SiReNT - Coordinates

thing lacking in the DEMETER
satellite is the measurement of electron
concentration in the F-layer peak due to
low frequency of the installed receiver
(3.5 MHz), use to measure the critical
frequencies .It could be done with
the HF radiospectrometer scaling as
suggested by Pulinets et al., 2002c.
Conclusion
Among the dedicated satellite missions
the DEMETER micro-satellite looks to
be first of its kind in terms of earthquake
prediction from space. It has almost all
the components/properties necessary
to register seismo- ionospheric effects,
except the measurement of F-layer
critical frequency (foF2) – the most
sensitive parameter. Pulinets in his
book ‘ Ionospheric Precursors of
Earthquakes’ suggested that it is possible
to detect the critical frequency with
the HF radiospectrometer scaling the
HF noises from broadcast transmitter
penetrating into topside ionosphere
at frequencies higher than the critical
frequency. The authors wish to suggest
that if the frequency of the onboard
receiver increases to measure the
critical frequency of the F-layer peak
the device would probably become
a promising tool in this invaluable
research and soon we could have a
dedicated network of small satellites
for the earthquake prediction studies.
Acknowledgement
The authors are very much thankful
to Laboratoire de Physique and
Chimie de l’Environnement (LPCE)
for providing processed data and
Indo-French Center for Promotion
of Advance Research (IFCPAR) for
funding the project. The authors
wish to extend their gratitude to Prof.
M. Parrot of LPCE, France for his
valuable guidance during this project.
References
Figure (3) shows the plasma parameter variations and
VLF electric field burst recorded by the DEMETER
Gokhberg, B. M., Morgounov, A.
V., Pokhotelov, A. O., ‘Earthquake
Prediction Seismo- Electromagnetic
Phenomena’., 1995, Gordon
and Breach Publishers.
Gwal, A.K. , Shrivastava, A.,
and Malhotra, K., “Observation
of Seismogenic ULF Electric field
FluctuationsDetected as a Burst in the
Ionosphere during the Tsunamis over
the Andaman and Nicobar Islands”,
Curr. Sci. vol.91, pp. 229-234, 2006.
Jason, S. , Pulinets, S., Curiel, A.,
and Sweeting, M. Sir., “Earthquake
forecast Science Research with a Small
Satellite” usuh Annual /Small Satellites
Conference August 2002,SSCO2-IX-5.
Jason, S. , Pulinets, S., Curiel, A.,
and Liddle, D.,
“Earthquake
science
research with a
microsatellite”
Phil. Trans.
R.Soc.Lond.
A(2003) 361,1-5.
Parrot, M., 2002,
The micro-satellite
Demeter: Data
registration and
data processing,
in Seismo
Electromagnetics
lithosphere
– Atmosphere
– Ionosphere
Coupling, ed. by
Hayakawa, M.
and Molchanov , O. A., Y., Terra
Sci, pub. Co. Tokya, pp. 391-395.
Pokhotelov, O.A. et al., Response
of the ionosphere to natural and
man made acoustic sources, Ann.
Geophys.,13,1197-1210,1995.
Pulinets, S.A. 1998b Strong
earthquake possibility with the help
of topside sounding from satellites.
Adv. Space Res. 21, 455-458.
Pulinets, S.A., K. A. Boyarchuk, A.
M. Lomonosov, V. V. Khegai, and
J. Y. Liu, Ionospheric Precursors to
Earthquakes: A Preliminary Analysis of
the foF2 Critical Frequencies at Chung-
Li Ground-Based Station for Vertical
Sounding of the Ionosphere (Taiwan
Island), Geomagnetism and Aeronomy,
2002, 42, No. 3, pp.508-513.
Pulinets, S., Boyarchuk , K.,
2003, ‘Ionospheric Precursors
of Earthquakes’, pub., Springer
Berlin Heidelberg, New York.
Prof. A. K. Gwal
Dean, Faculty of Science
and Head, Department
of Physics, Barkatullah
University, Bhopal, India.
splakg@sancharnet.in
Abhishek Shrivastava
Junior Research Fellow
under DST Project
at Space Science
Laboratory, Barkatullah
University. hopeeverexi
sts@rediffmail.com
Kalpana Malhotra
Senior Research
Fellow under Indo
French Center for
the Promotion of
Advanced Research
(IFCPAR) Project at Space Science
Laboratory, Barkatullah University.
kmalhotra111@rediffmail.com
30 August 2006