Aquatic Sciences Meeting, Albuquerque 2001

PC08 New Techniques and Technologies from Single Cells to the Global Ocean

Date: Wednesday, February 14, 2001

Location: Southwest Hall

Granata, T, C, The Ohio State University, Columbus, USA, granata.6@osu.edu

Ahrenholz, B, , University of Hannover, Hannover, Germany, ahrenholz@web.de

AUTOMATED, IN-SITU PROFILING IN THE BOTTOM BOUNDARY LAYER

Every benthic ecologist and sediment dynamicist knows that the vertical distribution of dissolved and particulate materials in the bottom boundary layer is very difficult to sample in-situ. As part of a project to measure the characteristics of dissolved and particulate materials in boundary layers modified by topographies and biological substrates, a new sampler has been developed. Profiles of the optical properties (absorption and attenuation) for discrete water parcels are automatically sampled to a vertical resolution of 5 cm every 1 to 3600 seconds using a submersible pump in-line with an optical sensor (an AC-9, Wet labs Inc.) and a series of solenoid values that are programmed to open at predefined depths.Fine scale data on particulate and dissolved distributions can then be combined with vertical measurements of currents to estimate transport of biotic and abiotic materials in the bottom boundary layer.

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Aquatic Sciences Meeting, Albuquerque 2001

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