Identification_Information: Citation: Citation_Information: Originator: Guy R. Cochrane Publication_Date: 2005 Title: Coverage secruchab -- Habitat polygons for Santa Cruz Island 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/secruhab.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: Single_Date/Time: Calendar_Date: 1999 Currentness_Reference: Ground Condition Status: Progress: Complete Maintenance_and_Update_Frequency: As Needed Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -119.723930 East_Bounding_Coordinate: -119.58984 North_Bounding_Coordinate: 33.991569 South_Bounding_Coordinate: 33.932464 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: 20020916 Title: USGS CMG Southeast Santa Cruz 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/secruhab.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 were hand drawn 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: //Create coast grid 1. Created polygon feature class of portion of ca coast line needed in ArcGIS by tracing the coast shape file. created: coast_poly.shp 2. Converted polygon feature class to grid using ArcMap Spatial Analyst-->convert feature to raster. created: coast_mask ---------------------------------------------------------------------------------------- //Calculated no data where there is land 1. Created shapefile mask -create new polygon feature class in ArcCatlog -add new polygon to project -using ArcMap Editor make new polygon a rectangle around all data -in arctoolbox-->analysis tool-->overlay-->erase erase coast_poly polygon from new rectangle polygon new shapefile_erase has hole of island data -in spatial analyst-->options-->set mask-->use drop down to select newerase shapefile 2. Recalculated secru1mhabg with new mask poly by using the spatial analyst's raster calculator [secru1mhab1g] = [secru1mhabg] --> select evaluate resulting grid has a hole (no data) where land was //Set all 0 data to no data 1. Spatial analyst raster calculator divide grid by itself secru1mhab1g/secru1mhab1g where 0/0 will equal no data all other data will be equal to 1 calculation leaves you with value 1 where there was data 2. Spatial analyst raster calculator multiply new calculation by original grid: secru1mhab1g * [Calculation] (note: result is Calcultion2) so all values * 1 gives you original data ------------------------------------------------------------------------------------------- //Calculated new grid with cleaned near shore data (from mud to rock) 1. created update rock grid. -used gridpaint tool to paint in additional rock near shore area in rock only grid 2. Merged new rock grid with previous all hab grid in Spatial Analyst tool Raster Calculator -set option to Extent-->union of inputs. -in raster calculator dialogue box merge grids of rck and hab: [secru1mhab4g] = merge([secru_rock3 - secru_rock3],[Calculation2 ]) 3. Cleaned up painted in data outside sonar area -Convert new grid to polygon. -Use ArcToolbox Earse tool with "cookie cutter" made from entire sonar area. ------------------------------------------------------------------------------------------- //Filtered grid to decrease polygon total steps: 1. filtered original grid using the "low" filter default filter secru1mhab5g secru1mhab6g 2. reclassified new grid using spatial anlysis reclassification option and the following remap categories: 1 128 : 85 129 189 : 170 190 225 : 255 3. converted new floating point grid to an integer grid. secru1mhab8g = int(secru1mhab7g) 4. converted new floating integer grid to polygon shapefile using Toolbox Raster to Features: new polygon shapefile: 85,257 polygons original polygon shapefile: 171,781 polygons Process_Date: 20051210 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: 85259 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: .000032 Ordinate_Resolution: .000032 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: > >secruhab 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