Mosaic of gridded multibeam bathymetry and bathymetry derived from multispectral World View-2 satellite imagery of Ni'ihau Island, Territory of Main Hawaiian Islands, USA
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Metadata:
- Identification_Information:
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- Citation:
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- Citation_Information:
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- Originator:
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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: 20121215
- Title:
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Mosaic of gridded multibeam bathymetry and bathymetry derived
from multispectral World View-2 satellite imagery of Ni'ihau Island,
Territory of Main Hawaiian Islands, USA
- Geospatial_Data_Presentation_Form: raster digital data
- Online_Linkage:
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http://www.soest.hawaii.edu/pibhmc/cms/data-by-location/main-hawaiian-islands/nihau/bathymetry/
- Online_Linkage: https://www.soest.hawaii.edu/pibhmc/cms/
- Description:
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- Abstract:
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Gridded multibeam bathymetry is integrated with bathymetry
derived from multpectral World View-2 satellite data. Gridded (5 m cell
size) multibeam bathymetry collected aboard NOAA Ship Hiialaka'i and
R/V AHI. Bathymetry values shallower than ~20 m were derived by
gauging the reletive attenuation of coastal, blue, green and yellow
spectral radiance as a function of depth. A multiple linear regression
analysis of coastal,blue, green and yellow band spectral values against depth
determined the variables of y-intercept, coastal,blue, green and yellow
slope values. Variables then used in multivariate slope intercept formula
to derive depth. Digital image processing to derive depths conducted with
the ENVI 4.8 software program while data editing and integration was performed
using ArcGIS 10. This data set is for the shelf environment of Ni'ihau Island,
Hawaii.
- Purpose:
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The data were derived in support of NOAA Coral Reef Conservation
Program goals. Goal 1 is to map all U.S. Coral Reef Ecosystems.
This data set specifically addresses Objective 1 and 4: to develop
high-resolution benthic maps and to characterize priority deep
water reefs and associated habitats. This integration of derived
bathymetry with multibeam sonar data provides a GIS layer with
expanded spatial coverage that may be used for benthic and essential
fish habitat characterization, and for the study of geologic features.
By combining the dataset with other bathymetry, backscatter, derivatives,
and in situ data, they collectively compose benthic habitat maps
designed to be used to understand and predict shallow depth (0m to 150m)
benthic habitats for organisms that inhabit coral reef ecosystems.
- Supplemental_Information:
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Gridded multibeam data were collected aboard the Hi'ialakai, a 218
United States National Oceanographic and Atmospheric Administration
(NOAA) research ship, and aboard the R/V AHI (Acoustic Habitat
Investigator), a 25' survey launch owned and operated by the NOAA
Pacific Islands Fisheries Science Center in Honolulu, HI. The
metadata for the bathymetry is documented in the product metadata,
niihau_5m.grd.txt.
http://www.soest.hawaii.edu/pibhmc/cms/data-by-location/main-hawaiian-islands/nihau/bathymetry/
Original World View-2 imagery was purchased to support the Pacific Islands
Geographic Information System (GIS) project and National Ocean Service's
(NOS) coral mapping activities. Orthographically corrected World View-2 Imagery
was provided by USGS, State of Hawaii and USDA. The metadata for this World View-2
imagery is documented in the original product metadata,
10JAN02213954-M3XM-052386144080_01_P001.(http://www.soest.hawaii.edu/pibhmc/)
- Time_Period_of_Content:
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- Time_Period_Information:
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- Range_of_Dates/Times:
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- Beginning_Date: 20050613
- Ending_Date: 20100102
- Currentness_Reference: ground condition
- Status:
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- Progress: Complete
- Maintenance_and_Update_Frequency: As needed
- Spatial_Domain:
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- Bounding_Coordinates:
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- West_Bounding_Coordinate: -160.282325987
- East_Bounding_Coordinate: -160.02398098
- North_Bounding_Coordinate: 22.056437646
- South_Bounding_Coordinate: 21.7349740969
- Keywords:
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- Theme:
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- Theme_Keyword_Thesaurus: NCEI Geoportal Filter
- Theme_Keyword: CoRIS_Metadata
- Theme:
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- Theme_Keyword_Thesaurus: CRCP Project
- Theme_Keyword:
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Benthic Habitat Mapping and Characterization in the Pacific Islands Region
- Theme_Keyword: 467
- Theme:
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- Theme_Keyword_Thesaurus: CoRIS Theme Thesaurus
- Theme_Keyword:
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EARTH SCIENCE > Oceans > Bathymetry/Seafloor Topography > Bathymetry
- Theme_Keyword:
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EARTH SCIENCE > Oceans > Bathymetry/Seafloor Topography > Water Depth
- Theme_Keyword:
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EARTH SCIENCE > Biosphere > Zoology > Corals > Reef Monitoring and Assessment > Remote Sensing > Satellite (digital scans) > WorldView-2
- Theme:
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- Theme_Keyword_Thesaurus: None
- Theme_Keyword: Slope
- Theme_Keyword: Bathymetry
- Theme_Keyword: Multibeam sonar
- Theme:
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- Theme_Keyword_Thesaurus: CoRIS Discovery Thesaurus
- Theme_Keyword: Geographic Information > Bathymetry
- Theme:
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- Theme_Keyword_Thesaurus: ISO 19115 Topic Category
- Theme_Keyword: elevation
- Theme_Keyword: 006
- Place:
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- Place_Keyword_Thesaurus: None
- Place_Keyword: Niihau Island
- Place_Keyword: Hawaii
- Place_Keyword: United States of America
- Place:
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- Place_Keyword_Thesaurus: CoRIS Place Thesaurus
- Place_Keyword:
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OCEAN BASIN > Pacific Ocean > Central Pacific Ocean > Hawaiian Islands > Niihau Island > Niihau Island (21N160W0001)
- Place_Keyword:
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COUNTRY/TERRITORY > United States of America > Hawaii > Kauai > Niihau Island (21N160W0001)
- Place:
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- Place_Keyword_Thesaurus: CoRIS Region
- Place_Keyword: MHI
- Access_Constraints: None
- Use_Constraints:
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These data are not to be used for navigation purposes.
Please acknowledge the NOAA Coral Reef Ecosystem Division,
Pacific Islands Fisheries Science Center and the Pacific Islands Benthic
Habitat Mapping Center, School of Ocean and Earth Science and Technology, University
of Hawaii as the sources of this information.
- Point_of_Contact:
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- Contact_Information:
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- Contact_Organization_Primary:
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- Contact_Organization:
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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:
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- Address_Type: mailing and physical address
- Address: NOAA IRC
- Address: NMFS/PIFSC/CRED
- Address: 1845 WASP Blvd., Building 176
- City: Honolulu
- State_or_Province: HI
- Postal_Code: 96818
- Country: USA
- Contact_Voice_Telephone: 808 725-5360
- Contact_Electronic_Mail_Address: nmfs.pic.credinfo@noaa.gov
- Browse_Graphic:
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- Browse_Graphic_File_Name:
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ftp://ftp.soest.hawaii.edu/pibhmc/website/data/mhi/bathymetry/NII_DBMB_5m_445.jpg
- Browse_Graphic_File_Description: Gridded Bathymetry
- Browse_Graphic_File_Type: jpg
- Data_Set_Credit:
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Benthic Habitat Mapping Group, Coral Reef Ecosystem Division
(CRED), Pacific Islands Fisheries Science Center (PIFSC), NOAA
- Security_Information:
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- Security_Classification_System: Not applicable
- Security_Classification: Unclassified
- Security_Handling_Description: Not applicable
- Native_Data_Set_Environment:
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ArcGIS ASCII file or ArcGIS Grid file,
bathymetry derived from 2x2m multispectral satellite imagery (World View-2)
using ENVI 4.8, multibeam and derived bathymetry were integrated using
ArcGIS 10
- Data_Quality_Information:
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- Attribute_Accuracy:
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- Attribute_Accuracy_Report:
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Data are collected for resource
management and research purposes and are tested for
internal consistency; however, no effort is made to compare
these data to external references or to other published data.
- Logical_Consistency_Report:
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These data are believed to be logically
consistent though no tests were performed
- Completeness_Report: Complete
- Positional_Accuracy:
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- Horizontal_Positional_Accuracy:
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- Horizontal_Positional_Accuracy_Report:
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Horizontal positioning system: GPS C/A
Horizontal position accuracy: 25 meters
- Vertical_Positional_Accuracy:
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- Vertical_Positional_Accuracy_Report:
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Range resolution of sonar: varies with depth
Raw sounding resolution: varies with depth
Vertical accuracy of gridded sonar product: ~ 1% of water depth
Vertical accuracy of derived bathymetry product: 5 meter range
- Lineage:
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- Process_Step:
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- Process_Description:
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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, masking of
non-applicable values, and bathymetric derivation using variables
from multiple linear regression analysis. Multiple tools in
ArcGIS 10 were used for dataset integration and to extract values
for the multiple linear regression analysis and subsequent error
analyses. The Microsoft program Excel 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 Depth=Yint+(Mcoastal)(Xcoastal)+(Mblue)(Xblue)+(Mgreen)(Xgreen)+(Myellow)(XYellow).
Three products were derived, all from the original image 10JAN02213954-M3XM-052386144080_01_P001,
which was devided in three sections SW, N, E Niihau.The MLR variables for SW Niihau
were Yint=70.04351364, Mcoastal=-0.411613009, Mblue=-1.30485119, Mgreen=-1.031082842,
Myellow=0.786152945, for E Niihau were Yint=-24.38584123, coastal=-184.3932459,
Mblue=-403.3462551, Mgreen=1135.36388, Myellow=-246.50699213 and for N Niihau were
Yint=-33.44035302, Mcoastal=0.253885458, Mblue=-0.727701937, Mgreen=1.185332714, Myellow=0.841131904
The derived bathymetry mosaics from each image section were in turn mosaiced
giving the data from SW Niihau priority over N Niihau due to its statistaclly
higher accuracy. This mosaiced derived bathymetry product (NII_DBAll_5m)
was then integrated with the multibeam sonar data, with sonar data prioritized over derived data,
to create the final product (NII_DBMB_5m).
A detailed description of all processing steps
and an error analysis of each derived bathymetry grid used is
available upon request.
- Process_Date: 20121115
- Spatial_Data_Organization_Information:
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- Direct_Spatial_Reference_Method: Raster
- Raster_Object_Information:
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- Raster_Object_Type: Pixel
- Row_Count: 35390
- Column_Count: 26425
- Vertical_Count: 1
- Spatial_Reference_Information:
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- Horizontal_Coordinate_System_Definition:
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- Planar:
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- Grid_Coordinate_System:
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- Grid_Coordinate_System_Name: Universal Transverse Mercator
- Universal_Transverse_Mercator:
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- UTM_Zone_Number: 5
- Transverse_Mercator:
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- Scale_Factor_at_Central_Meridian: 0.9996
- Longitude_of_Central_Meridian: -159
- Latitude_of_Projection_Origin: 0
- False_Easting: 500000
- False_Northing: 10000000
- Planar_Coordinate_Information:
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- Planar_Coordinate_Encoding_Method: row and column
- Coordinate_Representation:
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- Abscissa_Resolution: 5
- Ordinate_Resolution: 5
- Planar_Distance_Units: meters
- Geodetic_Model:
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- Horizontal_Datum_Name: D_WGS_1984
- Ellipsoid_Name: WGS_1984
- Semi-major_Axis: 6378137.000000
- Denominator_of_Flattening_Ratio: 298.257224
- Distribution_Information:
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- Distributor:
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- Contact_Information:
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- Contact_Organization_Primary:
-
- Contact_Organization:
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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: Honolulu
- State_or_Province: HI
- Postal_Code: 96818
- Country: USA
- Contact_Voice_Telephone: 808 725-5360
- Contact_Electronic_Mail_Address: nmfs.pic.credinfo@noaa.gov
- Resource_Description: Downloadable Data
- Distribution_Liability:
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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:
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- Digital_Form:
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- Digital_Transfer_Information:
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- Format_Name: Arc Grid
- Format_Information_Content:
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Arc Grid can be opened directly using
ArcMap or ArcCatalog.
- Digital_Transfer_Option:
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- Online_Option:
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- Computer_Contact_Information:
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- Network_Address:
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- Network_Resource_Name:
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ftp://ftp.soest.hawaii.edu/pibhmc/website/data/mhi/bathymetry/Nii_DBMB_5m.zip
- Fees: None
- Metadata_Reference_Information:
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- Metadata_Date: 20200329
- 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: Honolulu
- State_or_Province: HI
- Postal_Code: 96818
- Country: USA
- Contact_Voice_Telephone: 808 725-5360
- Contact_Electronic_Mail_Address: nmfs.pic.credinfo@noaa.gov
- 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
- CoRIS:
-
- CoRIS_Metadata_Link:
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https://www.coris.noaa.gov/metadata/records/html/nii_dbmb_5m.html
- CoRIS_Tracking_ID: 6617
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