Seismo-Ionospheric is a study of ionosphere disturbances associated with seismic activities. In many previous researches, heliogeomagnetic or strong earthquake activities can caused the disturbances in the ionosphere. However, it is difficult to separate these disturbances based on related sources. In this research, we proposed a method to separate these disturbances/outliers by using nu-SVR with the world-wide GPS data. TEC data related to the 26th December 2004 Sumatra and the 11th March 2011 Honshu earthquakes had been analyzed. After analyzed TEC data in several location around the earthquake epicenter and compared with geomagnetic data, the method shows a good result in the average to detect the source of these outliers. This method is promising to use in the future research.

1.
E. L.
Afraimovich
and
E. I.
Astafyeva
.
Tec anomalies–local tec changes prior to earthquakes or tec response to solar and geomagnetic activity changes?
Earth Planets and Space (EPS)
,
60
(
9
):
961
,
2008
.
2.
E. L.
Afraimovich
,
E. I.
Astafieva
,
M. B.
Gokhberg
,
V. M.
Lapshin
,
V. E.
Permyakova
,
G. M.
Steblov
, and
S. L.
Shalimov
.
Variations of the total electron content in the ionosphere from gps data recorded during the hector mine earthquake of october 16, 1999, california
.
Russian Journal of Earth Sciences
,
6
(
5
):
339
354
,
2004
.
3.
M.
Akhoondzadeh
. Support vector machines for tec seismo-ionospheric anomalies detection. In
Annales Geophysicae
, volume
31
, pages
173
186
.
Copernicus GmbH
,
2013
.
4.
E.
Astafyeva
and
K.
Heki
.
Vertical tec over seismically active region during low solar activity
.
Journal of Atmospheric and Solar-Terrestrial Physics
,
73
(
13
):
1643
1652
,
2011
.
5.
C. C.
Chang
and
C. J.
Lin
.
LIBSVM: A library for support vector machines
.
ACM Transactions on Intelligent Systems and Technology
,
2
:
27:1
27:27
,
2011
.
Software available at
http://www.csie.ntu.edu.tw/∼cjlin/libsvm.
6.
V.
Cherkassky
and
Y.
Ma
.
Practical selection of svm parameters and noise estimation for svm regression
.
Neural networks
,
17
(
1
):
113
126
,
2004
.
7.
V.
Cherkassky
and
F. M.
Mulier
.
Learning from data: concepts, theory, and methods
.
John Wiley & Sons
,
2007
.
8.
L. M.
He
,
L. X.
Wu
,
A.
De Santis
,
S. J.
Liu
, and
Y.
Yang
. Is there a one-to-one correspondence between ionospheric anomalies and large earthquakes along longmenshan faults? In
Annales Geophysicae
, volume
32
, pages
187
196
.
Copernicus GmbH
,
2014
.
9.
F.
Masci
.
The study of ionospheric anomalies in japan area during 1998–2010 by kon et al.: An inaccurate claim of earthquake-related signatures?
Journal of Asian earth sciences
,
57
:
1
5
,
2012
.
10.
N. P.
Perevalova
,
V. A.
Sankov
,
E. I.
Astafyeva
, and
A. S.
Zhupityaeva
.
Threshold magnitude for ionospheric response ionospheric tec response to earthquakes
.
Journal of Atmospheric and Solar-Terrestrial Physics
,
108
:
77
90
,
2014
.
11.
S.
Pulinets
and
D.
Davidenko
.
Ionospheric precursors of earthquakes and global electric circuit
.
Advances in Space Research
,
53
(
5
):
709
723
,
2014
.
12.
S. A.
Pulinets
,
T. B.
Gaivoronska
,
A. L.
Contreras
, and
L.
Ciraolo
.
Correlation analysis technique revealing ionospheric precursors of earthquakes
.
Natural Hazards and Earth System Science
,
4
(
5/6
):
697
702
,
2004
.
13.
S. A.
Pulinets
,
V. G.
Bondur
,
M. N.
Tsidilina
, and
M. V.
Gaponova
.
Verification of the concept of seismoionospheric coupling under quiet heliogeomagnetic conditions, using the wenchuan (china) earthquake of may 12, 2008, as an example
.
Geomagnetism and Aeronomy
,
50
(
2
):
231
242
,
2010
.
14.
S.
Schaer
,
W.
Gurtner
, and
J.
Feltens
.
Ionex: The ionosphere map exchange format version 1
. In
Proceedings of the IGS AC workshop
,
Darmstadt, Germany
, volume
9
,
1998
.
15.
B.
Schölkopf
,
A. J.
Smola
,
R. C.
Williamson
, and
P. L.
Bartlett
.
New support vector algorithms
.
Neural computation
,
12
(
5
):
1207
1245
,
2000
.
16.
F.
Zhu
,
Y.
Wu
,
Y.
Zhou
, and
Y.
Gao
.
Temporal and spatial distribution of gps-tec anomalies prior to the strong earthquakes
.
Astrophysics and Space Science
,
345
(
2
):
239
246
,
2013
.
This content is only available via PDF.
You do not currently have access to this content.