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Total Electron Content

Manifestations of the earthquake preparations in the ionosphere total electron content variations

Manifestations of the earthquake preparations in the ionosphere total electron content variations

... Recent ionospheric observations report anoma- lous total electron content (TEC) deviations prior strong earthquakes. We discuss common fea- tures of the pre-earthquake TEC disturbances on the basis ...

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Temporal Variation of Ionospheric Scintillation in Relation with Ionospheric Total Electron Content (TEC) over Ethiopia

Temporal Variation of Ionospheric Scintillation in Relation with Ionospheric Total Electron Content (TEC) over Ethiopia

... day time with a small frequency and relatively moderate scintillation occurrence during the night time with very frequent occurrence of scintillation. Whereas the vertical total electron content ...

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Comparison of Global Vertical Total Electron Content from Various Global Data Centers

Comparison of Global Vertical Total Electron Content from Various Global Data Centers

... vertical total electron contents are derived from Global Positioning System (GPS) networks ...vertical electron conten distribution ...vertical total electron content data sets ...

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The Calculation and Analysis of the Total Electron Content Over Different Latitudes and Seasons Using the Numerical Trapezoidal and Simpson Methods

The Calculation and Analysis of the Total Electron Content Over Different Latitudes and Seasons Using the Numerical Trapezoidal and Simpson Methods

... Users of satellite navigation and satellite communication systems need to assess and monitor ionospheric effects which may degrade their performance (1). The earth's ionosphere is an important error source for global ...

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Observations and modeling of 630 nm airglow and total electron content associated with traveling ionospheric disturbances over Shigaraki, Japan

Observations and modeling of 630 nm airglow and total electron content associated with traveling ionospheric disturbances over Shigaraki, Japan

... provided total electron content (TEC) between the GPS altitude (20,200 km) and the ...an electron density fluctuation of about ± 20% occurring around an altitude of 250 km, where the 630 nm ...

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Determination of Total Electron Content at Equatorial Region—Thailand Using Radio Occultation Technique

Determination of Total Electron Content at Equatorial Region—Thailand Using Radio Occultation Technique

... Ionosphere is the upper layer of the Earth atmosphere which has a great impact on signal from telecommunica- tion system. It consists of free electrons and ions that are mostly concentrated in the F-region and produced ...

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Total Electron Content and Anomalous Appearance of GPS Satellites as Pointers to Epicentre Identification of Major Japan Earthquake of 2011

Total Electron Content and Anomalous Appearance of GPS Satellites as Pointers to Epicentre Identification of Major Japan Earthquake of 2011

... as Total Electron Content (TEC) relevant to upper atmosphere (ionosphere), are used as instruments for identification of impending earthquake signatures ...

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Analysis of Ionospheric Vertical Total Electron Content before the 2014 Mw8.2 Chile Earthquake

Analysis of Ionospheric Vertical Total Electron Content before the 2014 Mw8.2 Chile Earthquake

... Abstract: This paper studies ionospheric vertical total electron content (VTEC) variations before the 2014 Mw8.2 Chile earthquake. VTEC derived from 14 GPS (Global Positioning System) stations and ...

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Variations in the total electron content near the crest of the equatorial ionization anomaly during the November 2004 geomagnetic storm

Variations in the total electron content near the crest of the equatorial ionization anomaly during the November 2004 geomagnetic storm

... Space weather studies using a Global Positioning System (GPS) receiver are underway near the crest of the equatorial ionization anomaly (EIA), at Udaipur (MLAT 16.0 ◦ N), India. These studies are probably, the first of ...

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GPS detection of total electron content variations over Indonesia and Thailand following the 26 December 2004 earthquake

GPS detection of total electron content variations over Indonesia and Thailand following the 26 December 2004 earthquake

... We report the response of the ionosphere to the large earthquake that occurred in West Sumatra, Indonesia, at 0058 UT on December 26, 2004. We have analyzed Global Positioning System (GPS) data obtained at two sites in ...

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Validation and application of optimal ionospheric shell height model for single site estimation of total electron content

Validation and application of optimal ionospheric shell height model for single site estimation of total electron content

... Abstract. We recently proposed a method to establish an optimal ionospheric shell height model based on the inter- national GNSS service (IGS) station data and the differen- tial code bias (DCB) provided by the Center ...

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L band scintillations and calibrated total electron content gradients over Brazil during the last solar maximum

L band scintillations and calibrated total electron content gradients over Brazil during the last solar maximum

... This work presents a contribution to the understanding of the ionospheric triggering of L-band scintillation in the region over São Paulo state in Brazil, under high solar activity. In particular, a climatological ...

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Annual Mean and Correlation of Global Vertical Total Electron Content from Various Global Data Centers

Annual Mean and Correlation of Global Vertical Total Electron Content from Various Global Data Centers

... vertical total electron content provided by GPS, Center for Orbit Determination in Europe (CODE), Jet Propulsion Laboratory (JPL), Polytechnical University of Catalonia (UPC) and European Space ...

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Ionospheric disturbances detected by GPS total electron content observation after the 2011 off the Pacific coast of Tohoku Earthquake

Ionospheric disturbances detected by GPS total electron content observation after the 2011 off the Pacific coast of Tohoku Earthquake

... All the details of ionospheric disturbances following the 2011 Tohoku Earthquake were first revealed by the high-resolution GPS total electron content observation in Japan. The initial ionospheric ...

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Monitoring the ionospheric total electron content variations over the Korean Peninsula using a GPS network during geomagnetic storms

Monitoring the ionospheric total electron content variations over the Korean Peninsula using a GPS network during geomagnetic storms

... Many researchers have developed ionospheric models to derive GPS-TECs (Sardon et al., 1994). Recently, some researchers have used GPS network data to study iono- spheric irregularities (Otsuka et al., 2002; Jin et al., ...

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Variation of Total Electron Content (TEC) in the Quite and Disturbed days and their correlation with Geomagnetic Parameters of Lamjung Station in the year of 2015

Variation of Total Electron Content (TEC) in the Quite and Disturbed days and their correlation with Geomagnetic Parameters of Lamjung Station in the year of 2015

... Total Electron content (TEC) is measured using a dual frequency GPS receiver in Lamgung (LMJG) Station located at 84.57° longitude and 28.17° latitude of the year 2015 as it is considered as ...

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An experiment of predicting Total Electron Content (TEC) by fuzzy inference systems

An experiment of predicting Total Electron Content (TEC) by fuzzy inference systems

... The Total Electron Content (TEC) is predicted by fuzzy inference systems for various station-satellite ...vertical total electron content (VTEC) using differenced ...

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The correlation between total electron content variations and solar activity

The correlation between total electron content variations and solar activity

... the total electron content (TEC) varies caused by a several factors such as local time (LT), latitude, longitude, season, geomagnetic conditions, solar cycle and activity, and so ...

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Delayed response of the global total electron content to solar EUV variations

Delayed response of the global total electron content to solar EUV variations

... the Total Electron Content (TEC), which is the vertically inte- grated electron density of the ionosphere/plasmasphere sys- tems, often given in terms of TEC Units (TECU, 1 TECU = 10 16 ...

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A new technique for mapping of total electron content using GPS network in Japan

A new technique for mapping of total electron content using GPS network in Japan

... the total number of electrons, called total electron content (TEC), along a ray path from GPS satellite to ...for electron contents based on the IRI-95 ...simultaneous electron ...

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