CRED Simrad em120 multibeam backscatter data from portions of the banktop and bank edge environments at Maro Reef, Hawaii, USA with 30 meter resolution in netCDF format
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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: 200703
- Title:
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CRED Simrad em120 multibeam backscatter data from portions of the banktop and bank edge environments at Maro Reef, Hawaii, USA with 30 meter resolution in netCDF format
- Geospatial_Data_Presentation_Form: digital data
- Online_Linkage:
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http://www.soest.hawaii.edu/pibhmc/cms/data-by-location/northwest-hawaiian-islands/maro-reef/backscatter/
- Description:
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- Abstract:
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Multibeam backscatter imagery extracted from gridded bathymetry of Maro Reef, Northwestern Hawaiian Islands, USA.
These data provide coverage between 20 and 5000 meters. The backscatter dataset includes data collected using Simrad EM300, Simrad EM3002d,
Simrad EM120, and Reson 8101 multibeam sonars. The sonars frequencies are 30 kHz, 300 kHz, 12 kHz, and 240 kHz respectively and the
backscatter data from each sonar are processed and gridded separately. These metadata are for the 30 m grid cell size Simrad em120 multibeam
backscatter data only.
- Purpose:
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The netCDF grid of backscatter imagery was 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 Kilo Moana, a 186' United States
Navy owned research vessel operated by the University of Hawaii. The R/V Kilo
Moana's survey sensors include a 12 kHz Simrad EM120 sonar and a 95 kHz Simrad EM1002
sonar, which provide bathymetry and imagery data, a TSS/Applanix POS/MV Model 320,
which measures position, velocity, attitude and heading, and a Sippican MK-21/PC based
XBT system plus a Seabird SBE 9/11 CTD both of which measured sound velocity profiles.
Specific equipment configurations are documented in metadata from cruise: KM0206.
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: 20021022
- Ending_Date: 20021116
- 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: -171.372
- East_Bounding_Coordinate: -170.022
- North_Bounding_Coordinate: 25.754
- South_Bounding_Coordinate: 24.987
- 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 > Maro Reef (25N170W0001)
- Place_Keyword:
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COUNTRY/TERRITORY > United States of America > Hawaii > Honolulu > Maro Reef (25N170W0001)
- Place:
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- Place_Keyword_Thesaurus: None
- Place_Keyword: Maro Reef
- Place_Keyword: Hawaii
- Place_Keyword: Northwestern Hawaiian Islands
- Place_Keyword: United States of America
- Place:
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- Place_Keyword_Thesaurus: CoRIS Region
- Place_Keyword: NWHI
- 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.
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
- 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/maro-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/maro-em120-bs_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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netCDF grid file created using MB System 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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Multibeam data were collected using Simrad Neptune software. Multibeam data were processed
using MB-System, an open source software package for the processing and display of bathymetry
and backscatter imagery data. The data were destriped using mbfilter, a grazing angle correction
was calculated and appplied to the data using mbbackangleold and mbanglecorrect, and the data were
gridded using mbmosaic. More information about MB-System can be found at:
www.ldeo.columbia.edu/res/pi/MB-System/
- Process_Date: 200211
- 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: 2841
- Column_Count: 4519
- 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: 2
- Transverse_Mercator:
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- Scale_Factor_at_Central_Meridian: 0.9996
- Longitude_of_Central_Meridian: -171
- 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: 30
- Ordinate_Resolution: 30
- 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:
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Sidescan data within a Simrad 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:
-
- 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
- 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:
-
- 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 MB-System sofware program mbmosaic. More information
about netCDF files can be found at at http://www.soest.hawaii.edu/gmt/ and
http://www.unidata.ucar.edu/software/netcdf/.
- File_Decompression_Technique: none
- Digital_Transfer_Option:
-
- 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/maro-reef/backscatter/
- Fees: None
- Metadata_Reference_Information:
-
- Metadata_Date: 20190605
- 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:
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- CoRIS_ID: 20090504070150
- CoRIS_Children: None
- CoRIS_Beginning_Date: 20021022
- CoRIS_Ending_Date: 20021116
- CoRIS_Metadata_Link:
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https://www.coris.noaa.gov/metadata/records/html/cred_backscatter_maro_30m_grd.html
- CoRIS_Tracking_ID: 2566
Generated by mp version 2.9.48 on Wed Mar 27 10:50:14 2024