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: 20150901 Title: CRED Optical Validation Data collected on Maui, Main Hawaiian Islands, USA, in 2015 to support Benthic Habitat Mapping Geospatial_Data_Presentation_Form: Video imagery, still 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 Tethered Optical Assessment Device (TOAD), an underwater sled equipped with an underwater digital video camera, digital still camera and lights, along the western Maui island coastline from Honolua Bay to Mala Wharf. Data were collected using the camera sled deployed from the Hawaiian Islands Humpback Whale National Marine Sanctuary small boat the R/V Kohola during 12 days of survey during May 2015. Purpose: These data provide optical observations that have been used to provide information on the distribution of coral communities along the west coast of Maui Supplemental_Information: The Auau Channel, located between the islands of Maui and Lanai and also protected by Molokai to the north, and Kahoolawe to the south, is 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 70 m deep. The Auau Channel has been documented to include abundant coral reefs at these depths, which are also known as mesophotic coral ecosystems. Operations Description: From May 1-15, 2015, CRED personnel conducted towed image surveys along the western coast of Maui, between Honolua Bay and Mala wharf. The towed camera sled was deployed from the R/V Koholā, 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). Optical data were collected using the Tethered Optical Assessment Device (TOAD), a sled equipped 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 sled deployments were conducted during daylight hours, usually between 0800 and 1500. The duration of each tow varied, but averaged about 10 minutes of bottom time per tow. The camera sled was deployed from the port davit on the NOAA small boat R/V Koholā. 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 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 operator monitored a live video feed from the sled and began recording video onto media cards using a digital video recorder once the sled reached the bottom. The operator continued to monitor the vehicle and provided commands to raise or lower the sled to maintain a 2m altitude above the seafloor. Equipment Description: 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 provide 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 200m OR 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 is used to calculate layback and determine the latitude and longitude of the sled. The calculated position is then recorded in Hypack. 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 camera sled was recorded using Hypack 2014 hydrogrpahic 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. During cruise SB1505 the tows were named MAI15001 to MAI15102. 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. Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 20150501 Ending_Date: 20150515 Currentness_Reference: ground condition Status: Progress: Complete Maintenance_and_Update_Frequency: None planned Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -156.7512 East_Bounding_Coordinate: -156.6398 North_Bounding_Coordinate: 21.0452 South_Bounding_Coordinate: 20.8891 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_Keyword: EARTH SCIENCE > Biosphere > Zoology > Corals > Reef monitoring and assessment > Photographic analysis > Videography Theme: Theme_Keyword_Thesaurus: CoRIS Discovery Thesaurus Theme_Keyword: Visual Images > Habitats Place: Place_Keyword_Thesaurus: CoRIS Place Thesaurus Place_Keyword: COUNTRY/TERRITORY > United States of America > Hawaii > Hawaii > Maui Island (20N156W0001) Place_Keyword: COUNTRY/TERRITORY > United States of America > Hawaii > Hawaii > Kahekili (20N156W0001) Place_Keyword: COUNTRY/TERRITORY > United States of America > Hawaii > Hawaii > Kapalua (20N156W0001) 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_Address: Address_Type: mailing and physical address Address: NOAA IRC Address: NMFS/PIFSC/CRED Address: 1845 Wasp Blvd., Bldg. 176 City: Honolulu State_or_Province: Hawaii Postal_Code: 96818 Country: USA Contact_Voice_Telephone: 808 725-5360 Contact_Electronic_Mail_Address: pibhmc@soest.hawaii.edu Contact_Instructions: e-mail preferred Data_Set_Credit: Ecospatial Information Group, Coral Reef Ecosystem Division (CRED), Pacific Islands Fisheries Science Center (PIFSC), NOAA 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 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. Lineage: Process_Step: Process_Description: 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 Process_Date: 20150901 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_Address: Address_Type: mailing and physical address Address: NOAA IRC Address: NMFS/PIFSC/CRED Address: 1845 Wasp Blvd., Bldg. 176 City: Honolulu State_or_Province: Hawaii Postal_Code: 96818 Country: USA Contact_Voice_Telephone: 808 725-5360 Contact_Electronic_Mail_Address: pibhmc@soest.hawaii.edu Contact_Instructions: e-mail preferred Resource_Description: Digital video imagery that is geo-referenced to navigation files. 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 vessel over the period of time that the camera sled is in the water. List of navigation files: 2015KO1230142.RAW 2015KO1230211.RAW 2015KO1232142.RAW 2015KO1232216.RAW 2015KO1232258.RAW 2015KO1232346.RAW 2015KO1240017.RAW 2015KO1240049.RAW 2015KO1241947.RAW 2015KO1242025.RAW 2015KO1242101.RAW 2015KO1242150.RAW 2015KO1242240.RAW 2015KO1242308.RAW 2015KO1242343.RAW 2015KO1250023.RAW 2015KO1250055.RAW 2015KO1252016.RAW 2015KO1252035.RAW 2015KO1252044.RAW 2015KO1252054.RAW 2015KO1252105.RAW 2015KO1252119.RAW 2015KO1252147.RAW 2015KO1252211.RAW 2015KO1252306.RAW 2015KO1252329.RAW 2015KO1252351.RAW 2015KO1260012.RAW 2015KO1260026.RAW 2015KO1260044.RAW 2015KO1262032.RAW 2015KO1262053.RAW 2015KO1262125.RAW 2015KO1262230.RAW 2015KO1262340.RAW 2015KO1270028.RAW 2015KO1270045.RAW 2015KO1271932.RAW 2015KO1271954.RAW 2015KO1272015.RAW 2015KO1272035.RAW 2015KO1272106.RAW 2015KO1272127.RAW 2015KO1272149.RAW 2015KO1281934.RAW 2015KO1282013.RAW 2015KO1282053.RAW 2015KO1282136.RAW 2015KO1282200.RAW 2015KO1282220.RAW 2015KO1282315.RAW 2015KO1282335.RAW 2015KO1290000.RAW 2015KO1290113.RAW 2015KO1291833.RAW 2015KO1291853.RAW 2015KO1291952.RAW 2015KO1292012.RAW 2015KO1292047.RAW 2015KO1292122.RAW 2015KO1300020.RAW 2015KO1300056.RAW 2015KO1300020.RAW 2015KO1300056.RAW 2015KO1301925.RAW 2015KO1302044.RAW 2015KO1312155.RAW 2015KO1312212.RAW 2015KO1312233.RAW 2015KO1312345.RAW 2015KO1320011.RAW 2015KO1320025.RAW 2015KO1320039.RAW 2015KO1321926.RAW 2015KO1321950.RAW 2015KO1322007.RAW 2015KO1322023.RAW 2015KO1322041.RAW 2015KO1322103.RAW 2015KO1322118.RAW 2015KO1322225.RAW 2015KO1322242.RAW 2015KO1322335.RAW 2015KO1322355.RAW 2015KO1331834.RAW 2015KO1331912.RAW 2015KO1331925.RAW 2015KO1331944.RAW 2015KO1332003.RAW 2015KO1332029.RAW 2015KO1332046.RAW 2015KO1332104.RAW 2015KO1332129.RAW 2015KO1332144.RAW 2015KO1332216.RAW 2015KO1332236.RAW 2015KO1332306.RAW 2015KO1332330.RAW 2015KO1332335.RAW 2015KO1340008.RAW 2015KO1340030.RAW Digital_Transfer_Option: Offline_Option: Offline_Media: CD-ROM Recording_Format: ISO 9660 Digital_Form: Digital_Transfer_Information: Format_Name: digital video .AVI file and DVD, digital still .JPG file and CD Format_Information_Content: 17 h of video data are available covering 51 km of seabed, recorded as 102 digital video clips. List of video tapes (masters on mini DV, and backups on DVD) MAI15001.AVI MAI15002.AVI MAI15003.AVI MAI15004.AVI MAI15005.AVI MAI15006.AVI MAI15007.AVI MAI15008.AVI MAI15009.AVI MAI15010.AVI MAI15011.AVI MAI15012.AVI MAI15013.AVI MAI15014.AVI MAI15015.AVI MAI15016.AVI MAI15017.AVI MAI15018.AVI MAI15019.AVI MAI15020.AVI MAI15021.AVI MAI15023.AVI MAI15024.AVI MAI15025.AVI MAI15026.AVI MAI15027.AVI MAI15028.AVI MAI15029.AVI MAI15030.AVI MAI15031.AVI MAI15032.AVI MAI15033.AVI MAI15034.AVI MAI15035.AVI MAI15036.AVI MAI15037.AVI MAI15038.AVI MAI15039.AVI MAI15040.AVI MAI15041.AVI MAI15042.AVI MAI15043.AVI MAI15044.AVI MAI15045.AVI MAI15046.AVI MAI15047.AVI MAI15048.AVI MAI15049.AVI MAI15050.AVI MAI15051.AVI MAI15052.AVI MAI15053.AVI MAI15054.AVI MAI15055.AVI MAI15056.AVI MAI15057_VideoNotTaken MAI15058.AVI MAI15059.AVI MAI15060.AVI MAI15061.AVI MAI15062.AVI MAI15063.AVI MAI15064_VideoNotTaken MAI15065.AVI MAI15066.AVI MAI15067_VideoNotTaken MAI15068.AVI MAI15069.AVI MAI15070.AVI MAI15071.AVI MAI15072.AVI MAI15073.AVI MAI15074.AVI MAI15075.AVI MAI15076.AVI MAI15077.AVI MAI15078.AVI MAI15079.AVI MAI15080.AVI MAI15081.AVI MAI15082.AVI MAI15083.AVI MAI15084.AVI MAI15085.AVI MAI15086.AVI MAI15087.AVI MAI15088.AVI MAI15089.AVI MAI15090.AVI MAI15091.AVI MAI15092.AVI MAI15093.AVI MAI15093B.AVI MAI15094.AVI MAI15095.AVI MAI15096.AVI MAI15097.AVI MAI15098.AVI MAI15099.AVI MAI15100.AVI MAI15101.AVI MAI15102.AVI Digital_Transfer_Option: Offline_Option: Offline_Media: Digital video .AVI file Recording_Format: DVR Fees: None Metadata_Reference_Information: Metadata_Date: 20150518 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_Address: Address_Type: mailing and physical address Address: NOAA IRC Address: NMFS/PIFSC/CRED Address: 1845 WASP Blvd., Building 176 City: Honlulu State_or_Province: Hawaii Postal_Code: 96818 Country: USA 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: Universal Time Metadata_Access_Constraints: None Metadata_Use_Constraints: None