HR: 14:55h
AN: OS53B-06    [Abstracts]
TI: Observing microscale fluorescence field in turbulence
AU: * Yamazaki, H
EM: hide@s.kaiyodai.ac.jp
AF: Tokyo University of Marine Science and Technology, 4-5-7 Konan, Minato-ku, Tokyo, 108-8477 Japan
AU: Wolk, F
EM: rockland@wolk.org
AF: Rockland Oceanographic Service Inc, 1112 Reno St, Victoria, BC V9A 4B6 Canada
AU: Li, H
EM: lihua@alec-electronics.co.jp
AF: Alec Electronics Co., 7-2-3 Ibukidai-Higashi, Nishi-ku, Kobe, 651-2242 Japan
AU: Lueck, R
EM: rlueck@uvic.ca
AF: University of Victoria, P.O. Box 3055 STN CSC, Victoria, BC V8W 3P6 Canada
AB: We have developed a freefall microscale structure profiler (TurboMAP) that measures the high-resolution fluorescence field in the upper ocean. TurboMAP carries conventional shear probe and FP07 and a new LED microscale fluorescence probe. We present the performance of TurboMAP, the calibration method of the LED probe, and the spectral feature of the fluorescence field at high wavenumbers. The high wavenumber end of the spectrum resembles a high Prandtl number spectrum. Thus we propose an apparent diffusivity for the fluorescence signals. A new laser fluorescence probe that resolve at least a ten times smaller scale than the LED probe will also be introduced.
DE: 4853 Photosynthesis
DE: 4568 Turbulence, diffusion, and mixing processes
DE: 4572 Upper ocean processes
SC: Ocean Sciences [OS]
MN: 2004 AGU Fall Meeting