DOI: 10.1002/2016GL070021
论文题名: Modern deposition rates and patterns of organic carbon burial in Fiordland, New Zealand
作者: Ramirez M.T. ; Allison M.A. ; Bianchi T.S. ; Cui X. ; Savage C. ; Schüller S.E. ; Smith R.W. ; Vetter L.
刊名: Geophysical Research Letters
ISSN: 0094-8399
EISSN: 1944-8130
出版年: 2016
卷: 43, 期: 22 起始页码: 11768
结束页码: 11776
语种: 英语
英文关键词: Fiordland
; fjords
; New Zealand
; organic carbon
; sediment
Scopus关键词: Carbon dioxide
; Deposition
; Deposition rates
; Feedback
; Organic carbon
; Stratigraphy
; Depositional process
; Fiordland
; Fjords
; New zealand
; Organic carbon burial
; Sediment accumulation
; Sedimentary textures
; Spatial heterogeneity
; Sediments
英文摘要: Fjords are disproportionately important for global organic carbon (OC) burial relative to their spatial extent and may be important in sequestering atmospheric CO2, providing a negative climate feedback. Within fjords, multiple locally variable delivery mechanisms control mineral sediment deposition, which in turn modulates OC burial. Sediment and OC sources in Fiordland, New Zealand, include terrigenous input at fjord heads, sediment reworking over fjord-mouth sills, and landslide events from steep fjord walls. Box cores were analyzed for sedimentary texture, sediment accumulation rate, and OC content to evaluate the relative importance of each delivery mechanism. Sediment accumulation was up to 3.4 mm/yr in proximal and distal fjord areas, with lower rates in medial reaches. X-radiograph and 210Pb stratigraphy indicate mass wasting and surface-sediment bioturbation throughout the fjords. Sediment accumulation rates are inversely correlated with %OC. Spatial heterogeneity in sediment depositional processes and rates is important when evaluating OC burial within fjords. ©2016. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85002705238&doi=10.1002%2f2016GL070021&partnerID=40&md5=4f02928f2f2acd90f0de2ee3614ab6a6
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/9362
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: Department of Earth and Environmental Sciences, Tulane University, New Orleans, LA, United States
Recommended Citation:
Ramirez M.T.,Allison M.A.,Bianchi T.S.,et al. Modern deposition rates and patterns of organic carbon burial in Fiordland, New Zealand[J]. Geophysical Research Letters,2016-01-01,43(22).