کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1777909 1523678 2007 19 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
The lunar tides in the Antarctic mesosphere and lower thermosphere
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات فیزیک زمین (ژئو فیزیک)
پیش نمایش صفحه اول مقاله
The lunar tides in the Antarctic mesosphere and lower thermosphere
چکیده انگلیسی

Horizontal winds in the mesosphere and lower thermosphere over the Antarctic have been measured by a meteor radar at Rothera (67.5°S, 68.0°W) and MF radar at Davis (68.6°S, 78.0°E). Data from Rothera recorded over a 20-month interval in 2005–2006 and data from Davis recorded over the 13-year interval 1994–2006 are examined to investigate the monthly mean behaviour of the lunar semidiurnal tide. Both data sets show a clear signal of the 12.42-h lunar semidiurnal (M2) tide. The amplitude reaches values as large as 8 m s−1. The vertical wavelengths of the tide vary seasonally from ∼10 to 65 km. Comparisons of the phase of the tide measured over the two sites reveals that it does not purely consist of a migrating wavenumber 2 mode. This suggests that other, non-migrating, modes are likely to be present.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Atmospheric and Solar-Terrestrial Physics - Volume 69, Issues 17–18, December 2007, Pages 2219–2237
نویسندگان
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