Identification_Information: Citation: Citation_Information: Originator: Eleyne L. Phillips Originator: Peter Dartnell Originator: Florence L. Wong Publication_Date: 2012 Title: Location of mosaicked seafloor photos extracted from videotape, San Pedro shelf, southern California - VIDMOSFOOT.SHP Geospatial_Data_Presentation_Form: vector digital data Series_Information: Series_Name: U.S. Geological Survey Data Series Issue_Identification: 552 Publication_Information: Publication_Place: Menlo Park, CA Publisher: U.S. Geological Survey Online_Linkage: Larger_Work_Citation: Citation_Information: Originator: Florence L. Wong Originator: Brian D. Edwards Originator: Peter Dartnell Originator: Eleyne L. Phillips Publication_Date: 2012 Title: Seafloor Geology and Benthic Habitats of the San Pedro shelf, southern California Geospatial_Data_Presentation_Form: map Series_Information: Series_Name: U.S. Geological Survey Digital Series Issue_Identification: 552 Publication_Information: Publication_Place: Menlo Park, California Publisher: U.S. Geological Survey Online_Linkage: http://pubs.usgs.gov/ds/552/ Description: Abstract: Vidmosfoot.shp is a GIS file that shows the location of seafloor photographs extracted from videotape (collected September 2004, O-1-04-SC) and mosaicked into continuous strips. This data set is one of a collection of digital files of a geographic information system (GIS) of spatially referenced data related to the study of seafloor geology and benthic habitats of the San Pedro shelf off southern California. The San Pedro shelf study area covers approximately 400 sq km offshore of the metropolitan Los Angeles area out to a water depth of about 150 m (492 ft). The seafloor hosts a rich and varied biologic community and is subject to anthropogenic inputs from shipping traffic, sewage outfall systems, commercial fisheries, and recreational use. Between 1998 and 2004, the U.S. Geological Survey (in cooperation with Los Angeles and Orange County Sanitation Districts) mapped the seafloor with sonar technologies, collected video and still photography, and collected sediment samples to develop a characterization of this shelf area. 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/infobank/o/o104sc/html/o-1-04-sc.meta.html 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: 2004 Currentness_Reference: ground condition Status: Progress: Complete Maintenance_and_Update_Frequency: None planned. Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -118.338133 East_Bounding_Coordinate: -117.949982 North_Bounding_Coordinate: 33.715607 South_Bounding_Coordinate: 33.562234 Keywords: Theme: Theme_Keyword_Thesaurus: None Theme_Keyword: benthic habitat Theme_Keyword: coastal shelf Theme_Keyword: coastal geology Theme_Keyword: seafloor geology Theme_Keyword: seafloor character Theme_Keyword: seafloor habitat Theme_Keyword: sediment grain size Theme: Theme_Keyword_Thesaurus: ISO 19115 Topic Category Theme_Keyword: environment Theme_Keyword: geoscientificInformation Theme_Keyword: oceans Place: Place_Keyword_Thesaurus: Geographic Names Information System Place_Keyword: San Pedro, California Place_Keyword: San Pedro Bay, California Place_Keyword: Long Beach, California Place_Keyword: Los Angeles, California Place_Keyword: Los Angeles Harbor, California Place_Keyword: Long Beach Middle Harbor, California Place_Keyword: Seal Beach, California Place_Keyword: California Place_Keyword: USA Place: Place_Keyword_Thesaurus: GEOnet Names Server Place_Keyword: north Pacific Ocean Place: Place_Keyword_Thesaurus: none Place_Keyword: San Pedro shelf, southern California Access_Constraints: None Use_Constraints: None Point_of_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Person: Florence L. Wong Contact_Address: Address_Type: mailing address Address: 345 Middlefield Road Mail Stop 999 City: Menlo Park State_or_Province: CA Postal_Code: 94025 Country: USA Contact_Voice_Telephone: 650-329-5327 Contact_Electronic_Mail_Address: fwong@usgs.gov Native_Data_Set_Environment: Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 3; ESRI ArcCatalog 9.3.1.3500 Cross_Reference: Citation_Information: Originator: Robert L. Folk Publication_Date: 1980 Title: Petrology of Sedimentary Rocks Edition: 1980 Geospatial_Data_Presentation_Form: document Publication_Information: Publication_Place: Austin TX Publisher: Hemphill Publishing Co. Data_Quality_Information: Logical_Consistency_Report: Point features present. Completeness_Report: Complete. Lineage: Process_Step: Process_Description: In October 2004, 365 line-kilometers of seafloor video and over 13,000 photographs were collected over the entire San Pedro Shelf. A 2 m by 1 m camera sled was towed about 2 m off bottom at a speed of about 2 knots. The sled consisted of one forward-looking video camera and one vertical video camera, each with paired lasers for estimating scale, one 6-megapixel camera, and flood lights. Both videos were streamed to the ship in real time for observation on TV monitors and recorded on MiniDV tapes. Navigational information including GMT (Greenwich Mean Time) and geographic coordinates were superimposed on the video and recorded onto the second channel of the MiniDV tapes. Video segments were captured from the MiniDV tapes using Adobe Premiere software and saved in AVI video format. Geographic coordinates of prominent features on the sea floor were recorded usually and the beginning and end of the video segment. Using a suite of programs developed by Dr. Yuri Rzhanov, University of New Hampshire (UNH), Center for Coastal and Ocean Mapping through a cooperative USGS - UNH agreement, the video frames were sub-sampled every 2 to 15 frames depending on the camera sled speed over the sea floor. The video frame was cropped depending on lighting and super-imposed text. Frame-to-frame offset measures were calculated using pattern recognition. Finally, each frame was stitched to the previous frame using the offset values that resulting in a bitmap (BMP) image. The BMP image was converted to a TIFF image and geo-referenced using standard GIS techniques with the recorded geographic coordinates. The shapefile vidmosfoot.shp consists of the outlines of the mosaicked images. Process_Date: 2007 Spatial_Data_Organization_Information: Direct_Spatial_Reference_Method: Vector Point_and_Vector_Object_Information: SDTS_Terms_Description: SDTS_Point_and_Vector_Object_Type: Entity point Point_and_Vector_Object_Count: 183 Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Planar: Grid_Coordinate_System: Grid_Coordinate_System_Name: Universal Transverse Mercator Universal_Transverse_Mercator: UTM_Zone_Number: 11 Transverse_Mercator: Scale_Factor_at_Central_Meridian: 0.999600 Longitude_of_Central_Meridian: -117.000000 Latitude_of_Projection_Origin: 0.000000 False_Easting: 500000.000000 False_Northing: 0.000000 Planar_Coordinate_Information: Planar_Coordinate_Encoding_Method: coordinate pair Coordinate_Representation: Abscissa_Resolution: 0.00001 Ordinate_Resolution: 0.00001 Planar_Distance_Units: meters Geodetic_Model: Horizontal_Datum_Name: D_WGS_1984 Ellipsoid_Name: WGS_1984 Semi-major_Axis: 6378137.000000 Denominator_of_Flattening_Ratio: 298.257224 Entity_and_Attribute_Information: Detailed_Description: Entity_Type: Entity_Type_Label: vidmosfoot Entity_Type_Definition: outline of mosaicked seafloor images Entity_Type_Definition_Source: this study Attribute: Attribute_Label: FID Attribute_Definition: Internal feature number. Attribute_Definition_Source: ESRI Attribute_Domain_Values: Unrepresentable_Domain: Sequential unique whole numbers that are automatically generated. Attribute: Attribute_Label: Shape Attribute_Definition: Feature geometry. Attribute_Definition_Source: ESRI Attribute_Domain_Values: Unrepresentable_Domain: Coordinates defining the features. Attribute: Attribute_Label: AREA Attribute_Definition: area of region polygon Attribute_Definition_Source: ESRI Attribute_Domain_Values: Unrepresentable_Domain: area in square meters Attribute: Attribute_Label: PERIMETER Attribute_Definition: perimeter of region polygon Attribute_Definition_Source: ESRI Attribute_Domain_Values: Unrepresentable_Domain: perimeter in meters Attribute: Attribute_Label: FOOT_ID Attribute_Definition: sequential identification number Attribute_Definition_Source: this study Attribute_Domain_Values: Unrepresentable_Domain: user identification number Attribute: Attribute_Label: LABEL Attribute_Definition: identity of mosaic image Attribute_Definition_Source: this study Attribute_Domain_Values: Unrepresentable_Domain: identification label Attribute: Attribute_Label: VIDMOSAIC Attribute_Definition: name of image file Attribute_Definition_Source: this study Attribute_Domain_Values: Unrepresentable_Domain: name of TIFF image file Attribute: Attribute_Label: DATA_URL Attribute_Definition: path to data folder Attribute_Definition_Source: this study. Attribute_Domain_Values: Unrepresentable_Domain: path to data files Distribution_Information: Distributor: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Person: Florence L. Wong Contact_Address: Address_Type: mailing address Address: 345 Middlefield Road Mail Stop 999 City: Menlo Park State_or_Province: CA Postal_Code: 94025 Country: USA Contact_Voice_Telephone: (650) 329-5327 Contact_Electronic_Mail_Address: fwong@usgs.gov Resource_Description: Downloadable Data 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. Standard_Order_Process: Digital_Form: Digital_Transfer_Information: Format_Name: ARCE Format_Version_Number: 9.3.1 File_Decompression_Technique: unzip Transfer_Size: 0.031 Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: http://pubs.usgs.gov/ds/552/ Fees: None. Metadata_Reference_Information: Metadata_Date: 20100601 Metadata_Review_Date: 2010 Metadata_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Person: Florence L Wong Contact_Address: Address_Type: mailing address Address: 345 Middlefield Road Mail Stop 999 City: Menlo Park State_or_Province: CA Postal_Code: 94025 Country: USA Contact_Voice_Telephone: 650-329-5327 Contact_Electronic_Mail_Address: fwong@usgs.gov Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata Metadata_Standard_Version: FGDC-STD-001-1998 Metadata_Time_Convention: local time Metadata_Extensions: Online_Linkage: http://www.esri.com/metadata/esriprof80.html Profile_Name: ESRI Metadata Profile