The thermal characteristics of hydrologically intact Type C and E streams in eastern Oregon Public Deposited

http://ir.library.oregonstate.edu/concern/graduate_thesis_or_dissertations/7s75dg26b

Descriptions

Attribute NameValues
Creator
Abstract or Summary
  • Many streams in eastern Oregon are listed as water quality impaired on the basis of water temperature. However, it is often difficult to predict water temperature for these streams even if there are no anthropogenic impacts. We measured air and water temperature and stream characteristics on three Type C and E channel streams to determine if stream type can help predict stream thermal characteristics. All six streams were hydrologically intact, assessed as Proper Functioning Condition (PFC), and were located in eastern and south central Oregon. Water and air temperatures and stream geomorphic data were taken during the summer months of 1998 and 1999. Average daily maximum and minimum water temperature and average daily maximum and minimum rates of change in water temperature following normalization of data with estimated water residence time were analyzed. There was more variation within stream type than across groups, which precluded separation of stream types based on thermal characteristics. Most streams regardless of type and year exhibited similar daily mean nighttime recoveries of approximately 0.53°C/hour cooling in the downstream direction following normalization by water residence time. All of the streams heated at least 1.0°C/hour during the day with some streams gaining 2.25°C/hour in the downstream direction following normalization by water residence time. Thermal variation among the streams was likely a result of the daily initial water temperature, the gradient between stream and thermal environment, and the varied physical character of each stream within type. Atmospheric temperature is probably the single most critical factor for characterizing stream temperature behavior during the periods of heating and cooling.
Resource Type
Date Available
Date Copyright
Date Issued
Degree Level
Degree Name
Degree Field
Degree Grantor
Commencement Year
Advisor
Committee Member
Academic Affiliation
Non-Academic Affiliation
Subject
Rights Statement
Language
Digitization Specifications
  • File scanned at 300 ppi (Monochrome, 256 Grayscale, 24-bit Color) using Capture Perfect 3.0.82 on a Canon DR-9080C in PDF format. CVista PdfCompressor 4.0 was used for pdf compression and textual OCR.
Replaces
Additional Information
  • description.provenance : Submitted by Erin Clark (ecscannerosu@gmail.com) on 2011-03-10T19:11:49Z No. of bitstreams: 1 HopkinsKarlT2003.pdf: 10056370 bytes, checksum: bfa317fe6b24cbe0b67db646f95387cb (MD5)
  • description.provenance : Approved for entry into archive by Patricia Black(patricia.black@oregonstate.edu) on 2011-03-11T16:48:09Z (GMT) No. of bitstreams: 1 HopkinsKarlT2003.pdf: 10056370 bytes, checksum: bfa317fe6b24cbe0b67db646f95387cb (MD5)
  • description.provenance : Approved for entry into archive by Patricia Black(patricia.black@oregonstate.edu) on 2011-03-10T20:53:44Z (GMT) No. of bitstreams: 1 HopkinsKarlT2003.pdf: 10056370 bytes, checksum: bfa317fe6b24cbe0b67db646f95387cb (MD5)
  • description.provenance : Made available in DSpace on 2011-03-11T16:48:09Z (GMT). No. of bitstreams: 1 HopkinsKarlT2003.pdf: 10056370 bytes, checksum: bfa317fe6b24cbe0b67db646f95387cb (MD5) Previous issue date: 2003-05-02

Relationships

In Administrative Set:
Last modified: 08/14/2017

Downloadable Content

Download PDF
Citations:

EndNote | Zotero | Mendeley

Items