Bodega Bay

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  • Station History

    The Bodega Head shore station is a seawater intake site operated by the Bodega Marine Laboratory. The seawater intake is located at Horseshoe Cove on the ocean side of Bodega Head and has been active since 2003 and consists of various sensors that provide water temperature, conductivity and salinity. More details about this monitoring station can be found on the Bodega Ocean Observing Node website. This station is maintained by staff of the Bodega Marine Lab and is part of the Bodege Ocean Observing Node (BOON) project.

  • Sensor Information

    Sea-Bird Electronics SBE 16+ SEACAT

    BML seawater sensor sbe45

    Description: Self contained conductivity and temperature sensor, with strain gauge pressure sensor. Pumped during sampling with SBE 5T submersible pump.

    Location: Water sampled in sump at Laboratory seawater intake
    Latitude 38° 18’ 58.2” N, Longitude 123° 04’ 10.2” W

    Installed: 21 March 2003

    Specifications: Temperature
    Range: -5 to +35 °C
    Resolution: 0.0001 °C
    Accuracy: 0.005 °C

    Specifications: Conductivity
    Range: 0 to 9 S/m
    Resolution: 0.00005 S/m
    Accuracy: 0.0005 S/m

    Specifications: Pressure
    Range: 0 to 44 m
    Resolution: 0.002 % of full scale range
    Accuracy: 0.1% of full scale range

    Acquisition Settings:
    Sample interval = 10 seconds, no averaging
    Pumped during sample, with 2 second warm up

    Sea-Bird Electronics SBE 45 MicroTSG Thermosalinograph

    sbe45

    Description: An ultra-precision Wein Bridge oscillator to generate a frequency output in response to changes in conductivity and a bridge circuit using an ultra-stable aged thermistor and Vishay precision reference resistor for seawater temperature

    Location: Water sampled at Laboratory seawater intake

    Latitude 38° 18' 59.46" N, Longitude 123° 04' 15.34" W

    Installed: 1 January 2001 - March 2003

    Specifications: Temperature:
    Range: -5 to +35 °C
    Resolution: 0.0001 °C
    Accuracy: 0.002 °C

    Specifications: Conductivity
    Range: 0 to 7 S/m (0 to 70 mS/cm)
    Resolution: 0.00001 S/m
    Accuracy: 0.0003 S/m

    Specifications: Salinity
    Resolution: 0.0002 PSU
    Accuracy: 0.005 PSU

    Instrument Type: Sea-Bird Electronics SBE 4 Conductivity Meter

    Description: A Wein Bridge oscillator to generate a frequency output in response to changes in conductivity

    Location: Water sampled at Laboratory seawater intake
    Latitude 38° 18' 59.46" N
    Longitude 123° 04' 15.34" W

    Installed: 15 April 1988

    Specifications: Conductivity
    Range: 0 to 7 S/m (0 to 70 mS/cm)
    Resolution: 0.00001 S/m
    Accuracy: 0.003 S/m

    Specifications: Salinity
    Resolution: 0.0002 PSU
    Accuracy: 0.005 PSU

    Instrument Type: Platinum Resistance Thermometer

    Resolution: 0.01 °C

    Accuracy: 0.05 °C

    Special Note: Until December 1989, the sensor was positioned in a large sump. Water flowed frequently but not continuously through the sensor. During periods of non-flow, salinity readings may have been more varialble than during periods of flow.