Topic
Total electron content
About: Total electron content is a research topic. Over the lifetime, 3999 publications have been published within this topic receiving 73935 citations.
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15 Nov 2020
TL;DR: In this article, the two most intense geomagnetic storms during the 24th solar cycle, with similarly occurrence season and time were studied, and it was observed that ionospheric effect during the main phase is not a function of the severity of the storm, whereas the more intense storm shows greater influence on the African ionosphere during the recovery phase.
Abstract: Intense geomagnetic storms offer opportunity to understand ionospheric response to space weather events. Using Total Electron Content (TEC) data from stations along the east African sector, the two most intense storms during the 24th solar cycle, with similarly occurrence season and time were studied. We observe that ionospheric effect during the main phase is not a function of the severity of the storm, whereas the more intense storm shows greater influence on the African ionosphere during the recovery phase. Plasma movement within the equatorial ionization anomaly (EIA) was evident particularly during the recovery phase, especially during the 2015 event. For both storms, the nighttime/early morning ionospheric effect is more pronounced than the daytime effects across all stations.
01 Jan 2009
TL;DR: In this article, the detection of Travelling Ionospheric Disturbances (TIDs) during geomagnetic storms event at Malaysia ionosphere was revealed by using Global Positioning System (GPS) dual frequency data in RINEX format.
Abstract: This project focuses on revealing the detection of Travelling Ionospheric Disturbances (TIDs) during geomagnetic storms event at Malaysia ionosphere. The essential parameter to be studied is Total Electron Content (TEC) that extracted using Global Positioning System (GPS) dual frequency data which in RINEX format that supplied by Department Of Survey and Mapping Malaysia (JUPEM). The data was analysed from 11 March 2007 to 15 March 2007 and observed from receiver station located at Universiti Teknologi Malaysia, Johor (Latitude (N) 1.6 0 Longitude (E) 103.6 0 ). The values of TIDs are compared base on variability value of daily Kp index prepared by World Data Centre System for Geomagnetism (WDC), Kyoto, Japan.
19 Dec 2019
TL;DR: In this article, preliminary results from the ANN-based model developed at IIT Indore have been presented One year hourly total electron content (TEC) database has been created from the International Reference Ionosphere (IRI)—2016 model For the first time, a reverse problem has been addressed, wherein the training has been performed for predicting the three indices: 13-month running sunspot number, ionospheric index and daily solar radio flux also called targets to the network when hourly TEC values are the inputs.
Abstract: In this paper, preliminary results from the artificial neural network (ANN)-based model developed at IIT Indore have been presented One year hourly total electron content (TEC) database has been created from the International Reference Ionosphere (IRI)—2016 model For the first time, a reverse problem has been addressed, wherein the training has been performed for predicting the three indices: 13-month running sunspot number, ionospheric index and daily solar radio flux also called targets to the network when hourly TEC values are the inputs The root mean square errors (RMSEs) of these targets have been compared and minimized after several training of the dataset using different sets of combinations Unknown data fed to the network yielded 099%, 312% and 090% errors for Rz12, IG12 and F107 radio flux, respectively, thus signifying ~97% prediction accuracy of the model
01 Jan 1963
TL;DR: In this article, a method for measuring total electron content by observing the Faraday effect on satellite beacon transmitters at a station located on the magnetic equator was presented, which was applied to data observed at Huancayo, Peru, between September 1961 and February 1962.
Abstract: A method is presented for measuring total electron contentby observing the Faraday effect on satellite beacon transmittersat a station located on the magnetic equator. This method is ap-plied to data observed at Huancayo, Peru, between September 1961and February 1962. The total electron content at the magneticequator was found to have nearly a 10 to 1 diurnal variation witha maximum of4× I017electrons/m 2near 1500 hours. Values ofthe thickness parameter (f
TL;DR: The compensation method identifies and fills a gap in the utilization of the under-sampled second-level phase data for estimating S 4, and thus enables routine GNSS phase measurement to trace the ionospheric irregularities at a small or intermediate scale.