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    • SWAL Hybrid Millidecade Spectra

    Metadata Updated: November 1, 2023

    To understand natural and anthropogenic sound in the ocean, and to compare underwater soundscapes globally, standard methods of analysis must be applied to passive acoustic monitoring (PAM) data. Methods that balance constrained volume and adequate resolution of acoustic spectra have recently been published (Martin et al., 2021a,b). A community effort supported by NOAA, BOEM, U.S. Navy, and ONR was initiated to apply these methods to PAM datasets from around the world. These records are hybrid millidecade (HMD) spectra of sound levels derived from calibrated passive acoustic data. Daily HMD at 1 minute resolution were created using standalone MANTA software (v9.6.11).

    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 October 21, 2023
    Metadata Created Date November 1, 2023
    Metadata Updated Date November 1, 2023
    Reference Date(s) May 1, 2024 (publication)
    Frequency Of Update asNeeded

    Metadata Source

    Harvested from NGDC MGG Passive Acoustic

    Other Data Resources

    Graphic Preview

    Representative hybrid millidecade spectra image

    Additional Metadata

    Resource Type Series
    Metadata Date October 21, 2023
    Metadata Created Date November 1, 2023
    Metadata Updated Date November 1, 2023
    Reference Date(s) May 1, 2024 (publication)
    Responsible Party DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce (Point of Contact); NOAA National Centers for Environmental Information (Point of Contact)
    Contact Email
    Guid gov.noaa.ncei.pad:SWAL_HMD
    Access Constraints Distribution liability: NOAA and NCEI make no warranty, expressed or implied, regarding these data, nor does the fact of distribution constitute such a warranty. NOAA and NCEI cannot assume liability for any damages caused by any errors or omissions in these data. If appropriate, NCEI can only certify that the data it distributes are an authentic copy of the records that were accepted for inclusion in the NCEI archives., Use liability: NOAA and NCEI cannot provide any warranty as to the accuracy, reliability, or completeness of furnished data. Users assume responsibility to determine the usability of these data. The user is responsible for the results of any application of this data for other than its intended purpose., Cite as: Scripps Institution of Oceanography. 2023. Hybrid Millidecade Spectra at 1 Minute Resolution Recorded by the Scripps Whale Acoustics Laboratory (SWAL). NOAA National Centers for Environmental Information. https://doi.org/10.25921/ht84-bg61. [access date]
    Bbox East Long -180.0
    Bbox North Lat 90.0
    Bbox South Lat -90.0
    Bbox West Long -180.0
    Coupled Resource
    Frequency Of Update asNeeded
    Graphic Preview Description Representative hybrid millidecade spectra image
    Graphic Preview File https://www.ngdc.noaa.gov/mgg/pad/browse/SWAL_HMD.png
    Graphic Preview Type png
    Harvest Object Id 622d0f31-e0cd-4e15-9a48-b738ba7b0b07
    Harvest Source Id 8812445c-2f10-47c5-80d9-c1bc92ca956d
    Harvest Source Title NGDC MGG Passive Acoustic
    Licence
    Lineage
    Metadata Language eng; USA
    Metadata Type geospatial
    Old Spatial {"type": "Point", "coordinates": [-180.0, -90.0]}
    Progress onGoing
    Spatial Data Service Type
    Spatial Reference System
    Spatial Harvester True
    Temporal Extent Begin 2006-09-26T12:00:00
    Temporal Extent End 2007-01-31T06:34:41

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