GPS-TEC
First GPS TEC evidence for the wave structure excited by the solar terminator
... using TEC measurements from the global network of GPS ...observed TEC disturbance were found: LS variations with an am- plitude of about ...the GPS TEC representation of the ...
6
Comparison of GPS TEC measurements with IRI TEC prediction at the equatorial latitude station, Chumphon, Thailand
... between TEC based on observation and that of the IRI models are ...the GPS TEC data recorded at the equatorial latitudinal lo- cation in Chumphon station, Thailand with the TEC ob- tained from ...
6
Scale factor mitigating non compliance of double frequency altimeter measurements of the ionospheric electron content over the oceans with GPS TEC maps
... of GPS TEC by subtract- ing the ionospheric component measured by TOPEX ...IONEX TEC files and TOPEX IEC files that span the period from July 2001 to December 2008, thus covering half a solar cycle ...
7
Diurnal, seasonal and solar cycle variation in total electron content and comparison with IRI 2016 model at Birnin Kebbi
... vation GPS data files were downloaded daily from the NIGNET website ...and GPS TEC analysis ...The GPS TEC analysis software was designed by Gopi Seemala of the In- dian Institute of ...
15
Ionospheric Anomalies Observed by GPS TEC Prior to the 3rd of July 2013 Uganda’s Earthquake
... the GPS-TEC often decreases anomalously in the afternoon over a period of 1 to 5 days before M ≥ ...uses GPS-TEC data to confirm seismo-ionospheric coupling of an ...
6
Patterns of GPS TEC variation over low latitude regions (African sector) during the deep solar minimum (2008 to 2009) and solar maximum (2012 to 2013) phases
... frequency GPS receivers given in Figure ...the GPS-TEC data observed with the eight GPS receivers have been used for the ...required GPS-VTEC data, the method proposed by Ciraolo et ...
9
Morphology of GPS and DPS TEC over an equatorial station: validation of IRI and NeQuick 2 models
... NeQ TEC is denoted by a blue line with multiplication symbols. All the TEC plots are regulated by the same local time on the horizontal ...of GPS, DPS, and modeled TEC increase gradually from ...
13
Detecting ionospheric TEC perturbations caused by natural hazards using a global network of GPS receivers: The Tohoku case study
... a GPS satellite that is near the lo- cal horizon will travel through the ionosphere at distances exceeding 1500 km from the site continuing on through the lower atmosphere until arriving at the ...Any GPS ...
8
Monitoring of the ionosphere TEC variations during the 17th August 1999 Izmit earthquake using GPS data
... fluence of the North Anatolian Fault, an ideal natural lab- oratory not only for us but also for all scientific people in the world, is very important as the area is in one of the most highly-populated regions of Turkey ...
10
Features of the Ionosphere around the Time of the 5th August, 2014 M5 5 Orkney Earthquake
... the TEC data (between 10:00 hrs and 14:00 hrs) 5 days before the earthquake and 4 days ...the GPS TEC tends to be more pronounced in the afternoon of the days ...the TEC at 14:00UT (16:00LT) ...
7
TEC anomalies—Local TEC changes prior to earthquakes or TEC response to solar and geomagnetic activity changes?
... using GPS TEC measurements performed by a dense network of 256 continuous GPS stations centered in the Los Angeles basin (SCIG ...Network). TEC time series averaged over the entire network ...
6
Probing thermal expansion coefficients of monolayers using surface enhanced Raman scattering
... As the thermal expansion coefficient of the metal is known, it allows us to estimate the TECs of the bare monolayers using SERS. The advantages of our proposed method can be summarized as follows. First, the metallic NPs ...
7
Multi instrument observations of large scale atmospheric gravity waves/traveling ionospheric disturbances associated with enhanced auroral activity over Svalbard
... Figure 2: Auroral electrojet indices: AU and AL (top panel), AE (middle panel) and polar cap index from Thule/Qaanaaq (PCN) (bottom panel) on 6-7 January 2014. The vertical blue dash line roughly indicates occurrence of ...
34
Impact of magnetic storms on the global TEC distribution
... positive TEC bursts occurred in the mid- dle of the recovery phase along the whole of the American and Euro-African meridians as well as in the Southern Hemi- sphere along the Asian-Australian meridian with the ...
15
Tracking F region plasma depletion bands using GPS TEC, incoherent scatter radar, and all sky imaging at Arecibo
... and GPS observations of F-region Medium- Scale Traveling Ionospheric Disturbance (MSTID) structures over the Arecibo Observatory in Puerto ...The GPS-derived total electron content (TEC) data provide ...
14
Monitoring potential ionospheric changes caused by the Van earthquake (Mw7 2)
... models were very close to each other. The F10.7 cm in- dex values between days 288 and 292 were 136.9, 150, 151.6, 145.7, and 146.1 sfu. Nwanko and Chakrabarti (2013) state that while F10.7 cm > 151 sfu is strong ...
9
Foxa1 and Foxa2 in thymic epithelial cells (TEC) regulate medullary TEC and regulatory T cell maturation
... of conditional deletion of Foxa1 and Foxa2 in TEC, Treg selection was increased in the thymus, and the proportion of Tregs were also in- creased in the Foxa1/2Foxn1cKO spleen. It would in the future be in- ...
8
GPS TEC Variation during Low to High Solar Activity Period (2010 2014) under the Northern Crest of Indian Equatorial Ionization Anomaly Region
... of GPS-TEC, particularly during the middle of the day to pre-dawn hours, which is of serious worry in forecasting, as well as in navigation ...in TEC [6] [39] [46] [47] may be attributed to: 1) the ...
24
A study of smoothed TEC precision inferred from GPS measurements
... of TEC data derived from dual frequency GPS measurements observed by GPS reference networks provides a great opportunity for ionosphere ...derived TEC, a data smoothing technique is usually ...
9
Modulation of the ionosphere by Pc5 waves observed simultaneously by GPS/TEC and EISCAT
... and TEC varia- tions is not very stable and does not allow to use it for the model validation and discrimination of possible ...and TEC is calculated along a vertical ...
13