2000/07/05 by É. L. Afraimovich, E. L. Afraimovich, Afraimovich, E. L. +8
Earth and Planetary Sciences · Physics and Astronomy · #Earthquake Detection and Analysis #FOS: Physical sciences #Geophysics (physics.geo-ph) #Ionosphere and magnetosphere dynamics #Solar and Space Plasma Dynamics #physics.geo-ph
paper · pdf · doi:10.48550/arxiv.physics/0007006
EmTeX-386, 3 pages, 3 figures
arxiv created 2000/07/05 · openalex publication_date 2000/07/05 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We developed a new technology for global detection of atmospheric disturbances, on the basis of phase measurements of the total electron content (TEC) using an international GPS networks. Temporal dependencies of TEC are obtained for a set of spaced receivers of the GPS network simultaneously for the entire set of visible satellites. These series are subjected to filtering in the selected range of oscillation periods using known algorithms for spatio-temporal analysis of signals. An "instantaneous" ionospheric response to the sudden commencement of a strong magnetic storm of April 6, 2000 was detected. On the dayside of the Earth the largest value of the net response amplitude was found to be of order 0.8*1016 m-2 (1--2 % of the background TEC value), and the delay with respect to the SC in mid-latitudes was about 200 s. In higher latitudes the delay goes as long as 15 min. On the nightside these values are 0.2*1016 m-2 and 30 min, respectively. The velocity of the traveling disturbance from the middle to high latitudes on the dayside as well as from the dayside to the nightside was about 10-20 km/s.