44 citations as recorded by crossref.

1. Extremely Low Frequency (ELF) Electromagnetic Signals as a Possible Precursory Warning of Incoming Seismic Activity V. Tritakis et al. https://doi.org/10.3390/atmos15040457
2. First VLF detections of ionospheric disturbances due to Soft Gamma Ray Repeater SGR J1550-5418 and Gamma Ray Burst GRB 090424 S. Chakrabarti et al. https://doi.org/10.1007/s12648-010-0145-5
3. Sunrise effect on 40 kHz signal amplitude and its characteristic variation with respect to geomagnetic storms A. Saha et al. https://doi.org/10.1139/cjp-2014-0319
4. Contaminated Effect of Geomagnetic Storms on Pre-Seismic Atmospheric and Ionospheric Anomalies during Imphal Earthquake S. Biswas et al. https://doi.org/10.4236/ojer.2020.95022
5. Precursory effects in the nighttime VLF signal amplitude for the 18th January, 2011 Pakistan earthquake S. Ray et al. https://doi.org/10.1007/s12648-012-0014-5
6. Unusual behaviour of VLF signal parameters before the devastating Nepal earthquake of 25th April, 2015 A. Choudhury et al. https://doi.org/10.1007/s12648-025-03656-3
7. Variation in the VLF signal noise amplitude during the period of intense seismic activity in Central Italy from 25 October to 3 November 2016 A. Nina et al. https://doi.org/10.3389/fenvs.2022.1005575
8. Thermal Anomalies Observed during the Crete Earthquake on 27 September 2021 S. Ghosh et al. https://doi.org/10.3390/geosciences14030073
9. Possible Pre-Seismic Indications Prior to Strong Earthquakes That Occurred in Southeastern Mediterranean as Observed Simultaneously by Three VLF/LF Stations Installed in Athens (Greece) D. Politis et al. https://doi.org/10.3390/atmos14040673
10. Anomalous enhancement of electric field derived from ionosonde data before the great Wenchuan earthquake T. Xu et al. https://doi.org/10.1016/j.asr.2010.11.006
11. Mid-latitude atmosphere and ionosphere connection as revealed by very low frequency signals S. Pal & Y. Hobara https://doi.org/10.1016/j.jastp.2015.12.008
12. Long‐duration geomagnetic storm effects on the D region of the ionosphere: Some case studies using VLF signal A. Choudhury et al. https://doi.org/10.1002/2014JA020738
13. A Six-Year (2014–2020) Statistical Correlation Study of VLF Terminator Time Shift with Earthquakes in Japan D. Politis et al. https://doi.org/10.3390/rs16224162
14. Investigation of Lower Ionospheric Perturbations Associated with the 7 October 2021 Tokyo Earthquake Using VLF Propagation and LWPC Modelling M. Hayakawa et al. https://doi.org/10.1541/jae.45.77
15. Comparative Statistical Detection of Ionospheric GPS-TEC Anomalies Associated with the 2021 Haiti and 2022 Cyprus Earthquakes S. Pal et al. https://doi.org/10.3390/geosciences16030129
16. Statistical and Criticality Analysis of the Lower Ionosphere Prior to the 30 October 2020 Samos (Greece) Earthquake (M6.9), Based on VLF Electromagnetic Propagation Data as Recorded by a New VLF/LF Receiver Installed in Athens (Greece) D. Politis et al. https://doi.org/10.3390/e23060676
17. Diagnostic study of geomagnetic storm-induced ionospheric changes over very low-frequency signal propagation paths in the mid-latitude D region V. Nwankwo et al. https://doi.org/10.5194/angeo-40-433-2022
18. Precursors signatures of few major earthquakes in Italy using very low frequency signal of 45.9 kHz K. Kandel et al. https://doi.org/10.1007/s11600-019-00316-z
19. A study to investigate the relationship between ionospheric disturbance and seismic activity based on Swarm satellite data Y. He et al. https://doi.org/10.1016/j.pepi.2021.106826
20. VLF signals in summer and winter in the Indian sub-continent using multi-station campaigns S. Chakrabarti et al. https://doi.org/10.1007/s12648-012-0070-x
21. Study of long path VLF signal propagation characteristics as observed from Indian Antarctic station, Maitri S. Sasmal et al. https://doi.org/10.1016/j.asr.2014.06.002
22. Probing the lower ionospheric perturbations associated with earthquakes by means of subionospheric VLF/LF propagation M. Hayakawa https://doi.org/10.1007/s11589-011-0823-1
23. Preseismic Perturbations and their Inhomogeneity as Computed from Ground‐ and Space‐Based Investigation during the 2016 Fukushima Earthquake S. Biswas et al. https://doi.org/10.1155/2023/7159204
24. Comparative study of the possible lower ionospheric anomalies in very low frequency (VLF) signal during Honshu, 2011 and Nepal, 2015 earthquakes S. Ghosh et al. https://doi.org/10.1080/19475705.2019.1595178
25. A Multi-Parametric Investigation of Seismogenic Signals: A Case Study of the 2018 Aomori Earthquake (Mw 6.2) K. Nanda et al. https://doi.org/10.4236/ojer.2026.152002
26. Seismoionospheric signatures associated with M < 6.0 earthquakes using vertical TEC in Türkiye P. Hama Rashid & F. Külahcı https://doi.org/10.1016/j.asr.2025.12.050
27. Numerical modelling of sub-ionospheric Very Low Frequency radio signal anomalies during the Samos (Greece) earthquake (M = 6.9) on October 30, 2020 S. Biswas et al. https://doi.org/10.1016/j.asr.2022.06.016
28. Pre-Seismic Irregularities during the 2020 Samos (Greece) Earthquake (M = 6.9) as Investigated from Multi-Parameter Approach by Ground and Space-Based Techniques S. Sasmal et al. https://doi.org/10.3390/atmos12081059
29. Study of aerosol anomaly associated with large earthquakes (M>6) S. Ghosh et al. https://doi.org/10.1016/j.asr.2022.08.051
30. Review of Subionospheric VLF/LF Radio Signals for the Study of Seismogenic Lower-Ionospheric Perturbations M. Hayakawa https://doi.org/10.3390/atmos16111312
31. Possible Identification of Precursor ELF Signals on Recent EQs That Occurred Close to the Recording Station I. Contopoulos et al. https://doi.org/10.3390/atmos15091134
32. Unusual behavior of Very Low Frequency signal during the earthquake at Honshu/Japan on 11 March, 2011 S. Sasmal et al. https://doi.org/10.1007/s12648-014-0520-8
33. Numerical modeling of possible lower ionospheric anomalies associated with Nepal earthquake in May, 2015 S. Chakraborty et al. https://doi.org/10.1016/j.asr.2017.06.031
34. First Results of the Wave Measurements by the WHU VLF Wave Detection System at the Chinese Great Wall Station in Antarctica X. Gu et al. https://doi.org/10.1029/2022JA030784
35. Studies of seismo-ionospheric correlations using anomalies in phase of very low frequency signal P. Pal et al. https://doi.org/10.1080/19475705.2016.1161666
36. On the Tempo-Spatial Evolution of the Lower Ionospheric Perturbation for the 2016 Kumamoto Earthquakes from Comparisons of VLF Propagation Data Observed at Multiple Stations with Wave-Hop Theoretical Computations T. Asano & M. Hayakawa https://doi.org/10.4236/ojer.2018.73010
37. Probing geomagnetic storm-driven magnetosphere–ionosphere dynamics in D-region via propagation characteristics of very low frequency radio signals V. Nwankwo et al. https://doi.org/10.1016/j.jastp.2016.04.014
38. On the Use of VLF Narrowband Measurements to Study the Lower Ionosphere and the Mesosphere–Lower Thermosphere I. Silber & C. Price https://doi.org/10.1007/s10712-016-9396-9
39. Detection of ionospheric perturbation due to a soft gamma ray repeater SGR J1550-5418 by very low frequency radio waves S. Mondal et al. https://doi.org/10.1007/s10509-012-1131-5
40. Unusual Change in Critical Frequency of F&lt;sub&gt;2&lt;/sub&gt; Layer during and Prior to Earthquakes S. Ghosh et al. https://doi.org/10.4236/ojer.2017.64012
41. Sub-ionospheric VLF signal anomaly due to geomagnetic storms: a statistical study K. Tatsuta et al. https://doi.org/10.5194/angeo-33-1457-2015
42. Towards Understanding Earthquake Preparatory Dynamics: A Multi-Parametric Investigation of the 2025 Kamchatka Mw 8.8 Event S. Sasmal et al. https://doi.org/10.3390/atmos16121328
43. VLF/LF Amplitude Perturbations before Tuscany Earthquakes, 2013 B. Khadka et al. https://doi.org/10.4236/ns.2017.912041
44. Exploring the difficulties in forecasting earthquake location with inhomogeneous ionospheric perturbations S. Biswas https://doi.org/10.1007/s11069-024-06773-0