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Physical controls on the seasonal migration of the North Pacific transition zone chlorophyll front

dc.contributor.author Ayers, JM
dc.contributor.author Lozier, MS
dc.date.accessioned 2011-06-21T17:31:27Z
dc.date.issued 2010-01-01
dc.identifier.uri https://hdl.handle.net/10161/4516
dc.description.abstract The large seasonal migration of the transition zone chlorophyll front (TZCF) is of interest because a number of marine fauna, both commercial and endangered, appear to track it. Herein we examine the physical dynamics driving this seasonal migration of the TZCF. Vertical processes, traditionally viewed as controlling the dynamical supply of nutrients to surface waters, prove insufficient to explain seasonal variations in nutrient supply to the transition zone. Instead, we find that the horizontal Ekman transport of nutrients from higher latitudes drives the TZCF's southward migration. The estimated horizontal transport of nitrate supports up to 40% of new primary productivity in the region annually and nearly all of new primary productivity in the winter. The significance of horizontal advection to the North Pacific transition zone supports revising the paradigm that nutrients are supplied to surface waters from below. © 2010 by the American Geophysical Union.
dc.language.iso en_US
dc.publisher American Geophysical Union (AGU)
dc.relation.ispartof Journal of Geophysical Research: Oceans
dc.relation.isversionof 10.1029/2009JC005596
dc.title Physical controls on the seasonal migration of the North Pacific transition zone chlorophyll front
dc.title.alternative
dc.type Journal article
duke.contributor.id Lozier, MS|0113439
dc.description.version Version of Record
duke.date.pubdate 2010-5-4
duke.description.issue
duke.description.volume 115
dc.relation.journal Journal of Geophysical Research-Oceans
pubs.begin-page C05001
pubs.issue 5
pubs.organisational-group Duke
pubs.organisational-group Earth and Ocean Sciences
pubs.organisational-group Nicholas School of the Environment
pubs.publication-status Published
pubs.volume 115
dc.identifier.eissn 2169-9291


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