During the cruise, watercolumn sonar data was collected using EK80 with single frequency transcievers at 38, 70, 120, and 200 kHz frequencies (7 degree circular beam angles). Instrument successfully calibrated on 06/09/2022 and data collected with updated settings. Note: sound speed is not updated accoring to CTD - should be updated before use Ancillary data: CTD casts, ADCP (continuous during survey), TSG (continuous during survey)

Navy The Board of Inspection and Survey (INSURV)

Our routine ecosystem survey will make hydrographic measurements with a CTD, collect water samples for chemical analyses with a Niskin bottle rosette, and collect zooplankton samples with towed plankton nets at an array of stations along transect lines.

Scientists from the NOAA/NWFSC and DFO-Canada conducted a full acoustic-trawl survey of Pacific hake (Merluccius productus) from approximately Point Conception California up to Dixon Entrance Alaska. This dataset only includes the raw acoustic data collected by the NOAA/NWFSC vessel.

The objective of this work is to assess the habitats and associated biota off the West Coast using an Autonomous Underwater Vehicle (AUV), Remotely Operated Vehicle (ROV), CTD, and wave glider to act as communication hub for AUV. This work is part of the EXPRESS West Coast Alliance of federal agencies conducting research in deep habitats. This survey will focus on proposed wind energy sites and Essential Fish Habitat areas proposed for modification by the Pacific Fishery Management Council.

2021 Joint U.S.and Canada Integrated Ecosystem and Pacific Hake Acoustic Trawl Survey

Scientists from the NWFSC conducted an inter-vessel calibration (IVC) with a Fisheries and Oceans Canada (DFO) vessel (Sir John Franklin) as well as lead investigations into the Simrad EK80 scientific echosounder system, advanced technologies, and associated ecosystem components (e.g., research focused on rockfish and krill) in support of the Pacific hake (Merluccius productus) stock assessment.

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The following are specific objectives for the spring CalCOFI. Continuously sample pelagic fish eggs using the Continuous Underway Fish Egg Sampler (CUFES). The data will be used to estimate the distributions and abundances of spawning hake, anchovy, mackerel, and early spawning pacific sardine. Continuously sample multi-frequency acoustic backscatter using the Simrad EK80 and the Simrad ME70. The data will be used to estimate the distributions and abundances of coastal pelagic fishes (e.g., sardine, anchovy, and mackerel), and krill species. Continuously sample sea-surface temperature, salinity, and chlorophyll-a using a thermosalinometer and fluorometer. These data will be used to estimate the physical oceanographic habitats for target species. Continuously sample air temperature, barometric pressure, and wind speed and direction using an integrated weather station. Sample profiles of seawater temperature, salinity, chlorophyll-a, nutrients, and phytoplankton using a CTD with water-sampling rosette and other instruments at prescribed stations. Measurements of extracted chlorophyll and phaeophytin will be obtained with a fluorometer. Nutrients will be measured with an auto-analyzer. Sample the light intensity in the photic zone using a standard secchi disk in conjunction with a daytime CTD station. Sample plankton using a CalBOBL (CalCOFI Bongo Oblique) at prescribed stations. These data will be used to estimate the distributions and abundances of ichthyoplankton and zooplankton species. Sample plankton using a Manta (neuston) net at prescribed stations. These data will be used to estimate the distributions and abundances of ichthyoplankton species. Sample the vertically integrated abundance of fish eggs using a Pairovet net at prescribed stations. These data will be used to quantify the abundances and distributions of fish eggs. Sample plankton using a PRPOOS (Planktonic Rate Processes in Oligotrophic Ocean Systems) net at all prescribed CalCOFI stations on lines 90.0 and 80.0 as well as stations out to and including station 70.0 on lines 86.7 and 83.3 and station 81.8 46.9. PRPOOS will not be towed on SCCOOS stations. These data will be used in analyses by the LTER (Long Term Ecological Research) project. Continuously sample profiles of currents using the RDI/Teledyne Acoustic Doppler Current Profiler. This will be dependent on the ability to synchronize the ADCP’s output with the EK80 and ME70. The EK80 and ME70 will hold priority over the ADCP. Continuously observe, during daylight hours, seabirds and marine mammals. These data will be used to estimate the distributions and abundances of seabirds and marine mammals.

This survey is a continuation of long-term studies of the Northern California Current (NCC) pelagic ecosystem and includes study of broad-scale patterns of hydrography, phytoplankton and zooplankton and ocean acidification/hypoxia in the NCC Large Marine Ecosystem off Oregon and Washington. Ecosystem studies were initiated in 1996, and studies of ocean acidification/hypoxia were initiated in 2010.