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Studying the vertical extent of the ground layer turbulence using sonic-anemometers

Published online by Cambridge University Press:  24 December 2009

T. Travouillon
Affiliation:
California Institute of Technology, 1200 E. California Blvd, Pasadena, CA 91125, USA
E. Aristidi
Affiliation:
Laboratoire Fizeau, Université de Nice Sophia Antipolis, 06108 Nice Cedex 2, France
E. Fossat
Affiliation:
Laboratoire Fizeau, Université de Nice Sophia Antipolis, 06108 Nice Cedex 2, France
E. Bondoux
Affiliation:
Laboratoire Fizeau, Université de Nice Sophia Antipolis, 06108 Nice Cedex 2, France
Z. Challita
Affiliation:
Laboratoire Fizeau, Université de Nice Sophia Antipolis, 06108 Nice Cedex 2, France
D. Mekarnia
Affiliation:
Laboratoire Fizeau, Université de Nice Sophia Antipolis, 06108 Nice Cedex 2, France
F. Jeanneaux
Affiliation:
Laboratoire Fizeau, Université de Nice Sophia Antipolis, 06108 Nice Cedex 2, France
D. Odoardi
Affiliation:
Laboratoire Fizeau, Université de Nice Sophia Antipolis, 06108 Nice Cedex 2, France
J.S. Lawrence
Affiliation:
University of New South Wales, 2052, Sydney, NSW, Australia
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Abstract

The optical turbulence above Dome C in winter is mainly concentrated in the first tens of meters above the ground. The properties of this so-called surface layer were investigated during the last two winterover by a set of sonics anemometers placed on a 45 m high tower. These anemometers provide measurements of the temperature and the wind speed vector. The sampling rate of 10 Hz allows to derivate the refractive index structure constant Cn2. We report here the first analysis of these data.

Type
Research Article
Copyright
© EAS, EDP Sciences, 2010

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References

Aristidi, E., et al., 2009, A&A, 499, 955
Lawrence, J.S., Ashley, M.C.B., Tokovinin, A., & Travouillon, T., 2004, Nature, 431, 278 CrossRef
Travouillon, T., Jolissaint, L., Ashley, M.C.B., Lawrence, J.S, & Storey, J.W.V., 2009, PASP, 121, 668 CrossRef
Travouillon, T., et al., 2008, SPIE, 7012, 70124B-5
Trinquet, H., et al., 2008, PASP, 120, 203 CrossRef

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