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EK60 Water Column Sonar Data Collected During GU1203

Published by NOAA National Centers for Environmental Information | National Oceanic and Atmospheric Administration, Department of Commerce | Catalog Last Checked: April 12, 2026 at 08:42 PM | Dataset Last Updated: July 31, 2024 at 12:00 AM
Assess the occurrence, abundance and distribution of the early life stages of fall spawning fishes, especially king and Spanish mackerel, red drum, and snappers during the Southeast Area Monitoring and Assessment Program (SEAMAP) fall plankton survey of U.S. continental shelf waters in the Gulf of Mexico. b. Describe the pelagic habitat of fish larvae through measurements of various physical and biological parameters: i. Record profiles through the water column of temperature, salinity, fluorescence, dissolved oxygen, and turbidity using a Conductivity/Temperature/Depth (CTD) unit at SEAMAP stations. ii. Measure chlorophyll a in replicate water samples taken at surface, maximum chlorophyll layer and near bottom (to a maximum of 200 m) depths using bench top fluorometry. iii. Detect and measure frontal features along the survey cruise track using data from the ship’s Fluoro-thermosalinograph flow-through system (TSG). c. Map the distribution of fish eggs and invertebrate zooplankton along the cruise track using a Continuous Underway Fish Egg Sampler (CUFES). d. Collect detailed observations of net-caught jellyfish and ctenophores. e. Measure the vertical distribution of fish larvae by sampling at discrete depths in the water column at selected locations along the SEAMAP plankton survey grid using a 1 m Multiple Opening/Closing Net and Environmental Sensing System (MOCNESS) during both legs of the survey.

Resources

6 resources available

  • Water Column Sonar Data Map Viewer

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  • AWS Cloud Storage Bucket

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  • Water Column Sonar Data Archive Homepage

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  • Global Change Master Directory (GCMD) Keywords

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  • International Hydrographic Organization (IHO) Sea Area ("Limits of Oceans and Seas" publication S-23)

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  • NCEI Contact Information

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