HR: 16:30h
AN: SA24A-03    [Abstracts]
TI: Tides in the Equatorial MLT Region: Results From Simultaneous MF and Meteor Radar Measurements From Indonesian and Indian Sectors
AU: * Gurubaran, S
EM: gurubara@rish.kyoto-u.ac.jp
AF: Research Institute for Sustainable Humanosphere, Kyoto University, Kyoto, 611 0011 Japan
AU: * Gurubaran, S
EM: gurubara@rish.kyoto-u.ac.jp
AF: Indian Institute of Geomagnetism, EGRL, Krishnapuram, Tirunelveli, 627 011 India
AU: Sridharan, S
EM: sridhar@rish.kyoto-u.ac.jp
AF: Research Institute for Sustainable Humanosphere, Kyoto University, Kyoto, 611 0011 Japan
AU: Tsuda, T
EM: tsuda@rish.kyoto-u.ac.jp
AF: Research Institute for Sustainable Humanosphere, Kyoto University, Kyoto, 611 0011 Japan
AU: Nakamura, T
EM: nakamura@rish.kyoto-u.ac.jp
AF: Research Institute for Sustainable Humanosphere, Kyoto University, Kyoto, 611 0011 Japan
AU: Vincent, R A
EM: robert.vincent@adelaide.edu.au
AF: Department of Physics and Mathematical Physics, University of Adelaide, Adelaide, 5005 Australia
AB: Tides in the equatorial mesosphere and lower thermosphere (MLT) region have continued to be of interest to the researchers because of their variabilities in different temporal and spatial scales that are yet to be modeled and whose causative mechanisms are yet to be understood. Ground based radars in the equatorial region have not been many but those from Christmas Island (2$^{o}$N, 158$^{o}$W), Jakarta (6.4$^{o}$S, 106.7$^{o}$E), Pontianak (0.03$^{o}$N, 109.3$^{o}$E) and Tirunelveli (8.7$^{o}$N, 77.8$^{o}$E) have provided a good amount of data base that has been used in the recent past to characterize many of the observational features of the tides over these sites. Recently, two more radars have been deployed in Indonesia, namely, the meteor radar at Koto Tabang (0.2$^{o}^$S, 100.3$^{o}$E) and the MF radar at Pameungpeuk (7.5$^{o}$S, 107.5$^{o}$E). The present work focuses on the tidal characteristics observed over Indonesia and India at three of those stations mentioned above, namely, Pontianak, Koto Tabang and Tirunelveli. Both short (over a period of a month) and long (over a period of a year) term tidal variabilities are examined in detail and the peculiarities in their behavior over the respective altitudes as well as between the longitudes are highlighted and discussed in this paper.
DE: 3332 Mesospheric dynamics
DE: 3334 Middle atmosphere dynamics (0341, 0342)
DE: 3384 Waves and tides
DE: 3399 General or miscellaneous
SC: SPA-Aeronomy [SA]
MN: 2004 AGU Fall Meeting