Physical hydrography and nutrient nitrogen budget of Auke Bay, Alaska Public Deposited

http://ir.library.oregonstate.edu/concern/graduate_thesis_or_dissertations/xs55mg56k

Descriptions

Attribute NameValues
Creator
Abstract or Summary
  • Physical sources of nutrient nitrogen for the Auke Bay, Alaska estuarine ecosystem were investigated. These sources included vertical dispersion, advection, and fresh water sources. Hydrographic circulation patterns for the bay, and a nutrient budget for the surface mixed layer were developed. Measurements of temperature, salinity, currents, wind velocity, rainfall and runoff from the major streams and river influencing Auke Bay were made during the spring and summer of 1971. initial hydrographic and nutrient data (total available nitrogen and nitrate) from early spring were taken during a cruise of R/V Cayuse. Nutrient concentration of nitrate and ammonia in Auke Bay and the fresh water sources entering Auke Bay were measured on a weekly basis from July to September. Vertical mixing rates of 0.42 cubic meters per day were calculated for those times wind mixing did not occur. Mixing rates of 1.2 cubic meters/day were calculated for wind mixed conditions. Vertical dispersion through the pycnocline provided the major source of nutrients for summer phytoplankton production. Fresh water sources provided negligible amounts of nutrients. Average vertical transport of nitrate and ammonia when wind mixing did not occur were 0.5 mg-at/m²/day and 0.3 mg-at/m²/day respectively. During wind mixing, 3.0 mg-at/m²/day for nitrate and 2.0 mg-at/m²/day for ammonia were supplied to the mixed layer. Estimate productivity based on these calculations ranges from an average 100 mgC/m²/day during non wind mixed conditions to 600 mgC/m²/day during wind mixed conditions.
Resource Type
Date Available
Date Copyright
Date Issued
Degree Level
Degree Name
Degree Field
Degree Grantor
Commencement Year
Advisor
Academic Affiliation
Non-Academic Affiliation
Subject
Rights Statement
Peer Reviewed
Language
Digitization Specifications
  • File scanned at 300 ppi (Monochrome) using ScandAll PRO 1.8.1 on a Fi-6670 in PDF format. CVista PdfCompressor 4.0 was used for pdf compression and textual OCR.
Replaces
Additional Information
  • description.provenance : Approved for entry into archive by Patricia Black(patricia.black@oregonstate.edu) on 2012-03-26T18:39:30Z (GMT) No. of bitstreams: 1 KirkDeborahKathleen1973.pdf: 687545 bytes, checksum: a345a3ab1020a626602cc309db685b01 (MD5)
  • description.provenance : Submitted by Kaylee Patterson (patterka@onid.orst.edu) on 2012-03-21T21:27:39Z No. of bitstreams: 1 KirkDeborahKathleen1973.pdf: 687545 bytes, checksum: a345a3ab1020a626602cc309db685b01 (MD5)
  • description.provenance : Made available in DSpace on 2012-03-26T18:45:56Z (GMT). No. of bitstreams: 1 KirkDeborahKathleen1973.pdf: 687545 bytes, checksum: a345a3ab1020a626602cc309db685b01 (MD5) Previous issue date: 1972-06-02
  • description.provenance : Approved for entry into archive by Patricia Black(patricia.black@oregonstate.edu) on 2012-03-26T18:45:56Z (GMT) No. of bitstreams: 1 KirkDeborahKathleen1973.pdf: 687545 bytes, checksum: a345a3ab1020a626602cc309db685b01 (MD5)

Relationships

Parents:

This work has no parents.

Last modified

Downloadable Content

Download PDF

Items