The relationship between snow crystal types and the prevailing atmospheric conditions associated with the passage of Pacific storms observed at Santiam Pass in the Oregon Cascades Public Deposited

http://ir.library.oregonstate.edu/concern/graduate_thesis_or_dissertations/w37639621

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  • Detailed analyses of snow crystal sequence and atmospheric conditions were accomplished utilizing macrophotographic techniques for obtaining the snow crystal record at Santiam Pass in the Oregon Cascades on 19-20 January, 14-15 February, and 9-10 March, 1967. The photographic equipment consisted of a 35 millimeter single lens reflex camera, bellows, and extension tubes which facilitated macro-photography. To conduct crystal studies, problems inherent with crystal photography required solutions. The synoptic data for this study were extracted from teletype reports, facsimile charts, radio-sonde soundings, and surface observations from U. S. Weather Bureau and Federal Aviation Administration weather stations. The several storms analyzed indicated a crystal sequence commencing with high altitude crystal types progressing to low altitude crystal types with the passage of a warm front occlusion, and a sequence of low altitude crystal types changing to a wide, intermittent crystal type spectra representative of convective and orographic activity following the passage of a cold front occlusion. A relationship between ceiling heights and crystal types was noted in two synoptic situations involving frontal passages. Low ceilings over the valley stations were associated with crystal types from high altitudes and high ceilings were associated with crystals from low altitudes which exhibited riming.
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  • File scanned at 300 ppi using Capture Perfect 3.0 on a Canon DR-9050C in PDF format. CVista PdfCompressor 5.0 was used for pdf compression and textual OCR.
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  • description.provenance : Rejected by Katy Davis(kdscannerosu@gmail.com), reason: Replace on 2014-04-03T18:37:14Z (GMT)
  • description.provenance : Approved for entry into archive by Patricia Black(patricia.black@oregonstate.edu) on 2014-04-01T13:55:42Z (GMT) No. of bitstreams: 1 BowerCarlAJr1968.pdf: 46251701 bytes, checksum: 8b5ce93111a54882d852b9dfd95f7b0d (MD5)
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  • description.provenance : Approved for entry into archive by Katy Davis(kdscannerosu@gmail.com) on 2014-04-07T17:07:42Z (GMT) No. of bitstreams: 1 BowerCarlAJr1968.pdf: 46441063 bytes, checksum: 7e80ab4b908a0608004254c9bda701c8 (MD5)

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