Identification_Information: Citation: Citation_Information: Originator: Guy R. Cochrane Publication_Date: 2005 Title: Coverage sanahab -- Habitat polygons for South Anacapa 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/sanahab.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: 19990301 Ending_Date: 20000718 Currentness_Reference: Ground Condition Status: Progress: Complete Maintenance_and_Update_Frequency: As Needed Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -119.456723 East_Bounding_Coordinate: -119.331627 North_Bounding_Coordinate: 34.027738 South_Bounding_Coordinate: 33.981107 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 South Anacapa Island 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/sanahab.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: --------clip the image mosaic---------------------------- starting with 1m res mosaic sonar image sana1m.img (see proceesing history for development of mosaic) on rouse convert to sana1m.tif with export ftp to desktop imagegrid sana1m.tif sana1mg use arcedit to find xy extent of valid pixels gridclip sana1mg sana1mgc x1 y1 x2 y2 del sana1m.tif sana1m.tfw gridimage sana1mgc none sana1m.tif tiff none on rouse rm sana1m.tif sana1m.img sana1m.lbl import sana1m.tif sana1m.img ---------classification of rock areas---------------- csh rockjob1 for eastern area csh rockjob2 to classify rock in western anacapa passage area mask and mosaic together to produce sana1mrck_msk.img stretch 0;0 1;255 20;255 21;0 254;0 255;255 to produce sana1mrck4.img ftp to desktop for photoshop editing open in photoshop and duplicate layer on sana1m.raw as background photoshop painting out noise with black ----------classification of mixed areas------------- on rouse: csh mixedjob sana1mmix.img rename sana1mmix.raw ftp to desktop open in photoshop and duplicate layer on sana1m.raw as background, then save as sana1mmix1.psd photoshop painting out noise with black save as sana1mmix1.raw ftp to rouse convert to tiff sana1mmix1.tif with export ftp to desktop imagegrid sana1mmix1g gridpoly sana1mmix1p arcedit sana1mmix1p sel area < 10 and grid-code = 0 calc grid-code = 255 polygrid sana1mmix1p sana1mmix2g grid-code gridpoly sana1mmix2g sana1mmix2p ------------------------------------ Nadine Golden starts editing the data at this point arcedit to remove zero polygons that are shadow save sana1mmix3p polygrid sana1mmix3p sana1mmix4g gridpoly sana1mmix4g sana1mmix4p arcedit to remove 0 gridcode polygons in mixed areas at east and west edge of the mosaic save sana1mmix4p polygrid sana1mmix4p sana1mmix5g ae sel grid-code = 255 calc grid-code = 170 polygrid sana1mmix3p sana1mmix4 grid-code ------------------------------------ for soft bottom stretch sana1m sana1mmud 0;0 1;85 255;85 export sana1mmud.tif imagegrid sana1mmud.tif sana1mmud --------------------------------------------------- //converted tiff to grid in arcinfo using imagegrid command imagegrid sana1mmud sana1mmud1g imagegrid sana1mrck12 sana1mrck12g //cleaned out Photoshop values by converting grid to polygon and edited polygon in arcinfo. gridpoly sana1mrck12g sana1mrck12p ae ec sana1mrck12p sel grid-code = 255 or grid-code = o nselect calc grid-code = 0 polygrid sana1mrck12p sana1mrck13g grid-code //merged grids in arcinfo copy sana1mmud1g sana1hab1g grid gridedit edit sana1hab1g gridedit gridmerge zero sana1mmix5g sana1mrck13g //Steps for creating anacapa island grid 1. created polygon feature class of anacapa island in ArcMap by tracing the island off the coast shape file using the edit mode trace tool. anacapa_island.shp 2. Converted polygon feature class to polygon coverage using ArcMap Spatial Analyst-->convert polygon feature to polygon coverage. anacapa_island.shp-->anacapap1 3. cleaned coverage using ArcInfo build anacapaP1 clean anacapaP1 4. converted polygon coverage to grid using ArcInfo poly grid anacapap1 anacapag1 grid-code //Steps to creating near shore rock grid (using ArcMap and ArcTool Box) 1. created polygon feature class of rock in ArcMap by loosely tracing the outer (closest to land) rock area and closing the polygon with a line. rock.shp 2. created grid using arctoolbox feature class to grid toolrock.shp rockg1 3. using spatial analyst tool reclassify, converted values of rockg1 from 0 to 255 and named new file: rock2g //Calculate final grid with cleaned near shore data (from mud to rock) and no data where there is land 1. Set up ArcMap project with all grids: sana1mhab2g, anacapag1, rock2g 2. Spatial Analyst tool -set option to Extent-->union of inputs. -in raster calculator dialogue box merge grids of rck and hab: sana1mhab3g = merge([rock2g],[san1mhab2g]) //Calculate no data where there is land 1. Create 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 (around sana1mhab3g) -in arctoolbox-->analysis tool-->-->erase erase anacapa 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. Recalculate sana1hab3g with new mask poly by using the spatial analyst's raster calculator [sana1mhab4g] = [sana1mhab3g] --> select evaluate resulting grid has a hole (no data) where land was //set all 0 data to no data 1. in spatial analyst raster calculator divide grid by itself sana1mhab4g]/[sana1mhab4g] 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. in spatial analyst raster calculator multiply new calculation by original grid: sana1mhab5g = [sana1mhab4g] * [Calculation] so all values * 1 gives you original data //Breakup large mud polygon 1. Used Raster Cleanup tool to paint breaklines in polygon 2. converted to polygione shapefile. Note: this step took several attempts in order to maintain integrity of data and the final shapefile in this step was sana1mhab21s. 3. edited polygon shapefile sana1mhab21s to asign new gridcodes to polygons in the west and north west region of data. 2. converted shapefile back to raster with Toolbox. final grid is sana1mhab21g. //Filter grid to decrease polygon total steps: 1. filtered original grid using the "low" filter default filter sana1mhab21g sana1mhab23g (note: made and error on grid sana1mhab22g so advanced one to 23g) 2. reclassified new grid using the categories you sent me in attached remap.txt file. used spatial anlysis reclassification option 3. converted new floating point grid to an integer grid. sana1mhab24g = int(sana1mhab23g) 4. Using Toolbox Raster to Features: converted new floating integer grid to polygon shapefile new polygon shapefile: 169,051 polygons original polygon shapefile: 386, 777 polygons Process_Date: 20041215 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: 67875 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: > >sanahab 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