منابع مشابه
Observations of the lunar tides
Observations of lunar tides in the mesosphere and lower thermosphere at Arctic and middle latitudes D. J. Sandford, H. G. Muller, and N. J. Mitchell Centre for Space, Atmospheric & Oceanic Science, Department of Electronic and Electrical Engineering, University of Bath, Bath, BA2 7AY, UK Received: 21 February 2006 – Accepted: 20 March 2006 – Published: 12 June 2006 Correspondence to: D. J. Sand...
متن کاملLunar and Solar Barometric Tides in Australia
The lunar semidiurnal barometric tide Lz and the solar 2 4 , 12-, and &hr. oscillations of the surface pressure have been determined for 10 stations in Australia and on adjacent islands. At Rabaul and Moresby L2 is considerably smaller than elsewhere in these latitudes. The characteristic annual variation of the phase-late high tide during the D season-is found a t most Australian stations. But...
متن کاملOn the Geomagnetic Lunar Daily Variation Field
The geomagnetic lunax daily variation field, L, was studied using all available results of lunar analysis of geomagnetic data from a total of 37 stations. Equivalent external (overhead) and internal (induced within the earth) electric current systems responsible for L variations with respect to dip latitude were estimated by the method of spherical harmonic analysis for each season. The externa...
متن کاملLunar tides in the Mesosphere over Ascension Island ( 8 ◦ S , 14 . 4 ◦ W )
A meteor radar has been used to measure the horizontal winds in the equatorial mesosphere and lower thermosphere over Ascension Island (8.0 • S, 14.4 • W). A 5-year data set covering the interval 2001–2005 over the height range 78–100 km is considered. The lunar M 2 tide is clearly evident in the data and reaches amplitudes as large as 11 ms −1 in the meridional component and 6 ms −1 in the zon...
متن کاملObservations of lunar tides in the mesosphere and lower thermosphere at Arctic and middle latitudes
Meteor radars have been used to measure the horizontal winds in the mesosphere and lower thermosphere over Castle Eaton (52 N) in the UK and over Esrange (68 N) in Arctic Sweden. We consider a 16-year data set covering the interval 1988–2004 for the UK and a 6-year data set covering the interval 1999–2005 for the Arctic. The signature of the 12.42-h (M2) lunar tide has been identified at both l...
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ژورنال
عنوان ژورنال: Journal of geomagnetism and geoelectricity
سال: 1970
ISSN: 0022-1392
DOI: 10.5636/jgg.22.291