Gridded bathymetry of Kaneohe Bay, Windward Side Oahu, Main Hawaiian Islands, USA.

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: 20111030
Title:

Gridded bathymetry of Kaneohe Bay, Windward Side Oahu, Main Hawaiian Islands, USA.

Geospatial_Data_Presentation_Form: digital data
Online_Linkage:

https://www.soest.hawaii.edu/pibhmc/cms/data-by-location/main-hawaiian-islands/oahu/bathymetry/

Online_Linkage: http://www.soest.hawaii.edu/pibhmc

Description:

Abstract:

4-m grid of bathymetric data of Kaneohe Bay, Windward Side Oahu, Main Hawaiian Islands, USA. These netCDF and ASCII grids include multibeam bathymetry from the Reson 8101 multibeam sonar collected by the National Oceanic and Atmospheric Administration (NOAA) survey launch Acoustic Habitat Investigator (AHI) in 2009 and 2010 in Kaneohe Bay, Oahu by the NOAA Coral Reef Ecosystem Division in depths between 5 and 50 meters. The 4-m grid also contains bathymetric Light Detecting and Ranging (LiDAR) data collected by the US Army Corps of Engineers (ACOE) in 2000 and 2007.

Purpose:

These netCDF and ASCII grids were created using data gathered from multibeam and LiDAR depth measurements for use as a planning and reference document. The data are also being used for benthic habitat mapping, for locating Essential Fish Habitat, and for studying geologic features of the area. Refer to supplemental information for description of instrument and survey.

Supplemental_Information:

Multibeam data were collected 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 R/V AHI's survey sensors include a 240 kHz RESON 8101-ER sonar providing bathymetry and imagery data, a TSS/Applanix POS/MV Model 320 which measures position, velocity, attitude and heading, and a Seabird SBE 19 CTD used to measure sound velocity profiles. These metadata can be accessed at: https://www.soest.hawaii.edu/pibhmc/cms/cruise-catalog/ The 4m gridded bathymetric LiDAR data were collected by the ACOE and metadata for these can be found at http://shoals.sam.usace.army.mil/hawaii/pages/Oahu.htm and at ftp://ftp.soest.hawaii.edu/pibhmc/website/data/mhi/bathymetry/2007_HI_KaneoheBay_H_ASC.txt.xml

Time_Period_of_Content:

Time_Period_Information:

Range_of_Dates/Times:

Beginning_Date: 20000101
Ending_Date: 20101010

Currentness_Reference: ground condition

Status:

Progress: Complete
Maintenance_and_Update_Frequency: As needed

Spatial_Domain:

Bounding_Coordinates:

West_Bounding_Coordinate: -157.53
East_Bounding_Coordinate: -157.50
North_Bounding_Coordinate: 21.41
South_Bounding_Coordinate: 21.20

Keywords:

Theme:

Theme_Keyword_Thesaurus: NCEI Geoportal Filter
Theme_Keyword: CoRIS_Metadata

Theme:

Theme_Keyword_Thesaurus: CRCP Project
Theme_Keyword:

Benthic Habitat Mapping and Characterization in the Pacific Islands Region

Theme_Keyword: 467

Theme:

Theme_Keyword_Thesaurus: CoRIS Theme Thesaurus
Theme_Keyword:

EARTH SCIENCE > Oceans > Bathymetry/Seafloor Topography > Bathymetry

Theme:

Theme_Keyword_Thesaurus: ISO 19115 Topic Category
Theme_Keyword: elevation
Theme_Keyword: 006

Theme:

Theme_Keyword_Thesaurus: CoRIS Discovery Thesaurus
Theme_Keyword: Geographic Information > Bathymetry

Theme:

Theme_Keyword_Thesaurus: None
Theme_Keyword: Bathymetry
Theme_Keyword: Multibeam sonar

Place:

Place_Keyword_Thesaurus: None
Place_Keyword: Hawaiian Islands
Place_Keyword: Oahu

Place:

Place_Keyword_Thesaurus: CoRIS Region
Place_Keyword: MHI

Place:

Place_Keyword_Thesaurus: CoRIS Place Thesaurus
Place_Keyword:

OCEAN BASIN > Pacific Ocean > Central Pacific Ocean > Hawaiian Islands > Oahu Island > Oahu (21N157W0003)

Place_Keyword:

COUNTRY/TERRITORY > United States of America > Hawaii > Honolulu > Oahu (21N157W0003)

Access_Constraints: None.
Use_Constraints:

These data are NOT TO BE USED FOR NAVIGATION purposes. Please acknowledge the PIFSC,the Joint Institute for Marine and Atmospheric Research(JIMAR), and CRED/PIBHMC as the sources of this information.

Point_of_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization:

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

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

Browse_Graphic:

Browse_Graphic_File_Name:

https://www.soest.hawaii.edu/pibhmc/MHI_images/kaneohe_bathy_4m_445.jpg

Browse_Graphic_File_Description: Multibeam Bathymetry
Browse_Graphic_File_Type: JPEG

Data_Set_Credit: PIBHMC, CRED, PIFSC, NOAA, JIMAR, ACOE
Security_Information:

Security_Classification_System: Not applicable
Security_Classification: Unclassified
Security_Handling_Description: Not applicable

Native_Data_Set_Environment:

netCDF file created using the Generic Mapping Tools (GMT) and ArcGIS ASCII file, both created in a LINUX environment

Data_Quality_Information:

Attribute_Accuracy:

Attribute_Accuracy_Report:

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:

These data are believed to be logically consistent though no tests were performed, with the following exception. 2009 multibeam data were collected during transits in and out of Kaneohe Bay at varying surveys speeds and were not compensated for settlement and squat. Thus some depth discrepancies occur between the 2009 and 2010 data sets, which were not completely resolved during processing.

Completeness_Report: Complete
Positional_Accuracy:

Horizontal_Positional_Accuracy:

Horizontal_Positional_Accuracy_Report:

Horizontal positioning system: GPS (SPS) Horizontal position accuracy: 25 m

Vertical_Positional_Accuracy:

Vertical_Positional_Accuracy_Report:

1 m Raw sounding resolution: Variable

Lineage:

Process_Step:

Process_Description:

Multibeam swath files are acquired in the Generic Sensor Format (GSF) and are edited on a swath by swath basis using SAIC's SABER editing software. The edited swath files are then combined into a 2-m Pure File Magic (PFM) format in SABER and area based editing is performed. The edited PFM 2-m was then exported as X,Y,Z. The XYZ files were read into Global Mapper, a commercial application, combined with the 4-m ACOE LiDAR data, and exported as an ArcASCII file and imported into ArcGIS . aAdditional information about the multibeam data processing is recorded in the cruise metadata.

Process_Date: 20111027

Spatial_Data_Organization_Information:

Direct_Spatial_Reference_Method: Raster
Raster_Object_Information:

Raster_Object_Type: Grid Cell
Row_Count: 3853
Column_Count: 3531
Vertical_Count: 1

Spatial_Reference_Information:

Horizontal_Coordinate_System_Definition:

Planar:

Grid_Coordinate_System:

Grid_Coordinate_System_Name: Universal Transverse Mercator
Universal_Transverse_Mercator:

UTM_Zone_Number: 4
Transverse_Mercator:

Scale_Factor_at_Central_Meridian: 0.9996
Longitude_of_Central_Meridian: -159
Latitude_of_Projection_Origin: 0.0
False_Easting: 500000
False_Northing: 0.0

Planar_Coordinate_Information:

Planar_Coordinate_Encoding_Method: Row and Column
Coordinate_Representation:

Abscissa_Resolution: 4
Ordinate_Resolution: 4

Planar_Distance_Units: meters

Geodetic_Model:

Horizontal_Datum_Name: D_WGS_1984
Ellipsoid_Name: WGS_1984
Semi-major_Axis: 6378137.000000
Denominator_of_Flattening_Ratio: 298.257224

Vertical_Coordinate_System_Definition:

Depth_System_Definition:

Depth_Datum_Name: mean lower low water
Depth_Resolution: 0.01
Depth_Distance_Units: meters
Depth_Encoding_Method: Attribute Values

Entity_and_Attribute_Information:

Overview_Description:

Entity_and_Attribute_Overview:

Depth values are real values based on the average of the soundings that fell within the extracted grid cells. The number of soundings per grid cell range from >1000 soundings in shallow depths to as few as 20 soundings in deeper areas. A total error budget for this survey has not been developed, but there are known inconsistencies between the 2009 and 20010 multibeam data. Therefore, the accuracy of depth measurements should be considered to be within 2 meters.

Entity_and_Attribute_Detail_Citation: none

Distribution_Information:

Distributor:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization:

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

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

Resource_Description: Downloadable Data
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: netCDF and Arc ASCII
Format_Information_Content:

These data can be downloaded as either a 2-D binary netCDF raster grid or an ArcGIS ASCII text file. The netCDF grid is the default grid file format used by GMT (Generic Mapping Tools), which created this file. More information can be located at http://www.soest.hawaii.edu/gmt/and https://www.unidata.ucar.edu/software/netcdf/. The Arc ASCII file, for use in ESRI's (http://www.esri.com) GIS software, can be converted to an Arc Raster Grid using ArcToolbox ASCII to Raster conversion tool.

Digital_Transfer_Option:

Online_Option:

Computer_Contact_Information:

Network_Address:

Network_Resource_Name:

ftp://ftp.soest.hawaii.edu/pibhmc/website/data/mhi/bathymetry/kaneohe_bathy_4m.zip

Fees: None

Gridded bathymetry of Kaneohe Bay, Windward Side Oahu, Main Hawaiian Islands, USA.

Metadata: