Identification_Information: Citation: Citation_Information: Originator: Guy R. Cochrane Publication_Date: 2005 Title: Coverage nanphab -- Habitat polygons for North Anacapa Passage Edition: (Volume II, Version 1.0, 2005) Geospatial_Data_Presentation_Form: map Online_Linkage: http://pubs.usgs.gov/of/2005/1170/catalog.html Online_Linkage: http://pubs.usgs.gov/of/2005/1170/basemaps/nanphab.tgz Larger_Work_Citation: Citation_Information: Originator: Guy R. Cochrane Originator: James E. Conrad Originator: Jane A. Reid Originator: Sarah Fangman Originator: Nadine Golden Publication_Date: 2005 Title: Nearshore Benthic Habitat GIS for the Channel Islands National Marine Sanctuary and Southern California State Fisheries Reserves, Volume II Edition: 1.0 Series_Information: Series_Name: Open-File Report Issue_Identification: USGS OFR 2005-1170 Publication_Information: Publication_Place: Western Coastal and Marine Geology, Santa Cruz, CA Publisher: U.S. Geological Survey, Coastal and Marine Geology Program Online_Linkage: http://pubs.usgs.gov/of/2005/1170/index.html Description: Abstract: Benthic habitat polygon coverages have been created for marine reserve locations surrounding the Santa Barbara Basin. Diver, ROV and submersible video transects, bathymetry data, sedimentary samples, and sonar mapping, have been integrated to describe the geological, biological, and oceanographic aspects of habitat. Anacapa Reserve, is part of the Marine Ecological Reserves Research Program (MERRP). The U.S. Geological Survey (USGS), in a cooperative project with Sea Grant-MERRP and investigators at National Marine Fisheries Service (NMFS), the Channel Islands National Marine Sanctuary (CINMS), and National Park Service (NPS) has collected sidescan sonar and video data to produce a polygon coverage. The habitat polygons have attributes for megahabitat, bottom induration, macrohabitat (where macrohabitat observations are available), polygon area, polygon perimeter, and water depth. The habitat GIS shows rocky habitat suitable for rockfish (Sebastes sp.), abalone (Haliotis sp.), and other threatened benthic species from the shoreline out to the 100-m depth limit of the survey. Purpose: These data are intended for science researchers, students, policy makers, and the general public. The data can be used with geographic information systems (GIS) software to display geologic and oceanographic information. Supplemental_Information: Additional information about the field activities from which this data set was derived are available online at http://walrus.wr.usgs.gov/nearshorehab/ Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government. Although this Federal Geographic Data Committee-compliant metadata file is intended to document the data set in nonproprietary form, as well as in ArcInfo format, this metadata file may include some ArcInfo-specific terminology. Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 20000612 Ending_Date: 20000718 Currentness_Reference: Ground Condition Status: Progress: Complete Maintenance_and_Update_Frequency: As Needed Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -119.528215 East_Bounding_Coordinate: -119.447256 North_Bounding_Coordinate: 34.081139 South_Bounding_Coordinate: 34.019136 Keywords: Theme: Theme_Keyword_Thesaurus: None Theme_Keyword: habitat Theme_Keyword: fisheries Theme_Keyword: seafloor Theme_Keyword: geology Theme: Theme_Keyword_Thesaurus: ISO 19115 Topic Category Theme_Keyword: biota Theme_Keyword: geoscientificinformation Theme_Keyword: imagereyBaseMapsEarthCover Theme_Keyword: oceans Place: Place_Keyword_Thesaurus: None Place_Keyword: California Place_Keyword: Santa Barbara Place_Keyword: Channel Islands Access_Constraints: None Use_Constraints: Not suitable for navigation Point_of_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Guy R. Cochrane Contact_Organization: United States Geological Survey (USGS) Coastal and Marine Geology Program (CMGP) Contact_Position: Geophysicist Contact_Address: Address_Type: mailing and physical address Address: USGS, 400 Natural Bridges Drive City: Santa Cruz State_or_Province: CA Postal_Code: 95060-5792 Country: USA Contact_Voice_Telephone: (831) 427-4754 Contact_Facsimile_Telephone: (831) 427-4748 Contact_Electronic_Mail_Address: gcochrane@usgs.gov Data_Set_Credit: Thanks to the Staff of the Channel Islands National Marine Sanctuary, the crew of the NOAA R/V Ballena, the crew of the NOAA R/V MacArthur, and the crew of the UCSD R/V Sproul. Native_Data_Set_Environment: SunOS, 5.8, sun4u UNIX ArcInfo version 8.0.2 Cross_Reference: Citation_Information: Originator: United States Geological Survey (USGS), Coastal and Marine Geology (CMG) Publication_Date: 2005 Title: USGS CMG North Anacapa Passage Habitat Metadata Online_Linkage: http://pubs.usgs.gov/of/2005/1170/ Larger_Work_Citation: Citation_Information: Originator: United States Geological Survey (USGS), Coastal and Marine Geology (CMG) Publication_Date: 2005 Title: USGS CMG InfoBank Online_Linkage: http://walrus.wr.usgs.gov/infobank Browse_Graphic: Browse_Graphic_File_Name: http://pubs.usgs.gov/of/2005/1170/images/nanphab.html Browse_Graphic_File_Description: JPEG image of habitat polygons Browse_Graphic_File_Type: JPEG Data_Quality_Information: Attribute_Accuracy: Attribute_Accuracy_Report: Habitat polygons dervived in ArcGIS 9.0 from a georefereced sidescan sonar mosaic tiff. Habitat attribute types are from Greene, G.H., Yoklavich, M.M., Starr, R.M., O'Connell, V.M., Wakefield, W.W., Sullivan, D.E., McRea, J.E., and Cailliet, G.M., 1999. A classification scheme for deep seafloor habitats. Oceanologica Acta, 22, 663-678. Macrohabitat attributes assignments are limited to areas where bottom video has been collected. Logical_Consistency_Report: Polygon topology present. Every polygon has a label and are all polygons closed Completeness_Report: Macrohabitat classification is missing where video information is lacking Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: Accuracy of the horizontal coordinates is on the order of 10 m based on uncertainty in position of sidescansonar fish relative to ships gps position. Lineage: Process_Step: Process_Description: Cochrane, G.R., and K. D. Lafferty, 2002, Use of acoustic classification of sidescan sonar data for mapping benthic habitat in the Northern Channel Islands, California. Continental Shelf Research, 22:683-690. Process_Date: 2004 Process_Step: Process_Description: Nadine Golden started here. //Created grids and polygons from original image files. 1. Converted images to grids in ArcInfo: Note: divided hard layer into 2 layers: -first layer includes of all rock data -second rock layer included only the bright homogeneous areas. -merged these 2 layers for final hard grid nanp1hrd4g. 2. Converted grids to polygons for editing using ArcGIS Spatial Analysis Extension's Reclassify option. 3. Edited, cleaned, polygons -cleaned up all layers: wiped out the nadir and noise areas classified as hard, mixed or soft bottom. 4. Converted polygons back to grids using ArcGIS Spatial Analysis Extension option: Feature to Rasture. //Merged final grids to make one grid of all layers 1. Created a fourth grid of all data area and assigned gridcode to 128--half way between soft and mixed. 2. Merged all grids in Spatial Analyst tool Raster Calculator -set option to Extent-->union of inputs. -used the merge command in raster calculator dialogue box: nanp1mhab1g = merge([nanp1mhrd4g - nanp1mhrd4g],[nanp1mix9g - nanp1mix9g],[nanpsand2g - nanpsand2g],[nanapalldata2 - nanapalldata2]) //Filtered grid to decrease polygon total steps: 1. filtered original grid using the "low" filter default (two passes were required to create a grid that resolved to under 100,000 polygons): filter nanp1mhab13g nanp1mhab14g filter nanp1mhab14g nanp1mhab15g 2. reclassified new grid using spatial anlysis reclassification option and the following remap categories: 1-128 : 85 129-189 : 170. 190-255 : 255 3. converted new floating point grid to an integer grid. secru1mhab8g = int(secru1mhab7g). 4. Using ArcGIS, ArcToolbox Raster to Features, converted new floating integer grid to polygon shapefile new polygon shapefile: 85,257 polygons (note: original polygon shapefile: 171,781 polygons) Process_Date: 20050114 Spatial_Data_Organization_Information: Direct_Spatial_Reference_Method: Vector Point_and_Vector_Object_Information: SDTS_Terms_Description: SDTS_Point_and_Vector_Object_Type: G-polygon Point_and_Vector_Object_Count: 71652 Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Planar: Map_Projection: Map_Projection_Name: NAD_1983_UTM_Zone_10N Polar_Stereographic: Straight-Vertical_Longitude_From_Pole: -123 Standard_Parallel: 0.999600 False_Easting: 500000.000 False_Northing: 0.000 Planar_Coordinate_Information: Planar_Coordinate_Encoding_Method: coordinate pair Coordinate_Representation: Abscissa_Resolution: .000016 Ordinate_Resolution: .000016 Planar_Distance_Units: meters Geodetic_Model: Horizontal_Datum_Name: North American Datum of 1983 Ellipsoid_Name: Geodetic ReferenceSystem 80 Semi-major_Axis: 6378137 Denominator_of_Flattening_Ratio: 298.2572222 Entity_and_Attribute_Information: Overview_Description: Entity_and_Attribute_Overview: > >nanphab Fields: > >NAME ALIAS TYPE LENGTH PRECISION SCALE NUMBER_FORMAT >ID ID Double 10 10 0 Numeric >GRIDCODE GRIDCODE Double 10 10 0 Numeric >CODE CODE String 10 10 0 - >MEGA_ID MEGA_ID String 5 0 0 - >MSO_MRC_ID MSO_MRC_ID String 5 0 0 - >MDFR_ID MDFR_ID String 5 0 0 - >BOTTOM_ID BOTTOM_ID String 5 0 0 - >GEO_UNIT GEO_UNIT String 50 0 0 - >Area Area Double 19 18 11 Numeric Benthic habitat classification attributes: megahabitat, bottom induration, meso-macrohabitat, and modifiers from Green and others, 1999. CODE is a combination of the habitat attributes. MEGA_ID is usually S for Shelf, but may be F for basin or canyon flank. BOTTOM_ID is h for hard bottom, m for mixed hard and soft bottom, or s for soft sediment bottom MSO_MRC_ID are visual observations when sand waves (w) were observed. These macrohabitats described in Greene and others 1999. MDFR_ID are modifiers to describe the texture or lithology of the seafloor and appear in the code preceded by an underscore (_). Including; fractured (_f), differently eroded (_d), kelp (_k), and limestone (_l) Entity_and_Attribute_Detail_Citation: Habitat attribute types are Modified after Greene, G.H., Yoklavich, M.M., Starr, R.M., O'Connell, V.M., Wakefield, W.W., Sullivan, D.E., McRea, J.E., and Cailliet, G.M., 1999. A classification scheme for deep seafloor habitats. Oceanologica Acta, 22, 663-678. Distribution_Information: Distributor: Contact_Information: Contact_Organization_Primary: Contact_Organization: United States Geological Survey (USGS) Coastal and Marine Geology Program (CMGP) Contact_Person: Guy R. Cochrane Contact_Position: Geophysicist Contact_Address: Address_Type: mailing and physical address Address: USGS, 400 Natural Bridges Drive City: Santa Cruz State_or_Province: CA Postal_Code: 95060-5792 Country: USA Contact_Voice_Telephone: (831) 427-4754 Contact_Facsimile_Telephone: (831) 427-4748 Contact_Electronic_Mail_Address: gcochrane@usgs.go Distribution_Liability: Please recognize the U.S. Geological Survey (USGS) as the source of this information. Although these data have been used by the U.S. Geological Survey, U.S. Department of the Interior, no warranty expressed or implied is made by the U.S. Geological Survey as to the accuracy of the data. The act of distribution shall not constitute any such warranty, and no responsibility is assumed by the U.S. Geological Survey in the use of this data, software, or related materials. Metadata_Reference_Information: Metadata_Date: 2005 Metadata_Review_Date: 2005 Metadata_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: United States Geological Survey (USGS) Coastal and Marine Geology Program (CMGP) Contact_Person: Guy R. Cochrane Contact_Position: Geophysicist Contact_Address: Address_Type: mailing and physical address Address: USGS, 400 Natural Bridges Drive City: Santa Cruz State_or_Province: CA Postal_Code: 95060-5792 Country: USA Contact_Voice_Telephone: (831) 427-4754 Contact_Facsimile_Telephone: (831) 427-4748 Contact_Electronic_Mail_Address: gcochrane@usgs.gov Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata ("CSDGM version 2") Metadata_Standard_Version: FGDC-STD-001-1998 Metadata_Access_Constraints: none