Open Access

Table 1

Description of the raw position and acoustic data received from the various buoy manufacturers and under the different data-exchange agreements (D1 and D2).

    Marine Instruments Satlink

    D1 D2
Buoy Operation Data Buoy identification code
Owner vessel(s)
Buoy activation date
Buoy deactivation date
Flash (notification on activation of the buoy flash)
Buoy operating mode)
Buoy battery level
in/out water sensor
Location data and other data Timestamp of GPS position data
GPS position data
Buoy speed
Buoy drift angle
Sea water temperature
Acoustic sampling data Timestamp of acoustic data collection
Sampling frequencies
Echosounder detection range
Gain of acoustic samplings
Resolution (number of bits used in each layer)
Number of depth layers
Total biomass index (estimated tonnage from the echosounder)
Maximum biomass estimated at any layer
Acoustic data format Integers (from 0-7 or 0-15) representing the intensity of the acoustic signal detected Biomass (tons) estimated per layer of 11.2 m over 115 m depth (10 layers), based on a buoy-integrated algorithm Total biomass (tons)
Buoys models in the dataset M3+, M4I, M3I, MSI DL+, DSL+, ISD+, ISL+ T7+

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