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:
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: NCEI Geoportal Filter
Theme_Keyword: CoRIS_Metadata
Theme:
Theme_Keyword_Thesaurus: CRCP Project
Theme_Keyword:
Benthic Habitat Mapping and Characterization - Northwestern and Main Hawaiian Islands
Theme_Keyword: 1217
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