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    • Monterey Bay Profiles from CTD, Nephelometer, a Transmissometer and a Structured Light Source with High Definition Video Detection were used on board the RO Ventana during September 2001 and March 2002 for Study of Methane Cycling in Mid-Water Suspended Particle Layers (NCEI Accession 0000902)

    Metadata Updated: March 1, 2026

    CTD data from remotely operated vehicle working in Monterey Bay, California.

    The remotely operated vehicle Ventana was used to measure the vertical distribution and the optical characteristics of suspended layers of fine particles along the axis of Monterey Canyon in Monterey Bay, California. A combination of a nephelometer, a transmissometer and a structured light source with high definition video detection was used for these measurements. The particles layers ranged from broad bands extending over several hundred meters of depth to thin, concentrated layers <20 m thick.

    Ventana was also used to collect water samples, without the physical disruptions inherent in CTD/rosette-based sampling, within and around the particle layers. Samples were collected from depths of 400 - 1450 m and are being analyzed for methane, methane carbon stable isotopes, alkalinity, nutrients, thorium isotopes, and pH. In addition, video of the structured light transects were analyzed to determine particle size distribution and collected particles were analyzed for mineral and chemical composition. Finally, genomic characterization of the microbial communities on the collected particles will be conducted.

    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.

    Downloads & Resources

    Dates

    Metadata Date 2026-01-18T11:32:28Z
    Metadata Created Date December 4, 2020
    Metadata Updated Date March 1, 2026
    Reference Date(s) January 31, 2003 (publication), January 18, 2026 (revision), January 31, 2003 (creation)
    Frequency Of Update asNeeded

    Metadata Source

    Harvested from NOAA/NESDIS/ncei/accessions

    Other Data Resources

    Graphic Preview

    Preview graphic

    Additional Metadata

    Resource Type Dataset
    Metadata Date 2026-01-18T11:32:28Z
    Metadata Created Date December 4, 2020
    Metadata Updated Date March 1, 2026
    Reference Date(s) January 31, 2003 (publication), January 18, 2026 (revision), January 31, 2003 (creation)
    Responsible Party (Point of Contact)
    Contact Email
    Guid gov.noaa.nodc:0000902
    Access Constraints Cite as: Sansone, Francis J.; University of Hawai'i at Mānoa (2003). Monterey Bay Profiles from CTD, Nephelometer, a Transmissometer and a Structured Light Source with High Definition Video Detection were used on board the RO Ventana during September 2001 and March 2002 for Study of Methane Cycling in Mid-Water Suspended Particle Layers (NCEI Accession 0000902). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://www.ncei.noaa.gov/archive/accession/0000902. Accessed [date]., 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.
    Bbox East Long -122.05
    Bbox North Lat 36.77
    Bbox South Lat 36.7
    Bbox West Long -122.12
    Coupled Resource
    Frequency Of Update asNeeded
    Graphic Preview Description Preview graphic
    Graphic Preview File https://www.ncei.noaa.gov/access/metadata/landing-page/bin/gfx?id=gov.noaa.nodc:0000902
    Graphic Preview Type PNG
    Harvest Object Id 28d32d0b-6245-4aab-a64c-96b51b8a1a07
    Harvest Source Id c084a438-6f6b-470d-93e0-16aeddb9f513
    Harvest Source Title NOAA/NESDIS/ncei/accessions
    Licence accessLevel: Public
    Lineage
    Metadata Language eng
    Metadata Type geospatial
    Old Spatial {"type": "Polygon", "coordinates": [[[-122.12, 36.7], [-122.05, 36.7], [-122.05, 36.77], [-122.12, 36.77], [-122.12, 36.7]]]}
    Progress completed
    Spatial Data Service Type
    Spatial Reference System
    Spatial Harvester True
    Temporal Extent Begin 2001-09-17
    Temporal Extent End 2002-03-22

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