIATIONS ; CONTINENTAL-MARGIN
收录类别	SCI
语种	英语
项目资助者	National Natural Science Foundation of China(41376076) ; Chinese Academy of Sciences(GJHZ1404)
WOS类目	Environmental Sciences ; Geosciences, Multidisciplinary ; Water Resources
WOS记录号	WOS:000405283600008
引用统计
文献类型	期刊论文
条目标识符	http://ir.giec.ac.cn/handle/344007/14166
专题	中国科学院广州能源研究所
作者单位	1.Chinese Acad Sci, Guangzhou Inst Energy Convers, Key Lab Gas Hydrate, Guangzhou 510640, Guangdong, Peoples R China 2.Messnetzknoten Rendsburg, German Fed Off Radiat Protect, Rendsburg, Germany 3.UFZ Helmholtz Ctr Environm Res, Permoserstr 15, D-04318 Leipzig, Germany 4.Freiberg Univ Min & Technol, Freiberg, Germany 5.Qingdao Inst Marine Geol, Minist Land & Resources, Key Lab Gas Hydrate, Qingdao 266071, Peoples R China 6.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Mineral Resources, Qingdao 266071, Peoples R China
推荐引用方式 GB/T 7714	Liu, Lihua,Luff, Roger,Shao, Haibing,et al. Numerical modeling of early diagenetic processes in Haiyang 4 Area in the northern slope of the South China Sea[J]. ENVIRONMENTAL EARTH SCIENCES,2017,76(13).
APA	Liu, Lihua,Luff, Roger,Shao, Haibing,Kolditz, Olaf,&Wu, Nengyou.(2017).Numerical modeling of early diagenetic processes in Haiyang 4 Area in the northern slope of the South China Sea.ENVIRONMENTAL EARTH SCIENCES,76(13).
MLA	Liu, Lihua,et al."Numerical modeling of early diagenetic processes in Haiyang 4 Area in the northern slope of the South China Sea".ENVIRONMENTAL EARTH SCIENCES 76.13(2017).