CRED Optical Validation Data in the Auau Channel, Hawaii, 2007, to Support Benthic Habitat Mapping

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Metadata:


Identification_Information:
Citation:
Citation_Information:
Originator:
Pacific Islands Benthic Habitat Mapping Center (PIBHMC), Coral Reef Ecosystem Division (CRED), Pacific Islands Fisheries Science Center (PIFSC), National Marine Fisheries Service (NMFS), National Oceanic and Atmospheric Administration (NOAA)
Publication_Date: 20100801
Title:
CRED Optical Validation Data in the Auau Channel, Hawaii, 2007, to Support Benthic Habitat Mapping
Geospatial_Data_Presentation_Form: Video imagery, track line navigation files, and log sheets
Online_Linkage: <http://www.soest.hawaii.edu/pibhmc/>
Online_Linkage: <http://www.soest.hawaii.edu/pibhmc/pibhmc_mhi_mai_optical.htm>
Description:
Abstract:
Optical validation data were collected using a RCV-150 remotely operated vehicle (ROV) operated by the Hawaii Undersea Research Laboratory (HURL). Data were collected in the Auau Channel, Main Hawaiian Islands, to support benthic habitat mapping efforts during the HURL Ship R/V Ka'imikai-o-Kanaloa cruise in December 2007.
Purpose:
These data provide optical observations that will be used to provide information on the location and distribution of mesophotic coral ecosystem communities between approximately 40 and 150 m depths. Refer to supplemental information for description of instrument and survey.
Supplemental_Information:
The waters of the Auau Channel, located between and protected by the islands of Maui, Lanai, Molokai and Kahoolawe to the east, west, north, and south respectively, are bounded by the latitudes 20.983 and 20.733 and the longitudes -156.633 and -156.858. Topography of the channel consists of solution basins and rims (ridges), sediment plains and reef pinnacles on the channel floor, which were subaerially exposed during late Quaternary lowstands of sea level. Holocene reef growth occurs as a thin veneer on topographic highs in the Channel. The Channel reaches depths of 140 m, however, the majority of the seafloor is between 55 m and 100 m deep. The Auau Channel has been documented to include abundant coral reefs at these depths, which, along with algae and other organisms found there,collectively form mesophotic coral ecosystems. Optical validation data were collected using HURL's RCV-150 remotely operated vehicle (ROV), deployed during nighttime hours usually between 1900 and 2300 (Hawaii time). The duration of each dive varied ranging from 53 m to 3 h 36 m, averaging about 1 h 50 minutes. Equipment description: The RCV-150 system consists of a remotely operated vehicle with a color analog video camera, two parallel lasers for scale, and six 250 W lamps. This was deployed from the HURL ship, R/V Ka'imikai-o-Kanaloa. A heavy cage was deployed off the ship's J-frame to whic the ROV was tethered, using a dedicated winch. The ROV operators maintain the ROV, or at least the glow from its lights, within sight of a downward-looking video camera on the cage. This keeps the horizontal distance between the ROV and the cage within 15 m for most deployments. Lighting mounted on the base of the cage provided additional illumination to the ROV. Name & address of person collecting data: John Rooney NOAA IRC NMFS/PIFSC/CRED 1845 WASP Blvd., Building 176 Honolulu, HI 96818 Data Files: Video data were recorded onto digital video media and transcribed on to DVD.
Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 20071207
Ending_Date: 20071209
Currentness_Reference: ground condition
Status:
Progress: Complete
Maintenance_and_Update_Frequency: None planned
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -156.8243
East_Bounding_Coordinate: -156.6797
North_Bounding_Coordinate: 20.9371
South_Bounding_Coordinate: 20.7766
Keywords:
Theme:
Theme_Keyword_Thesaurus: CoRIS Theme Thesaurus
Theme_Keyword: EARTH SCIENCE > Biosphere > Aquatic Habitat > Benthic Habitat
Theme_Keyword:
EARTH SCIENCE > Biosphere > Zoology > Corals > Reef monitoring and assessment > Mapping
Theme:
Theme_Keyword_Thesaurus: CoRIS Discovery Thesaurus
Theme_Keyword: Geographic Information > Habitats
Theme:
Theme_Keyword_Thesaurus: ISO 19115 Topic Category
Theme_Keyword: imageryBaseMapsEarthCover
Theme_Keyword: 010
Theme:
Theme_Keyword_Thesaurus: None
Theme_Keyword: Synthesis Map
Theme_Keyword: Mesophotic coral ecosystem
Place:
Place_Keyword_Thesaurus: CoRIS Place Thesaurus
Place_Keyword:
OCEAN BASIN > Pacific Ocean > Central Pacific Ocean > Hawaiian Islands > Auau Channel > AuAu Channel (20N156W0027)
Place_Keyword:
COUNTRY/TERRITORY > United States of America > Hawaii > Auau Channel > AuAu Channel (20N156W0027)
Place:
Place_Keyword_Thesaurus: CoRIS Region
Place_Keyword: MHI
Access_Constraints: None
Use_Constraints:
Please acknowledge the NOAA Coral Reef Ecosystem Division, Pacific Islands Fisheries Science Center as the source of this information.
Point_of_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization:
Pacific Islands Benthic Habitat Mapping Center (PIBHMC), Coral Reef Ecosystem Division (CRED), Pacific Islands Fisheries Science Center (PIFSC), National Marine Fisheries Service (NMFS), National Oceanic and Atmospheric Administration (NOAA)
Contact_Person: John Rooney
Contact_Address:
Address_Type: mailing and physical address
Address: NOAA IRC
Address: NMFS/PIFSC/CRED
Address: 1845 WASP Blvd., Building 176
City: Honolulu
State_or_Province: HI
Postal_Code: 96818
Contact_Voice_Telephone: 808 725-5360
Contact_Facsimile_Telephone: 808 725-5429
Contact_Electronic_Mail_Address: nmfs.pic.credinfo@noaa.gov
Contact_Instructions: e-mail preferred
Data_Set_Credit:
Pacific Island Benthic Habitat Mapping Center, Coral Reef Ecosystem Division (CRED), Pacific Islands Fisheries Science Center (PIFSC), NOAA
Security_Information:
Security_Classification_System: Not applicable
Security_Classification: Unclassified
Security_Handling_Description: Not applicable

Data_Quality_Information:
Logical_Consistency_Report: Unspecified
Completeness_Report: Complete
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report:
The horizontal positional accuracy for the ROV at each waypoint is estimated at plus or minus 30 meters. There are two primary sources of this error. The ship's positioning is based on non-differential GPS positioning, which has an accuracy of under 5 meters. The second and and larger source of error is the uncertainty associated with the ROV's position relative to the ship's antenna. This includes the offset of the cage from which the ROV is deployed, relative to the ship's antenna (approximately 10 m) and the distance the ROV may be from the cage (usually < 15 m).
Lineage:
Process_Step:
Process_Description:
Following the cruise, the waypoints providing the ship's position that were recorded during the tow were entered into an Excel spreadsheet and imported into ArcGIS v 9.3. Waypoints provided positions for the ship approximately every 2-10 minutes. To obtain the approximate position of the ship between these points, an Excel macro was run which interpolated the track between these positions, assuming a constant speed of travel, providing approximate position for the ship at 30-second intervals. These positions were then re-imported into ArcGIS v 9.3 to display the interpolated track of the ship, and saved as shapefiles. These positions are used as the best indication of the position of the ROV during the tow, bearing in mind the limitations of the horizontal positional accuracy described above. Spreadsheets containing location and time data were then used to classify benthic habitat for each tow using the Pacific Coral Reef Ecosystem Benthic Habitat Mapping classification scheme. Five points were classified at 30 second intervals and codes were inputted into the spreadsheet. The spreadsheet was saved as dbase file, imported into ArcGIS v9.3, and saved as a shapefile. Percent cover of scleractinian coral was displayed in Optical Validation maps with classifications of other types of living cover and substrates contained within the attribute table of the shapefile.
Process_Date: 20080529

Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization:
Pacific Islands Benthic Habitat Mapping Center (PIBHMC), Coral Reef Ecosystem Division (CRED), Pacific Islands Fisheries Science Center (PIFSC), National Marine Fisheries Service (NMFS), National Oceanic and Atmospheric Administration (NOAA)
Contact_Person: John Rooney
Contact_Address:
Address_Type: mailing and physical address
Address: NOAA IRC
Address: NMFS/PIFSC/CRED
Address: 1845 WASP Blvd., Building 176
City: Honolulu
State_or_Province: HI
Postal_Code: 96818
Contact_Voice_Telephone: 808 725-5360
Contact_Facsimile_Telephone: 808 725-5429
Contact_Electronic_Mail_Address: nmfs.pic.credinfo@noaa.gov
Contact_Instructions: e-mail preferred
Resource_Description: Offline Data
Distribution_Liability:
These data are not to be used for navigational purposes.NOAA makes no warranty regarding these data, expressed or implied, nor does the fact of distribution constitute such a warranty. NOAA cannot assume liability for any damages caused by any errors or omissions in these data, nor as a result of the failure of these data to function on a particular system.
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Format_Name: DVD
Format_Information_Content:
9h 16m of video data are available covering 11.6 km of seabed. These data were recorded on 4 DVDs List of DVDs: R-406 R-407 R-408 R-409
Digital_Transfer_Option:
Offline_Option:
Offline_Media: DVD
Recording_Format: DVD
Fees: none

Metadata_Reference_Information:
Metadata_Date: 20140312
Metadata_Review_Date: 20101019
Metadata_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization:
Pacific Islands Benthic Habitat Mapping Center (PIBHMC), Coral Reef Ecosystem Division (CRED), Pacific Islands Fisheries Science Center (PIFSC), National Marine Fisheries Service (NMFS), National Oceanic and Atmospheric Administration (NOAA)
Contact_Person: CRED Data Management Team
Contact_Address:
Address_Type: mailing and physical address
Address: NOAA IRC
Address: NMFS/PIFSC/CRED
Address: 1845 WASP Blvd., Building 176
City: Honolulu
State_or_Province: HI
Postal_Code: 96818
Contact_Voice_Telephone: 808 725-5360
Contact_Facsimile_Telephone: 808 725-5429
Contact_Electronic_Mail_Address: nmfs.pic.credinfo@noaa.gov
Contact_Instructions: e-mail preferred
Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
Metadata_Time_Convention: Local Time
Metadata_Access_Constraints: None
Metadata_Use_Constraints: None

CoRIS:
CoRIS_ID: 20101019071658
CoRIS_Children: None
CoRIS_Beginning_Date: 20071207
CoRIS_Ending_Date: 20071209
CoRIS_Metadata_Link:
<http://www.coris.noaa.gov/metadata/records/html/cred_rov_maui_kok1207_2007.html>
CoRIS_Tracking_ID: 6007

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