Total Electron Content (tec)
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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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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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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Comparison of Global Vertical Total Electron Content from Various Global Data Centers
... Usually, the single ionospheric layer assumption is considered to convert the slant path TEC to vertical TEC with a mapping function. In this work, five analysis centers routinely provide GIMs of vertical TEC using the ...
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Determination of Total Electron Content at Equatorial Region—Thailand Using Radio Occultation Technique
... the total electron content (TEC) which is a major challenge to space and related industries, most especially in an equatorial region like Thailand within the geographical latitude 07˚35'N - ...and ...
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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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Variations of f oF2 and GPS total electron content over the Antarctic sector
... of total electron content data (TEC) over the last ten years has largely come from a rapid increase in the number of Global Position- ing System receiver stations available from which TEC data (GPS ...
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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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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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The Calculation and Analysis of the Total Electron Content Over Different Latitudes and Seasons Using the Numerical Trapezoidal and Simpson Methods
... 5. Rajkumar H, Shyamal KC, Bruce TT, Ashish DG, Ezequiel E, Christiano GM, et al. An empirical model of ionospheric total electron content (TEC) near the crest of the equatorial ionization anomaly ...
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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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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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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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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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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 one of the important tools to study ionosphere which holds many unsolved mysteries of our ...the total number of electrons in a vertical column of 1 𝑚 2 ...
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Morphology and dynamics of daytime mid latitude sporadic E patches revealed by GPS total electron content observations in Japan
... 2002, 2004; Larsen et al. 2007). For example, Hysell et al. (2009) used a coherent scatter radar (CSR) at St. Croix, US Virgin Islands, the Caribbean Sea, to observe Es. They revealed horizontal structures of ...
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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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Monitoring the ionospheric total electron content variations over the Korean Peninsula using a GPS network during geomagnetic storms
... We have established a regional ionospheric model (RIM) for investigating changes in the total electron content (TEC) over South Korea using 38 Korean GPS reference stations. The inverse distance ...
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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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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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