gov.noaa.nmfs.inport:25280 eng UTF8 dataset GIS dataset of raster files Pacific Islands Fisheries Science Center 808-725-5300 1845 Wasp Blvd. Honolulu HI 96818 USA https://www.pifsc.noaa.gov WWW:LINK-1.0-http--link Website Website for this organization information 8:00 a.m. - 4:30 p.m. resourceProvider Akridge, Michael W (808)725-5483 1845 Wasp Blvd. Honolulu HI 96818 USA michael.akridge@noaa.gov Email preferred pointOfContact 2025-12-03T01:00:28 ISO 19115-2 Geographic Information - Metadata Part 2 Extensions for imagery and gridded data ISO 19115-2:2009(E) Derived bathymetry from IKONOS satellite imagery of nearshore benthic habitats IKONOS DERIVED BATHY 2016 publication NOAA/NMFS/EDM 25280 https://www.fisheries.noaa.gov/inport/item/25280 WWW:LINK-1.0-http--link Full Metadata Record View the complete metadata record on InPort for more information about this dataset. information Pacific Islands Fisheries Science Center 808-725-5360 1845 Wasp Blvd. Honolulu HI 96818 USA pifsc.info@noaa.gov https://www.pifsc.noaa.gov WWW:LINK-1.0-http--link Pacific Islands Fisheries Science Center Website Pacific Island Fisheries Science Center homepage information 8:00 a.m. - 4:30 p.m. originator http://www.soest.hawaii.edu/pibhmc/pibhmc_mhi_mai_bathy.htm WWW:LINK-1.0-http--link Citation URL Online Resource download mapDigital Methods used were adapted from a "cookbook" of instructions developed by Kyle Hogref for using IKONOS imagery data to derive seafloor elevations in optically clear water. This dataset was derived from high-resolution (2 m) imagery from DigitalGlobe's WorldView-2 sensor of the Kaanapali area of Maui, Hawaii. Sensor bands 1,2 and 5 (coastal, blue and near IR respectively) were used to derive depth information. The method assumes uniform water clarity but deviations from that condition made extraction difficult in water greater than 30 m depth in the Kaanapali scene used. Results show that biotic material or sediment in the water column skewed results shallower if the material has a high albedo and deeper if the material has a low albedo. Nearshore areas were significantly less impacted in the Kaanapali area, due to the geomorphology of the area and the hi resolution and quality of the imagery, allowing visual descrimination of apparent sediment in the water column. For presentation purposes the map product shows an Inverse Distance Weighted interpolated bathymetry surface, restricted to data within 600 m of the shoreline. DG WorldView-2 data are used as the base imagery to derived pseudobathymetry of the Kaanapali area of Maui. This area has both SHOALS and multi-beam acoustic derived bathymetry coverage and will provide an example case of the strengths and weaknesses of pseudobathymetry extraction from high resolution satellite imagery methods. PIBHMC, CRED, PIFSC, NOAA, JIMAR and HMRG completed Rooney, John JB (808)725-5438 1845 Wasp Blvd. Honolulu HI 96818 USA john.rooney@noaa.gov Email preferred pointOfContact Ehses, Julia (808)725-5447 1845 Wasp Blvd. Honolulu HI 96818 USA julia.ehses@noaa.gov Email preferred custodian notPlanned http://www.soest.hawaii.edu/pibhmc/MHI_images/KaanapaliDerivedBathy_445.jpg Layout of data on original satellite imagery JPEG 467 Benthic Habitat Mapping and Characterization in the Pacific Islands Region Mapping and EcoSpatial Information Products to Support Coral Reef Ecosystem Management in the Pacific Islands Region theme CRCP Project Geographic Information > Bathymetry theme CoRIS Discovery Thesaurus EARTH SCIENCE > Oceans > Coastal Processes > Coral Reefs earth science > oceans > bathymetry/seafloor topography > bathymetry theme CoRIS Theme Thesaurus surface measurements theme NODC OBSERVATION TYPES THESAURUS Coral Reef Conservation Program theme NODC PROJECT NAMES THESAURUS US DOC; NOAA; NMFS; Pacific Islands Fisheries Science Center; Ecosystem Sciences Division; Coral Reef Ecosystem Program theme NODC SUBMITTING INSTITUTION NAMES THESAURUS Equatorial Pacific Ocean North Pacific Ocean Pacific Remote Islands Marine National Monument South Pacific Ocean place NODC SEA AREA NAMES THESAURUS SEA FLOOR stratum Global Change Master Directory CRED CREP Coral Reef Ecosystem Division Coral Reef Ecosystem Program PIFSC Pacific Islands Fisheries Science Center theme PRIA Pacific Remote Island Areas place DOC/NOAA/NMFS/PIFSC > Pacific Islands Fisheries Science Center, National Marine Fisheries Service, NOAA, U.S. Department of Commerce dataCentre Global Change Master Directory (GCMD) Data Center Keywords 2017-04-24 publication 8.5 Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA) https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords GCMD Keyword Forum Page Global Change Master Directory (GCMD). 2025. GCMD Keywords, Version 22. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords information custodian Bathymetry project InPort otherRestrictions Cite As: Pacific Islands Fisheries Science Center, [Date of Access]: Derived bathymetry from IKONOS satellite imagery of nearshore benthic habitats [Data Date Range], https://www.fisheries.noaa.gov/inport/item/25280. NOAA provides no warranty, nor accepts any liability occurring from any incomplete, incorrect, or misleading data, or from any incorrect, incomplete, or misleading use of the data. It is the responsibility of the user to determine whether or not the data is suitable for the intended purpose. otherRestrictions Access Constraints: none otherRestrictions Use Constraints: These data are not to be used for navigation purposes. Please acknowledge the NOAA Pacific Islands Fisheries Science Center, and the Joint Institute for Marine and Atmospheric Research (JIMAR) and Hawaii Mapping Research Group (HMRG) at the University of Hawaii as the sources of this information. otherRestrictions 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. unclassified Not applicable Not applicable NOAA Data Management Plan (DMP) NOAA/NMFS/EDM 25280 https://www.fisheries.noaa.gov/inportserve/waf/noaa/nmfs/pifsc/dmp/pdf/25280.pdf WWW:LINK-1.0-http--link NOAA Data Management Plan (DMP) NOAA Data Management Plan for this record on InPort. information crossReference eng; US elevation netCDF file created using the Generic Mapping Tools (GMT) and ArcGIS ASCII file, both created in a LINUX environment -156.776 -156.647 20.8357 20.9839 | Currentness: Ground Condition 2010-04-06 2010-04-06 LiDAR bathymetry of Kaanapali, Maui from Scanning Hydrographic Airborne Operational LiDAR data from the United States Army Corps of Engineers Joint Airborne LiDAR Bathymertry Technical Center for Expertise. Multibeam sonar data from the Main Hawaiian Islands Bathymetry synthesis maintained by the Hawaii Mapping Research Group at the University of Hawaii, School of Ocean and Earth Science and Technology. false eng false none NC - NetCDF Ehses, Julia (808)725-5447 1845 Wasp Blvd. Honolulu HI 96818 USA julia.ehses@noaa.gov Email preferred distributor ftp://ftp.soest.hawaii.edu/pibhmc/website/data/mhi/bathymetry/DD2_Depth2_filtermin4x4_10m.zip WWW:LINK-1.0-http--link ftp://ftp.soest.hawaii.edu/pibhmc/website/data/mhi/bathymetry/DD2_Depth2_filtermin4x4_10m.zip download dataset Accuracy Data are collected for resource management and research purposes and are examined for internal consistency; however, no effort is made to compare these data to external references or to other published data. Completeness Report Complete Conceptual Consistency These data are believed to be logically consistent though no tests were performed Multiple tools in ENVI 4.8 were used to complete the following processing steps: Data conversion from digital number to radiance, correction for atmosphere and water surface reflection, linearization of spectral decay as function of depth, masking of non-applicable values, and bathymetric derivation using variables from multiple linear regression analysis. Multiple tools in ArcGIS 10.0 were used for dataset integration and to extract values for the multiple linear regression analysis and subsequent error analyses. The statisitcs program Matlab was used for the multiple linear regression analysis to provide original variables for depth derivation. The multivariate slope intercept formula used to derive depth was D = a + (bi)(xi) + (bj)(xj) Where: D = depth a = intercept b = slope x = the linearized spectral value resulted in 7.8491 - 2.8696(b1) + 7.9593(b2) b1 is the output masked linearized pictral value of each pixel of Coastal band b2 is the output masked linearized pictral value of each pixel of Blue band More information on this integration process is provided in the product error analysis, availble from PIBHMC upon request. This mosaiced derived bathymetry product (JohDBall3) was then integrated with the multibeam sonar data, with sonar data prioritized over derived data, to create the final product (JohDB3MB). A detailed description of all processing steps is available at: ftp://ftp.soest.hawaii.edu/pibhmc/website/webdocs/documentation/Cookbook_042108.pdf An error analysis of each derived bathymetry grid used is available from PIBHMC upon request. To produce the interpolated surface shown in the map, the floating point grid was converted to a point shapefile in Arc GIS 9.3 using the 'float to raster' and 'raster to point' tools in the Arc Toolbox. A buffer of 600m from the shoreline was created and the derived bathymetry points were clipped to exclude data outside this buffer. This distance was chosen to exclude areas of deeper water that were erroneously returning shallow depth values, due to characteristics of the water column. An Inverse Distance Weighted interpolation was run using 3D Analyst, to produce an interpolated surface, with a grid cell size of 10 m, a variable search radius with a maximum distance of 60 m, and using the coastline as a barrier. All other settings used were default. The interpolated surface was clipped using the coastline and a small number of isolated cells were manually deleted. 2011-10-12T00:00:00 otherRestrictions otherRestrictions Access Constraints: None | Use Constraints: None