Estimated Depth Maps of the Northwestern Hawaiian Islands Derived from High Resolution IKONOS Satellite Imagery

Dataset Identification:

Resource Abstract:
Estimated shallow-water, depth maps were produced using rule-based, semi-automated image analysis of high-resolution satellite imagery for nine locations in the Northwestern Hawaiian Islands. This project is a cooperative effort among the National Oceanic and Atmospheric Administration, State of Hawaii Department of Land and Natural Resources, and the U.S. Fish and Wildlife Service to produce benthic habitat maps and georeferenced imagery for the Northwestern Hawaiian Islands. This project was conducted in support of the U.S. Coral Reef Task Force.
Citation
Title Estimated Depth Maps of the Northwestern Hawaiian Islands Derived from High Resolution IKONOS Satellite Imagery
alternateTitle  est_depth_nwhi
publication  Date   2002-12-31
presentationForm 
other Citation Details  
cited responsible party - principalInvestigator
individual Name Stumpf, Richard
organisation Name  
Contact information
Telephone
Voice 
Fax 
Address
, , ,  Country 
electronic Mail Address richard.stumpf@noaa.gov
hoursOfService 
contact Instructions
cited responsible party -
organisation Name  
Contact information
Linkage for online resource
name Citation URL
URL: http://ccma.nos.noaa.gov/ecosystems/coralreef/nwhi/
protocol WWW:LINK-1.0-http--link
link function download
Description Online Resource
Topic Category:  environment,oceans
Keywords:
Theme keywords (theme):
bathymetry/topography
coral
environmental monitoring
estimated depth
oceans
reef
satellite imagery
Location keywords:
French Frigate Shoals
Gardner Pinnacles
Kure Atoll
Laysan Island
Lisianski Island
Maro Reef
Midway Atoll
Necker Island
Nihoa Island
Northwestern Hawaiian Islands
Pearl and Hermes Atoll
United States
dataCenter Keywords
DOC/NOAA/NOS/NCCOS > National Centers for Coastal Ocean Science, National Ocean Service, NOAA, U.S. Department of Commerce
thesaurus name >
Title Global Change Master Directory (GCMD) Data Center Keywords
publication  Date   2017-04-24
Edition 8.5
project Keywords
NWHI_Benthic
purpose:
This project was conducted in support of the U.S. Coral Reef Task Force http://www.coris.noaa.gov
Resource language:  eng; US
Resource progress code:  completed
Resource Maintenance Information
maintenance or update frequency:  notPlanned
Constraints on resource usage:
Legal Constraints
Access Constraints  otherRestrictions
use constraint:  otherRestrictions
Other constraints
Access Constraints: None | Use Constraints: These maps are NOT to be used for navigation. These estimated depth maps of the Northwestern Hawaiian Islands have been reviewed by numerous decision makers and scientists familiar with the Northwestern Hawaiian Islands region. | Distribution Liability: Not to be used for navigation.
Constraints on resource usage:
Security Constraints
Classification  unclassified
Classification System 
Handling Description 
Spatial representation type code:  grid
Resource extent
Geographic Extent
Geographic Bounding Box
westBoundLongitude  -179
eastBoundLongitude  -160
northBoundLatitude  29
southBoundLatitude  22
Temporal Extent
| Currentness: Ground Condition 2000 2002
Additional information on resource:
Credits:
NOAA, University of Hawaii, U.S. Fish and Wildlife Service
point of contact - pointOfContact
individual Name Data Coordinator, NCCOS Scientific
organisation Name  National Centers for Coastal Ocean Science
Contact information
Telephone
Voice 
Fax 
Address
, , ,  Country 
electronic Mail Address NCCOS.data@noaa.gov
Linkage for online resource
name Website
URL: http://coastalscience.noaa.gov/
protocol WWW:LINK-1.0-http--link
link function information
Description Website listed for this contact
hoursOfService 
contact Instructions
point of contact - custodian
individual Name Data Coordinator, NCCOS Scientific
organisation Name  National Centers for Coastal Ocean Science
Contact information
Telephone
Voice 
Fax 
Address
, , ,  Country 
electronic Mail Address NCCOS.data@noaa.gov
Linkage for online resource
name Website
URL: http://coastalscience.noaa.gov/
protocol WWW:LINK-1.0-http--link
link function information
Description Website listed for this contact
hoursOfService 
contact Instructions
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Content information: feature catalog description

catalog language  eng
Included With Dataset  false
Compliance Code  false
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Scope of quality information
scope level  dataset
Resource lineage description
Lineage statement
Processing Step
date and time 2001-01-01T00:00:00
description Estimated depth was produced using a band-ratio procedure (see Stumpf et al., Limnology and Oceanography, 2003). The procedure uses two multispectral bands and requires very little tuning. Using this method, estimated depth can be determined in clear water to between 20 - 35 meters, depending on the bottom type and water clarity. Estimated depth (estimated water depths in feet) were assigned either a range of numeric values or a single numeric value representative of (but not equal to) depth. These individual numeric values or ranges of numeric values were used to apply a ramped RGB color palette. Because the environment in the NWHI is very complex, two profiles of estimated depth were generated. The "shallow-water" RGB depth profile was applied to Kure Atoll, Midway Atoll, Pearl and Hermes Atoll, and French Frigate Shoals. The "deep-water" RGB depth profile was applied to Lisianski Island, Laysan Island, Maro Reef, Necker Island, and Nihoa Island. Because the water surrounding Gardner Pinnacles is too deep, no estimated depth was generated there.
processing agent contact - processor
individual Name National Oceanic and Atmospheric Administration (NOAA), National Ocean Service (NOS), National Centers for Coastal Ocean Science (NCCOS), Center for Coastal Monitoring and Assessment (CCMA), Remote Sensing Team
Contact information
Address
electronic Mail Address Richard.Stumpf@noaa.gov
source
source description  Source Contribution: High resolution satellite imagery was analyzed to produce estimated depth maps of the Northwestern Hawaiian Island | Type of Source Media: IKONOS high-resolution satellite imagery
representative resolution scale:
Scale denominator: 4
source citation
Title IKONOS Panchromatic and Multispectral Imagery for the Northwestern Hawaiian Islands
publication  Date   2002-01-01
cited responsible party -
organisation Name  
Contact information
Linkage for online resource
name Source Citation URL
URL: http://www.spaceimaging.com/
protocol WWW:LINK-1.0-http--link
link function information
Description Source Citation URL
Resource extent
Temporal Extent
2000 2001
QuantitativeAttributeAccuracy
name Of Measure Accuracy
evaluation Method Description  Once maps were positioned, validation was performed by comparison to independently-acquired, trackline LIDAR data from Kure Atoll, Midway Atoll, and Pearl and Hermes Atoll. Validation also was performed by comparison to NOS nautical charts. The draft estimated depth maps were reviewed by scientists in Hawaii who have first-hand local knowledge of the Northwestern Hawaiian Islands. Comments were received and incorporated into draft maps.The absolute accuracy of estimated depth varies with water depth. The error is generally 0.3 meters for water less than 1 meter deep, + or - 15 percent in water up to 15 meters deep, and + or - 30 percent in water greater than 15 meters deep.
AbsoluteExternalPositionalAccuracy
name Of Measure Horizontal Positional Accuracy
evaluation Method Description  Spatial data meets or exceeds national map accuracy standards for fixed features. Kure Atoll, Midway Atoll, Pearl and Hermes Atoll, Lisianski Island, Laysan Island, French Frigate Shoals, and Nihoa Island are positioned to within five (5) meters at sea level. Necker Island is positioned to within 15 meters at sea level. Maro Reef is positioned to within eight (8) meters at sea level.
AbsoluteExternalPositionalAccuracy
name Of Measure Vertical Positional Accuracy
evaluation Method Description  none reported
Completeness Commission
name Of Measure Completeness Report
evaluation Method Description  High-resolution satellite imagery was analyzed to produce estimated depth maps of the North Western Hawaiian Islands. Estimated depth can be determined from imagery for clear water to between 20 m and 35 m, depending on the bottom type and absolute water clarity. Because the water surrounding Gardner Pinnacles is too deep, no estimated depth was generated there. No satellite imagery was available for Gambia Shoal.
ConceptualConsistency
name Of Measure Conceptual Consistency
evaluation Method Description  Multispectral satellite imagery was positioned using National Geodetic Survey ground control data for Kure Atoll, Midway Atoll, Pearl and Hermes Atoll, Lisianski Island, Laysan Island, French Frigate Shoals, and Nihoa Island. Satellite imagery of Necker Island was positioned using satellite ephemeris data. Satellite imagery of Maro Reef was positioned using a combination of satellite ephemeris data and supplemental depth transect data.

Resource distribution information

Distributor
distributor contact - distributor
individual Name Data Coordinator, NCCOS Scientific
organisation Name  National Centers for Coastal Ocean Science
Contact information
Telephone
Voice 
Fax 
Address
, , ,  Country 
electronic Mail Address NCCOS.data@noaa.gov
Linkage for online resource
name Website
URL: http://coastalscience.noaa.gov/
protocol WWW:LINK-1.0-http--link
link function information
Description Website listed for this contact
hoursOfService 
contact Instructions
Format
Format name geotiff
Format version 
Digital Transfer Options
Linkage for online resource
name http://ccma.nos.noaa.gov/ecosystems/coralreef/nwhi/
URL: http://ccma.nos.noaa.gov/ecosystems/coralreef/nwhi/
protocol WWW:LINK-1.0-http--link
link function download
Description 

Metadata data stamp:  2018-02-08T14:39:44
Metadata Constraints
Legal Constraints
use constraint:  otherRestrictions
Other constraints
Use Constraints: Disclaimer - While every effort has been made to ensure that these data are accurate and reliable within the limits of the current state of the art, NOAA cannot assume liability for any damages caused by any errors or omissions in the data, nor as a result of the failure of the data to function on a particular system. NOAA makes no warranty, expressed or implied, nor does the fact of distribution constitute such a warranty.
Metadata contact - resourceProvider
organisation Name  National Centers for Coastal Ocean Science
Contact information
Telephone
Voice 
Address
1305 East West Highway, Rm 8110, Silver Spring, MD, 20910
Linkage for online resource
name Website
URL: http://coastalscience.noaa.gov/
protocol WWW:LINK-1.0-http--link
link function information
Description Website for this organization
Metadata contact - pointOfContact
individual Name Data Coordinator, NCCOS Scientific
organisation Name  National Centers for Coastal Ocean Science
Contact information
Telephone
Voice 
Fax 
Address
, , ,  Country 
electronic Mail Address NCCOS.data@noaa.gov
Linkage for online resource
name Website
URL: http://coastalscience.noaa.gov/
protocol WWW:LINK-1.0-http--link
link function information
Description Website listed for this contact
hoursOfService 
contact Instructions
Metadata scope code  dataset
Metadata language  eng
Metadata character set encoding:   UTF8
Metadata standard for this record:  ISO 19115-2 Geographic Information - Metadata Part 2 Extensions for imagery and gridded data
standard version:  ISO 19115-2:2009(E)
Metadata record identifier:  gov.noaa.nmfs.inport:39306

Metadata record format is ISO19139-2 XML (MI_Metadata)