Identification_Information: Citation: Citation_Information: Originator: Dann Blackwood Originator: David C. Twichell Originator: Robert B. Halley Originator: VeeAnn A. Cross Publication_Date: 2004 Title: SeaBOSS images from cruise SUN03002: JPEG format Online_Linkage: http://pubs.usgs.gov/of/2004/1228/data/seaboss Larger_Work_Citation: Citation_Information: Online_Linkage: http://pubs.usgs.gov/of/2004/1228 Description: Abstract: Pulley Ridge is a series of drowned barrier islands that extend over 100 km in 60-100 m water depths. This drowned ridge is located on the Florida Platform in the southeastern Gulf of Mexico about 250 km west of Cape Sable, Florida. This barrier island chain formed during the initial stage of the Holocene marine transgression. These islands were then submerged and left abandoned near the outer edge of the Florida Platform. The southern portion of Pulley Ridge hosts zooxanthellate scleractinian corals, green, red and brown macro algae, and a mix of deep and typically shallow-water tropical fishes. This reef community is in unusually deep water, and its extent and the controls on its distribution were unknown. To address these questions scientists from the U.S. Geological Survey Coastal and Marine Geology Program in cooperation with scientists from the University of South Florida Department of Marine Sciences have completed a detailed mapping of the southernmost 35 km of Pulley Ridge. The area was mapped using multibeam bathymetry, sidescan-sonar imagery, and high-resolution seismic-reflection profiling to define the geologic framework on which the reef is established. Submersible dives, remotely operated vehicle (ROV) transects, and transects of bottom photographs and video were collected to identify the corals and to map their distribution. This extensive suite of data has been compiled and preliminary analysis of the data suggests that the reefs are not tied to the ridge system, but instead are more broadly distributed. Whether reef distribution is controlled by oceanographic conditions or by subtle differences in the substrate that overlies the barrier island system is unclear, and are topics of continued research. Purpose: These seafloor bottom images indicate the type and presence of coral in the Pulley Ridge area. These photos can be combined with the photo navigation to draw a more complete picture of coral distribution in the area. Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 20030425 Ending_Date: 20030430 Currentness_Reference: ground condition Status: Progress: Complete Maintenance_and_Update_Frequency: None planned Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -83.738463 East_Bounding_Coordinate: -83.644162 North_Bounding_Coordinate: 24.95624 South_Bounding_Coordinate: 24.706245 Keywords: Theme: Theme_Keyword_Thesaurus: General Theme_Keyword: bottom photo Theme_Keyword: CMGP Theme_Keyword: Coastal and Marine Geology Program Theme_Keyword: coral Theme_Keyword: coral reef Theme_Keyword: digital photo Theme_Keyword: images Theme_Keyword: JPEG Theme_Keyword: OF 2004-1228 Theme_Keyword: Open-File Report Theme_Keyword: reef Theme_Keyword: SeaBOSS Theme_Keyword: U.S. Geological Survey Theme_Keyword: USGS Theme_Keyword: Woods Hole Science Center Theme_Keyword: field activity identifier S-1-03-FL Theme_Keyword: field activity serial number 03002 Place: Place_Keyword_Thesaurus: General Place_Keyword: Florida Place_Keyword: Florida Shelf Place_Keyword: Gulf of Mexico Place_Keyword: North America Place_Keyword: Pulley Ridge Place_Keyword: United States Access_Constraints: None. Use_Constraints: The U.S. Geological Survey must be referenced as the originator of the dataset in any future products or research derived from these data. Point_of_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Robert B. Halley Contact_Organization: U.S. Geological Survey Contact_Position: Geologist Contact_Address: Address_Type: mailing and physical address Address: USGS Center for Coastal and Watershed Studies Address: 600 Fourth Street South City: St. Petersburg State_or_Province: FL Postal_Code: 33701-4846 Contact_Voice_Telephone: (727) 803-8747 x3113 Contact_Facsimile_Telephone: (727) 803-2032 Contact_Electronic_Mail_Address: rhalley@usgs.gov Native_Data_Set_Environment: Microsoft Windows 2000 Version 5.0 (Build 2195) Service Pack 4; ESRI ArcCatalog 8.2.0.700 Data_Quality_Information: Lineage: Process_Step: Process_Description: The USGS SeaBOSS system was deployed to capture still photos and bottom imagery from the Pulley Ridge area in the Gulf of Mexico. The still photos are recorded on long rolls of film. Process_Step: Process_Description: This film was then sent to Two Cat Digital company in California to be digitized into PCD image format and written to CD. Process_Step: Process_Description: The PCD image format is a multi-resolution format. The convert command from Imagick, running under Cygwin, was used to extract the 1536 x 1024 resolution image and convert it to JPEG format. Spatial_Data_Organization_Information: Direct_Spatial_Reference_Method: Raster Raster_Object_Information: Row_Count: 1024 Column_Count: 1536 Entity_and_Attribute_Information: Overview_Description: Entity_and_Attribute_Overview: Although the images themselves have no georeferencing information, the navigation from when each photograph was taken is in an ESRI formatted shapefile. Distribution_Information: Distributor: Contact_Information: Contact_Person_Primary: Contact_Person: Robert B. Halley Contact_Organization: U.S. Geological Survey Contact_Position: Geologist Contact_Address: Address_Type: mailing and physical address Address: USGS Center for Coastal and Watershed Studies Address: 600 Fourth Street South City: St. Petersburg State_or_Province: FL Postal_Code: 33701-4846 Contact_Voice_Telephone: (727) 803-8747 x3113 Contact_Facsimile_Telephone: (727) 803-2032 Contact_Electronic_Mail_Address: rhalley@usgs.gov Resource_Description: Downloadable Data Distribution_Liability: These data were prepared by an agency of the United States Government. Neither the United States government nor any agency thereof, nor any of their employees, make any warranty, expressed or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed in this report, or represents that its use would not infringe privately owned rights. Reference therein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise does not necessarily constitute or imply its endorsement, recommendation, or favoring by the United States government or any agency thereof. Any views and opinions of authors expressed herein do not necessarily state or reflect those of the United States government or any agency thereof. Although all data published in this report have been used by the USGS, no warranty, expressed or implied, is made by the USGS as to the accuracy of the data and related materials and/or the functioning of the software. The act of distribution shall not constitute any such warranty, and no responsibility is assumed by the USGS in the use of this data, software, or related materials. Metadata_Reference_Information: Metadata_Date: 20040629 Metadata_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: VeeAnn A. Cross Contact_Organization: U.S. Geological Survey Contact_Position: Marine Geologist Contact_Address: Address_Type: mailing and physical address Address: 384 Woods Hole Rd. City: Woods Hole State_or_Province: MA Postal_Code: 02543-1598 Contact_Voice_Telephone: (508) 548-8700 x2251 Contact_Facsimile_Telephone: (508) 457-2310 Contact_Electronic_Mail_Address: vatnipp@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