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

Publication ,  Journal Article
Ayers, JM; Lozier, MS
Published in: Journal of Geophysical Research: Oceans
January 1, 2010

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.

Duke Scholars

Published In

Journal of Geophysical Research: Oceans

DOI

EISSN

2169-9291

Publication Date

January 1, 2010

Volume

115

Issue

5

Related Subject Headings

  • 3709 Physical geography and environmental geoscience
  • 3708 Oceanography
  • 3706 Geophysics
  • 0406 Physical Geography and Environmental Geoscience
  • 0405 Oceanography
  • 0404 Geophysics
 

Citation

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MLA
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Ayers, J. M., & Lozier, M. S. (2010). Physical controls on the seasonal migration of the North Pacific transition zone chlorophyll front. Journal of Geophysical Research: Oceans, 115(5). https://doi.org/10.1029/2009JC005596
Ayers, J. M., and M. S. Lozier. “Physical controls on the seasonal migration of the North Pacific transition zone chlorophyll front.” Journal of Geophysical Research: Oceans 115, no. 5 (January 1, 2010). https://doi.org/10.1029/2009JC005596.
Ayers JM, Lozier MS. Physical controls on the seasonal migration of the North Pacific transition zone chlorophyll front. Journal of Geophysical Research: Oceans. 2010 Jan 1;115(5).
Ayers, J. M., and M. S. Lozier. “Physical controls on the seasonal migration of the North Pacific transition zone chlorophyll front.” Journal of Geophysical Research: Oceans, vol. 115, no. 5, Jan. 2010. Scopus, doi:10.1029/2009JC005596.
Ayers JM, Lozier MS. Physical controls on the seasonal migration of the North Pacific transition zone chlorophyll front. Journal of Geophysical Research: Oceans. 2010 Jan 1;115(5).

Published In

Journal of Geophysical Research: Oceans

DOI

EISSN

2169-9291

Publication Date

January 1, 2010

Volume

115

Issue

5

Related Subject Headings

  • 3709 Physical geography and environmental geoscience
  • 3708 Oceanography
  • 3706 Geophysics
  • 0406 Physical Geography and Environmental Geoscience
  • 0405 Oceanography
  • 0404 Geophysics