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)
20150901
CRED Optical Validation Data collected on Hawai'i, Main Hawaiian Islands, USA, in 2015 to support Benthic Habitat Mapping
Video imagery, still imagery, track line navigation files, and log sheets
https://www.soest.hawaii.edu/pibhmc/cms/
Optical validation data were collected using a Tethered Optical Assessment Device (TOAD), an underwater sled
equipped with an underwater digital video camera, digital still camera and lights, and a drop camera system
equipped with underwater digital video camera, digital still camera and lights in the Kohala coast area of
northwest Hawai'i island. Data were collected using the camera sled deployed from the Hawai'ian Islands
Humpback Whale National Marine Sanctuary small boat the R/V Kohola during the first 8 days of survey,
while the drop camera system was used on the Nature Conservancy R/V Kaka for the final 4 days of survey during May 2015.
These data provide optical observations that have been used to provide information on the distribution of
coral communities and other benthic cover along the west coast of Hawai'i.
The island of Hawai'i is the southernmost island of the Hawai'ian archipelago. It is also the largest island with a land area of
nearly 10,500 sq km. It is the youngest island of the archipelago with ongoing volcanic activity.
Operations Description: From May 21- June 2, 2015, CRED personnel conducted towed optical surveys along the Kohala coast of Hawai'i, between Kawaihae and Mahaiula Bay.
The towed camera sled was deployed from the R/V Kohola, an 11m AMBAR vessel. Operations
were conducted during daylight hours, with seafloor imagery collected using an underwater camera sled, designed and fabricated by Deep Ocean
Engineering, Inc. (DOE) and a drop camera system with video from a Splashcam and still imagery from a GoPro. Optical data were collected with
underwater video and still cameras with lights. These data are used to provide ground-truth validation for benthic habitat
maps based on multibeam echosounder surveys and to gather additional information regarding benthic and fish communities.
Camera deployments were conducted during daylight hours, usually between 0800 and 1500. The duration of each TOAD tow varied, but averaged
about 10 minutes of bottom time per tow. The drop camera system was deployed for an average of 3 minutes per tow. Both camera systems were deployed
from the port side of the vessel. At each station the vessel was positioned with the wind on the port side and drifted downwind; occasional light
turns were applied if necessary to reduce the vessel's motion or to ensure the tethered cable was clear of the outboard engines. The TOAD sled was
lowered slowly to the bottom by a pot-hauler holding 200 m of cable, operated from a control station in the cabin of the vessel. The drop camera was
deployed by hand using 40 of cable. For both systems, the operator monitored a live video feed from the camera system and began recording video onto
media cards using a digital video recorder once the camera reached the bottom. The operator continued to monitor the video feed during the tow and
raised or lowered the sled to maintain a 2m altitude above the seafloor.
Equipment Description: TOAD Camera Sled: The TOAD sled body is constructed from a shortened Phantom ROV body with a tail piece added for stability. The
camera sled is equipped with a Deep Sea Power & Light (DSP&L) Multi SeaCam 2060 low-light color video camera, angled downwards to
provide imagery of the seabed while allowing some view of upcoming obstacles, and a downward-facing Ocean Imaging System 12000 digital
still camera (consisting of a Nikon D90 digital SLR camera within an aluminum housing). Illumination for the video camera is
provided by 50 watt DSP&L LED Multi SeaLites. Illumination for the still camera is provided by a remote flash head (Ocean Imaging Systems).
A pair of parallel DSP&L SeaLaser 100 lasers provided a scale reference in still images. The sled also has a Tritech PA200 Altimeter to detect the height
of the camera above the seafloor, a pressure (depth) sensor and a fluxgate
compass, all installed inside the sled's electronics bottle. The camera sled was attached to the control console (situated in the boat cabin) via a 130 M length (0.5" diameter)
umbilical cable, and was deployed via a pot-hauler with a
300lbs (SWL) capacity, mounted on the port deck of the vessel. A video display monitor mounted on the control console was used to
monitor the position of the sled relative to the seafloor. Video data were recorded to digital files using a digital video recorder
mounted on the control console. A serial cable was connected to a Garmin GPS, to provide position of the vessel. Hypack hydrographic
software (version 2014) was used to record position data (from GPS) and time. The length of umbilical cable in the water was manually
entered into Hypack, this in conjunction with the camera sled depth and vessel position was used to calculate
layback and determine the latitude and longitude of the sled. The calculated position is then recorded in Hypack. Drop Camera: The drop camera
consisted of a Deep Blue Pro Marine video Splashcam angled downwards to provide imagery of the seabed while allowing some view of upcoming
obstacles and a downward-facing GoPro Hero 3+ still camera inside an extreme depth underwater housing. Illumination for the still camera was
provided by two LED underwater lights. A pair of parallel lasers proveded a scale reference in still images. The drop camera was attached to a
small monitor screen on deck via a 40 M length umbilical cable and was deployed by hand from the port deck of the vessel. A video display monitor
was used to monitor the position of the sled reletive to the seafloor. Video data were recorded to digital files using a digital video recorder on
deck. Still imagery was collected at 10 second intervals and recorded on an internal microSD card. A hand held Garmin 76Cx GPS unit was used to
record the position of the vessel. Vessel movement was kept to a minimum to maintain a vertical angle on the umbilical cable.
Data Files: Video data were recorded on media cards using a digital video recorder and later copied to external hard drive digital files. Still
imagery were recorded onto media cards and copied to external hard drive digital files. The position of the TOAD camera sled was recorded using
Hypack 2014 hydrogrpahic software. Position of the drop camera was recorded using the vessel track file from the Handheld Garmin GPS unit.
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. During cruise SB1505 the tows were named HAW15103 to HAW15266. Digital videos, still images and paper log forms
are annotated with the associated tow name. Data recorded using Hypack software are of the format 2015KOHHMMSS where HHMMSS is UTC time.
Time Correlation: All times are based on UTC. Clocks were manually synchronized prior to starting data collection each day of operations.
Resource Description: Digital video imagery that is geo-referenced to navigation files.
20150521
20150602
ground condition
None planned
-156.160033
-155.824607
20.083193
19.772209
NCEI Geoportal FilterCoRIS_MetadataCRCP ProjectBenthic Habitat Mapping and Characterization - Northwestern and Main Hawaiian Islands1217
CoRIS Theme Thesaurus
EARTH SCIENCE > Biosphere > Aquatic Habitat > Benthic Habitat
EARTH SCIENCE > Biosphere > Zoology > Corals > Reef monitoring and assessment > Mapping
EARTH SCIENCE > Biosphere > Zoology > Corals > Reef monitoring and assessment > Photographic analysis > Videography
ISO 19115 Topic Category
environment
007
CoRIS Discovery Thesaurus
Visual Images > Habitats
CoRIS Place Thesaurus
COUNTRY/TERRITORY > United States of America > Hawaii > Hawaii > Hawaii Island (19N155W0003)
OCEAN BASIN > Pacific Ocean > Central Pacific Ocean > Hawaiian Islands > Hawaii Island > Hawaii Island (19N155W0003)
COUNTRY/TERRITORY > United States of America > Hawaii > Hawaii > Kohala Coast (21N155W0001)
OCEAN BASIN > Pacific Ocean > Central Pacific Ocean > Hawaiian Islands > Hawaii > Kohala Coast (21N155W0001)
OCEAN BASIN > Pacific Ocean > Central Pacific Ocean > Hawaiian Islands > Hawaii > Puako (19N155W0001)
COUNTRY/TERRITORY > United States of America > Hawaii > Hawaii > Puako (19N155W0001)
OCEAN BASIN > Pacific Ocean > Central Pacific Ocean > Hawaiian Islands > Hawaii Island > Hawaii Island (19N155W0003)
None
Please acknowledge the NOAA Coral Reef Ecosystem Division, Pacific Islands Fisheries Science Center as the source of
this information.
Pacific Islands Benthic Habitat Mapping Center (PIBHMC), Coral Reef Ecosystem Division (CRED),
Pacific Islands Fisheries Science Center (PIFSC), NOAA National Marine Fisheries Service (NMFS)
mailing and physical
1845 Wasp Blvd., Bldg. 176
Honolulu
HI
96818
USA
808-725-5438
pibhmc@soest.hawaii.edu
e-mail preferred
Ecospatial Information Group, Coral Reef Ecosystem Division (CRED), Pacific Islands Fisheries Science Center (PIFSC), NOAA
Unspecified
Complete
The horizontal position accuracy for the camera sled position is estimated at 40 meters.
There are two primary sources of this error. The vessel positioning is estimated at 25 m horizontal accuracy, and as vessel position
was used for camera sled position (with measured offsets between the vessel point of origin and the pothauler applied), an additional
inaccuracy comes from the distance of the camera sled from the horizontal position of the vessel.
After a tow was completed the video was reviewed by opening the video file
to verify that data were recorded. Raw data files recorded using Hypack 2014 software that include time and vessel position,
were copied from the acquisition computer to the data archive. Tow-specific metadata were recorded in a custom database. Raw Hypack data files
were exported as comma-delimited text files which were then modified in Excel so that additional information could be added, before being
imported into ArcGISv10.1 and saved as shapefiles. Additional depth data was extracted from underlying bathymetry
using "Extract values to points" tool available in ArcGIS. The dbf of the shapefile was then imported into the TOAD database,
which is a custom-built Access 2007 database. The benthic habitat for each tow was classified using the PIBHMC_tow classification
scheme. Ten points were classified at 30 second intervals and codes were input directly into the TOAD database. The classified
results were then exported as an excel spreadsheet and imported into ArcGIS v10.1, then saved as a shapefile.
For more information on classificiation methods, refer to the PIBHMC website
ftp://ftp.soest.hawaii.edu/pibhmc/website/webdocs/documentation/Optical-Proc_Overview.pdf
For more information on the classification scheme,refer to the PIBHMC website
ftp://ftp.soest.hawaii.edu/pibhmc/website/webdocs/documentation/Benth-Habitat-Class_Codes.htm
20150702
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)
mailing and physical address
NOAA IRC
NMFS/PIFSC/CRED
1845 Wasp Blvd., Bldg. 176
Honolulu
Hawaii
96818
USA
808 725-5360
pibhmc@soest.hawaii.edu
Offline Data
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.
ASCII
Each comma-delimited record contains information on the UTC date and time, horizontal
position of the sled, and heading of the vessel over the period of time that the camera sled is in the water.
List of navigation files:
2015KO1422322.RAW
2015KO1422352.RAW
2015KO1430000.RAW
2015KO1430019.RAW
2015KO1430045.RAW
2015KO1432048.RAW
2015KO1432124.RAW
2015KO1432213.RAW
2015KO1432241.RAW
2015KO1432315.RAW
2015KO1432357.RAW
2015KO1440000.RAW
2015KO1440024.RAW
2015KO1440048.RAW
2015KO1440120.RAW
2015KO1441829.RAW
2015KO1441859.RAW
2015KO1441920.RAW
2015KO1441948.RAW
2015KO1442012.RAW
2015KO1442039.RAW
2015KO1442101.RAW
2015KO1442227.RAW
2015KO1442246.RAW
2015KO1442306.RAW
2015KO1442332.RAW
2015KO1442349.RAW
2015KO1450000.RAW
2015KO1450031.RAW
2015KO1451933.RAW
2015KO1452001.RAW
2015KO1452033.RAW
2015KO1452056.RAW
2015KO1452116.RAW
2015KO1452142.RAW
2015KO1452204.RAW
2015KO1452232.RAW
2015KO1452255.RAW
2015KO1452315.RAW
2015KO1452330.RAW
2015KO1452357.RAW
2015KO1460000.RAW
2015KO1460012.RAW
2015KO1460031.RAW
2015KO1461850.RAW
2015KO1461913.RAW
2015KO1461934.RAW
2015KO1462000.RAW
2015KO1462023.RAW
2015KO1462049.RAW
2015KO1462113.RAW
2015KO1462139.RAW
2015KO1462155.RAW
2015KO1462217.RAW
2015KO1462239.RAW
2015KO1462303.RAW
2015KO1462327.RAW
2015KO1471754.RAW
2015KO1471820.RAW
2015KO1471849.RAW
2015KO1471913.RAW
2015KO1471931.RAW
2015KO1471953.RAW
2015KO1472010.RAW
2015KO1472039.RAW
2015KO1472056.RAW
2015KO1472136.RAW
2015KO1472205.RAW
2015KO1472228.RAW
2015KO1472248.RAW
2015KO1472310.RAW
2015KO1472335.RAW
2015KO1481827.RAW
2015KO1481846.RAW
2015KO1481902.RAW
2015KO1481928.RAW
2015KO1481954.RAW
2015KO1482035.RAW
2015KO1482109.RAW
2015KO1482135.RAW
CD-ROM
ISO 9660
digital video .AVI file and DVD, digital still .JPG file and CD
16.5 h of video data are available covering 266 square km of seabed, recorded as 164 digital video clips.
List of video tapes (masters on digital hard drive, and backups on DVD)
HAW15170.AVI
HAW15171.AVI
HAW15172.AVI
HAW15173.AVI
HAW15174.AVI
HAW15175.AVI
HAW15176.AVI
HAW15177.AVI
HAW15178.AVI
HAW15178B.AVI
HAW15179.AVI
HAW15180.AVI
HAW15181.AVI
HAW15182.AVI
HAW15183.AVI
HAW15184.AVI
HAW15185.AVI
HAW15186.AVI
HAW15187.AVI
HAW15188.AVI
HAW15189.AVI
HAW15190.AVI
HAW15191.AVI
HAW15191B.AVI
HAW15192.AVI
HAW15193.AVI
HAW15194.AVI
HAW15195.AVI
HAW15196.AVI
HAW15197.AVI
HAW15198.AVI
HAW15199.AVI
HAW15200.AVI
HAW15201.AVI
HAW15202.AVI
HAW15203.AVI
HAW15204.AVI
HAW15204b.AVI
HAW15205.AVI
HAW15206.AVI
HAW15207.AVI
HAW15208.AVI
HAW15209.AVI
HAW15210.AVI
HAW15211.AVI
HAW15212.AVI
HAW15213.AVI
HAW15214.AVI
HAW15215.AVI
HAW15216.AVI
HAW15217.AVI
HAW15218.AVI
HAW15220.AVI
HAW15221.AVI
HAW15222.AVI
HAW15223.AVI
HAW15224.AVI
HAW15225.AVI
HAW15226.AVI
HAW15227.AVI
HAW15228.AVI
HAW15229.AVI
HAW15230.AVI
HAW15231.AVI
HAW15232.AVI
HAW15233.AVI
HAW15234.AVI
HAW15235.AVI
HAW15236.AVI
HAW15237.AVI
HAW15238.AVI
HAW15239.AVI
HAW15240.AVI
HAW15241.AVI
HAW15242.AVI
HAW15243.AVI
HAW15244.AVI
HAW15245.AVI
HAW15246.AVI
HAW15247.AVI
HAW15247B.AVI
HAW15248.AVI
HAW15249.AVI
HAW15250.AVI
HAW15251.AVI
HAW15252.AVI
HAW15253.AVI
HAW15254.AVI
HAW15255.AVI
HAW15256.AVI
HAW15257.AVI
HAW15258.AVI
HAW15259.AVI
HAW15260.AVI
HAW15261.AVI
HAW15262.AVI
HAW15263.AVI
HAW15264.AVI
HAW15265.AVI
HAW15266.AVI
Digital video .AVI file
DVR
None
20200708
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)
mailing and physical address
NOAA IRC
NMFS/PIFSC/CRED
1845 WASP Blvd., Building 176
Honlulu
Hawaii
96818
USA
808 725-5360
808 725-5429
nmfs.pic.credinfo@noaa.gov
e-mail preferred
FGDC Content Standards for Digital Geospatial Metadata
FGDC-STD-001-1998
universal time
None
None
https://www.coris.noaa.gov/metadata/records/html/cred_toad_hawaii_sb1505_2015.html
7515