@article{fdi:010081332,
  title = {{A}ssociation of ionospheric signatures to various tectonic parameters during moderate to large magnitude earthquakes : case study},
  author = {{S}unil, {A}. {S}. and {B}agiya, {M}. {S}. and {B}letery, {Q}uentin and {R}amesh, {D}. {S}.},
  editor = {},
  language = {{ENG}},
  abstract = {{T}he sudden ground movement associated with {M}w > 6.5 earthquakes is considered a potential source of ionospheric electron density perturbations over the fault region. {C}oseismic ground displacement is a function of various seismic source parameters such as moment magnitude, focal depth, and focal mechanism etc. {W}e study here the distinct effects of vertical ground displacement, moment magnitude and focal depth on coseismic ionospheric perturbation ({CIP}) amplitudes during moderate-to-large earthquakes. {W}e analyze {GPS}-total electron content variations during 59 dip-slip earthquakes that occurred in the last 20 years. {O}ur study reveals that though {CIP} amplitudes are primarily controlled by moment magnitude, they are also sensitive to the earthquake focal depth. {T}o understand the influence of focal depth on the displacement field and therefore on {CIP} amplitudes, we present a simple synthetic test, for a depth range of 0-200 km, highlighting that the maximum vertical ground displacement decreases logarithmically with increasing focal depth while the volume (i.e., integrated vertical ground displacement) of uplifted/subsided material varies very marginally. {W}e conclude that {CIP} is sensitive to the wavelength of co-seismic vertical displacement field and that seismic energy propagation to the overlying atmosphere during deep earthquakes is not adequate to generate detectable {CIP}.},
  keywords = {co-seismic ionospheric perturbations ; co-seismic vertical ; displacement ; deep earthquake ; focal depth ; moment magnitude ; shallow ; earthquake},
  booktitle = {},
  journal = {{J}ournal of {G}eophysical {R}esearch : {S}pace {P}hysics},
  volume = {126},
  numero = {3},
  pages = {e2020{JA}028709 [11 ]},
  ISSN = {2169-9380},
  year = {2021},
  DOI = {10.1029/2020ja028709},
  URL = {https://www.documentation.ird.fr/hor/fdi:010081332},
}