Coseismic ionospheric perturbations (CIP)

• Asper a new study, Earthquake processes, even relatively smaller ones, have their reflection in the ionosphere, as they influence the amplitudes and periods of coseismic ionospheric perturbations (CIP) along with factors such as geomagnetism and line-of-sights geometry.
• The finding can help observing earthquake source processes from the space which may pave the way for deciphering earthquake precursors using space-based observations.
• Phenomenon-
  • In general, the Earth crust uplift (vertical crustal movements) during any earthquake produces compressional (i.e. pressure) waves in the overlying atmosphere.
  • The waves propagate upward, reach the ionosphere, causing disturbances in numbers of electrons along the line-of-sights connecting ground Global Navigation Satellite System (GNSS) receivers and satellites.

These disturbances are called as coseismic ionospheric perturbations (CIP).