Monitoring the optical turbulence in the surface layer at Dome C, Antarctica, with sonic anemometers

被引：21

作者：

Aristidi, E. ^{[1
]}

Vernin, J. ^{[1
]}

Fossat, E. ^{[1
]}

Schmider, F. -X. ^{[1
]}

Travouillon, T. ^{[2
]}

Pouzenc, C. ^{[3
]}

Traulle, O. ^{[4
]}

Genthon, C. ^{[5
]}

Agabi, A. ^{[1
]}

Bondoux, E. ^{[1
]}

Challita, Z. ^{[6
]}

Mekarnia, D. ^{[1
]}

Jeanneaux, F. ^{[1
]}

Bouchez, G. ^{[7
]}

机构：

[1] Univ Cote Azur, Observ Cote Azur, CNRS, Lab Lagrange, F-06108 Nice 2, France

[2] Thirty Metre Telescope, Pasadena, CA 91105 USA

[3] Observ Sirene, F-84400 Lagarde Dapt, France

[4] Meteo France CNRS, URA, CNRM GAME, F-1357 Toulouse, France

[5] UJF CNRS, LGGE, F-38402 St Martin Dheres, Dheres, France

[6] Aix Marseille Univ, CNRS, LAM, UMR 7326, F-13388 Marseille, France

[7] Univ Versailles, CNRS, GEMAC, F-78035 Versailles, France

来源：

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 2015年 / 454卷 / 04期

关键词：

turbulence; atmospheric effects; methods: data analysis; site testing; ATMOSPHERIC BOUNDARY-LAYER; SOUTH-POLE; PLATEAU; SIMULATIONS; TOWER;

D O I：

10.1093/mnras/stv2273

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The optical turbulence above Dome C in winter is mainly concentrated in the first tens of metres above the ground. Properties of this so-called surface layer (SL) were investigated during the period 2007-2012 by a set of sonic anemometers placed on a 45 m high tower. We present the results of this long-term monitoring of the refractive index structure constant C-n(2) within the SL, and confirm its thickness of 35 m. We give statistics of the contribution of the SL to the seeing and coherence time. We also investigate properties of large-scale structure functions of the temperature and show evidence of a second inertial zone at kilometric spatial scales.

引用

页码：4304 / 4315

页数：12

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