Short Citation
Office for Coastal Management, 2024: 2020 NOAA/OCM Multibeam Backscatter: Bayfield, WI, https://www.fisheries.noaa.gov/inport/item/64513.
Full Citation Examples

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.

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.
Bulk Download

GeoTIFF

Bulk download of data files in the original coordinate system.

Access Constraints:

None

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be aware that temporal changes may have occurred since this data set was collected and some parts of this data may no longer represent actual surface conditions.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.

environment, geoscientificInformation, imageryBaseMapsEarthCover, inlandWaters

No Child Items for this record.

Point of Contact
NOAA Office for Coastal Management (NOAA/OCM)
coastal.info@noaa.gov
(843) 740-1202
https://coast.noaa.gov

Metadata Contact
NOAA Office for Coastal Management (NOAA/OCM)
coastal.info@noaa.gov
(843) 740-1202
https://coast.noaa.gov

Geographic Area 1

-91.197222° W, -90.973827° E, 46.978675° N, 46.84883° S

Time Frame 1
2020-07-25 - 2020-08-05

First leg

Time Frame 2
2020-08-25 - 2020-09-02

Second leg

Time Frame 3
2020-09-16 - 2020-09-28

Third leg

Title:	2020 NOAA/OCM Multibeam Backscatter: Bayfield, WI
Short Name:	Bayfield2020_backscatter2m m9277
Status:	Completed
Creation Date:	2020
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

Theme Keywords

Thesaurus

Keyword

ISO 19115 Topic Category

environment

ISO 19115 Topic Category

geoscientificInformation

ISO 19115 Topic Category

imageryBaseMapsEarthCover

ISO 19115 Topic Category

inlandWaters

UNCONTROLLED

None

backscatter

None

Great Lakes

None

Lake Superior

None

multibeam

Spatial Keywords

Thesaurus

Keyword

Global Change Master Directory (GCMD) Location Keywords

CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA

Instrument Keywords

Thesaurus

Keyword

UNCONTROLLED

Global Change Master Directory (GCMD) Instrument Keywords

Earth Remote Sensing Instruments > Active Remote Sensing > Profilers/Sounders > Acoustic Sounders > ECHO SOUNDERS

Platform Keywords

Thesaurus

Keyword

UNCONTROLLED

Global Change Master Directory (GCMD) Instrument Keywords

In Situ Ocean-based Platforms > SHIPS > R/V Echo

Organization:	Office for Coastal Management
City:	Charleston
State/Province:	SC

Data Set Scope Code:	Data Set
Data Set Type:	Imagery
Maintenance Frequency:	None Planned
Data Presentation Form:	remote-sensing image
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

Data Steward

CC ID: 1056977

Date Effective From:	2021
Date Effective To:
Contact (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
URL:	https://coast.noaa.gov

Distributor

CC ID: 1056976

Date Effective From:	2021
Date Effective To:
Contact (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
URL:	https://coast.noaa.gov

Metadata Contact

CC ID: 1056978

Date Effective From:	2021
Date Effective To:
Contact (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
URL:	https://coast.noaa.gov

Point of Contact

CC ID: 1056979

Date Effective From:	2021
Date Effective To:
Contact (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
URL:	https://coast.noaa.gov

Currentness Reference:	Ground Condition

Extent Group 1

Extent Group 1 / Geographic Area 1

CC ID: 1317728

W° Bound:	-91.197222
E° Bound:	-90.973827
N° Bound:	46.978675
S° Bound:	46.84883

Extent Group 1 / Time Frame 1

CC ID: 1317725

Time Frame Type:	Range
Start:	2020-07-25
End:	2020-08-05
Description:	First leg

Extent Group 1 / Time Frame 2

CC ID: 1317726

Time Frame Type:	Range
Start:	2020-08-25
End:	2020-09-02
Description:	Second leg

Extent Group 1 / Time Frame 3

CC ID: 1317727

Time Frame Type:	Range
Start:	2020-09-16
End:	2020-09-28
Description:	Third leg

Spatial Representation

Representations Used

Grid:	Yes

Grid Representation 1

CC ID: 1057007

Dimension Count:

2

Cell Geometry:

Point

Transformation Parameters Available?:

Yes

Axis Dimension 1

Dimension Type:	Row
Size:	8339
Resolution Type:	Length
Resolution:	2.0 Meter

Axis Dimension 2

Dimension Type:	Column
Size:	7015
Resolution Type:	Length
Resolution:	2.0 Meter

Reference Systems

Reference System 1

CC ID: 1317723

Coordinate Reference System

CRS Type:

Projected

EPSG Code:

EPSG:6344

EPSG Name:

NAD83(2011) / UTM zone 15N

▾ See Full Coordinate Reference System Information

Datum Name:

NAD83 (National Spatial Reference System 2011)

Ellipsoid:

GRS 1980

Semimajor Axis:

6378137.0

Flattening Ratio:

298.257222101

Base CRS Name:

NAD83(2011)

Projection Name:

UTM zone 15N

Conversion Method:

Transverse Mercator

Parameter: Latitude of natural origin

Parameter Value:	0° 0' 0" N

Parameter: Longitude of natural origin

Parameter Value:	93° 0' 0" W

Parameter: Scale factor at natural origin

Parameter Value:	0.9996

Parameter: False easting

Parameter Value:	500000
Parameter Units:	metre

Parameter: False northing

Parameter Value:	0
Parameter Units:	metre

Axis: Easting

Order:	1
Abbreviation:	E
Units:	metre
Orientation:	east

Axis: Northing

Order:	2
Abbreviation:	N
Units:	metre
Orientation:	north

Security Class:	Unclassified
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.

Distribution 1

CC ID: 1056982

Start Date:	2021-04-09
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 Type (Deprecated):	Zip
Compression:	Zip

Distribution 2

CC ID: 1056983

Start Date:	2021-04-09
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 Type (Deprecated):	GeoTIFF
Distribution Format:	GeoTIFF

URL 1

CC ID: 1056973

URL:	https://coast.noaa.gov/
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 2

CC ID: 1056974

URL:	https://coast.noaa.gov/dataviewer/
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 3

CC ID: 1057012

URL:	https://coastalimagery.blob.core.windows.net/digitalcoast/WI_Bayfield_MB_Backscatter_2020_9277/20201116_NOAA_OCM_Bayfield_Peninsula_Hydrographic_Data_Processing_Report.pdf
Name:	Processing Report
URL Type:	Online Resource
File Resource Format:	pdf
Description:	Contractor Report

Description:	Esri ArcGIS 12.6.0.24783

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.
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.

Sources

Backscatter geotiff files

CC ID: 1317717

Contact Role Type:	Originator
Contact Type:	Organization
Contact Name:	Dave Evans and Associates

Process Steps

Process Step 1

CC ID: 1317718

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 Step 2

CC ID: 1317719

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).

Process Step 3

CC ID: 1317720

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

Item Type

Relationship Type

Title

Data Set (DS)

Cross Reference

2020 NOAA/OCM Multibeam Bathymetry: Bayfield, WI

Multibeam elevations from the same collection

Catalog Item ID:	64513
GUID:	gov.noaa.nmfs.inport:64513
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 Last Review Date:	2021-04-09
Metadata Review Frequency:	1 Year
Metadata Next Review Date:	2022-04-09

Summary

Distribution Information

Controlled Theme Keywords

Child Items

Contact Information

Extents

Item Identification

Keywords

Theme Keywords

Spatial Keywords

Instrument Keywords

Platform Keywords

Physical Location

Data Set Information

Support Roles

Data Steward

Distributor

Metadata Contact

Point of Contact

Extents

Extent Group 1

Extent Group 1 / Geographic Area 1

Extent Group 1 / Time Frame 1

Extent Group 1 / Time Frame 2

Extent Group 1 / Time Frame 3

Spatial Information

Spatial Representation

Representations Used

Grid Representation 1

Axis Dimension 1

Axis Dimension 2

Reference Systems

Reference System 1

Coordinate Reference System

Parameter: Latitude of natural origin

Parameter: Longitude of natural origin

Parameter: Scale factor at natural origin

Parameter: False easting

Parameter: False northing

Axis: Easting

Axis: Northing

Access Information

Distribution Information

Distribution 1

Distribution 2

URLs

URL 1

URL 2

URL 3

Technical Environment

Data Quality

Lineage

Sources

Backscatter geotiff files

Process Steps

Process Step 1

Process Step 2

Process Step 3

Related Items

Catalog Details