Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1764903 | Advances in Space Research | 2014 | 8 Pages |
Abstract
Recent observations of daytime 150Â km echoes made from Gadanki have revealed 'descending layer type' echoing pattern, which are remarkably different from their well known 'necklace' pattern. These descending layer type echoing pattern have close resemblance to those of the nighttime valley region echoes that are presumably linked with the intermediate layer formed by the meridional wind shear associated with the semidiurnal/terdiurnal tidal winds. The observed close resemblance between the two echoing patterns reminds the plausible role of the semidiurnal/terdiurnal tidal wind and metallic ions in the governing physical processes. We present a comparative anatomy of these two echoing phenomena by making a close examination of the radar observations from Gadanki. Importantly, we bring out the similarities and dissimilarities in their characteristics and discuss the results in the light of currently available theoretical frameworks in an effort to further our understanding on the origin of these echoing phenomena, which have been addressed so far in isolation.
Keywords
Related Topics
Physical Sciences and Engineering
Earth and Planetary Sciences
Space and Planetary Science
Authors
A.K. Patra, P. Pavan Chaitanya,