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Filters: Extensions: Shapefile (X) > partyWithName: PCMSC Science Data Coordinator (X) > partyWithName: Natural Hazards (X)

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This data release provides seafloor-characteristics point data across the Gulf of Alaska, as digitized directly from National Oceanic and Atmospheric Administration (NOAA) National Ocean Service (NOS) smooth sheets published from 1892 to 2001, and archived at the National Geophysics Data Center (NGDC). Geo-rectification and digitization methods were adapted from Zimmermann and Benson (2013). Each location includes information for the smooth sheet number (H#####), a unique site number location, latitude, longitude, collection date, seafloor notation, and the translation of the notation. Unique site numbers were assigned randomly to each notation on a smooth sheet, starting at “_0”. Examples of seafloor notations...
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Underwater video imagery was collected in March 2014 in the nearshore waters of Faga'alu Bay on the Island of Tutuila, American Samoa, as part of the U.S. Geological Survey Coastal and Marine Geology Program's Pacific Coral Reefs Project. Included here are 40 video files in .mpg format and an Environmental Systems Research Institute (ESRI) shapefile with location (navigation) points every two seconds.
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Estuary geomorphic units delineated at a scale of 1:1500 using a combination of (a) 03 September 2011* 0.3 meter resolution Microsoft/Digital Globe aerial imagery; and (b) elevation-colored and hillshaded digital elevation models from USGS backpack/jetski topobathy surveys (25 August 2011) for areas < MHHW and aerial lidar surveys (13-15 April 2012) for elevations > MHHW. *Image date of 3-Sep-11 corrected in metadata. During product generation the imagery date was believed to be 8-25-2011, as reported by DigitalGlobe reseller.
map background search result map search result map Underwater video footage, March 2014, Faga'alu Bay, Tutuila Island, American Samoa Geomorphic habitat units derived from 2011 aerial imagery and elevation data for the Elwha River estuary, Washington Digital seafloor character data of the Gulf of Alaska from historical National Ocean Service (NOS) smooth sheets Underwater video footage, March 2014, Faga'alu Bay, Tutuila Island, American Samoa Geomorphic habitat units derived from 2011 aerial imagery and elevation data for the Elwha River estuary, Washington Digital seafloor character data of the Gulf of Alaska from historical National Ocean Service (NOS) smooth sheets