Acoustics Research

Metadata Updated: November 10, 2023

Fisheries acoustics data are collected from more than 200 sea-days each year aboard the FRV DELAWARE II and FRV ALBATROSS IV (decommissioned) and the FSV Henry B. Bigelow during pelagic, bottom-trawl, and marine mammal surveys. Acoustic sampling operations include continuous measurements using hull-mounted transducers and multi-frequency scientific echosounders. Biological sampling with midwater and bottom trawls, and underwater video deployments is conducted to verify species-specific backscatter and characterize sea-floor habitat. In-situ and laboratory experiments aid in understanding species-specific acoustic measurements. We are continuously developing, testing, and evaluating advanced sampling technologies during laboratory and field experiments to improve abundance estimates and map spatial and temporal distributions of fish and invertebrates. Acoustic, optic, and biological data are audited and archived in the NEFSC relational data management system.

Access & Use Information

License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

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Dates

Metadata Date	September 28, 2023
Metadata Created Date	November 12, 2020
Metadata Updated Date	November 10, 2023
Reference Date(s)	(publication)
Frequency Of Update	asNeeded

Metadata Source

ISO-19139 ISO-19139 Metadata
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Harvested from NMFS NEFSC

Additional Metadata

Resource Type	Dataset
Metadata Date	September 28, 2023
Metadata Created Date	November 12, 2020
Metadata Updated Date	November 10, 2023
Reference Date(s)	(publication)
Responsible Party	(Point of Contact, Custodian)
Contact Email	michael.jech@noaa.gov
Guid	gov.noaa.nmfs.inport:26654
Access Constraints	Cite As: Northeast Fisheries Science Center, [Date of Access]: Acoustics Research [Data Date Range], https://www.fisheries.noaa.gov/inport/item/26654., Access Constraints: There may be constraints due to the timing between the time the data is archived and when it becomes available \| Use Constraints: All the data have doi numbers. It is highly recommended that any use of the data includes citation of the doi.
Bbox East Long	-66
Bbox North Lat	44
Bbox South Lat	38
Bbox West Long	-75
Coupled Resource
Frequency Of Update	asNeeded
Harvest Object Id	3c6681ab-d860-49bf-9e6e-39b248d687cf
Harvest Source Id	523189fa-8edc-48e1-9ec5-f571e7dd923c
Harvest Source Title	NMFS NEFSC
Licence	NOAA provides no warranty, nor accepts any liability occurring from any incomplete, incorrect, or misleading data, or from any incorrect, incomplete, or misleading use of the data. It is the responsibility of the user to determine whether or not the data is suitable for the intended purpose.
Lineage	There exist event log files for source data; a step by step users manual which includes parameter settings on instruments and calibration steps; publications describe how data are post-processed and the perl code which is used in post-processing.
Metadata Language	eng
Metadata Type	geospatial
Old Spatial	{"type": "Polygon", "coordinates": [[[-75.0, 38.0], [-66.0, 38.0], [-66.0, 44.0], [-75.0, 44.0], [-75.0, 38.0]]]}
Progress	completed
Spatial Data Service Type
Spatial Reference System
Spatial Harvester	True
Temporal Extent Begin	1998-08-26

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