Seafloor Habitat Mapping on the Oregon Continental Margin: A Spatially Nested GIS Approach to Mapping Scale, Mapping Methods, and Accuracy Quantification |
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Authors: | Andrew Lanier Chris Romsos Chris Goldfinger |
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Institution: |
a Oregon State University, College of Oceanic and Atmospheric Sciences, Corvallis, Oregon, USA |
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Abstract: | We implement a geographic information system (GIS) to map surficial geologic habitats (SGH) with varying scales at Nehalem Bank, Oregon, USA. Geologic interpretation was first used to produce a regional-scale SGH map of mega habitats. Local-scale algorithmic classification techniques were then implemented where data density and richness permitted the mapping of meso (10 m-1 km) macro scale (1-10 m) habitat features. We use a ranked-(data) density approach to assess the distribution and quality of input data for the regional SGH map. We then apply a virtual reference dataset and error matrix technique to assess the thematic accuracy of local-scale maps. |
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Keywords: | mapping scale seafloor geologic habitat interpretation classification GIS remote sensing accuracy assessment |
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