Ionospheric Anomalies Observed by GPS TEC Prior to the Qinghai-Tibet Region Earthquakes
نویسندگان
چکیده
منابع مشابه
Ionospheric total electron content (TEC) studies with GPS in the equatorial region
This paper essentially deals with the effects of equatorial ionization anomaly gradient on space-based navigation systems like GPS. The equatorial region of the ionosphere, which extends about ±30dip about the magnetic equator, is characterized by a steep latitudinal gradient, not only in the maximum ionization but also in the total electron content (TEC), through a major part of the day. This ...
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The Total Electron Content (TEC) measured by the Global Positioning System (GPS) is useful for registering the pre-earthquake ionospheric anomalies appearing before a large earthquake. In this paper the TEC value was predicted using the singular value thresholding (SVT) method. Also, the anomaly is detected utilizing this predicted value and the definition of the threshold value, leading to the...
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The GPS derived TEC disturbances before earthquakes were discovered in the last years using global and regional TEC maps, TEC measurements over individual stations as well as measurements along individual GPS satellite passes. For strong mid-latitudinal earthquakes the seismo-ionospheric anomalies look like local TEC enhancements or decreases located in the vicinity of the forthcoming earthquak...
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Vikram Singh, Vishal Chauhan, O P Singh & Birbal Singh Department of Physics, K P Engineering College, Agra 283 202, India Department of Physics, Faculty of Engineering & Technology, R B S College, Bichpuri, Agra 283 105, India Department of Electronics & Communication Engineering, Faculty of Engineering & Technology, R B S College, Bichpuri, Agra 283 105, India E-mail: [email protected]...
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The Qinghai-Tibet Railway is a key project during China's Tenth Five-Year Plan period. It will be the longest and most elevated railroad built on highlands in the world. The construction and transport conditions are so complicated, such as permafrost, bitter coldness, lack of oxygen and ecological fragility. Therefore advanced technical measures and methods have been used during the constructio...
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ژورنال
عنوان ژورنال: Terrestrial, Atmospheric and Oceanic Sciences
سال: 2011
ISSN: 1017-0839
DOI: 10.3319/tao.2010.08.13.01(tibxs)