PUBLICATIONS

INSWIM publications in Peer Reviewed Journals


Geomagnetic storm induced plasma density enhancements in the southern polar ionospheric region : a comparative study using St. Patrick's day storms of 2013 and 2015, Shreedevi P.R,R. K. Choudhary, et al., Space Research (under review)

Reverse fountain and the nighttime enhancement in the ionospheric electron density over the equatorial region: A case study; Yadav, Sneha, R. K. Choudhary, Jyoti Kumari, Surendra Sunda, P. R. Shreedevi, and Tarun K. Pant. Journal of Geophysical Research: Space Physics: e2019JA027286, 2020

Mid‐latitude Spread‐F structures over the geomagnetic low‐mid latitude transition region: An observational evidence; Sivakandan, M., S. Mondal, S. Sarkhel, D. Chakrabarty, M. V. SunilKrishna, P. Pavan Chaitanya, A. K. Patra et al. Journal of Geophysical Research: Space Physics: e2019JA027531, 2020

Morphological study on the ionospheric variabilities at Bharati, a polar cusp station in the southern hemisphere. Shreedevi P. R., and R. K. Choudhary, Journal of Atmospheric and Solar-Terrestrial Physics , 193,105018, 2019

Variation of the TEC at a dip equatorial station, Trivandrum and a mid latitude station, Hanle during the descending phase of the solar cycle 24 (2014–2016). Shreedevi, P.R., R.K. Choudhary, S. Yadav, S. Thampi, and A. Ajesh; Journal of Atmospheric and Solar-Terrestrial Physics , 179, pp.425-434, 2018

Impact of oscillating IMF B z during 17 March 2013 storm on the distribution of plasma over Indian low-latitude and mid-latitude ionospheric regions. Shreedevi, P. R., & R. K. Choudhary, Journal of Geophysical Research: Space Physics , 122, 11,607 –11,623. https://doi.org/10.1002/ 2017JA023980, 2017

A study on the evolution of plasma bubbles using the single station-multisatellite and    multistation-single satellite techniques, Unnikrishnan, K., H. Sreekumar, R. K. Choudhary, V. M. Ashna, K. M. Ambili, P. R. Shreedevi, Journal of Geophysical Research : Space Physics , 122, 3678–3688, doi:10.1002/2016JA023503, 2017

On the latitudinal changes in ionospheric electrodynamics and composition based on observations over the 76-77°E meridian from both hemispheres during a geomagnetic storm, Shreedevi P.R., S.V. Thampi, D. Chakravorty, R. K. Choudhary, T. K. Pant, and A. Bhardwaj, J. Geophys. Res. (Space Physics) , 121, doi:10.1002/2015JA021841, 2016

Direct observational evidence for disturbance dynamo on the daytime low-latitude ionosphere: A case study based on the 28 June 2013 space weather event, Thampi, S. V., P. R. Shreedevi, R. K. Choudhary, T. K. Pant, D. Chakrabarty, S. Sunda, S. Mukherjee, and A. Bhardwaj, J. Geophys. Res. (Space Physics) , 121, 10,064–10,074, 2016

Space Weather Research: Indian Perspective; Bhardwaj, A., T. K. Pant, R. K. Choudhary, D. Nandy, and P. K. Manoharan, Space Weather , 14, 2016

Space weather effects on lower ionosphere : First investigation from Bharati station during 34th scientific expedition to Antarctica; Guha, A., Saha K., De, B. K., Subrahmanyam, K. V.,P.R. Shreedevi, Adv. Space Res. , Volume 59, Issue 8, Pages 2007-2018,doi:10.1016/j.asr.2017.02.004, 2016

Impact of the perturbation zonal velocity variation on the spatio/temporal occurrence pattern of L band scintillation — A case study, Bagiya, M. S., R. Sridharan, S. Sunda, L. Jose, T. K. Pant, and R. Choudhary. J. Geophys. Res. Space Physics , 120, 5882–5889, doi:10.1002/ 2015JA021322, 2015.

Seasonal differences in the sunrise undulations at the dip equator at solar minimum at two distinct locations and their relation with post-sunset electrodynamics; Ambili K.M, R. K. Choudhary, and J.-P. St-Maurice, J. Geophys. Res. , doi:2014JA019783, 2014.

Nighttime vertical plasma drifts and the occurrence of sunrise undulation at the dip equator: A study using Jicamarca incoherent backscatter radar measurements. Ambili, K.M., Choudhary, R.K., St‐Maurice, J.P. and Chau, J.L., Geophysical Research Letters, 40(21), pp.5570-5575, 2013.

On the sunrise oscillation of the F region in the equatorial ionosphere, K. M. Ambili, J.-P.St.-
Maurice, and R.K. Choudhary, Geophys. Res. Lett. , 39, L16102, doi:10.1029/2012GL052876,2012.

Impacts of the January 15, 2010, annular solar eclipse on the equatorial and low latitude ionospheric densities; R.K. Choudhary, J.-P. St.-Maurice, K.M. Ambili, Surendra Sunda, and B.M. Pathan, J. Geophys. Res. , 116, doi: 10.1029/ 2011JA016504, 2011.

Local electrodynamics of a solar eclipse at the magnetic equator in the early afternoon hours, J.P. St.‐Maurice, K. M. Ambili, and R. K. Choudhary, Geophys. Res. Lett. , 38,L04102, doi:10.1029/2010GL046085, 2011.

Ph.D. Thesis


1. A study of equatorial and low latitude plasma processes using physics based ionospheric models in association with ground based/space borne optical and radio experiments; K. M. Ambili, Ph.D. thesis , University of Kerala, Trivandrum, 2014

2. A study on the impact of space weather events on the ionosphere over the Antarctic station Bharti and the Indian subcontinent; Shreedevi P.R., Ph.D. thesis , Cochin University Science and Technology (CUSAT), Kochi, 2017

M.Sc./ M.Tech Thesis


1. Ms Aswathy N.G., student of Jawaharlal College of Engg. and Technology, University of Calicut, Ottapalam, Palakkad, submitted a dissertation entitled “Use of GPS receiver system for studying atmopsheric precipitable water vapor” towards partial fulfillment of requirements for the award of M. Tech. Degree in Communication Engg. and Signal processing, 2016

2. Ms Jyoti Kumari, student of Amity University of applied sciences, Amity University, UP submitted a dissertation entitled “A study on the mid-night density maximum (MDM) at low and mid-latitude ionosphere using multi-frequency GPS receiver system” towards partial fulfillment of requirements for the award of M. Sc. Degree in Applied Physics, 2016

3. Ms Sruthy TS, student of School of Technology and Applied Sciences, M.G. University, Edappally submitted a dissertation entitled “A study on the amplitude scintillation in the GPS radio signal at the dip-equator using multi-frequency GPS receiver system” towards partial fulfillment of requirements for the award of M. Sc. Degree in Space Science and Technology, 2016

4. Ms Anjana Saju, student of School of Technology and Applied Sciences, M.G. University, Edappally submitted a dissertation entitled “A study on the Amplitude Scintillations in the GPS Radio signals at Mid-latitude region” towards partial fulfillment of requirements for the award of M. Sc. Degree in Space Science and Technology, 2016

5. Ms Akhila G. Nair, M.Tech. Student, Department of Civil Enginnering, SRM University, submitted a thesis entitled “A study on ionospheric disturbances due to urbanization” to the SRM University for the award of M.Tech. degree in remote sensing and GIS, 2017

6. Mr Krishnaprasad M., M.Sc. Student, TKMM College, Nangiarkulangara, submitted a thesis entitled “Study of the plasma density variation over the northern polar station, Ny-Alesund during the descending phase of the solar cycle 24 (2014-2016) and comparison with IRI-2016 model” to the University of Kerala for the award of a M.Sc. degree in Physics, 2018

7. Ms Deepika N., M.Sc. (Physics) student of Sree Narayana College, Varkaka, submitted a thesis on the assessment of the impact of ionospheric perturbations on GMRT Radio signals, to the University of Kerala for the award of a M.Sc. Degree in Physics, 2019

8. Ms. Sree lekshmy M.R., student of Dr. Palpu College of Arts and Science, Pangode, Kollam submited the thesis entitled “Study of the total electron content of the ionosphere over Kavaratti, & Trivandrum and their inter-comparison for different constellations of Global Navigation Satellite Systems” to University of Kerala for the award of a M.Sc. Degree in Physics, 2020.

9. Ms. Jyothi M., student of Dr. Palpu College of Arts and Science, Pangode, Kollam, submited the thesis entitled “A comparative study on the total electron content of the ionosphere over Trivandrum and Portblair using multi-frequency, multi-constellation, GNSS receiver systems” to University of Kerala for the award of a M.Sc. Degree in Physics, 2020.

10.Mr. Ravikannan G. student of Sri Ramakrishna Mission Vidyalaya, College of Arts and Science, Coimbatore, submited a thesis entitled “A comparative study on the storm-impact at the mid-latitude and dip-equatorial regions in the Indian ionospheric sector” for the award of a M.Sc. Degree in Physics, 2020.