GPS TEC response to the 22 July 2009 total solar eclipse in East Asia

2010 ◽  
Vol 115 (A7) ◽  
Author(s):  
Feng Ding ◽  
Weixing Wan ◽  
Baiqi Ning ◽  
Libo Liu ◽  
Huijun Le ◽  
...  
Keyword(s):  
East Asia ◽  
Solar Eclipse ◽  
Total Solar Eclipse ◽  
Gps Tec

scholarly journals Response of the equatorial ionosphere to the total solar eclipse of 22 July 2009 and annular eclipse of 15 January 2010 as observed from a network of stations situated in the Indian longitude sector

2011 ◽  
Vol 29 (10) ◽  
pp. 1955-1965 ◽  
Author(s):  
A. Paul ◽  
T. Das ◽  
S. Ray ◽  
A. Das ◽  
D. Bhowmick ◽  
...  
Keyword(s):  
Solar Eclipse ◽  
Equatorial Ionosphere ◽  
Total Solar Eclipse ◽  
Solar Disc ◽  
Dual Frequency ◽  
Gps Tec ◽  
Solar Eclipses

Abstract. Dual-frequency GPS TEC monitors have been used to study the response of the ionosphere to the solar eclipses of 22 July 2009 and 15 January 2010. The receivers were located at three stations, Calcutta, Kharagpur and Baharampore which are situated outside the umbra zone in the Indian longitude sector with each baseline being ~200 km. Effects of obscuration of the solar disc were noted in the ambient TEC recorded at the three stations. A series of depletions in TEC along the track of a GPS satellite and associated wave-like structures were identified on some GPS links during both the eclipses.

scholarly journals GPS-TEC observations over Nepal during the Total Solar Eclipse on 22 July 2009

2021 ◽  
Vol 7 (1) ◽  
pp. 54-59
Author(s):  
A. N. Shrestha ◽  
Y. Migoya-Orue
Keyword(s):  
Global Positioning System ◽  
Solar Eclipse ◽  
Total Solar Eclipse ◽  
Electron Content ◽  
Positioning System ◽  
Total Electron ◽  
Ionospheric Response ◽  
Gps Tec ◽  
Global Positioning ◽  
Geographical Locations

This paper explores the ionospheric response in terms of Total Electron Content (TEC) during the 22 July 2009 Total Solar Eclipse. Using the data stored at Biratnagar (BRN2), Ramite (RMTE), Dhangadhi (DNGD), Nepalganj (NPGJ), and Taplejung (TPLJ) Global Positioning System (GPS) stations, the ionospheric activity was investigated through changes in TEC. Our research is based on GPS-TEC measurements from a widely dispersed GPS network across various geographical locations in Nepal, taking place on July 17-21 as a pre-event, July 22 as the main event, and July 23-27 as a post-event. The analysis reveals that the reduction in the TEC level is proportional to the magnitude of the total solar eclipse. The variation of the TEC depends on latitude as well as longitude. We found that TEC depletion was up to 5% from pre-event to main-event and up to 30% from main-event to post-event during the totality of the eclipse. The eclipse was accompanied by the 10-hour geomagnetic storm in Nepal, which was the explanation for the TEC upgrade to 50% on the main event day from pre-event and decreased by 25% from main-event to post-event. The result obtained in this work demonstrates the influence of the eclipse/storm on the variation of TEC.

Very High Resolution Analysis of the Dynamics of a Coronal Plasmoid

1994 ◽  
Vol 144 ◽  
pp. 593-596
Author(s):  
O. Bouchard ◽  
S. Koutchmy ◽  
L. November ◽  
J.-C. Vial ◽  
J. B. Zirker
Keyword(s):  
High Resolution ◽  
Solar Eclipse ◽  
Total Solar Eclipse ◽  
Field Of View ◽  
Small Field ◽  
High Resolution Analysis ◽  
Ccd Observations ◽  
Resolution Analysis ◽  
Very High ◽  
Small Field Of View

AbstractWe present the results of the analysis of a movie taken over a small field of view in the intermediate corona at a spatial resolution of 0.5“, a temporal resolution of 1 s and a spectral passband of 7 nm. These CCD observations were made at the prime focus of the 3.6 m aperture CFHT telescope during the 1991 total solar eclipse.

FeXIV Line Emission Polarization of the July 11, 1991 Solar Corona

1994 ◽  
Vol 144 ◽  
pp. 541-547
Author(s):  
J. Sýkora ◽  
J. Rybák ◽  
P. Ambrož
Keyword(s):  
High Resolution ◽  
Solar Corona ◽  
Emission Line ◽  
Solar Eclipse ◽  
White Light ◽  
Preliminary Analysis ◽  
Line Emission ◽  
Total Solar Eclipse ◽  
Degree Of Polarization ◽  
High Resolution Images

AbstractHigh resolution images, obtained during July 11, 1991 total solar eclipse, allowed us to estimate the degree of solar corona polarization in the light of FeXIV 530.3 nm emission line and in the white light, as well. Very preliminary analysis reveals remarkable differences in the degree of polarization for both sets of data, particularly as for level of polarization and its distribution around the Sun’s limb.

The Total Solar Eclipse of June 8, 1918

1917 ◽  
Vol 83 (2145supp) ◽  
pp. 93-93
Author(s):  
Edison Pettit
Keyword(s):  
Solar Eclipse ◽  
Total Solar Eclipse

scholarly journals Observations of the solar corona during the total solar eclipse on 21 August 2017

2017 ◽  
Vol 1 (1) ◽  
pp. 68-71 ◽  
Author(s):  
Hui Tian ◽  
◽  
ZhongQuan Qu ◽  
YaJie Chen ◽  
LinHua Deng ◽  
...  
Keyword(s):  
Solar Corona ◽  
Solar Eclipse ◽  
Total Solar Eclipse
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