2020 NOAA/OCM Multibeam Backscatter: Bayfield, WI
Office for Coastal Management
Data Set
(DS)
| ID: 64513
| Published / External
Created: 2021-04-09
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Last Modified: 2024-02-05
Project (PRJ) | ID: 47842
ID: 64513
Data Set (DS)
* Discovery• First Pass
» Metadata Rubric
Item Identification
* » Title | 2020 NOAA/OCM Multibeam Backscatter: Bayfield, WI |
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Short Name | Bayfield2020_backscatter2m m9277 |
* Status | Completed |
Creation Date | 2020 |
Revision Date | |
• Publication Date | |
* » Abstract |
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. |
* Purpose |
Multibeam backscatter imagery mosaic (2 meter pixel resolution) from 2020 hydrographic survey of western Bayfield Peninsula in Lake Superior |
Notes | |
Other Citation Details | |
• Supplemental Information | |
DOI (Digital Object Identifier) | |
DOI Registration Authority | |
DOI Issue Date |
Keywords
Theme Keywords
Thesaurus | Keyword |
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ISO 19115 Topic Category | environment |
ISO 19115 Topic Category | geoscientificInformation |
ISO 19115 Topic Category | imageryBaseMapsEarthCover |
ISO 19115 Topic Category | inlandWaters |
None | backscatter |
None | Great Lakes |
None | Lake Superior |
None | multibeam |
Temporal Keywords
Thesaurus | Keyword |
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* Spatial Keywords
Thesaurus | Keyword |
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Global Change Master Directory (GCMD) Location Keywords | CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA |
Stratum Keywords
Thesaurus | Keyword |
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Instrument Keywords
Thesaurus | Keyword |
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Global Change Master Directory (GCMD) Instrument Keywords | Earth Remote Sensing Instruments > Active Remote Sensing > Profilers/Sounders > Acoustic Sounders > ECHO SOUNDERS |
Platform Keywords
Thesaurus | Keyword |
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Global Change Master Directory (GCMD) Instrument Keywords | In Situ Ocean-based Platforms > SHIPS > R/V Echo |
Physical Location
• » Organization | Office for Coastal Management |
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• » City | Charleston |
• » State/Province | SC |
• Country | |
• » Location Description |
Data Set Information
* Data Set Scope Code | Data Set |
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• Data Set Type | Imagery |
• Maintenance Frequency | None Planned |
Maintenance Note | |
» Data Presentation Form | remote-sensing image |
• Entity Attribute Overview | |
Entity Attribute Detail Citation | |
Entity Attribute Detail URL | |
Distribution Liability |
Any conclusions drawn from the analysis of this information are not the responsibility of NOAA, the Office for Coastal Management or its partners |
Data Set Credit | NOAA/OCM; Dave Evans and Associates |
Support Roles
* » Support Role | Data Steward |
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* » Date Effective From | 2021 |
Date Effective To | |
Organization | NOAA Office for Coastal Management (NOAA/OCM) |
Address |
2234 South Hobson Ave Charleston, SC 29405-2413 |
Email Address | coastal.info@noaa.gov |
Phone | (843) 740-1202 |
Fax | |
Mobile | |
URL | https://coast.noaa.gov |
Business Hours | |
Contact Instructions |
* » Support Role | Distributor |
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* » Date Effective From | 2021 |
Date Effective To | |
Organization | NOAA Office for Coastal Management (NOAA/OCM) |
Address |
2234 South Hobson Ave Charleston, SC 29405-2413 |
Email Address | coastal.info@noaa.gov |
Phone | (843) 740-1202 |
Fax | |
Mobile | |
URL | https://coast.noaa.gov |
Business Hours | |
Contact Instructions |
* » Support Role | Metadata Contact |
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* » Date Effective From | 2021 |
Date Effective To | |
Organization | NOAA Office for Coastal Management (NOAA/OCM) |
Address |
2234 South Hobson Ave Charleston, SC 29405-2413 |
Email Address | coastal.info@noaa.gov |
Phone | (843) 740-1202 |
Fax | |
Mobile | |
URL | https://coast.noaa.gov |
Business Hours | |
Contact Instructions |
* » Support Role | Point of Contact |
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* » Date Effective From | 2021 |
Date Effective To | |
Organization | NOAA Office for Coastal Management (NOAA/OCM) |
Address |
2234 South Hobson Ave Charleston, SC 29405-2413 |
Email Address | coastal.info@noaa.gov |
Phone | (843) 740-1202 |
Fax | |
Mobile | |
URL | https://coast.noaa.gov |
Business Hours | |
Contact Instructions |
* » Support Role | |
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* » Date Effective From | |
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* » Contact | |
* Contact Instructions |
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* » Date Effective From | |
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* Contact Instructions |
Extents
Currentness Reference | Ground Condition |
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Extent Group 1
Extent Description |
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Extent Group 1 / Geographic Area 1
* » W° Bound | -91.197222 |
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* » E° Bound | -90.973827 |
* » N° Bound | 46.978675 |
* » S° Bound | 46.84883 |
* » Description |
Extent Group 1 / Vertical Extent
EPSG Code | |
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Vertical Minimum | |
Vertical Maximum |
Extent Group 1 / Time Frame 1
* » Time Frame Type | Range |
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* » Start | 2020-07-25 |
End | 2020-08-05 |
Alternate Start As Of Info | |
Alternate End As Of Info | |
Description |
First leg |
Extent Group 1 / Time Frame 2
* » Time Frame Type | Range |
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* » Start | 2020-08-25 |
End | 2020-09-02 |
Alternate Start As Of Info | |
Alternate End As Of Info | |
Description |
Second leg |
Extent Group 1 / Time Frame 3
* » Time Frame Type | Range |
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* » Start | 2020-09-16 |
End | 2020-09-28 |
Alternate Start As Of Info | |
Alternate End As Of Info | |
Description |
Third leg |
Spatial Information
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Spatial Representation
Grid Representation Used? | Yes |
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Stereo Model Representation Used? | |
Video Representation Used? |
Grid Representation
Dimension Count | 2 | ||||||||||||
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Cell Geometry | Point | ||||||||||||
Transformation Parameters Available? | Yes | ||||||||||||
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Vector Representation
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Reference Systems
Reference System
EPSG Code | EPSG:6344 | ||||||||||||||||||||||||||||
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Access Information
Data License | |
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Data License URL | |
Data License Statement | |
* » Security Class | Unclassified |
* Security Classification System | |
Security Handling Description | |
• Data Access Policy | |
» Data Access Procedure |
Data is available online for bulk or custom downloads |
• » Data Access Constraints |
None |
• Data Use Constraints |
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. |
Metadata Access Constraints | |
Metadata Use Constraints |
Distribution Information
Start Date | 2021-04-09 |
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End Date | Present |
» Download URL | https://coast.noaa.gov/dataviewer/#/imagery/search/where:ID=9277/details/9277 |
Distributor | NOAA Office for Coastal Management (NOAA/OCM) (2021 - Present) |
File Name | Customized Download |
Description |
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. |
File Date/Time | |
File Type (Deprecated) | Zip |
Distribution Format | |
File Size | |
Application Version | |
Compression | Zip |
Review Status |
Start Date | 2021-04-09 |
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End Date | Present |
» Download URL | https://coastalimagery.blob.core.windows.net/digitalcoast/WI_Bayfield_MB_Backscatter_2020_9277/index.html |
Distributor | NOAA Office for Coastal Management (NOAA/OCM) (2021 - Present) |
File Name | Bulk Download |
Description |
Bulk download of data files in the original coordinate system. |
File Date/Time | |
File Type (Deprecated) | GeoTIFF |
Distribution Format | GeoTIFF |
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URLs
URL | https://coast.noaa.gov/ |
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Name | NOAA's Office for Coastal Management (OCM) website |
URL Type | Online Resource |
File Resource Format | HTML |
Description |
Information on the NOAA Office for Coastal Management (OCM) |
URL | https://coast.noaa.gov/dataviewer/ |
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Name | NOAA's Office for Coastal Management (OCM) Data Access Viewer (DAV) |
URL Type | Online Resource |
File Resource Format | HTML |
Description |
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. |
URL | https://coastalimagery.blob.core.windows.net/digitalcoast/WI_Bayfield_MB_Backscatter_2020_9277/20201116_NOAA_OCM_Bayfield_Peninsula_Hydrographic_Data_Processing_Report.pdf |
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Name | Processing Report |
URL Type | Online Resource |
File Resource Format | |
Description |
Contractor Report |
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Activity Log
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Issues
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Technical Environment
Description |
Esri ArcGIS 12.6.0.24783 |
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Data Quality
Representativeness | |
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Accuracy | |
Analytical Accuracy | |
Horizontal Positional Accuracy | |
Vertical Positional Accuracy | |
Quantitation Limits | |
Bias | |
Comparability | |
Completeness Measure |
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. |
Precision | |
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Completeness Report | |
Conceptual Consistency | |
» Quality Control Procedures Employed |
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. |
Data Management
» Have Resources for Management of these Data Been Identified? | |
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» Approximate Percentage of Budget for these Data Devoted to Data Management | |
» Do these Data Comply with the Data Access Directive? | |
» Is Access to the Data Limited Based on an Approved Waiver? | |
» If Distributor (Data Hosting Service) is Needed, Please Indicate | |
» Approximate Delay Between Data Collection and Dissemination | |
» If Delay is Longer than Latency of Automated Processing, Indicate Under What Authority Data Access is Delayed |
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» Actual or Planned Long-Term Data Archive Location | |
» If World Data Center or Other, Specify | |
» If To Be Determined, Unable to Archive, or No Archiving Intended, Explain |
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» Approximate Delay Between Data Collection and Archiving | |
» How Will the Data Be Protected from Accidental or Malicious Modification or Deletion Prior to Receipt by the Archive? |
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Lineage
» Lineage Statement |
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Sources
Citation Title | Backscatter geotiff files |
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Contact Role Type | Originator |
Contact Type | Organization |
Contact Name | Dave Evans and Associates |
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Process Steps
Process Step Number | 1 |
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» Description |
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). |
Process Date/Time | |
Process Contact | |
Phone (Voice) | |
Email Address | |
Source |
Process Step Number | 2 |
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» Description |
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). |
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Source |
Process Step Number | 3 |
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» Description |
Data were added to the Digital Coast Data Access Viewer. The data files were unchanged in this process. |
Process Date/Time | 2021-04-09 00:00:00 |
Process Contact | NOAA Office for Coastal Management (NOAA/OCM) |
Phone (Voice) | (843) 740-1202 |
Email Address | coastal.info@noaa.gov |
Source | Backscatter geotiff files |
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Acquisition Information
Instruments
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FAQs
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Child Items
Rubric scores updated every 15m
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Related Items
Item Type | Relationship Type | Title |
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Data Set (DS) | Cross Reference |
2020 NOAA/OCM Multibeam Bathymetry: Bayfield, WI Multibeam elevations from the same collection |
Catalog Details
Catalog Item ID | 64513 |
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Metadata Record Created By | Kirk Waters |
Metadata Record Created | 2021-04-09 14:03+0000 |
Metadata Record Last Modified By | Brianna Key |
» Metadata Record Last Modified | 2024-02-05 17:15+0000 |
Metadata Record Published | 2024-02-05 |
Owner Org | OCM |
Metadata Publication Status | Published Externally |
Do Not Publish? | N |
Metadata Workflow State | Published / External |
Metadata Last Review Date | 2021-04-09 |
Metadata Review Frequency | 1 Year |
Metadata Next Review Date | 2022-04-09 |
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