Identification_Information: Citation: Citation_Information: Originator: Department of Commerce (DOC), National Oceanic and Atmospheric Administration (NOAA), National Ocean Service (NOS), Coastal Services Center (CSC) Publication_Date: 20050801 Title: Benthic Habitat Mapping - Dry Tortugas RoxAnn Acoustic Sensor Data Points Edition: 1.0 Geospatial_Data_Presentation_Form: Map Publication_Information: Publication_Place: Charleston, SC Publisher: NOAA's Ocean Service, Coastal Services Center (CSC) Online_Linkage: http://www.csc.noaa.gov/digitalcoast/data/benthicsba Online_Linkage: ftp://ftp.csc.noaa.gov/pub/benthic/Single_Beam_Acoustic_Data/FL_DryTortugas_rox.zip Online_Linkage: http://www.csc.noaa.gov/digitalcoast/data/benthicsba/download Online_Linkage: http://www.csc.noaa.gov/ Larger_Work_Citation: Citation_Information: Originator: NOAA Beaufort Laboratory Publication_Date: 20040401 Title: Biogeographic Analysis of the Tortugas Ecological Reserve Examining the Refuge Effect Following Reserve Establishment Publication_Information: Publication_Place: Silver Spring, MD Publisher: Marine Sanctuaries Division Description: Abstract: During April 2001 RoxAnn single-beam acoustic surveys were conducted at the North Unit of the Tortugas Ecological Reserve, Florida. Thirteen transects associated with fixed bottom sampling stations were surveyed to characterize the ecotone around the stations. In addition survey tracks were run along the outer edge of the Tortugas platform reef complex and into the interior of the platform. A towed video sled (minibat) was deployed simultaneously with the RoxAnn survey which provided a live video ground truth to the acoustic signals. Using this ground truth several bottom classes were identified including coral, seagrass, algae, unconsolidated sediments, and hardbottoms. The original RoxAnn categories are preserved in the Class field and benthic habitat codes from the Florida System for Classifying Estuarine and Marine Environments (SCHEME) system are preserved in the SCHEME field. The depth value is in meters below transducer surface. Purpose: The single-beam surveys were part of a larger biogeographic characterization effort intended to characterize benthic habitats, ocean circulation patterns, in the newly established Tortugas Ecological Reserve. The goal of the project was to establish a baseline of environmental conditions and processes that could be compared to future surveys. This would support evaluations of various reserve managment strategies. Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 20010408 Ending_Date: 20010412 Currentness_Reference: Ground Condition Status: Progress: Complete Maintenance_and_Update_Frequency: None planned Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -83.0003 East_Bounding_Coordinate: -82.7618 North_Bounding_Coordinate: 24.7391 South_Bounding_Coordinate: 24.5195 Keywords: Theme: Theme_Keyword_Thesaurus: None Theme_Keyword: Environmental Monitoring Theme_Keyword: RoxAnn Theme_Keyword: Single-Beam Acoustics Theme_Keyword: Benthic Habitat Theme_Keyword: Depth Theme_Keyword: SCHEME Theme_Keyword: CSC Benthic Habitat Mapping Theme_Keyword: CoRIS Theme: Theme_Keyword_Thesaurus: ISO 19115 Topic Category Theme_Keyword: environment Theme_Keyword: 007 Theme_Keyword: biota Theme_Keyword: 002 Theme: Theme_Keyword_Thesaurus: CoRIS Discovery Thesaurus Theme_Keyword: Geographic Information > Habitats Theme: Theme_Keyword_Thesaurus: CoRIS Theme Thesaurus Theme_Keyword: EARTH SCIENCE > Oceans > Coastal Processes > Coral Reefs > Coral Reef Ecology > Habitats Theme_Keyword: EARTH SCIENCE > Biosphere > Zoology > Corals > Reef Monitoring and Assessment > Mapping > Habitat Mapping Place: Place_Keyword_Thesaurus: None Place_Keyword: Gulf of Mexico Place_Keyword: Florida Place_Keyword: Dry Tortugas Place_Keyword: Tortugas Ecological Reserve Place_Keyword: Florida Keys National Marine Sanctuary Place: Place_Keyword_Thesaurus: CoRIS Place Thesaurus Place_Keyword: OCEAN BASIN > Atlantic Ocean > North Atlantic Ocean > Florida Reef Tract > Dry Tortugas > Dry Tortugas (24N082W0001) Place_Keyword: COUNTRY/TERRITORY > United States of America > Florida > Monroe County > Dry Tortugas (24N082W0001) Place_Keyword: COUNTRY/TERRITORY > United States of America > Florida > Monroe County > Florida Keys (24N081W0007) Place_Keyword: OCEAN BASIN > Atlantic Ocean > North Atlantic Ocean > Florida Reef Tract > Florida Keys (24N081W0007) Place: Place_Keyword_Thesaurus: CoRIS Region Place_Keyword: Florida Access_Constraints: None Use_Constraints: Bathymetric data have not been corrected for tide and wind variables. Not for use in navigation. Point_of_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: NOAA Coastal Services Center Contact_Address: Address_Type: mailing and physical Address: 2234 South Hobson Avenue City: Charleston State_or_Province: South Carolina Postal_Code: 29405 Country: USA Contact_Voice_Telephone: (843) 740-1264 Contact_Facsimile_Telephone: (843) 740-1289 Hours_of_Service: 8:00 - 17:00 EST Native_Data_Set_Environment: ArcView version 3.2 shapefile format Data_Quality_Information: Attribute_Accuracy: Attribute_Accuracy_Report: This data is accurate to field conditions in April 2001. The depth readings have not been corrected for tide stage or wind variables. A towed video system (mini-bat) was deployed behind the vessel where the acoustic transducer was deployed. This provided real-time ground-truth to the acoustic signals. As habitat boundaries were crossed, the RoxAnn acoustic signature box was updated and checked. In addition dive observations were made along the transects to verify the habitat classes. Logical_Consistency_Report: These data are believed to be logically consistent, though no tests have been performed. Point geometry is topologically clean. Completeness_Report: The data is complete. Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: The horizontal positional accuracy is based on the accuracy of the GPS used to generate the coordinate pair for each acoustic record. The GPS unit was a military grade receiver enabled to receive encrypted Y-code from the GPS satellites. his typically produces a spatial accuracy of 10 meters or less. Vertical_Positional_Accuracy: Vertical_Positional_Accuracy_Report: Depth value is in meters below transducer. No correction has been applied for wind or tide effects. No validation was performed on this data and no accuracy is implied. Lineage: Source_Information: Source_Citation: Citation_Information: Originator: Department of Commerce (DOC), National Oceanic and Atmospheric Administration (NOAA), National Ocean Service (NOS), Coastal Services Center (CSC) Publication_Date: 20050801 Title: Dry Tortugas RoxAnn Points Edition: 1.0 Geospatial_Data_Presentation_Form: map Publication_Information: Publication_Place: Charleston, SC Publisher: NOAA's Ocean Service, Coastal Services Center (CSC) Online_Linkage: http://www.csc.noaa.gov/benthic/data/data.htm Larger_Work_Citation: Citation_Information: Originator: NOAA Beaufort Laboratory Publication_Date: 20040401 Title: Biogeographic Analysis of the Tortugas Ecological Reserve Examining the Refuge Effect Following Reserve Establishment Publication_Information: Publication_Place: Silver Spring, MD Publisher: NOAA Marine Sanctuaries Division Type_of_Source_Media: map Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 20010408 Ending_Date: 20010412 Source_Currentness_Reference: Ground Condition Source_Citation_Abbreviation: NOAA CSC Source_Contribution: Unknown Process_Step: Process_Description: Between 8 and 12 April 2001 RoxAnn single-beam acoustic data were collected along 16 transects running across the edge of the Tortugas platform reef. The transducer was mounted on a pole attached to the side of the research vessel and was co-located with a PLGR GPS unit. Data were recorded at 1 second intervals. The E1 and E2 signals received were displayed and logged in the normal RoxMap Scientific software environment. The vessel speed during collection was approximately 4 kts. Simultaneous to collection of the acoustic data a towed video sled was deployed astern of the ship. The picture from this video was displayed in the lab within view of the RoxAnn data analyst. This allowed a near real-time reference for the acoustic data. This ground-truth was used to assign the RoxAnn soundings into several bottom classes. At the conclusion of each transect run. The instrument was shut off until the next transect was visited. Process_Date: 200104 Process_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: NOAA Coastal Services Center Contact_Address: Address_Type: mailing and physical Address: 2234 South Hobson Avenue City: Charleston State_or_Province: South Carolina Postal_Code: 20405 Country: USA Contact_Voice_Telephone: (843) 740-1264 Contact_Facsimile_Telephone: (843) 740-1289 Contact_Electronic_Mail_Address: clearinghouse@noaa.gov Hours_of_Service: 08:00 - 17:00 EST Process_Step: Process_Description: The full RoxAnn record collected during the April cruise was exported from the RoxMap environment and converted into ESRI shapefile format for further analysis. A set of tools developed at CSC specifically for cleaning RoxAnn data were used to remove noise and anomalous points from the record. These points included spikes and pits in the bathymetry as well as bad data caused by surface turbulence. Each bottom class in the data was then exported individually and displayed on a scatterplot of E1 vs. E2 values to examine its geometry. The cluster means (E1 and E2) for each class were also displayed relative to each other as a logical check between classes. The final results were recoded into the Florida SCHEME benthic habitat classification system to ensure consistency with other CSC benthic data. Process_Date: 20031201 Process_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: NOAA Coastal Services Center Contact_Address: Address_Type: mailing and physical Address: 2234 South Hobson Avenue City: Charleston State_or_Province: South Carolina Postal_Code: 20405 Country: USA Contact_Voice_Telephone: (843) 740-1264 Contact_Facsimile_Telephone: (843) 740-1289 Contact_Electronic_Mail_Address: clearinghouse@noaa.gov Hours_of_Service: 08:00 - 17:00 EST Spatial_Data_Organization_Information: Direct_Spatial_Reference_Method: Point Point_and_Vector_Object_Information: SDTS_Terms_Description: SDTS_Point_and_Vector_Object_Type: Point Point_and_Vector_Object_Count: 25933 Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Planar: Grid_Coordinate_System: Grid_Coordinate_System_Name: Universal Transverse Mercator Universal_Transverse_Mercator: UTM_Zone_Number: 17 Transverse_Mercator: Scale_Factor_at_Central_Meridian: 0.999600 Longitude_of_Central_Meridian: -81.000000 Latitude_of_Projection_Origin: 0.000000 False_Easting: 500000.000000 False_Northing: 0.000000 Planar_Coordinate_Information: Planar_Coordinate_Encoding_Method: Row and Column Coordinate_Representation: Abscissa_Resolution: 1 Ordinate_Resolution: 1 Planar_Distance_Units: unknown. Abscissa/Ordinate Resolution values were unreported and populated with one to satisfy validation requirements Geodetic_Model: Horizontal_Datum_Name: North American Datum of 1983 Ellipsoid_Name: GRS 80 Semi-major_Axis: 6378137.0000000 Denominator_of_Flattening_Ratio: 298.26 Entity_and_Attribute_Information: Detailed_Description: Entity_Type: Entity_Type_Label: fl_dt01.dbf Entity_Type_Definition: Shapefile Attribute Table Entity_Type_Definition_Source: None Attribute: Attribute_Label: Class Attribute_Definition: Unknown Attribute_Definition_Source: Unknown Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0 Range_Domain_Maximum: 30 Attribute: Attribute_Label: Latitude Attribute_Definition: Unknown Attribute_Definition_Source: Unknown Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 24.52 Range_Domain_Maximum: 24.7381 Attribute: Attribute_Label: Longitude Attribute_Definition: Unknown Attribute_Definition_Source: Unknown Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -82.9984 Range_Domain_Maximum: -82.7639 Attribute: Attribute_Label: Depth Attribute_Definition: Unknown Attribute_Definition_Source: Unknown Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -35.55 Range_Domain_Maximum: -5.59 Attribute: Attribute_Label: E1 Attribute_Definition: Unknown Attribute_Definition_Source: Unknown Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.029 Range_Domain_Maximum: 2.64 Attribute: Attribute_Label: E2 Attribute_Definition: Unknown Attribute_Definition_Source: Unknown Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.02 Range_Domain_Maximum: 1.289 Attribute: Attribute_Label: Time Attribute_Definition: Unknown Attribute_Definition_Source: Unknown Attribute_Domain_Values: Unrepresentable_Domain: Eastern Daylight Time Attribute: Attribute_Label: Date_ Attribute_Definition: Unknown Attribute_Definition_Source: Unknown Attribute_Domain_Values: Unrepresentable_Domain: Date Attribute: Attribute_Label: Scheme Attribute_Definition: Unknown Attribute_Definition_Source: Unknown Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 3 Range_Domain_Maximum: 342 Attribute: Attribute_Label: Modifier Attribute_Definition: Unknown Attribute_Definition_Source: Unknown Attribute_Domain_Values: Unrepresentable_Domain: SCHEME Modifier Attribute: Attribute_Label: Habitat Attribute_Definition: Unknown Attribute_Definition_Source: Unknown Attribute_Domain_Values: Unrepresentable_Domain: Habitat Description Distribution_Information: Distributor: Contact_Information: Contact_Organization_Primary: Contact_Organization: NOAA Coastal Services Center Contact_Position: Clearinghouse Manager Contact_Address: Address_Type: mailing and physical Address: 2234 South Hobson Avenue City: Charleston State_or_Province: South Carolina Postal_Code: 29405 Country: USA Contact_Voice_Telephone: (843) 740-1264 Contact_Facsimile_Telephone: (843 740-1289 Contact_Electronic_Mail_Address: clearinghouse@noaa.gov Hours_of_Service: 08:00 - 17:00 EST Resource_Description: Downloadable Data Distribution_Liability: Single-beam acoustic data points collected in the Dry Tortugas area of Florida. While every effort has been made to ensure that these data are accurate and reliable within limits of the state of the art, NOAA will not assume any liability for damages caused by any inaccuracies in these data, or failure in their use. Metadata_Reference_Information: Metadata_Date: 20121220 Metadata_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: NOAA Coastal Services Center Contact_Position: Metadata Specialist Contact_Address: Address_Type: mailing and physical Address: 2234 South Hobson Avenue City: Charleston State_or_Province: South Carolina Postal_Code: 29405 Country: USA Contact_Voice_Telephone: (843) 740-1210 Contact_Electronic_Mail_Address: clearinghouse@noaa.gov Hours_of_Service: 08:00 - 17:00 EST Metadata_Standard_Name: FGDC Content Standard for Digital Geospatial Metadata Metadata_Standard_Version: FGDC-STD-001-1998 Online_Linkage: http://www.ncddc.noaa.gov/metadataresource/metadata-references/files/ncddcmdprofile_v2.pdf Content Specification for Metadata in the National Coastal Data Development Center's Data Catalog Version 2.0 CoRIS: CoRIS_ID: 20081219063346 CoRIS_Children: None CoRIS_Beginning_Date: 20010408 CoRIS_Ending_Date: 20010412 CoRIS_Metadata_Link: http://www.coris.noaa.gov/metadata/records/html/fl_dt01.html CoRIS_Tracking_ID: 2477