St. John Shallow Water Accuracy Assessment Sites

Metadata also available as [Questions & Answers] - [Parseable text] - [XML]

Metadata:


Identification_Information:
Citation:
Citation_Information:
Originator: Laurie Bauer, NOAA/NOS/NCCOS/CCMA Biogeography Branch
Publication_Date: 2009
Title: St. John Shallow Water Accuracy Assessment Sites
Geospatial_Data_Presentation_Form: vector digital data
Publication_Information:
Publication_Place: Silver Spring, MD
Publisher:
NOAA's Ocean Service, National Centers for Coastal Ocean Science (NCCOS)
Other_Citation_Details:
Please use citation for the written document "Benthic Habitats of St. John, U.S. Virgin Islands" when using these data.
Online_Linkage: <http://ccma.nos.noaa.gov/ecosystems/coralreef/benthic/>
Larger_Work_Citation:
Citation_Information:
Originator:
Department of Commerce (DOC), National Oceanic and Atmospheric Administration (NOAA), National Ocean Service (NOS), National Centers for Coastal Ocean Science (NCCOS), Center for Coastal Monitoring and Assessment (CCMA), Biogeography Program
Publication_Date: 2009
Title: Benthic Habitats of St. John, U.S. Virgin Islands
Geospatial_Data_Presentation_Form: document
Publication_Information:
Publication_Place: Silver Spring, MD
Publisher: NOAA National Centers for Coastal Ocean Science
Other_Citation_Details:
Zitello, A.G., L.J. Bauer, T.A. Battista, P.W. Mueller and M.S. Kendall. 2009. Benthic Habitats of St. John, U.S. Virgin Islands. NOAA Technical Memorandum NOS NCCOS 96. 50 pp.
Description:
Abstract:
Benthic habitat maps of the nearshore marine environment of St. John, U.S. Virgin Islands were created by visual interpretation of remotely sensed imagery. The objective of this effort, conducted by NOAA's Center for Coastal Monitoring and Assessment - Biogeography Branch in partnership with the U.S. National Park Service (NPS), was to provide spatially-explicit information on the habitat types, biological cover and live coral cover of St. John's coral reef ecosystem. The data described herein represent accuracy assessment (AA) sites explored by NOAA field scientists to evaluate the thematic accuracy of the benthic habitat maps of St. John.
Purpose:
The purpose of this survey data was to collect information on current habitat conditions at random locations throughout the mapping area. Locations were determined by an iterative, GIS-based, stratified random sampling technique to ensure that all bottom classifications would be assessed. This information was used to evaluate the thematic accuracy of the St. John benthic habitat map.
Supplemental_Information:
Data were collected on 486 ground validation sites over a two-week field mission from February 9-20, 2009 aboard U.S. National Park Service small research vessels. Based on guidelines from other recent NOAA accuracy assessment analyses (Battista et al. 2007), a minimum of 25 points were assigned to each of the 13 detailed structure classes within the draft habitat map. An additional 175 points were distributed based on the proportion of area of each structure class in the map. Several pre-selected sites were inaccessible by field scientists or were not classified due to visibility restrictions.
Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 20090209
Ending_Date: 20090220
Currentness_Reference: ground condition
Status:
Progress: Complete
Maintenance_and_Update_Frequency: None planned
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -64.839362
East_Bounding_Coordinate: -64.645725
North_Bounding_Coordinate: 18.373507
South_Bounding_Coordinate: 18.297224
Keywords:
Theme:
Theme_Keyword_Thesaurus: CoRIS Theme Thesaurus
Theme_Keyword: EARTH SCIENCE > Biosphere > Aquatic Habitat > Benthic Habitat
Theme:
Theme_Keyword_Thesaurus: CoRIS Discovery Thesaurus
Theme_Keyword: Geographic Information > Habitats
Theme:
Theme_Keyword_Thesaurus: None
Theme_Keyword: coral reef
Theme_Keyword: benthic habitats
Theme_Keyword: reef
Theme_Keyword: submerged aquatic vegetation
Theme_Keyword: unconsolidated sediments
Theme_Keyword: zone
Theme_Keyword: geomorphological structure
Theme_Keyword: biological cover
Theme_Keyword: accuracy assessment
Theme_Keyword: point
Theme:
Theme_Keyword_Thesaurus: ISO 19115 Topic Category
Theme_Keyword: environment
Theme_Keyword: 007
Theme_Keyword: imageryBaseMapsEarthCover
Theme_Keyword: 010
Place:
Place_Keyword_Thesaurus: None
Place_Keyword: United States
Place_Keyword: U. S. Virgin Islands
Place_Keyword: St. John
Place:
Place_Keyword_Thesaurus: CoRIS Place Thesaurus
Place_Keyword:
COUNTRY/TERRITORY > United States of America > U. S. Virgin Islands > St. John > St. John (18N064W0011)
Place_Keyword:
OCEAN BASIN > Atlantic Ocean > Caribbean Sea > Virgin Islands > Virgin Islands > St. John (18N064W0011)
Place:
Place_Keyword_Thesaurus: CoRIS Region
Place_Keyword: USVI
Access_Constraints: None
Use_Constraints: Not for navigation.
Point_of_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Tim Battista
Contact_Organization: NOAA National Ocean Service
Contact_Position: Researcher
Contact_Address:
Address_Type: mailing and physical
Address: 1305 East West Highway
City: Silver Spring
State_or_Province: MD
Postal_Code: 20910
Country: USA
Contact_Voice_Telephone: (301) 713-3028 x171
Contact_Facsimile_Telephone: (301) 713-4388
Contact_Electronic_Mail_Address: Tim.Battista@noaa.gov
Native_Data_Set_Environment:
Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 3; ESRI ArcCatalog 9.3.0.1770

Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report:
The points in this thematic data layer were acquired by GPS data using a Trimble GeoXT receiver with a customized data dictionary designed to reflect the habitat classification scheme described in "Benthic Habitats of St. John, U.S. Virgin Islands" (Zitello et al. 2009). All habitat determinations were made in the field by trained NOAA scientists, recorded in the GPS data logger and seamlessly transferred to ArcGIS shapefiles using Trimble Pathfinder Office software. Attributes are all expected to be correct.
Logical_Consistency_Report:
Data points with accompanying attribute information were collected with mapping-grade GPS receivers. The data were post processed for differential correction to the Continually Operating Reference System (CORS) station at St. Thomas, U.S. Virgin Islands (VITH). Site information was recorded in the field both in a data dictionary within the GPS receiver and on waterproof field sheets. A comparison between soft and hard copy data records were completed to ensure attribute collection consistency.

Furthermore, underwater video was recorded at each site to maintain a record of habitat condition. This video was reviewed by NOAA staff in the office to ensure correct habitat attribution was made in the field.

All errors were identified through these quality assurance techniques and corrected. This file is believed to be logically consistent.

Completeness_Report:
486 field positions were occupied and habitat characterizations were conducted for accuracy assessment during this work. These data were plotted in concert with remotely sensed imagery to assess the benthic habitat classifications at random locations throughoout the map. Further analysis was conducted to calculate a suite of thematic accuracy assessment metrics and is described in Zitello et al. (2009).
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report:
The true positional accuracy of individual epics was determined to be within 1 m for 96% of the logged points. For each survey site, individual epics were averaged to generate a mean GPS point for each location.
Lineage:
Source_Information:
Source_Citation:
Citation_Information:
Originator: NOAA
Publication_Date: 2009
Title: GPS data
Type_of_Source_Media: GPS data
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 2009
Source_Currentness_Reference: ground condition
Source_Citation_Abbreviation: Trimble SSF files
Source_Contribution:
GPS data, which were originally recorded as code-phase signals in Trimble SSF format, were differentially post-processed to the Continually Operating Reference System (CORS) station at St. Thomas, U.S. Virgin Islands (VITH).
Process_Step:
Process_Description:
A benthic habitat map was generated from delineating features by visual inspection of remotely sensed imagery and incorporation of field data acquired during a ground validation mission. Target locations for the accuracy assessment of this habitat map were determined by an iterative, GIS-based, stratified random sampling technique to ensure that all bottom classifications would be assessed. Based on guidelines from other recent accuracy assessment analyses (Battista et al. 2007), a minimum of 25 points were assigned to each of the 13 detailed structure classes within the draft habitat map. An additional 175 points were distributed based on the proportion of area of each structure class in the map. Points were randomly placed within each class using Hawth's Analysis Tools (Beyer 2004) in ArcGIS at a minimum distance of 50 m apart. Next, the number of points that fell within each detailed primary cover class was calculated. Where necessary, additional points were randomly added and re-distributed from classes with many points to ensure that there was a minimum of 25 points within each detailed cover class.

Process Dates: 2008-2009

Process_Date: 2009
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Laurie Bauer
Contact_Organization: NOAA/NOS/NCCOS/CCMA Biogeography Branch
Contact_Address:
Address_Type: physical address
Address: 1305 East West Highway
City: Silver Spring
State_or_Province: MD
Postal_Code: 20910
Country: U.S.A.
Contact_Voice_Telephone: (301) 713 - 3028
Process_Step:
Process_Description:
NOAA field scientists explored the accuracy assessment locations with a suite of assessment techniques depending on the conditions at each site. A combination of underwater video (primary method), free diving, snorkeling and surface observations were used to survey the ecological characteristics at each location.

At the start of every morning, the boat captain selected a general region to begin the day's work. Navigating to field locations was accomplished using a Garmin GPS 76 device with the uploaded GV site coordinates. The boat captain maneuvered the vessel to within 5 m of the target location and made every effort to maintain that location without jeopardizing crew and equipment safety. Once on site, NOAA scientists would simultaneously deploy a SeaViewer Sea-Drop 950 camera and begin logging a waypoint on a Trimble GeoXT GPS receiver.While the video camera was capturing bottom imagery, an observer viewed the video real-time on a Panasonic Toughbook aboard the survey vessel. They categorized each site according to the levels of the habitat classification scheme: major and detailed geomorphological structure, major biological cover, percent major biological cover and percent coral cover. Data was entered into a custom data dictionary generated in Trimble Pathfinder Office software and loaded onto the Trimble data logger.

Process_Date: 2009
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Laurie Bauer
Contact_Organization: NOAA/NOS/NCCOS/CCMA Biogeography Branch
Contact_Address:
Address_Type: physical address
Address: 1305 East West Highway
City: Silver Spring
State_or_Province: MD
Postal_Code: 20910
Country: U.S.A.
Contact_Voice_Telephone: (301) 713 - 3028
Process_Step:
Process_Description:
Trimble Pathfinder Office software was used to post process and differentially correct the raw GPS data to the Continually Operating Reference System (CORS) station at St. Thomas, U.S. Virgin Islands (VITH).
Process_Date: 2009
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Tim Battista
Contact_Organization: NOAA National Ocean Service
Contact_Position: Researcher
Contact_Address:
Address_Type: mailing and physical
Address: 1305 East West Highway
City: Silver Spring
State_or_Province: MD
Postal_Code: 20910
Country: USA
Contact_Voice_Telephone: (301) 713-3028 x171
Contact_Facsimile_Telephone: (301) 713-4388
Contact_Electronic_Mail_Address: Tim.Battista@noaa.gov
Process_Step:
Process_Description:
Ultimately, precisely positioned GPS positions and the associated classification data were viewed in a GIS to assess the accuracy of the draft benthic habitat map.
Process_Date: 2009
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Laurie Bauer
Contact_Organization: NOAA/NOS/NCCOS/CCMA Biogeography Branch
Contact_Address:
Address_Type: physical address
Address: 1305 East West Highway
City: Silver Spring
State_or_Province: MD
Postal_Code: 20910
Country: U.S.A.
Contact_Voice_Telephone: (301) 713 - 3028

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: 486

Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Planar:
Grid_Coordinate_System:
Grid_Coordinate_System_Name: Universal Transverse Mercator
Universal_Transverse_Mercator:
UTM_Zone_Number: 20
Transverse_Mercator:
Scale_Factor_at_Central_Meridian: 0.999600
Longitude_of_Central_Meridian: -63.000000
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: 0.000001
Ordinate_Resolution: 0.000001
Planar_Distance_Units: meters
Geodetic_Model:
Horizontal_Datum_Name: North American Datum of 1983
Ellipsoid_Name: Geodetic Reference System 80
Semi-major_Axis: 6378137.000000
Denominator_of_Flattening_Ratio: 298.257224

Entity_and_Attribute_Information:
Detailed_Description:
Entity_Type:
Entity_Type_Label: St. John Accuracy Assessment Sites
Entity_Type_Definition: Shapefile attribute table
Entity_Type_Definition_Source: None
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: Site_ID
Attribute_Definition: Unique identifier for each accuracy assessment site
Attribute_Definition_Source: NOAA
Attribute_Domain_Values:
Codeset_Domain:
Codeset_Name: Arbitrarily defined unique code
Codeset_Source: Specific to this field mission
Attribute:
Attribute_Label: Date_
Attribute_Definition: Date of site visit and data collection
Attribute_Definition_Source: NOAA
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 2009 February 9
Range_Domain_Maximum: 2009 February 20
Attribute:
Attribute_Label: Time
Attribute_Definition: Time of site visit and data collection
Attribute_Definition_Source: NOAA
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 06:00:00am
Range_Domain_Maximum: 06:00:00pm
Attribute:
Attribute_Label: Type
Attribute_Definition: Purpose of data collection
Attribute_Definition_Source: NOAA
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: AA
Enumerated_Domain_Value_Definition: Accuracy Assessment
Enumerated_Domain_Value_Definition_Source: Unknown
Attribute:
Attribute_Label: Assessment
Attribute_Definition: Method used to obtain habitat characterization information
Attribute_Definition_Source: NOAA
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Drop Camera
Enumerated_Domain_Value_Definition: SeaViewer Sea-Drop 950 underwater camera
Enumerated_Domain_Value_Definition_Source: Unknown
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Snorkel
Enumerated_Domain_Value_Definition:
NOAA scientist visually characterized habitat by free diving or surface swimming with a mask and snorkel
Enumerated_Domain_Value_Definition_Source: Unknown
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Other
Enumerated_Domain_Value_Definition:
Any other assessment technique, including inspection from the vessel deck with a "look bucket" or binoculars
Enumerated_Domain_Value_Definition_Source: Unknown
Attribute:
Attribute_Label: Maj_Struct
Attribute_Definition: Major Geomorphological Structure
Attribute_Definition_Source:
Refer to Chapter 1: Benthic Habitat Classification Scheme of "Benthic Habitats of St. John, U.S. Virgin Islands" (Zitello et al. 2009)
Attribute_Domain_Values:
Unrepresentable_Domain: Unknown
Attribute:
Attribute_Label: Det_Struct
Attribute_Definition: Detailed Geomorphological Structure
Attribute_Definition_Source:
Refer to Chapter 1: Benthic Habitat Classification Scheme of "Benthic Habitats of St. John, U.S. Virgin Islands" (Zitello et al. 2009)
Attribute_Domain_Values:
Unrepresentable_Domain: Unknown
Attribute:
Attribute_Label: Maj_Cover
Attribute_Definition: Major Biological Cover
Attribute_Definition_Source:
Refer to Chapter 1: Benthic Habitat Classification Scheme of "Benthic Habitats of St. John, U.S. Virgin Islands" (Zitello et al. 2009)
Attribute_Domain_Values:
Unrepresentable_Domain: Unknown
Attribute:
Attribute_Label: P_Maj_Cov
Attribute_Definition: Percent Patchiness of Major Biological Cover
Attribute_Definition_Source:
Refer to Chapter 1: Benthic Habitat Classification Scheme of "Benthic Habitats of St. John, U.S. Virgin Islands" (Zitello et al. 2009)
Attribute_Domain_Values:
Unrepresentable_Domain: Unknown
Attribute:
Attribute_Label: P_Coral_Cv
Attribute_Definition: Percent Cover of Live Coral
Attribute_Definition_Source:
Refer to Chapter 1: Benthic Habitat Classification Scheme of "Benthic Habitats of St. John, U.S. Virgin Islands" (Zitello et al. 2009)
Attribute_Domain_Values:
Unrepresentable_Domain: Unknown
Overview_Description:
Entity_and_Attribute_Overview:
Specific details of the attributes and values therein can be found in Chapter 1: Benthic Habitat Classification Scheme of "Benthic Habitats of St. John, U.S. Virgin Islands" (Zitello et al. 2009).
Entity_and_Attribute_Detail_Citation:
Zitello, A.G., L.J. Bauer, T.A. Battista, P.W. Mueller and M.S. Kendall. 2009. Benthic Habitats of St. John, U.S. Virgin Islands. NOAA Technical Memorandum NOS NCCOS 96. 50 pp.

Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization:
National Oceanic and Atmospheric Administration (NOAA), National Ocean Service (NOS), National Centers for Coastal Ocean Science (NCCOS), Center for Coastal Monitoring and Assessment (CCMA), Biogeography Program
Contact_Address:
Address_Type: mailing and physical address
Address: 1305 East West Highway
City: Silver Spring
State_or_Province: MD
Postal_Code: 20910
Contact_Voice_Telephone: 301-713-3028 x171
Contact_Facsimile_Telephone: 301-713-4384
Contact_Electronic_Mail_Address: tim.battista@noaa.gov
Hours_of_Service: 0800 - 1700, Monday to Friday, EST
Resource_Description: Downloadable Data
Distribution_Liability:
The National Oceanic and Atmospheric Administration (NOAA) National Centers for Coastal Ocean Science (NCCOS) is publishing this data on their website. NCCOS Biogeography Branch does not guarantee the accuracy of the geographic features or attributes. Please see the written report and metadata records for each data set for complete information on the source, limitations, and proper use.
Custom_Order_Process: Contact NOAA for distribution options (see Distributor).

Metadata_Reference_Information:
Metadata_Date: 20121220
Metadata_Review_Date: 20100315
Metadata_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization:
National Oceanic and Atmospheric Administration (NOAA), National Ocean Service (NOS), National Centers for Coastal Ocean Science (NCCOS), Center for Coastal Monitoring and Assessment (CCMA), Biogeography Branch
Contact_Position: Primary Map Creator
Contact_Address:
Address_Type: mailing and physical address
Address: 1305 East West Highway
City: Silver Spring
State_or_Province: MD
Postal_Code: 20910
Contact_Voice_Telephone: 301-713-3028
Contact_Facsimile_Telephone: 301-713-4384
Hours_of_Service: 0800 - 1700, Monday to Friday, EST
Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
Metadata_Time_Convention: Local Time

CoRIS:
CoRIS_ID: 20100315011406
CoRIS_Children: None
CoRIS_Beginning_Date: 20090209
CoRIS_Ending_Date: 20090220
CoRIS_Metadata_Link:
<http://www.coris.noaa.gov/metadata/records/html/metadata_aa_data_shallowater_sites.html>
CoRIS_Tracking_ID: 4508

Generated by mp version 2.9.13 on Wed Apr 23 10:39:27 2014