Broadband Data (Low Frequency Broadband Echosounder I)

The objective of the proposed research is to conduct a feasibility study for discriminating Pacific hake from Humboldt squid using a commercially available broadband echosounder system.The specific tasks include the following:

(1) Performing system calibration using a 30-cm aluminum sphere.

(2) Deploying the system to record the backscattering from the following: a) Hake aggregation. b) Humboldt squid aggregation.

 c) Hake and Humboldt squid mixed aggregation.

(3) Determining the size of fish aggregations that have distinct swim bladder sizes by using spectral analysis at or near fish resonance frequency.

The results from this proposed work will address the issues raised by hake assessment STock Assessment Review (STAR) panel and Pacific Fishery Management Councils (PFMC) Scientific and Statistical Committee (SSC) as regarded critical to improve the quality of future hake stock assessments. Although this proposed work targets at Pacific hake, it is applicable to other fish species such as herring and myctophids.The participants of the project include Dezhang Chu (PI), Larry Hufnagle, and John Pohl. It is on-going project. Raw binary broadband data

Data and Resources

Field Value
accessLevel public
bureauCode {006:48}
catalog_@context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
catalog_conformsTo https://project-open-data.cio.gov/v1.1/schema
catalog_describedBy https://project-open-data.cio.gov/v1.1/schema/catalog.json
identifier gov.noaa.nmfs.inport:18430
language {en-US}
modified 2012-08-15
old-spatial {"type": "Polygon", "coordinates": [[[-122.368989424, 47.605248824], [-122.306178, 47.605248824], [-122.306178, 47.644914], [-122.368989424, 47.644914], [-122.368989424, 47.605248824]]]}
programCode {006:056}
publisher (Point of Contact)
resource-type Dataset
source_datajson_identifier true
source_hash 6a3e65bc63e7856dd3ac86f123299976f5d822c0
source_schema_version 1.1
spatial {"type": "Polygon", "coordinates": [[[-122.368989424, 47.605248824], [-122.306178, 47.605248824], [-122.306178, 47.644914], [-122.368989424, 47.644914], [-122.368989424, 47.605248824]]]}
temporal 2011-03-15T00:00:00/2012-08-15T00:00:00
Groups
  • AmeriGEOSS
  • National Provider
  • North America
Tags
  • amerigeo
  • amerigeoss
  • biological
  • broadband-echosounder
  • ckan
  • classification
  • doc-noaa-nmfs-nwfsc-northwest-fisheries-science-center
  • edgetech
  • elliot-bay
  • fram-fishery-resource-analysis-and-monitoring-division
  • geo
  • geoss
  • hake
  • humboldt-squid
  • low-frequency
  • montlake
  • national
  • national-marine-fisheries-service
  • noaa-u-s-department-of-commerce
  • north-america
  • nwfsc-montlake
  • pacific-coast
  • resonance-frequency
  • seattle
  • united-states
  • washington
isopen False
license_id notspecified
license_title License not specified
maintainer Chu, Dezhang
maintainer_email Dezhang.Chu@noaa.gov
metadata_created 2025-11-21T06:50:01.197471
metadata_modified 2025-11-21T06:50:01.197475
notes The objective of the proposed research is to conduct a feasibility study for discriminating Pacific hake from Humboldt squid using a commercially available broadband echosounder system.The specific tasks include the following: (1) Performing system calibration using a 30-cm aluminum sphere. (2) Deploying the system to record the backscattering from the following: a) Hake aggregation. b) Humboldt squid aggregation. c) Hake and Humboldt squid mixed aggregation. (3) Determining the size of fish aggregations that have distinct swim bladder sizes by using spectral analysis at or near fish resonance frequency. The results from this proposed work will address the issues raised by hake assessment STock Assessment Review (STAR) panel and Pacific Fishery Management Councils (PFMC) Scientific and Statistical Committee (SSC) as regarded critical to improve the quality of future hake stock assessments. Although this proposed work targets at Pacific hake, it is applicable to other fish species such as herring and myctophids.The participants of the project include Dezhang Chu (PI), Larry Hufnagle, and John Pohl. It is on-going project. Raw binary broadband data
num_resources 2
num_tags 26
title Broadband Data (Low Frequency Broadband Echosounder I)