Optical Validation
Project (PRJ) | Pacific Islands Fisheries Science Center (PIFSC)GUID: gov.noaa.nmfs.inport:12596 | Updated: October 20, 2022 | Published / External
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Summary
Except for very small areas, it is not logistically feasible to optically image more than a small fraction of the seafloor deeper than about 30 m within a coral reef ecosystem using any technology currently available. Accordingly, optical imagery of the seafloor is collected primarily to ground truth or validate the interpretation of benthic habitat characteristics from bathymetry, backscatter imagery, or other data. To date, optical data have been collected using two different types of systems. In shallow waters, at depths between a few meters and 20?30 m, towboard divers with the NOAA Pacific Islands Fisheries Science Center?s Coral Reef Ecosystem Division (CRED) collect video or still imagery while being towed behind a small boat over track lines pre-programmed into a handheld GPS unit. However, the majority of seafloor in most Pacific coral reef ecosystems is deeper than the approximately 30 m maximum depth attainable by standard CRED towboarding methods. For these deeper areas an evolving series of underwater camera sleds, usually referred to as the Towed Optical Assessment Device (TOAD), have been used to acquire optical validation data.
Contact Information
Point of Contact
John JB Rooney
john.rooney@noaa.gov
(808)725-5438
Metadata Contact
Michael W Akridge
michael.akridge@noaa.gov
(808)725-5483
Extents
144.44° W,
-156.6797° E,
28.4207° N,
-14.37157° S
2001-09-13 - Present
Item Identification
Title: | Optical Validation |
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Short Name: | Optical Validation |
Status: | In Work |
Abstract: |
Except for very small areas, it is not logistically feasible to optically image more than a small fraction of the seafloor deeper than about 30 m within a coral reef ecosystem using any technology currently available. Accordingly, optical imagery of the seafloor is collected primarily to ground truth or validate the interpretation of benthic habitat characteristics from bathymetry, backscatter imagery, or other data. To date, optical data have been collected using two different types of systems. In shallow waters, at depths between a few meters and 20?30 m, towboard divers with the NOAA Pacific Islands Fisheries Science Center?s Coral Reef Ecosystem Division (CRED) collect video or still imagery while being towed behind a small boat over track lines pre-programmed into a handheld GPS unit. However, the majority of seafloor in most Pacific coral reef ecosystems is deeper than the approximately 30 m maximum depth attainable by standard CRED towboarding methods. For these deeper areas an evolving series of underwater camera sleds, usually referred to as the Towed Optical Assessment Device (TOAD), have been used to acquire optical validation data. |
Purpose: |
These data provide optical observations that will be correlated with bathymetry and acoustic backscatter imagery to develop benthic habitat maps for selected US locations in the Pacific. |
Physical Location
Organization: | Pacific Islands Fisheries Science Center |
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City: | Honolulu |
State/Province: | HI |
Country: | USA |
Support Roles
Data Steward
Date Effective From: | 2006 |
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Date Effective To: | |
Contact (Person): | Lichowski, Frances |
Address: |
1845 Wasp Blvd. Honolulu, HI 96818 USA |
Email Address: | frances.lichowski@noaa.gov |
Phone: | (808)725-5476 |
Contact Instructions: |
Email preferred |
Distributor
Date Effective From: | 2007 |
---|---|
Date Effective To: | |
Contact (Person): | Akridge, Michael W |
Address: |
1845 Wasp Blvd. Honolulu, HI 96818 USA |
Email Address: | michael.akridge@noaa.gov |
Phone: | (808)725-5483 |
Contact Instructions: |
Email preferred |
Metadata Contact
Date Effective From: | 2007 |
---|---|
Date Effective To: | |
Contact (Person): | Akridge, Michael W |
Address: |
1845 Wasp Blvd. Honolulu, HI 96818 USA |
Email Address: | michael.akridge@noaa.gov |
Phone: | (808)725-5483 |
Contact Instructions: |
Email preferred |
Originator
Date Effective From: | 2002 |
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Date Effective To: | |
Contact (Organization): | Pacific Islands Fisheries Science Center (PIFSC) |
Address: |
1845 Wasp Blvd. Honolulu, HI 96818 USA |
Email Address: | pifsc.info@noaa.gov |
Phone: | 808-725-5360 |
URL: | https://www.pifsc.noaa.gov |
Business Hours: | 8:00 a.m. - 4:30 p.m. |
Point of Contact
Date Effective From: | 2010 |
---|---|
Date Effective To: | |
Contact (Person): | Rooney, John JB |
Address: |
1845 Wasp Blvd. Honolulu, HI 96818 USA |
Email Address: | john.rooney@noaa.gov |
Phone: | (808)725-5438 |
Contact Instructions: |
Email preferred |
Extents
Currentness Reference: | Ground Condition |
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Extent Group 1
Extent Group 1 / Geographic Area 1
W° Bound: | 144.44 | |
---|---|---|
E° Bound: | -156.6797 | |
N° Bound: | 28.4207 | |
S° Bound: | -14.37157 |
Extent Group 1 / Time Frame 1
Time Frame Type: | Continuing |
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Start: | 2001-09-13 |
URLs
URL 1
URL: | http://www.soest.hawaii.edu/pibhmc/ |
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Description: |
Pacific Islands Benthic Habitat Mapping Center (PIBHMC) website. |
Child Items
Rubric scores updated every 15m
Type | Title | |
---|---|---|
Data Set | Scleractinian Coral Cover Maps Derived from Classified in situ Seafloor Imagery for Select U.S. Locations in the Pacific from 2001 to 2015 |
Catalog Details
Catalog Item ID: | 12596 |
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GUID: | gov.noaa.nmfs.inport:12596 |
Metadata Record Created By: | Annette M DesRochers |
Metadata Record Created: | 2012-07-12 20:28+0000 |
Metadata Record Last Modified By: | SysAdmin InPortAdmin |
Metadata Record Last Modified: | 2022-10-20 02:17+0000 |
Metadata Record Published: | 2015-12-31 |
Owner Org: | PIFSC |
Metadata Publication Status: | Published Externally |
Do Not Publish?: | N |
Metadata Last Review Date: | 2015-12-31 |
Metadata Review Frequency: | 1 Year |
Metadata Next Review Date: | 2016-12-31 |