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JPR Advance Access originally published online on October 4, 2009
Journal of Plankton Research 2009 31(12):1441-1452; doi:10.1093/plankt/fbp092
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© The Author 2009. Published by Oxford University Press. All rights reserved. For permissions, please email: journals.permissions@oxfordjournals.org

An advanced laser-based fluorescence microstructure profiler (TurboMAP-L) for measuring bio-physical coupling in aquatic systems

Mark J. Doubell1, Hidekatsu Yamazaki1,*, Hua Li2 and Yusaku Kokubu1

1 Faculty of Marine Science, Tokyo University of Marine Science and Technology, 5-7, Konan 4, Minato-ku, Tokyo 108-8477, Japan 2 Oceanographic Lab, JFE Alec Co., 7-2-3 Ibukidai-higashi, Nishi, Kobe 651-2242, Japan

* CORRESPONDING AUTHOR: hide{at}kaiyodai.ac.jp

Received on June 3, 2009; accepted on September 7, 2009


  Abstract

An advanced model of the Turbulence Microstructure Acquisition Profiler, TurboMAP-L, to investigate the coupling between phytoplankton and turbulence in aquatic systems is described. The profiler provides simultaneous measurement of turbulence, hydrographic and biological parameters at sampling rates between 64 and 512 Hz. Specifically, the addition of a new laser fluorescence-based sensor extends the measurement of in situ chlorophyll fluorescence distributions to millimeter scales. Complementary information on phytoplankton patch and particulate matter size and spatial structure are obtained through the attachment of a separate CMOS mini-camera system. Images of the TurboMAP-L LED fluorescence/turbidity sensor sample volume are obtained with 330 x 330 µm resolution. Results with respect to the performance of the laser sensor and camera system are presented from laboratory tests and field experiments conducted in coastal waters off Tokyo, Japan.

Corresponding editor: Roger Harris


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