Symposium on

Seismic imprints from the coupled systems

Organized by IIG

Ionosphere is disturbed by sun, magnetosphere, mesosphere, stratosphere, troposphere and lithosphere. Lithospheric disturbances are mainly due to earthquakes, volcanic eruptions, cryospheric or human activity. In particular, the large earthquakes can induce detectable ionospheric plasma perturbations. Inferring the seismological information from these seismo-ionospheric manifestations is the subject that pertains to ionospheric seismology. Remote sensing of the seismic signals in the ionospheric plasma is feasible mainly due to conservation of kinetic energy and the exponential decrease of air density with the height. Further, it should be noted that it is easier to detect waves propagating in ionospheric plasma more than in neutral atmosphere, because of the radio-propagation properties (dispersive nature) of plasma.The recent technological advances colossally facilitating the monitoring the seismo-ionospheric perturbations with both ground and space based advanced radio techniques.The imaged ionospheric perturbations from dense GNNS networks, ionosondes and ionospheric probing methods could, in principle, be used as a proxy to study the coupling and energy transfer processes in the Lithosphere, Atmosphere and Ionosphere (LAI) coupled system. These also facilitate the insights on earthquake magnitude, mechanism, rupture process and radiation pattern. Further, it is possible to estimate the Rayleigh group velocity distribution from the ionospheric response to any large earthquake, thereby demonstrating the sensitivity of the ionosphere to crustal in homogeneities. This is construed as one way of providing authentication of our seismo-ionospheric TEC response.

Various talks in the above mentioned themes will give the present scenario and understanding of the seismo-ionospheric manifestations, thus providing an opportunity in resolving the intricacies pertaining to pre-seismic LAI coupling processes.


  • Earth and atmosphere coupling processes
  • Seismo-ionospheric anomalies and implications
  • Acoustic resonance between the solid earth and the atmosphere
  • Modelling and simulation of seismo-ionospheric response

Scientific Advisors

Prof. D.S. Ramesh, Prof. V.P. Dimri, Prof. Abhijit Sen, Prof. P. Rajendra Prasad


Dr. P.S. Sunil, Dr. Rajesh Singh, Dr. Sripati,Dr. Tulasiram, Dr. Bharati, Dr. Mala Bagya, Mr. A.S. Sunil, Ms.Thomas Dhanya

                022-27484080, 022-27484056

For further details visit : Indian Institute of Geomagnetism, Navi Mumbai, India

Convener                                                                                                     Co-convener

Dr. C.D. Reddy                                                                                                               Dr. Gopi Seemala


All Abstracts may be sent to:

Kalachand Sain


FIGA Triennial Congress