Acoustic Backscatter
Data Set (DS) | NMFS Office Of Habitat Conservation (OHC)GUID: gov.noaa.nmfs.inport:29606 | Updated: October 17, 2023 | Published / External
Item Identification
Title: | Acoustic Backscatter |
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Short Name: | Acoustic Backscatter |
Status: | In Work |
Abstract: |
The Acoustic Backscatter data sets are GIS raster images of the range of backscatter amplitudes projected onto a colormap from multibeam echosounder amplitude data or side scan sonar amplitude data. These amplitude data from individual datafiles are mosaicked into a single raster. |
Purpose: |
The purpose of the acoustic backscatter data is to provide the user with a overall map of the area acoustically surveyed and to depict the survey in a manner such that the user may discern seabed substrates, habitats, and features. |
Keywords
Theme Keywords
Thesaurus | Keyword |
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UNCONTROLLED | |
None | Acoustic Survey |
None | Backscatter |
None | Chesapeake Bay |
None | Habitat Mapping |
None | Seafloor Mapping |
None | Side Scan Sonar |
Physical Location
Organization: | NMFS Office Of Habitat Conservation |
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City: | Annapolis |
State/Province: | MD |
Location Description: |
OHC Chesapeake Bay Office |
Data Set Information
Data Set Scope Code: | Data Set |
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Data Set Type: | GIS dataset of raster files |
Maintenance Frequency: | None Planned |
Data Presentation Form: | Image (digital) |
Data Set Credit: | NOAA Chesapeake Bay Office |
Support Roles
Data Steward
Date Effective From: | 2011 |
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Date Effective To: | |
Contact (Person): | Lazar, Jay V |
Address: |
410 Severn Ave Annapolis, MD |
Email Address: | jay.lazar@noaa.gov |
Phone: | 410-375-0899 |
Fax: | 410-267-5660 |
Distributor
Date Effective From: | 2011 |
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Date Effective To: | |
Contact (Person): | Lazar, Jay V |
Address: |
410 Severn Ave Annapolis, MD |
Email Address: | jay.lazar@noaa.gov |
Phone: | 410-375-0899 |
Fax: | 410-267-5660 |
Metadata Contact
Date Effective From: | 2011 |
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Date Effective To: | |
Contact (Person): | Lazar, Jay V |
Address: |
410 Severn Ave Annapolis, MD |
Email Address: | jay.lazar@noaa.gov |
Phone: | 410-375-0899 |
Fax: | 410-267-5660 |
Point of Contact
Date Effective From: | 2011 |
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Date Effective To: | |
Contact (Person): | Lazar, Jay V |
Address: |
410 Severn Ave Annapolis, MD |
Email Address: | jay.lazar@noaa.gov |
Phone: | 410-375-0899 |
Fax: | 410-267-5660 |
Extents
Currentness Reference: | Collected Data is current, Synthesized Products are as current as the data behind them |
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Extent Group 1
Extent Description: |
The Chesapeake Bay is the Geographical Extent. |
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Extent Group 1 / Geographic Area 1
W° Bound: | -77.53333333333 | |
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E° Bound: | -75.45555555556 | |
N° Bound: | 39.69166666667 | |
S° Bound: | 36.84444444444 | |
Description |
The Chesapeake Bay and it's tidally influenced waters. |
Extent Group 2
Extent Description: |
Temporal Extent begins at the inception of the Chesapeake Bay Benthic Habitat Program. |
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Extent Group 2 / Time Frame 1
Time Frame Type: | Continuing |
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Start: | 2005 |
Description: |
Chesapeake Bay Benthic Habitat Data/Products collection/synthesis began in 2005 in continue to the present. Products can incorporate external datasets that originate prior to the 2005 start date of our program. |
Access Information
Security Class: | Unclassified |
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Data Access Procedure: |
To access these data, visit http://www.habitat.noaa.gov/chesapeakebay/gis/ |
Data Access Constraints: |
There are no constraints to the access of these data. |
Data Use Constraints: |
These data are constrained by uses for navigation. These data will not be used for navigation. |
Distribution Information
Distribution 1
Download URL: | http://www.habitat.noaa.gov/chesapeakebay/gis/acoustic_backscatter_database |
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Distributor: | |
File Name: | *.tif/*.tfw |
Description: |
These files are geo-referenced tif images of the mosaicked backscatter data. |
File Type (Deprecated): | GeoTIFF, .tif |
Distribution Format: | GeoTIFF |
URLs
URL 1
URL: | http://www.habitat.noaa.gov/chesapeakebay/gis/ |
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URL Type: |
Online Resource
|
File Resource Format: | GIS formats |
Description: |
The URL is to a public FTP maintained by NOAA Office of Habitat Conservation. |
Data Quality
Quality Control Procedures Employed: |
A Saturation Monitor or Voltage display is observed for the amplitude values to determine whether the dynamic range of the signal is being limited. |
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Data Management
Have Resources for Management of these Data Been Identified?: | No |
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Approximate Percentage of Budget for these Data Devoted to Data Management: | Unknown |
Do these Data Comply with the Data Access Directive?: | No |
Is Access to the Data Limited Based on an Approved Waiver?: | No |
Approximate Delay Between Data Collection and Dissemination: | 30 days |
If Delay is Longer than Latency of Automated Processing, Indicate Under What Authority Data Access is Delayed: |
NA |
Actual or Planned Long-Term Data Archive Location: | NCEI-CO |
Approximate Delay Between Data Collection and Archiving: | 180 days |
How Will the Data Be Protected from Accidental or Malicious Modification or Deletion Prior to Receipt by the Archive?: |
Storage redundancy is the protocol in house. |
Lineage
Lineage Statement: |
Raw backscatter data recorded from multibeam intensity and side scan sonar amplitudes were normalized through either Caris SIPS, Fledermaus, or SonarWizMap processing software. The processed data files were mosaicked into a single image and exported as a GEOTiff. |
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Catalog Details
Catalog Item ID: | 29606 |
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GUID: | gov.noaa.nmfs.inport:29606 |
Metadata Record Created By: | Jay V Lazar |
Metadata Record Created: | 2015-12-07 16:02+0000 |
Metadata Record Last Modified By: | SysAdmin InPortAdmin |
Metadata Record Last Modified: | 2023-10-17 16:12+0000 |
Metadata Record Published: | 2016-03-11 |
Owner Org: | OHC |
Metadata Publication Status: | Published Externally |
Do Not Publish?: | N |
Metadata Last Review Date: | 2016-03-11 |
Metadata Review Frequency: | 1 Year |
Metadata Next Review Date: | 2017-03-11 |