DOI: 10.1016/j.epsl.2017.10.030
Scopus记录号: 2-s2.0-85033707976
论文题名: Sedimentary evidence for enhanced hydrological cycling in response to rapid carbon release during the early Toarcian oceanic anoxic event
作者: Izumi K. ; Kemp D.B. ; Itamiya S. ; Inui M.
刊名: Earth and Planetary Science Letters
ISSN: 0012821X
出版年: 2018
卷: 481 起始页码: 162
结束页码: 170
语种: 英语
英文关键词: atmospheric warming
; carbon isotope
; hydrological cycling
; sedimentology
; Toarcian
Scopus关键词: Biospherics
; Sediment transport
; Sedimentology
; Atmospheric warming
; Carbon isotope composition
; Carbon isotope excursions
; Carbon isotopes
; Environmental response
; hydrological cycling
; Sedimentological analysis
; Toarcian
; Isotopes
; anoxic conditions
; carbon cycle
; carbon isotope
; global warming
; hydrological cycle
; isotopic composition
; paleoceanography
; sedimentology
; Toarcian
; Europe
; Japan
英文摘要: A pronounced excursion in the carbon-isotope composition of biospheric carbon and coeval seawater warming during the early Toarcian (∼183 Ma) has been linked to the large-scale transfer of 12C-enriched carbon to the oceans and atmosphere. A European bias in the distribution of available data means that the precise pattern, tempo and global expression of this carbon cycle perturbation, and the associated environmental responses, remain uncertain. Here, we present a new cm-scale terrestrial-dominated carbon-isotope record through an expanded lower Toarcian section from Japan that displays a negative excursion pattern similar to marine and terrestrial carbon-isotope records documented from Europe. These new data suggest that 12C-enriched carbon was added to the biosphere in at least one rapid, millennial-scale pulse. Sedimentological analysis indicates a close association between the carbon-isotope excursion and high-energy sediment transport and enhanced fluvial discharge. Together, these data support the hypothesis that a sudden strengthening of the global hydrological cycle occurred in direct and immediate response to rapid carbon release and atmospheric warming. © 2017 Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/110172
Appears in Collections: 影响、适应和脆弱性 气候变化事实与影响
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作者单位: Faculty & Graduate School of Education, Chiba University, 1-33 Yayoi-cho, Inage-ku, Chiba-shi, Chiba, 263-8522, Japan; School of Geosciences, University of Aberdeen, Old Aberdeen, Aberdeen, AB24 3UE, United Kingdom; School of Science and Engineering, Kokushikan University, 4-28-1 Setagaya, Setagaya-ku, Tokyo, 154-8515, Japan
Recommended Citation:
Izumi K.,Kemp D.B.,Itamiya S.,et al. Sedimentary evidence for enhanced hydrological cycling in response to rapid carbon release during the early Toarcian oceanic anoxic event[J]. Earth and Planetary Science Letters,2018-01-01,481