Search Help Show/Hide Menu
Summary
Item Identification
Keywords
Physical Location
Data Set Info
Support Roles
Extents
Access Info
Distribution Info
Tech Environment
Data Quality
Data Management
Lineage
Catalog Details

Summary

Short Citation
Alaska Fisheries Science Center, 2024: AFSC/RACE/GAP/McConnaughey: South Arctic Reconnaissance-2012-QINsy, https://www.fisheries.noaa.gov/inport/item/32492.
Full Citation Examples

Abstract

A custom designed Klein 7180 towed sonar was deployed from the NOAA Ship FAIRWEATHER to determine its value of acoustic backscatter as a habitat defining character. A Sonardyne Fusion USBL system was used to estimate underwater positioning of the towfish using an omnidirectional Wideband submini beacon operating in external trigger mode. Navigation data were logged in QINSy and exported into a text file. The towfish positions were then smoothed in Matlab using a custom script that implemented a weighted Hamming filter, using a window of 11 data points. These points represent the smoothed USBL navigation data for the Klein 7180 towfish during the Arctic reconnaissance transit from Dutch Harbor to Kotzebue. These smoothed towfish navigation data, however, will NOT ultimately be reinserted back into the sonar files for mosaicking and analysis. Rather, another navigation smoothing routine will be used for the final product.

Distribution Information

Child Items

No Child Items for this record.

Contact Information

Point of Contact
Bob McConnaughey
bob.mcconnaughey@noaa.gov

Metadata Contact
Steve Intelmann
steve.intelmann@noaa.gov
(206) 526-4157

Extents

Geographic Area 1

-175.318433° W, -165.798705° E, 61.404316° N, 12.068817° S

Time Frame 1
2012-08-02 - 2012-08-04

Item Identification

Title: AFSC/RACE/GAP/McConnaughey: South Arctic Reconnaissance-2012-QINsy
Status: Completed
Publication Date: 2015-09-09
Abstract:

A custom designed Klein 7180 towed sonar was deployed from the NOAA Ship FAIRWEATHER to determine its value of acoustic backscatter as a habitat defining character. A Sonardyne Fusion USBL system was used to estimate underwater positioning of the towfish using an omnidirectional Wideband submini beacon operating in external trigger mode. Navigation data were logged in QINSy and exported into a text file. The towfish positions were then smoothed in Matlab using a custom script that implemented a weighted Hamming filter, using a window of 11 data points. These points represent the smoothed USBL navigation data for the Klein 7180 towfish during the Arctic reconnaissance transit from Dutch Harbor to Kotzebue. These smoothed towfish navigation data, however, will NOT ultimately be reinserted back into the sonar files for mosaicking and analysis. Rather, another navigation smoothing routine will be used for the final product.

Purpose:

The broad scope of the Essential Fish Habitat (EFH) mandate requires an efficient process for describing and mapping the habitat needs of federally managed species. For example, research indicates surficial sediments affect the distribution and abundance of many groundfish species, yet traditional sampling with grabs and cores is impractical over areas as large as the Bering Sea shelf. Acoustic tools are suitable for large-scale surveying and show great promise as a substitute for direct-sampling methods, but they have not been proven useful for EFH purposes. Acoustic seafloor surveys using different sonar systems were conducted along strong gradients of groundfish abundance, as determined from many years of RACE bottom trawl survey catches at fixed stations. Ultimately, the value of acoustic backscatter as a habitat defining character will be judged based on the statistical association between normalized backscatter and fish density. The benefits and costs of the different acoustic systems will be compared with data from multiple passes along the survey tracklines. Sediment samples, video and infauna collected along each trackline will provide additional biological and geological information for the analyses. Immediately following the Fishpac project during the summer of 2012, a single trackline was made between Dutch Harbor and Kotzebue Sound and various types of data were collected along the transit to get a glimpse at the seafloor habitat along the way.

Notes:

Loaded by FGDC Metadata Uploader, batch 7099, 09-22-2015 16:56

The following FGDC sections are not currently supported in InPort, but were preserved and will be included in the FGDC export:

- Spatial Reference Information (FGDC:spref),

- Spatial Data Organization Information (FGDC:spdoinfo)

Keywords

Theme Keywords

Thesaurus Keyword
UNCONTROLLED
None navigation
None side scan sonar

Physical Location

Organization: Alaska Fisheries Science Center
City: Seattle
State/Province: WA
Country: USA

Data Set Information

Data Set Scope Code: Data Set
Maintenance Frequency: None Planned
Data Presentation Form: Map (digital)

Support Roles

Data Steward

CC ID: 320592
Date Effective From: 2015
Date Effective To:
Contact (Person): McConnaughey, Bob
Email Address: bob.mcconnaughey@noaa.gov

Distributor

CC ID: 320593
Date Effective From: 2015
Date Effective To:
Contact (Organization): Alaska Fisheries Science Center (AFSC)
Address: 7600 Sand Point Way N.E., Building 4
Seattle, WA 98115
USA
Email Address: afsc.webmaster@noaa.gov
Phone: (206) 526-4000
Fax: (206) 526-4004
URL: https://www.fisheries.noaa.gov/about/alaska-fisheries-science-center
Business Hours: 0700-1700 Pacific Time

Metadata Contact

CC ID: 320590
Date Effective From: 2015-09-22
Date Effective To:
Contact (Person): Intelmann, Steve
Address: 7600 Sand Point Way N.E., Building 4
Seattle, WA 98115
USA
Email Address: steve.intelmann@noaa.gov
Phone: (206) 526-4157
Fax: (206) 526-6723

Point of Contact

CC ID: 320591
Date Effective From: 2015
Date Effective To:
Contact (Person): McConnaughey, Bob
Email Address: bob.mcconnaughey@noaa.gov

Extents

Currentness Reference: 3 day transit

Extent Group 1

Extent Group 1 / Geographic Area 1

CC ID: 320596
W° Bound: -175.318433
E° Bound: -165.798705
N° Bound: 61.404316
S° Bound: 12.068817

Extent Group 1 / Time Frame 1

CC ID: 320595
Time Frame Type: Range
Start: 2012-08-02
End: 2012-08-04

Access Information

Security Class: Unclassified
Data Access Procedure:

unknown

Data Access Constraints:

None

Data Use Constraints:

None

Metadata Use Constraints:

The United States Government shall not be held liable for improper or incorrect use of data described and/or contained herein. These data and related graphics are not legal documents and are not intended to be used as such. The Alaska Fisheries Science Center gives no warranty, expressed or implied, as to the accuracy, reliability, or completeness of these data. Spatial information may not meet National Map Accuracy Standards. The information contained in these data is dynamic and may change over time. Original data were compiled from various sources. The data are not better than the original sources from which they were derived. It is the responsibility of the data user to use the data appropriately and consistent within the limitations of geospatial data in general and these data in particular. It is strongly recommended that these data are directly acquired from an Alaska Fisheries Science Center server and not indirectly through other sources which may have changed the data in some way. Although these data have been used (processed) successfully on a computer system at the Alaska Fisheries Science Center, no warranty expressed or implied is made regarding the utility of the data on another system or for general or scientific purposes, nor shall the act of distribution constitute any such warranty. This disclaimer applies both to individual use of the data and aggregate use with other data.

Distribution Information

Distribution 1

CC ID: 320602
Download URL: https://access.afsc.noaa.gov/data-zips/32492_GAP_2012_Arctic-2012-QINSy.zip
Distributor:
File Type (Deprecated): Zip
Compression: Zip

Technical Environment

Description:

Microsoft Windows 7 Version 6.1 (Build 7601) Service Pack 1; Esri ArcGIS 10.3.0.4322

Data Quality

Quality Control Procedures Employed:

see Process Steps

Data Management

Have Resources for Management of these Data Been Identified?: No
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
If Distributor (Data Hosting Service) is Needed, Please Indicate: Yes
Approximate Delay Between Data Collection and Dissemination: Unknown
If Delay is Longer than Latency of Automated Processing, Indicate Under What Authority Data Access is Delayed:

no delay

Actual or Planned Long-Term Data Archive Location: NCEI-MD
Approximate Delay Between Data Collection and Archiving: unknown
How Will the Data Be Protected from Accidental or Malicious Modification or Deletion Prior to Receipt by the Archive?:

IT Security and Contingency Plan for the system establishes procedures and applies to the functions, operations, and resources necessary to recover and restore data as hosted in the Western Regional Support Center in Seattle, Washington, following a disruption.

Lineage

Process Steps

Process Step 1

CC ID: 320601
Description:

A Klein 7180 towfish was operated at the 500m-range scale and towed at roughly 7-8 knots from the NOAA Ship FAIRWEATHER while attempting to maintain a constant altitude of roughly 50 percent water depth. A Sonardyne Fusion USBL system was used to estimate underwater positioning of the towfish using an omnidirectional Wideband submini beacon operating in external trigger mode. A DWS fiber-optic winch was used to deploy and retrieve the towfish and positioning was obtained by USBL. An Applanix POS/MV was used to reference the Sonardyne XYZ coordinates which were controlled in QINSy. The REDAS driver in QINSy was used to pass both ship and towfish position to Sonarpro, which logged the sonar packets in SDF2 format. A T-Count was also used to capture cable out information and was also captured by QINSy. Navigation data were exported from QINSy into a text file. The towfish positions were then smoothed in Matlab using a custom script that implemented a weighted Hamming filter, using a window of 11 data points. The smoothed towfish navigation data were NOT reinserted back in to the raw sonar files for mosaicking. Point data from the text file were finally imported into ArcGIS.

Process Date/Time: 2012-10-11 00:00:00

Catalog Details

Catalog Item ID: 32492
GUID: gov.noaa.nmfs.inport:32492
Metadata Record Created By: Theresa A Smith
Metadata Record Created: 2016-04-20 12:17+0000
Metadata Record Last Modified By: SysAdmin InPortAdmin
Metadata Record Last Modified: 2024-01-15 12:08+0000
Metadata Record Published: 2019-05-31
Owner Org: AFSC
Metadata Publication Status: Published Externally
Do Not Publish?: N
Metadata Last Review Date: 2019-05-31
Metadata Review Frequency: 1 Year
Metadata Next Review Date: 2020-05-31