DOI: 10.1002/2016GL071443
论文题名: Inertia-induced accumulation of flotsam in the subtropical gyres
作者: Beron-Vera F.J. ; Olascoaga M.J. ; Lumpkin R.
刊名: Geophysical Research Letters
ISSN: 0094-8330
EISSN: 1944-8061
出版年: 2016
卷: 43, 期: 23 起始页码: 12228
结束页码: 12233
语种: 英语
英文关键词: drifter
; drogue
; flotsam
; garbage
; inertia
; patch
Scopus关键词: Debris
; Drifter
; Drogue
; Flotsam
; Garbage
; Inertia
; Patch
; Tropics
英文摘要: Recent surveys of marine plastic debris density have revealed high levels in the center of the subtropical gyres. Earlier studies have argued that the formation of great garbage patches is due to Ekman convergence in such regions. In this work we report a tendency so far overlooked of drogued and undrogued drifters to accumulate distinctly over the subtropical gyres, with undrogued drifters accumulating in the same areas where plastic debris accumulate. We show that the observed accumulation is too fast for Ekman convergence to explain it. We demonstrate that the accumulation is controlled by finite-size and buoyancy (i.e., inertial) effects on undrogued drifter motion subjected to ocean current and wind drags. We infer that the motion of flotsam in general is constrained by similar effects. This is done by using a newly proposed Maxey-Riley equation which models the submerged (surfaced) drifter portion as a sphere of the fractional volume that is submerged (surfaced). ©2016. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85006839758&doi=10.1002%2f2016GL071443&partnerID=40&md5=64e9b1913fbee2809cbdddd5eef1d290
Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/9293
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 Atmospheric Sciences, Rosenstiel School of Marine and Atmospheric Science, University of Miami, Miami, FL, United States
Recommended Citation:
Beron-Vera F.J.,Olascoaga M.J.,Lumpkin R.. Inertia-induced accumulation of flotsam in the subtropical gyres[J]. Geophysical Research Letters,2016-01-01,43(23).