CRED Optical Validation Data in the Auau Channel, Hawaii, 2007, to Support Benthic Habitat Mapping
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Metadata:
- Identification_Information:
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- Citation:
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- Citation_Information:
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- Originator:
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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:
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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:
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http://www.soest.hawaii.edu/pibhmc/cms/data-by-location/main-hawaiian-islands/maui/optical/
- Description:
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- Abstract:
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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:
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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:
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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:
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- Time_Period_Information:
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- Range_of_Dates/Times:
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- Beginning_Date: 20071207
- Ending_Date: 20071209
- Currentness_Reference: ground condition
- Status:
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- Progress: Complete
- Maintenance_and_Update_Frequency: None planned
- Spatial_Domain:
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- Bounding_Coordinates:
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- West_Bounding_Coordinate: -156.8243
- East_Bounding_Coordinate: -156.6797
- North_Bounding_Coordinate: 20.9371
- South_Bounding_Coordinate: 20.7766
- Keywords:
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- Theme:
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- Theme_Keyword_Thesaurus: NCEI Geoportal Filter
- Theme_Keyword: CoRIS_Metadata
- Theme:
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- Theme_Keyword_Thesaurus: CRCP Project
- Theme_Keyword:
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Benthic Habitat Mapping and Characterization - Northwestern and Main Hawaiian Islands
- Theme_Keyword: 1217
- Theme:
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- Theme_Keyword_Thesaurus: CoRIS Theme Thesaurus
- Theme_Keyword: EARTH SCIENCE > Biosphere > Aquatic Habitat > Benthic Habitat
- Theme_Keyword:
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EARTH SCIENCE > Biosphere > Zoology > Corals > Reef monitoring and assessment > Mapping
- Theme:
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- Theme_Keyword_Thesaurus: CoRIS Discovery Thesaurus
- Theme_Keyword: Geographic Information > Habitats
- Theme:
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- Theme_Keyword_Thesaurus: ISO 19115 Topic Category
- Theme_Keyword: imageryBaseMapsEarthCover
- Theme_Keyword: 010
- Theme:
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- Theme_Keyword_Thesaurus: None
- Theme_Keyword: Synthesis Map
- Theme_Keyword: Mesophotic coral ecosystem
- Place:
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- Place_Keyword_Thesaurus: CoRIS Place Thesaurus
- Place_Keyword:
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OCEAN BASIN > Pacific Ocean > Central Pacific Ocean > Hawaiian Islands > Auau Channel > AuAu Channel (20N156W0027)
- Place_Keyword:
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COUNTRY/TERRITORY > United States of America > Hawaii > Auau Channel > AuAu Channel (20N156W0027)
- Place:
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- Place_Keyword_Thesaurus: CoRIS Region
- Place_Keyword: MHI
- Access_Constraints: None
- Use_Constraints:
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Please acknowledge the NOAA Coral Reef Ecosystem Division, Pacific Islands Fisheries Science Center as the source of this information.
- Point_of_Contact:
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- Contact_Information:
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- Contact_Organization_Primary:
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- Contact_Organization:
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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:
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- 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:
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Pacific Island Benthic Habitat Mapping Center, Coral Reef Ecosystem Division
(CRED), Pacific Islands Fisheries Science Center (PIFSC), NOAA
- Security_Information:
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- Security_Classification_System: Not applicable
- Security_Classification: Unclassified
- Security_Handling_Description: Not applicable
- Data_Quality_Information:
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- Logical_Consistency_Report: Unspecified
- Completeness_Report: Complete
- Positional_Accuracy:
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- Horizontal_Positional_Accuracy:
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- Horizontal_Positional_Accuracy_Report:
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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:
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- Process_Step:
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- Process_Description:
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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:
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- Distributor:
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- Contact_Information:
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- Contact_Organization_Primary:
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- Contact_Organization:
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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:
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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:
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- Digital_Form:
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- Digital_Transfer_Information:
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- Format_Name: DVD
- Format_Information_Content:
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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:
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- Offline_Option:
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- Offline_Media: DVD
- Recording_Format: DVD
- Fees: none
- Metadata_Reference_Information:
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- Metadata_Date: 20190605
- Metadata_Review_Date: 20101019
- Metadata_Contact:
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- Contact_Information:
-
- Contact_Organization_Primary:
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- Contact_Organization:
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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:
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- CoRIS_ID: 20101019071658
- CoRIS_Children: None
- CoRIS_Beginning_Date: 20071207
- CoRIS_Ending_Date: 20071209
- CoRIS_Metadata_Link:
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https://www.coris.noaa.gov/metadata/records/html/cred_rov_maui_kok1207_2007.html
- CoRIS_Tracking_ID: 6007
Generated by mp version 2.9.48 on Tue Jun 6 10:57:23 2023