IVC NASC Values (Inter-Vessel Calibration (IVC) Data Processing)

The primary goal of IVC data processing is to determine if there were differences in acoustic measurements between the former survey vessel (the NOAA ship Miller Freeman) and the most recent Fishery Survey Vessel (FSV), the NOAA ship Bell M. Shimada. This work is being conducted by NMFS personnel. It involves identifying and delineating backscatter layers attributed to Pacific hake for both vessels, and then integrating these regions and comparing nautical area scattering coefficent (NASC) values between the two vessels. The final product is a spreadsheet file that compares NASC values from Pacific hake that both vessels observed acoustically. This project is ongoing and is a crucial component of continuing the long-term time series of Pacific hake Integrated Acoustic and Trawl (IAT) surveys. The deadline for completing this project is a soft one. A comparison of Pacific hake NASC values between two acoustic vessels.

Data and Resources

Field Value
accessLevel public
bureauCode {006:48}
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catalog_describedBy https://project-open-data.cio.gov/v1.1/schema/catalog.json
identifier gov.noaa.nmfs.inport:18472
language {en-US}
modified 2015-07-30T13:27:01.703000-04:00
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programCode {006:056}
publisher (Point of Contact)
resource-type Dataset
source_datajson_identifier true
source_hash 240b2e50e3a5ba825f08b52e8713310cfef4f37c
source_schema_version 1.1
spatial {"type": "Polygon", "coordinates": [[[-122.306178, 47.644914], [-122.296178, 47.644914], [-122.296178, 47.654914], [-122.306178, 47.654914], [-122.306178, 47.644914]]]}
Groups
  • AmeriGEOSS
  • National Provider
  • North America
Tags
  • acoustics
  • amerigeo
  • amerigeoss
  • bell-m-shimada
  • ckan
  • doc-noaa-nmfs-nwfsc-northwest-fisheries-science-center
  • fram-fishery-resource-analysis-and-monitoring-division
  • geo
  • geoss
  • hake
  • inter-vessel-calibration
  • ivc
  • miller-freeman
  • montlake
  • national
  • national-marine-fisheries-service
  • noaa-u-s-department-of-commerce
  • north-america
  • nwfsc-montlake
  • pacific-hake
  • pacific-whiting
  • united-states
isopen False
license_id notspecified
license_title License not specified
maintainer Chu, Dezhang
maintainer_email Dezhang.Chu@noaa.gov
metadata_created 2025-11-22T17:52:57.529932
metadata_modified 2025-11-22T17:52:57.529936
notes The primary goal of IVC data processing is to determine if there were differences in acoustic measurements between the former survey vessel (the NOAA ship Miller Freeman) and the most recent Fishery Survey Vessel (FSV), the NOAA ship Bell M. Shimada. This work is being conducted by NMFS personnel. It involves identifying and delineating backscatter layers attributed to Pacific hake for both vessels, and then integrating these regions and comparing nautical area scattering coefficent (NASC) values between the two vessels. The final product is a spreadsheet file that compares NASC values from Pacific hake that both vessels observed acoustically. This project is ongoing and is a crucial component of continuing the long-term time series of Pacific hake Integrated Acoustic and Trawl (IAT) surveys. The deadline for completing this project is a soft one. A comparison of Pacific hake NASC values between two acoustic vessels.
num_resources 2
num_tags 22
title IVC NASC Values (Inter-Vessel Calibration (IVC) Data Processing)