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Proceedings Paper

The dependence of optical turbulence on thermal and mechanical forces over the sea
Author(s): Alexander M. J. van Eijk; Detlev Sprung; Erik Sucher; Christian Eisele; Dirk Seiffer; Karin Stein
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Paper Abstract

Optical turbulence for over-water conditions was investigated in a long-term experiment over False Bay near Cape Town, South Africa. A sonic anemometer and two boundary-layer scintillometers were deployed to access in-situ turbulence as well as the integrated turbulence over two 1.8 and 8.7 km paths. Statistical analysis reveals spatial temporal variations of the turbulence conditions over False Bay, which might be related to differences in the atmospheric conditions and/or the surface (water) temperatures. An analysis in terms of mechanical and thermal forcing reveals that the latter factor is more dominant in determining the turbulence strength.

Paper Details

Date Published: 19 September 2016
PDF: 8 pages
Proc. SPIE 9979, Laser Communication and Propagation through the Atmosphere and Oceans V, 99790R (19 September 2016); doi: 10.1117/12.2239324
Show Author Affiliations
Alexander M. J. van Eijk, Fraunhofer-Institut für Optronik, Systemtechnik und Bildauswertung (Germany)
TNO Defence, Security and Safety (Netherlands)
Detlev Sprung, Fraunhofer-Institut für Optronik, Systemtechnik und Bildauswertung (Germany)
Erik Sucher, Fraunhofer-Institut für Optronik, Systemtechnik und Bildauswertung (Germany)
Christian Eisele, Fraunhofer-Institut für Optronik, Systemtechnik und Bildauswertung (Germany)
Dirk Seiffer, Fraunhofer-Institut für Optronik, Systemtechnik und Bildauswertung (Germany)
Karin Stein, Fraunhofer-Institut für Optronik, Systemtechnik und Bildauswertung (Germany)


Published in SPIE Proceedings Vol. 9979:
Laser Communication and Propagation through the Atmosphere and Oceans V
Alexander M. J. van Eijk; Christopher C. Davis; Stephen M. Hammel, Editor(s)

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The dependence of optical turbulence on thermal and mechanical forces over the sea



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