Medium-Scale Traveling Ionospheric Disturbances Observed With Radio and Optical Instruments During the FRONT Campaign in Japan

Details Medium-Scale Traveling Ionospheric Disturbances Observed With Radio and Optical Instruments During the FRONT Campaign in Japan Medium-Scale Traveling Ionospheric Disturbances Observed With Radio and Optical Instruments During the FRONT Campaign in Japan

May 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001agusm..sa52a07s&link_type=abstract

American Geophysical Union, Spring Meeting 2001, abstract #SA52A-07

Physics

2427 Ionosphere/Atmosphere Interactions (0335), 2435 Ionospheric Disturbances, 2443 Midlatitude Ionosphere

Scientific paper

Medium-scale traveling ionospheric disturbances (MSTIDs) were observed with radio observational techniques, such as the MU radar, a GPS receiver array and ionosondes, and optical instruments, such as five all-sky CCD cameras and Fabry-Perot interferometers during the FRONT (F-region radio and optical measurement of nighttime TIDs) campaigns periods in May, 1998 and August, 1999. Wide field of view of GEONET, a GPS array operated by Geographical Survey Institute, and the all-sky CCD camera array detected the temporal evolution of MSTIDs as they traveled over Japan from northeast to southwest. Electron density profile observation by the incoherent scatter observation of the MU radar and the triangulation of the 630nm band air-glow detected by the all-sky CCD cameras indicate that the electron density variations of MSTIDs are mainly occurred on the bottomside of the F-region ionosphere. The coherent scatter observation of the MU radar revealed the 3-m scale irregularities were generated on the northwest wall of the MSTIDs. The results of the multi-instrumental observations are compared to reveal the physical mechanism of the midlatitude nighttime MSTIDs.

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