Figure 7 – Raw time-series of measured total attenuation (A) and filtered absorption (B). (C) Particle size as indicated by γ derived from spectral beam attenuation. (D) Measured flow rate during the periodic filtered samples (some data are missing due to logger malfunction). Red vertical lines denote filter cartridge replacement by divers.
Figure 8 – Flowthrough installed in bilge of R/V Tara, currently underway on three-year mission to measure ocean properties. Flowing seawater enters system at Vortex de-bubbler (A) before three-way electrically-actuated valve (B), which sends flow directly to ac-s instrument (C), or diverts it through 0.2 μm cartridge filter (D) before entering ac-s instrument. Seawater flow is measured using paddle-wheel flow sensor (E). Valve controller and logging computer are located in dry lab space.
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