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: 200606
Title: CRED Optical Validation Data at French Frigate Shoals, 2005, 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/
Description:
Abstract: Optical validation data were collected using a Tethered Optical Assessment Device (TOAD), an underwater sled
equipped with an underwater digital video camera and lights. Data were collected at French Frigate Shoals in the
Northwestern Hawaiian Islands to support Benthic Habitat Mapping efforts.
Purpose: This data provides optical observations that will be correlated with bathymetry and acoustic backscatter imagery
to develop a benthic habitat map of French Frigate Shoals. Refer to supplemental information for description of
instrument and survey.
Supplemental_Information: French Frigate Shoals is a large open atoll located at 23.75N, 166.2W. The underlying basalt
structure is estimated to be 13.8 million years old. Tern Island is the largest island at FFS and was enlarged by the
U.S. Navy just prior to World War II; numerous other small islets exist. The total land mass is only 0.23 sq. km but
the large reef and adjacent banks include 733 sq. km of coral habitat at depths of less than 100 m.
Optical validation data were collected using the Tethered Optical Assessment Device (TOAD), a sled equipped with
underwater video camera and lights. These data are used to provide ground-truth validation for benthic habitat maps
based on multibeam echosounder surveys. Camera sled deployments were conducted at night, usually between 1800 and
midnight. The duration of each tow varied but averaged about 40 minutes of bottom time at a given location. The camera
sled was deployed from lower arm of the starboard J-frame on the NOAA Ship Hi'ialakai. At each station the ship was
positioned with the wind on the starboard side and drifted downwind; occasional light turns were applied to the
ship's screws if necessary to reduce the ship's motion. The TOAD was lowered slowly to the bottom by the deck crew.
The operator monitored a live video feed from the camera and began recording data on two video tape recorders. When
the camera reached bottom the deck crew was notified by radio to stop lowering. The operator continued to monitor
the vehicle and provided commands to raise or lower it to keep the camera just above the bottom.
Equipment Description: The TOAD was deployed from the lower arm of the vessel's J-frame. The TOAD is a camera sled
based on the Guildline MiniBat model 8820 tow body. The frame has been extensively modified from its original
configuration and was equipped with an ROS model 54-00100-13 color underwater video camera as the primary data
collection instrument. The ROS camera was mounted to point at approximately a 45 degree angle toward the seafloor. A
Deep Sea Power and Light model 2050 MultiSeaCam low-light color video camera was also mounted on the sled and aimed
straight ahead. The signal from this camera was fed to a second video monitor to provide warning of underwater
obstructions the sled might be headed for. Illumination was provided by two 500 W DeepSea Power & Light Multi-SeaLite
model 1050 underwater lights mounted on the original sled frame. The lights were located near the base and each side
of the sled to provide the maximum possible horizontal distance from the ROS camera. An ORE Offshore model 4330B
Multibeacon was attached to the sled to provide a response to acoustic interrogations sent by the Hi'ialakai's Model
4410D-01 Trackpoint II Plus Ultrashort Baseline acoustic tracking system. Cable between the sled and the surface
consisted of a underwater electrical cable (cable 1, blue in color) with a separate load-bearing line to support the
sled frame. The electrical cable was clipped to the line at regular intervals upon deployment and removed upon
recovery. The load-bearing line was led to the starboard capstan on the aft deck. All TOAD surface components were
located in the Dry Lab in an equipment rack on the after bulkhead.
Name & address of person collecting data:
Joyce Miller
NOAA IRC
NMFS/PIFSC/CRED
1845 WASP Blvd., Building 176
Honolulu, HI 96818
Data Files: Video data were recorded on two video tape recorders. The position of the camera sled was recorded using
Hypack Max version 02.012a survey software.
File naming convention: Each tow is given a name consisting of a 3-letter designator for the island area followed by
a two-digit year and three-digit tow number. For example, during HI0503 the first tow was called FFS05000. Video
tape labels and paper log forms are all annotated with the tow name. Data files recorded in Hypack software followed
their CHS filename format consisting of the year, the first two letters of the platform name, the Julian date, and
the hour and minute in which the file was started. For example, a file collected on July 18, 2005 (Julian date 199)
aboard the Hi'ialakai starting at time 1935 would be 2005HI1991935.
Time Correlation: All times are based on UTC. Four clocks were manually synchronized prior to starting data
collection; the clock in the video character generator that was used to annotate the video tape, in one of the video
cassette recorders, in the Trackpoint II system, and in the computer running the Hypack Max software. These clocks
were set to UTC at the beginning of each evening's operations.
Resource Description: Digital video images that are geo-referenced to navigation files.
Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 20050629
Currentness_Reference: ground condition
Status:
Progress: Complete
Maintenance_and_Update_Frequency: None Planned
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -166.37278
East_Bounding_Coordinate: -166.29838
North_Bounding_Coordinate: 23.78695
South_Bounding_Coordinate: 23.70212
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_Keyword: EARTH SCIENCE > Biosphere > Zoology > Corals > Reef Monitoring and Assessment > Photographic Analysis > Videography
Theme:
Theme_Keyword_Thesaurus: None
Theme_Keyword: Tethered Optical Assessment Device (TOAD)
Theme_Keyword: Underwater video
Theme_Keyword: HI0503
Theme:
Theme_Keyword_Thesaurus: CoRIS Discovery Thesaurus
Theme_Keyword: Visual Images > Habitats
Theme:
Theme_Keyword_Thesaurus: ISO 19115 Topic Category
Theme_Keyword: environment
Theme_Keyword: biota
Place:
Place_Keyword_Thesaurus: CoRIS Place Thesaurus
Place_Keyword: OCEAN BASIN > Pacific Ocean > Central Pacific Ocean > Northwestern Hawaiian Islands > French Frigate Shoals (24N166W0001)
Place_Keyword: COUNTRY/TERRITORY > United States of America > Hawaii > Honolulu > French Frigate Shoals (24N166W0001)
Place_Keyword: OCEAN BASIN > Pacific Ocean > Central Pacific Ocean > Northwestern Hawaiian Islands (28N178W0000)
Place_Keyword: COUNTRY/TERRITORY > United States of America > Hawaii > Honolulu > Northwestern Hawaiian Islands (28N178W0000)
Place:
Place_Keyword_Thesaurus: CoRIS Region
Place_Keyword: NWHI
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
Browse_Graphic:
Browse_Graphic_File_Name: https://www.ncei.noaa.gov/data/oceans/coris/data/NOAA/nmfs/pifsc/cred/TOADbrowse/TOAD_FFS_92dpi.jpg
Browse_Graphic_File_Description: French Frigate Shoals, NWHI: TOAD Tows and Multibeam Bathymetry
Browse_Graphic_File_Type: JPEG
Data_Set_Credit: Benthic Habitat Mapping Group, 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 position accuracy for the camera sled position is estimated at
plus or minus 60 meters. There are two primary sources of this error. The ship's positioning is based on GPS SPS,
often called standalone or non-differential GPS positioning. SPS has a measured accuracy of under 5 meters. The
position of the GPS antenna is referenced to the ship's granite block. The second and larger primary source of error
is uncertainty associated with the sled's position as reported by the Trackpoint II acoustic tracking system, which
is also referenced to the granite block.
Lineage:
Process_Step:
Process_Description: After a tow was completed the video tape data was reviewed by spot-checking the master and backup
tape to verify that data were recorded.
Raw data files recorded using Hypack Max software include time, horizontal position, and ship's heading information
were copied from the acquisition computer to the data archive.
Tow-specific metadata were recorded in the data archive in the same location as the raw data, in a spreadsheet that
was then referred to in creating metadata records of each island where data were collected during the cruise. Raw
data files were exported as comma-delimited text files which were then imported into ArcGIS v8.3 and saved as shapefiles.
Process_Date: 20050523
Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Geographic:
Latitude_Resolution: 0.0001
Longitude_Resolution: 0.0001
Geographic_Coordinate_Units: Decimal Degrees
Geodetic_Model:
Horizontal_Datum_Name: D_WGS_1984
Ellipsoid_Name: WGS_1984
Semi-major_Axis: 6378137.000000
Denominator_of_Flattening_Ratio: 298.257224
Vertical_Coordinate_System_Definition:
Depth_System_Definition:
Depth_Datum_Name: No correction
Depth_Resolution: 0.1
Depth_Distance_Units: meters
Depth_Encoding_Method: Attribute Values
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: ASCII
Format_Information_Content: Each comma-delimited record contains information on the UTC date and time, horizontal
position of the sled, and heading of the ship over the period of time that the camera sled is in the water.
List of navigation files:
2005HI1370930.raw
2005HI1371042.raw
2005HI1371127.raw
2005HI1371249.raw
2005HI 1371413.raw
2005HI 1390700.raw
2005HI 1390809.raw
2005HI 1390907.raw
2005HI 1391009.raw
2005HI 1560523.raw
2005HI 1560615.raw
Digital_Transfer_Option:
Offline_Option:
Offline_Media: CD-ROM
Recording_Format: ISO 9660
Digital_Form:
Digital_Transfer_Information:
Format_Name: mini digital video
Format_Information_Content: List of Video tapes:
FFS05000-001, Mini DV, Master and Backup
FFS05002, Mini DV, Master and Backup
FFS05003, Mini DV, Master and Backup
FFS05004, Mini DV, Master and Backup
FFS05005, Mini DV, Master and Backup
FFS05006, Mini DV, Master and Backup
FFS05007, Mini DV, Master and Backup
FFS05008, Mini DV, Master and Backup
FFS05009-010,Mini DV, Master and Backup
Digital_Transfer_Option:
Offline_Option:
Offline_Media: Video casette tape
Recording_Format: Mini DV
Fees: None
Metadata_Reference_Information:
Metadata_Date: 20200329
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 Standard for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
CoRIS:
CoRIS_ID: 20080502065557
CoRIS_Children: None
CoRIS_Beginning_Date: 20050629
CoRIS_Ending_Date: 20050629
CoRIS_Metadata_Link: https://www.coris.noaa.gov/metadata/records/html/cred_toad_french_frigate_shoals_hi0503_2005.html
CoRIS_Tracking_ID: 1472