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Summary: Title : will be set by the publisher
Editors : will be set by the publisher
EAS Publications Series, Vol. ?, 2006
CHARACTERISATION OF THE DOME C ATMOSPHERIC
BOUNDARY LAYER TURBULENCE WITH A NON-DOPPLER
ACOUSTIC RADAR
J.S. Lawrence1, M.C.B. Ashley1, C.S. Bonner1, S. Bradley2, D.
Luong-Van1 and J.W.V. Storey1
Abstract. The Antarctic plateau has superb astronomical seeing above
a turbulent boundary layer. This layer has a thickness of between tens
of metres and a few hundred metres, depending on the site. We are
developing a sonic radar, SNODAR, to measure the turbulence in the
boundary layer from 10 to 50 metres, and, in particular, to measure the
height of the boundary layer to an accuracy of 1 metre. Commercial
sonic radars typically have a lower limit of about 10 metres, and have 10
metre range bins. The results from SNODAR should allow a confident
assessment of the height at which one must mount a telescope in order
to realise the superb free atmosphere seeing from the Antarctic plateau,
which has been measured at Dome C to be 0.3 arcsecs.
1 Introduction
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