64513 Bayfield2020_backscatter2m m9277 Data Set Published / External 47842 Imagery Project Completed 2020 In July-September 2020, a hydrographic survey was conducted in three survey areas located on the western side of Bayfield Peninsula in southwestern Lake Superior. Survey operations took place over three legs: Leg 1 (7/25-8/5), Leg 2 (8/25-9/2), and Leg 3 (9/16-9/28). The survey platform was the Research Vessel (R/V) Echo, which was equipped with a Teledyne-Reson SeaBat 7125 multibeam echosounder for simultaneously acquiring bathymetry and acoustic backscatter imagery. Multibeam backscatter imagery mosaic (2 meter pixel resolution) from 2020 hydrographic survey of western Bayfield Peninsula in Lake Superior Theme ISO 19115 Topic Category environment Theme ISO 19115 Topic Category geoscientificInformation Theme ISO 19115 Topic Category imageryBaseMapsEarthCover Theme ISO 19115 Topic Category inlandWaters Spatial Global Change Master Directory (GCMD) Location Keywords CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA Theme Great Lakes Theme Lake Superior Theme backscatter Theme multibeam Instrument Global Change Master Directory (GCMD) Instrument Keywords Earth Remote Sensing Instruments > Active Remote Sensing > Profilers/Sounders > Acoustic Sounders > ECHO SOUNDERS Platform Global Change Master Directory (GCMD) Instrument Keywords In Situ Ocean-based Platforms > SHIPS > R/V Echo Office for Coastal Management Charleston SC Data Set Imagery None Planned remote-sensing image Any conclusions drawn from the analysis of this information are not the responsibility of NOAA, the Office for Coastal Management or its partners NOAA/OCM; Dave Evans and Associates Data Steward 2021 Organization NOAA Office for Coastal Management NOAA/OCM coastal.info@noaa.gov 2234 South Hobson Ave Charleston SC 29405-2413 (843) 740-1202 https://coast.noaa.gov NOAA Office for Coastal Management Home Page Online Resource Distributor 2021 Organization NOAA Office for Coastal Management NOAA/OCM coastal.info@noaa.gov 2234 South Hobson Ave Charleston SC 29405-2413 (843) 740-1202 https://coast.noaa.gov NOAA Office for Coastal Management Home Page Online Resource Metadata Contact 2021 Organization NOAA Office for Coastal Management NOAA/OCM coastal.info@noaa.gov 2234 South Hobson Ave Charleston SC 29405-2413 (843) 740-1202 https://coast.noaa.gov NOAA Office for Coastal Management Home Page Online Resource Point of Contact 2021 Organization NOAA Office for Coastal Management NOAA/OCM coastal.info@noaa.gov 2234 South Hobson Ave Charleston SC 29405-2413 (843) 740-1202 https://coast.noaa.gov NOAA Office for Coastal Management Home Page Online Resource Ground Condition -91.197222 -90.973827 46.978675 46.84883 Range 2020-07-25 2020-08-05 First leg Range 2020-08-25 2020-09-02 Second leg Range 2020-09-16 2020-09-28 Third leg Yes 2 Point Yes Row 8339 Length 2 Meter Column 7015 Length 2 Meter Projected EPSG:6344 NAD83(2011) / UTM zone 15N NAD83 (National Spatial Reference System 2011) GRS 1980 6378137 298.257222101 NAD83(2011) UTM zone 15N Transverse Mercator Latitude of natural origin 0° 0' 0" N Longitude of natural origin 93° 0' 0" W Scale factor at natural origin 0.9996 False easting 500000 metre False northing 0 metre 1 Easting E metre east 2 Northing N metre north Unclassified Data is available online for bulk or custom downloads None Users should be aware that temporal changes may have occurred since this data set was collected and some parts of this data may no longer represent actual surface conditions. Users should not use this data for critical applications without a full awareness of its limitations. https://coast.noaa.gov/dataviewer/#/imagery/search/where:ID=9277/details/9277 2021 Organization NOAA Office for Coastal Management Customized Download Create custom data files by choosing data area, map projection, file format, etc. A new metadata will be produced to reflect your request using this record as a base. Zip Zip https://coastalimagery.blob.core.windows.net/digitalcoast/WI_Bayfield_MB_Backscatter_2020_9277/index.html 2021 Organization NOAA Office for Coastal Management Bulk Download Bulk download of data files in the original coordinate system. GeoTIFF GeoTIFF https://coast.noaa.gov/ NOAA's Office for Coastal Management (OCM) website Online Resource HTML Information on the NOAA Office for Coastal Management (OCM) https://coast.noaa.gov/dataviewer/ NOAA's Office for Coastal Management (OCM) Data Access Viewer (DAV) Online Resource HTML The Data Access Viewer (DAV) allows a user to search for and download elevation, imagery, and land cover data for the coastal U.S. and its territories. The data, hosted by the NOAA Office for Coastal Management, can be customized and requested for free download through a checkout interface. An email provides a link to the customized data, while the original data set is available through a link within the viewer. https://coastalimagery.blob.core.windows.net/digitalcoast/WI_Bayfield_MB_Backscatter_2020_9277/20201116_NOAA_OCM_Bayfield_Peninsula_Hydrographic_Data_Processing_Report.pdf Processing Report Online Resource pdf Contractor Report Esri ArcGIS 12.6.0.24783 Data were examined for completeness. Gaps where no backscatter data was recorded are shown in figure 4 of the processing report. Only a very small fraction of the area has gaps. The backscatter mosaic was then reviewed manually for motion artifacts and/or brightness offsets. Manual editing was performed to adjust brightness values between adjacent survey lines and/or survey days using the “Head Bias” tool in QPS FMGT software. Backscatter geotiff files Organization Dave Evans and Associates Originator 1 In July-September 2020, a hydrographic survey was conducted in three survey areas located on the western side of Bayfield Peninsula in southwestern Lake Superior. Survey operations took place over three legs: Leg 1 (7/25-8/5), Leg 2 (8/25-9/2), and Leg 3 (9/16-9/28). The survey platform was the Research Vessel (R/V) Echo, which was equipped with a Teledyne-Reson SeaBat 7125 multibeam echosounder for simultaneously acquiring bathymetry and acoustic backscatter imagery. Backscatter imagery processing was conducted using Quality Positioning Systems (QPS) Fledermaus Geocoder Toolbox (FMGT) software (version 7.9.3). 2 Processed bathymetry data files were exported from CARIS HIPS as Generic Sensor Format (GSF) files. The FMGT workflow paired each native sonar file (Teledyne-Reson s7k format) with its processed GSF file, thus incorporating corrected position and motion data. A beam pattern correction was computed and applied to remove angular bias from the backscatter imagery. Angle Varying Gain (AVG) was applied using the standard “Flat” algorithm and window size of 300 pings. A backscatter imagery mosaic was produced using standard line weighting procedures. The backscatter mosaic was then reviewed manually for motion artifacts and/or brightness offsets. Manual editing was performed to adjust brightness values between adjacent survey lines and/or survey days using the “Head Bias” tool in QPS FMGT software. After the completion of backscatter data processing and quality review, the backscatter imagery was exported in 2m pixel resolution. Backscatter products are referenced to NAD83 UTM Zone 15 North with horizontal units in meters. Backscatter intensity is shown in logarithmic units of decibels (dB). 3 Data were added to the Digital Coast Data Access Viewer. The data files were unchanged in this process. 2021-04-09T00:00:00 Organization NOAA Office for Coastal Management NOAA/OCM coastal.info@noaa.gov 2234 South Hobson Ave Charleston SC 29405-2413 (843) 740-1202 https://coast.noaa.gov NOAA Office for Coastal Management Home Page Online Resource Backscatter geotiff files 64386 Data Set Cross Reference Multibeam elevations from the same collection gov.noaa.nmfs.inport:64513 Kirk Waters 2021-04-09T14:03:27 Brianna Key 2024-02-05T17:15:41 2024-02-05 Office for Coastal Management OCM 1002 Public No No 2021-04-09 1 Year 2022-04-09