Retrieval of 2-D equatorial plasma bubble images from the TIMED/GUVI data

Details Retrieval of 2-D equatorial plasma bubble images from the TIMED/GUVI data Retrieval of 2-D equatorial plasma bubble images from the TIMED/GUVI data

Dec 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007agufmsa41a0265o&link_type=abstract

American Geophysical Union, Fall Meeting 2007, abstract #SA41A-0265

Physics

2415 Equatorial Ionosphere, 2435 Ionospheric Disturbances, 2437 Ionospheric Dynamics, 2439 Ionospheric Irregularities, 2494 Instruments And Techniques

Scientific paper

The optical images of the ionosphere from the TIMED/GUVI and IMAGE/FUV provide the global view of the equatorial plasma bubbles. The retrieval of the bubble characteristics such as latitudinal extension, tilt, and depletion width and depth provides very useful information for the dynamics of the background ionosphere and the underlying seeding mechanism of bubbles. We develop the 2-D bubble detection algorithm from each swath of the TIMED/GUVI data by employing the directional Laplacian kernel and principal component analysis techniques. Our method is distinguished from the currently known methods such as singular value decomposition and tomographic imaging. We will compare our bubble retrievals with the tomographic bubble images and discuss the variations of the bubble characteristics with season and longitude.

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