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Mapping surficial geologic habitats of the Oregon continental margin using integrated interpretive GIS techniques

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dc.contributor.advisor Goldfinger, Chris
dc.creator Romsos, Christopher G.
dc.date.accessioned 2012-09-06T21:00:52Z
dc.date.available 2012-09-06T21:00:52Z
dc.date.copyright 2004-01-29
dc.date.issued 2004-01-29
dc.identifier.uri http://hdl.handle.net/1957/33297
dc.description Graduation date: 2004 en_US
dc.description.abstract We map the regional physiography and surficial lithology (Surficial Geologic Habitat or SGH) over the continental margin of Oregon. This thesis develops, describes, and implements an iterative interpretive method to map seafloor habitat types from disparate geological and geophysical datasets including: bathymetric images, sidescan sonar images, seismic reflection profiles, sediment samples, geologic maps of structure, and observations from submersibles. An indirect technique for the assessment of map accuracy or habitat type misidentification error is also explored and used to derive supplemental maps of varying interpretative confidence, or "quality". The geological and geophysical datasets used to produce the SGH maps of the Oregon margin are by their nature patchy, and form an irregular mosaic of variable data density and quality. Uniform sampling of continental margins does not yet exist, thus these maps are an attempt to glean as much information as possible from the framework of existing data. In any given area the quantity and quality of data available varied considerably, and required a flexible method of interpretation based on this availability. The integrated interpretative GIS techniques are developed to facilitate mapping geologic habitat types over this region of discontinuous and patchy seafloor data. The SGH map and thematic map accuracy assessment support improved habitat-based inventory and assessment methods. They also serve as habitat reference materials for marine resources management and planning activities at local to national scales. SGH and data quality maps are incorporated as thematic layers within a broader habitat geodatabase for west coast groundfish and are directly applied for modeling Essential Fish Habitat (EFH) for these species. en_US
dc.language.iso en_US en_US
dc.subject.lcsh Continental margins -- Oregon -- Remote-sensing maps en_US
dc.subject.lcsh Environmental mapping -- Oregon -- Remote sensing en_US
dc.title Mapping surficial geologic habitats of the Oregon continental margin using integrated interpretive GIS techniques en_US
dc.type Thesis/Dissertation en_US
dc.degree.name Master of Science (M.S.) in Marine Resource Management en_US
dc.degree.level Master's en_US
dc.degree.discipline Earth, Oceanic and Atmospheric Sciences en_US
dc.degree.grantor Oregon State University en_US
dc.contributor.committeemember Wakefield, Waldo
dc.contributor.committeemember Heppell, Scott
dc.description.digitization File scanned at 300 ppi (Monochrome, 24-bit Color) using ScandAll PRO 1.8.1 on a Fi-6770A in PDF format. CVista PdfCompressor 4.0 was used for pdf compression and textual OCR. Plates: Master file scanned at 600 dpi, 24-bit color on a Paradigm ImagePRO GxT 42 HD (OEM version of ColortracSmartLF Bx 42). Image manipulated by SmartLF1.3.05. en_US
dc.description.peerreview no en_us
dc.description.other For master (tiff) digital images of maps contained in this document contact scholarsarchive@oregonstate.edu en_US


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