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Raw EK60 echosounder data: Swart seamount, British Indian Ocean Territory 2015 Citable as data publication Roland Proud, Univeristy of St. Andrews School of Biology (2020): Raw EK60 echosounder data: Swart seamount, British Indian Ocean Territory 2015. https://doi.org/10.14284/425 Contact: Availability: This dataset is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License. Description These data consist of raw uncalibrated 38 and 120 kHz echosounder observations collected during a pelagic survey of the Chagos archipelago MPA (January 2015). more Observations were collected from a pole-mounted system (transducers were fixed at a depth of 3m). Data include several transects recorded during the 19th January at the Swart seamount site (close to Diego Garcia). A calibration was conducted prior to the survey. Resultant transducer peak gain (G0) and Simrad correction factor (Sa) values were as follows: 38 kHz (power = 1000 W; pulse duration = 1.024 ms; G0 = 20.97 dB; Sa = -0.62 dB) and 120 kHz (power = 250 W; pulse duration = 1.024 ms; G0 = 24.5 dB; Sa = -0.29 dB). Scope Themes: Biology, Biology > Acoustics Keywords: Marine/Coastal, Abundance, Biomass, Biota, Diversity, Echosounders, Sonar, ISW, Chagos Archipelago, Swart Seamount Geographical coverage ISW, Chagos Archipelago, Swart Seamount [Marine Regions] Temporal coverage 19 January 2015 Contributors Dataset status: Completed Data type: Data Data origin: Research: field survey Metadatarecord created: 2020-10-12 Information last updated: 2020-11-04 |