Seasonal and interannual variation in the extent of hypoxia in the northern California Current from 1998–2012 Public Deposited

http://ir.library.oregonstate.edu/concern/articles/s7526f13v

To the best of our knowledge, one or more authors of this paper were federal employees when contributing to this work. This is the publisher’s final pdf. The published article is copyrighted by the Association for the Sciences of Limnology and Oceanography, Inc. and can be found at:  http://www.aslo.org/lo/.

Descriptions

Attribute NameValues
Creator
Abstract or Summary
  • This study addresses the occurrence, severity, and extent of hypoxia over the continental shelf of the northern California Current (40–48.5°N latitude) from 1998 to 2012. Clear seasonal trends exist in the timing and duration of hypoxia. The highest bottom-water dissolved oxygen concentrations occurred from November to March, and levels below the 1.4 mL L⁻¹ hypoxia threshold were detected during the upwelling season (May through October). Regions of hypoxia tended to occur north of 42°N latitude and were most severe over the widest areas of the continental shelf. Hypoxic waters covered up to 62% (15,600 km²) of the continental shelf during some years (2002, 2007, 2008), and, 10% in others (2003, 2010–2011). There are seasonal and interannual shifts in both the depth and oxygen content of upwelled waters. Years with the greatest extent and severity of hypoxia had the lowest concentration of dissolved oxygen in upwelling source waters. The dissolved oxygen concentration of source waters showed a gradual decline from 1998 through 2007, with a subsequent increase from 2008–2010 before leveling off in 2011 and 2012. The variability in oxygen content of source waters correlates well with the North Pacific Gyre Oscillation and may indicate the importance of large-scale climate dynamics in determining the extent and severity of hypoxia in the northern California Current.
Resource Type
DOI
Date Available
Date Issued
Citation
  • Peterson, J. O., Morgan, C. A., Peterson, W. T., & Di Lorenzo, E. (2013). Seasonal and interannual variation in the extent of hypoxia in the northern California Current from 1998–2012. Limnology and Oceanography, 58(6), 2279-2292. doi:10.4319/lo.2013.58.6.2279
Series
Rights Statement
Funding Statement (additional comments about funding)
Publisher
Peer Reviewed
Language
Replaces
Additional Information
  • description.provenance : Approved for entry into archive by Erin Clark(erin.clark@oregonstate.edu) on 2014-05-28T17:33:43Z (GMT) No. of bitstreams: 1 PetersonJayHMSCSeasonalInterannualVariation.pdf: 3440958 bytes, checksum: 8dacbb49722b2274d31bb1215885f6a1 (MD5)
  • description.provenance : Made available in DSpace on 2014-05-28T17:33:43Z (GMT). No. of bitstreams: 1 PetersonJayHMSCSeasonalInterannualVariation.pdf: 3440958 bytes, checksum: 8dacbb49722b2274d31bb1215885f6a1 (MD5) Previous issue date: 2013-11
  • description.provenance : Submitted by Erin Clark (erin.clark@oregonstate.edu) on 2014-05-28T17:33:19Z No. of bitstreams: 1 PetersonJayHMSCSeasonalInterannualVariation.pdf: 3440958 bytes, checksum: 8dacbb49722b2274d31bb1215885f6a1 (MD5)

Relationships

Parents:

This work has no parents.

Last modified

Downloadable Content

Download PDF

Items