Benthic Habitat Mapping - Dry Tortugas RoxAnn Acoustic Sensor Data Points

Metadata:

• Identification_Information
• Data_Quality_Information
• Spatial_Data_Organization_Information
• Spatial_Reference_Information
• Entity_and_Attribute_Information
• Distribution_Information
• Metadata_Reference_Information
• CoRIS

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>

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