Ionospheric Total Electron Content (TEC) Anomalies Associated with Earthquakes through Karhunen-Loéve Transform (KLT)
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 ...
متن کاملIonospheric total electron content variations observed before earthquakes: Possible physical mechanism and modeling
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...
متن کاملSolar flare signatures of the ionospheric GPS total electron content
6 [1] In this study, ionospheric solar flare effects on the total electron content (TEC) and 7 associated time rate of change (rTEC) derived from ground-based global positioning 8 system (GPS) receivers in the midday region are examined. The occurrence times and 9 locations of 11 solar flares are isolated from the 1–8 Å X-ray radiations of the 10 geosynchronous operational environmental satelli...
متن کاملTotal Ionospheric Electron Content Calibration Using SERIES GPS Satellite Data
This article describes the current status of the Deep Space Network advanced systems research into ionospheric calibration techniques, based on Global Positioning System (GPS) data. A GPS-based calibration system is planned to replace the currently used Faraday rotation method by 1989. The SERIES receiver system used in this research determines the differential group delay of signals transmitte...
متن کاملThermal radiation anomalies associated with major earthquakes
29 Recent developments of remote sensing methods for Earth satellite data analysis 30 contribute to our understanding of earthquake related thermal anomalies. It was realized 31 that the thermal heat fluxes over areas of earthquake preparation is a result of air 32 ionization by radon (and other gases) and consequent water vapor condensation on newly 33 formed ions. Latent heat (LH) is released...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Terrestrial, Atmospheric and Oceanic Sciences
سال: 2010
ISSN: 1017-0839
DOI: 10.3319/tao.2009.06.11.01(t)