DOI: 10.1002/2016GL069335
论文题名: Significant anaerobic production of fluorescent dissolved organic matter in the deep East Sea (Sea of Japan)
作者: Kim J. ; Kim G.
刊名: Geophysical Research Letters
ISSN: 0094-8882
EISSN: 1944-8613
出版年: 2016
卷: 43, 期: 14 起始页码: 7609
结束页码: 7616
语种: 英语
英文关键词: colored dissolved organic matter
; East Sea
; FDOM production
; fluorescent dissolved organic matter
; humic like
; PARAFAC
Scopus关键词: Anoxic sediments
; Biogeochemistry
; Dissolution
; Fluorescence
; Geographical distribution
; Organic compounds
; Colored dissolved organic matter
; Dissolved organic matters
; East Sea
; Humic like
; PARAFAC
; Biological materials
; anaerobiosis
; biogenic material
; deep sea
; dissolved organic matter
; factor analysis
; geographical distribution
; marine sediment
; oxidation
; spectroscopy
; water column
; Pacific Ocean
; Sea of Japan
英文摘要: The distribution of fluorescent dissolved organic matter (FDOM) in the East Sea (Sea of Japan) was examined by excitation-emission matrix spectroscopy with parallel factor analysis (PARAFAC). Humic-like FDOM (FDOMH) increased with depth and was significantly correlated with Apparent Oxygen Utilization (AOU), indicating that FDOMH in the deep water is mainly produced by oxidation of organic matter. In addition, a surprisingly large excess of FDOMH relative to that expected from the observed AOU was found from 1000 m to the bottom (up to 3500 m). Based on the high-resolution geographical distribution and characteristics of FDOM in the East Sea, we conclude that this excess likely originates from anaerobic FDOMH production in subsurface bottom sediments. This FDOMH flux accounts for 8–15% of the total FDOM production in the water column. Our results suggest that anaerobic activities in subsurface sediments are an important hidden source of FDOM in the ocean. ©2016. The Authors. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84979009455&doi=10.1002%2f2016GL069335&partnerID=40&md5=c6ebfe502b8c36243a4c2b0e49450318
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/9845
Appears in Collections: 科学计划与规划 气候变化与战略
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作者单位: School of Earth and Environmental Sciences/Research Institute of Oceanography, Seoul National University, Seoul, South Korea
Recommended Citation:
Kim J.,Kim G.. Significant anaerobic production of fluorescent dissolved organic matter in the deep East Sea (Sea of Japan)[J]. Geophysical Research Letters,2016-01-01,43(14).