DOI: 10.1016/j.epsl.2017.11.008
Scopus记录号: 2-s2.0-85033725050
论文题名: Global assessment of benthic nepheloid layers and linkage with upper ocean dynamics
作者: Gardner W.D. ; Richardson M.J. ; Mishonov A.V.
刊名: Earth and Planetary Science Letters
ISSN: 0012821X
出版年: 2018
卷: 482 起始页码: 126
结束页码: 134
语种: 英语
英文关键词: benthic nepheloid layers
; benthic storms
; eddy kinetic energy
; erosion
; particulate matter
; resuspension
Scopus关键词: Boundary layers
; Dynamics
; Energy dissipation
; Erosion
; Kinetic energy
; Kinetics
; Meteorological instruments
; Ocean currents
; Oceanography
; Bottom boundary layer
; Continental margin
; Deep ocean sediments
; Eddy kinetic energy
; Nepheloid layers
; Particle concentrations
; Particulate Matter
; Re-suspension
; Deep sea mining
; benthos
; continental margin
; eddy
; erosion rate
; kinetic energy
; nepheloid layer
; particulate matter
; resuspension
; seafloor
; sediment transport
; upper ocean
; Argentine Basin
; Atlantic Ocean
; Atlantic Ocean (Northwest)
; Atlantic Ocean (South)
; South Africa
; Southern Ocean
; Argentina silus
英文摘要: Global maps of the maximum bottom concentration, thickness, and integrated particle mass in benthic nepheloid layers are published here to support collaborations to understand deep ocean sediment dynamics, linkage with upper ocean dynamics, and assessing the potential for scavenging of adsorption-prone elements near the deep ocean seafloor. Mapping the intensity of benthic particle concentrations from natural oceanic processes also provides a baseline that will aid in quantifying the industrial impact of current and future deep-sea mining. Benthic nepheloid layers have been mapped using 6,392 full-depth profiles made during 64 cruises using our transmissometers mounted on CTDs in multiple national/international programs including WOCE, SAVE, JGOFS, CLIVAR-Repeat Hydrography, and GO-SHIP during the last four decades. Intense benthic nepheloid layers are found in areas where eddy kinetic energy in overlying waters, mean kinetic energy 50 m above bottom (mab), and energy dissipation in the bottom boundary layer are near the highest values in the ocean. Areas of intense benthic nepheloid layers include the Western North Atlantic, Argentine Basin in the South Atlantic, parts of the Southern Ocean and areas around South Africa. Benthic nepheloid layers are weak or absent in most of the Pacific, Indian, and Atlantic basins away from continental margins. High surface eddy kinetic energy is associated with the Kuroshio Current east of Japan. Data south of the Kuroshio show weak nepheloid layers, but no transmissometer data exist beneath the Kuroshio, a deficiency that should be remedied to increase understanding of eddy dynamics in un-sampled and under-sampled oceanic areas. © 2017 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/110113
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: Texas A&M University, College Station, TX 77843, United States; Department of Oceanography, Texas A&M University, College Station, TX 77843, United States; Cooperative Institute for Climate and Satellites (CICS), University of Maryland, National Centers for Environmental Information (NCEI), NOAA affiliate, Silver Spring, MD 20910, United States
Recommended Citation:
Gardner W.D.,Richardson M.J.,Mishonov A.V.. Global assessment of benthic nepheloid layers and linkage with upper ocean dynamics[J]. Earth and Planetary Science Letters,2018-01-01,482