Article

 

Seasonal renewal of the California Current: The spring transition off California Public Deposited

Downloadable Content

Download PDF
https://ir.library.oregonstate.edu/concern/articles/vx021k914

Descriptions

Attribute NameValues
Creator
Abstract
  • A pair of high-resolution oceanographic surveys in March and April 1995 revealed a large and rapid transition from late winter to spring conditions in the coastal zone off central and southern California. These data are unique in capturing the detailed three-dimensional physical structure of and biological response to the spring transition in the southern California Current System (CCS). Changes associated with the transition included a strong tilting of isopycnals, which lifted by up to 60 m near the coast and dropped 20–40 m offshore, a subsequent increase in cross-shore density gradients, the development of a strong nearshore equatorward jet, and an increase in net equatorward transport from the shelf break out to 300 km offshore. The most dramatic physical changes were confined to the shoreward 150 km and extended at least to the depth of the core of the California Undercurrent (300 m). In response to these physical changes, there was an apparent strong increase in primary productivity, as indicated by changes in nearshore vertically integrated fluorescence and beam attenuation coefficient. Atmospheric and oceanic conditions in the CCS were near seasonal norms in the winter and spring of 1995, implying that a transition of the magnitude and rapidity observed here may be an annual event. Furthermore, the development of the coastal upwelling jet was independent of the winter manifestation of the main core of the California Current, which was maintained well off shore. This suggests that the California Current is regenerated seasonally through the development and offshore evolution of the coastal upwelling jet. It is not known whether the new jet joins and strengthens or replaces the offshore core of the previous winter.
Resource Type
DOI
Date Available
Date Issued
Citation
  • Lynn, R. J., S. J. Bograd, T. K. Chereskin, and A. Huyer, Seasonal renewal of the California Current: The spring transition off California, J. Geophys. Res., 108(C8), 3279, doi:10.1029/2003JC001787, 2003.
Journal Title
Journal Volume
  • 108
Journal Issue/Number
  • C8
Academic Affiliation
Rights Statement
Funding Statement (additional comments about funding)
  • Huyer was supported by NSF grant OCE-0000733; Chereskin was supported by NASA grant NAG5-6497. Upwelling index data were obtained from the Pacific Fisheries Environmental Laboratory; sea level data were obtained from the University of Hawaii Sea Level Center.
Publisher
Language
Replaces
Additional Information
  • description.provenance : Submitted by Linda Lamb (llamb@coas.oregonstate.edu) on 2010-03-30T18:18:10Z No. of bitstreams: 1 Lynn et al JGR 2003.pdf: 2368713 bytes, checksum: b76980c4599658ddaade02c7985012b5 (MD5)
  • description.provenance : Approved for entry into archive by Linda Kathman(linda.kathman@oregonstate.edu) on 2010-03-30T21:29:57Z (GMT) No. of bitstreams: 1 Lynn et al JGR 2003.pdf: 2368713 bytes, checksum: b76980c4599658ddaade02c7985012b5 (MD5)
  • description.provenance : Made available in DSpace on 2010-03-30T21:29:57Z (GMT). No. of bitstreams: 1 Lynn et al JGR 2003.pdf: 2368713 bytes, checksum: b76980c4599658ddaade02c7985012b5 (MD5) Previous issue date: 2003-08-26
ISSN
  • 0148-0227

Relationships

Parents:

This work has no parents.

Items