CRED Reson 8101 multibeam backscatter data from portions of the banktop and bank edge environments at Pearl and Hermes Atoll, Hawaii, USA with 1 meter resolution
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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: 20071201
- Title:
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CRED Reson 8101 multibeam backscatter data from portions of
the banktop and bank edge environments at Pearl and Hermes Atoll, Hawaii,
USA with 1 meter resolution
- Geospatial_Data_Presentation_Form: digital data
- Online_Linkage: ftp://ftp.soest.hawaii.edu/pibhmc
- Description:
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- Abstract:
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Multibeam backscatter imagery extracted from gridded
bathymetry of Pearl and Hermes Atoll, Northwestern Hawaiian
Islands, USA. These data provide coverage between 0 and 500
meters. The backscatter dataset includes data collected using
the Reson 8101 multibeam sonar. The sonars frequency is 240 kHz.
These metadata are for the 1 m grid cell size Reson 8101
multibeam backscatter data only.
- Purpose:
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The GeoTIFFs and netCDF grids of backscatter imagery were
created using data gathered from multibeam soundings 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:
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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,
Hawaii. The R/V AHI's survey sensors include a 240 kHz Reson
8101-ER sonar providing multibeam bathymetry and backscatter
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. Specific equipment
configurations are documented in metadata from cruises AHI0609.
These metadata can be accessed at
http://www.soest.hawaii.edu/pibhmc/cms/cruise-catalog/.
- 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: 20000623
- Ending_Date: 20060720
- 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: -176.04
- East_Bounding_Coordinate: -175.69
- North_Bounding_Coordinate: 27.99
- South_Bounding_Coordinate: 27.74
- 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 - Northwestern and Main Hawaiian Islands
- Theme_Keyword: 1217
- Theme:
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- Theme_Keyword_Thesaurus: none
- Theme_Keyword:
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EARTH SCIENCE > Oceans > Bathymetry/Seafloor Topography > Backscatter
- Theme_Keyword: Acoustic Imagery
- Theme_Keyword: Multibeam Backscatter
- Theme_Keyword: Backscatter
- Theme:
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- Theme_Keyword_Thesaurus: CoRIS Theme Thesaurus
- Theme_Keyword:
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EARTH SCIENCE > Oceans > Bathymetry/Seafloor Topography > Backscatter
- Theme:
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- Theme_Keyword_Thesaurus: ISO 19115 Topic Category
- Theme_Keyword: oceans
- Theme_Keyword: 014
- Theme_Keyword: elevation
- Theme_Keyword: 006
- Theme:
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- Theme_Keyword_Thesaurus: CoRIS Discovery Thesaurus
- Theme_Keyword: Geographic Information > Backscatter
- Place:
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- Place_Keyword_Thesaurus: CoRIS Place Thesaurus
- Place_Keyword:
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OCEAN BASIN > Pacific Ocean > Central Pacific Ocean > Northwestern Hawaiian Islands > Pearl and Hermes Reef (27N176W0001)
- Place_Keyword:
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COUNTRY/TERRITORY > United States of America > Hawaii > Honolulu > Pearl and Hermes Reef (27N176W0001)
- Place:
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- Place_Keyword_Thesaurus: CoRIS Region
- Place_Keyword: NWHI
- Place:
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- Place_Keyword_Thesaurus: None
- Place_Keyword: Pearl and Hermes Atoll
- Place_Keyword: Hawaii
- Place_Keyword: Northwestern Hawaiian Islands
- Place_Keyword: United States of America
- Place:
-
- Place_Keyword_Thesaurus: none
- Place_Keyword:
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OCEAN BASIN > Pacific Ocean > Central Pacific
Ocean > Hawaiian Islands > Pearl and Hermes Atoll
- Place_Keyword:
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COUNTRY/TERRITORY > United States of America >
Hawaii > Honolulu
- Access_Constraints: None
- Use_Constraints:
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These data are not to be used for navigation purposes.
Please acknowledge NOAA and the Joint Institute for Marine and
Atmospheric Research (JIMAR)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:
-
- 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
- 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:
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- Browse_Graphic_File_Name: http://www.soest.hawaii.edu/pibhmc/NWHI_images/ph_bs_440.jpg
- Browse_Graphic_File_Description: Multibeam Backscatter, Acoustic Imagery
- Browse_Graphic_File_Type: JPEG
- Browse_Graphic:
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- Browse_Graphic_File_Name:
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http://www.soest.hawaii.edu/pibhmc/NWHI_images/ph_8101_boxes_440.jpg
- Browse_Graphic_File_Description: Multibeam Backscatter, Acoustic Imagery
- Browse_Graphic_File_Type: JPEG
- Data_Set_Credit: PIBHMC, CRED, PIFSC, NOAA and JIMAR
- 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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GeoTIFF and netCDF grid file created
using HMRG software in a LINUX environment
- 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 (SPS)
Horizontal position accuracy: 25 meters
- Vertical_Positional_Accuracy:
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- Vertical_Positional_Accuracy_Report:
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1 m
Range resolution of sonar ~1.25 cm
Raw sounding resolution: Variable
Vertical accuracy of gridded product: 1% of water depth
- Lineage:
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- Process_Step:
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- Process_Description:
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Science Applications International Corporation's (SAIC)ISS-2000
acquires, processes and records data, provides survey control
and underway quality control displays. SAIC's SABER processing
software is used to process the raw soundings, analyze the
results, manually edit the sounding data to remove outliers and
derive average gridded data values. Additional data acquisition
and processing information can be found in the metadata for
cruises AHI0609. Hawaii Mapping Research Group (HMRG) processing
software was then used to extract values of acoustic intensity
from the soundings. HMRG is an organization of scientists,
engineers and technicians whose mission is to design, build,
and operate tools for mapping the seafloor. HMRG is a group
within the School of Ocean and Earth Science and Technology at
the University of Hawaii at Manoa. The gsf2bs program (July,
2005) converts the swath bathymetry ping records contained
within a GSF (Generic Sensor Format) version 2.02 dataset into
bs file format. This is done as follows: (i) position each
beam's bottom detect intensity sample at the across-track
location of that beam's bathymetry value; (ii) assuming a flat
bottom in the near neighborhood of the beam, compute across-
track distances for all of the beam's remaining intensity
samples based on their temporal relation to the bottom detect
sample and the computed average sound velocity for that beam as
derived from its range and travel time; (iii) after all of the
intensity samples from all beams of a ping have been located in
across-track distance, fill the gaps between them as necessary
by comparing travel times
of beams adjacent to the gap, assigning the position using the
adjacent sample closest to nadir, and averaging the interpolated
values that fall within a cell. The conversion described above
is necessary in order to run HMRG backscatter processing
operations on the data, such as filtering to remove noise, and
to create netCDF grids, raster images and GeoTIFF's. For more
information on the backscatter processing technique see
<http://www.soest.hawaii.edu/pibhmc/pibhmc_documentation.htm>.
Software_Used:
SAIC ISS-2000 Acquisition Software, v 3.4
SAIC SABER Processing Software, v 3.3.15
Hawaii Mapping Research Group (HMRG) Processing Software
GMT Generic Mapping Tools, v 4.1
MB System, v 5.0.7
- Process_Date: 20071018
- Spatial_Data_Organization_Information:
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- Direct_Spatial_Reference_Method: Raster
- Raster_Object_Information:
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- Raster_Object_Type: Grid Cell
- Row_Count: 27183
- Column_Count: 33820
- 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: -1
- Transverse_Mercator:
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- Scale_Factor_at_Central_Meridian: 0.9996
- Longitude_of_Central_Meridian: -177
- Latitude_of_Projection_Origin: 0
- False_Easting: 500000
- False_Northing: 0
- Planar_Coordinate_Information:
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- Planar_Coordinate_Encoding_Method: Row and Column
- Coordinate_Representation:
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- Abscissa_Resolution: 1
- Ordinate_Resolution: 1
- 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
- Vertical_Coordinate_System_Definition:
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- Depth_System_Definition:
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- Depth_Datum_Name: mean lower low water
- Depth_Resolution: 0.01
- Depth_Distance_Units: meters
- Depth_Encoding_Method: Attribute Values
- Entity_and_Attribute_Information:
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- Overview_Description:
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- Entity_and_Attribute_Overview:
-
Sidescan data within a GSF file are arranged as small sequences
of intensity values, one sequence per beam per ping. The
intensity values represent the amplitude of echo returns to the
sensor and can be related to seabed roughness.
- Entity_and_Attribute_Detail_Citation: none
- Distribution_Information:
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- Distributor:
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- Contact_Information:
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- 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
- 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:
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- Format_Name: GeoTIFF, .tif
- Format_Information_Content:
-
TIFF is a format for storage, transfer, display, and
printing of raster images. The TIFF file structure allows
both the tag and the image data to be encoded into the
same file. GeoTIFF refers to a TIFF file that has
geographic data embedded as tags within the TIFF file. The
geographic data can be used to position the image in the
correct location and geometry on the screen of a
geographic information display. Any GIS, CAD, Image
Processing, Desktop Mapping and other types of systems
using geographic images can read any GeoTiff file. More
specifically, files of this type can be added to ArcInfo
and ArcView 8.x or higher and may be viewed in the Table
of Contents as a new raster layer. Image visualization
software that does not use geography as a basis for image
placement can view a GeoTIFF image as if there were no
geographic information in the TIFF file. For example,
GeoTIFF files can be viewed using Windows Picture and Fax
viewer. The GeoTIFF format is public domain, non-
proprietary.
- 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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http://www.soest.hawaii.edu/pibhmc/cms/data-by-location/northwest-hawaiian-islands/pearl-and-hermes-atoll/backscatter/
- Digital_Form:
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- Digital_Transfer_Information:
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- Format_Name: netCDF, .grd
- Format_Information_Content:
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This file is formatted as a 2-D binary netCDF grid file.
This is the default grid file format used by GMT (Generic
Mapping Tools). The file was created by the HMRG sofware
program bsovl. More information about netCDF files can be
found at at http://www.soest.hawaii.edu/gmt/ and
http://www.unidata.ucar.edu/software/netcdf/.
List of Pearl and Hermes Atoll Reson 8101 backscatter
netCDF files and bounding coordinates
PH-8101-8-01.01.00m.ss
W/E/S/N -176.02/-175.94/27.84/27.90
ph-8101-8-02.01.00m.ss.tif
W/E/S/N -175.95/-175.87/27.87/27.93
ph-8101-8-03.01.00m.ss.tif
W/E/S/N -175.91/-175.83/27.92/27.98
ph-8101-8-04.01.00m.ss.tif
W/E/S/N -175.84/-175.76/27.93/27.99
ph-8101-8-05.01.00m.ss.tif
W/E/S/N -175.76/-175.69/27.88/27.94
ph-8101-8-06.01.00m.ss.tif
W/E/S/N -175.78/-175.71/27.81/27.88
ph-8101-8-07.01.00m.ss.tif
W/E/S/N -175.82/-175.74/27.76/27.82
ph-8101-8-08.01.00m.ss.tif
W/E/S/N -175.90/-175.82/27.74/27.81
ph-8101-8-09.01.00m.ss.tif
W/E/S/N -175.97/-175.89/27.74/27.80
ph-8101-8-10.01.00m.ss.tif
W/E/S/N -176.04/-175.96/27.74/27.80
ph-8101-8-11.01.00m.ss.tif
W/E/S/N -176.04/-175.96/27.80/27.86
- File_Decompression_Technique: none
- Digital_Transfer_Option:
-
- Online_Option:
-
- Computer_Contact_Information:
-
- Network_Address:
-
- Network_Resource_Name: http://www.soest.hawaii.edu/pibhmc
- Fees: None
- Metadata_Reference_Information:
-
- Metadata_Date: 20190605
- Metadata_Review_Date: 20090427
- 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
- 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
- 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_ID: 20090427063744
- CoRIS_Children: None
- CoRIS_Beginning_Date: 20000623
- CoRIS_Ending_Date: 20060720
- CoRIS_Metadata_Link:
-
https://www.coris.noaa.gov/metadata/records/html/cred_backscatter_ph_8101_1m.html
- CoRIS_Tracking_ID: 4026
Generated by mp version 2.9.48 on Wed Mar 27 10:50:15 2024