Exact(1)
Models have been developed to present the global picture of the observed signal and aimed to predict the basic features of EEJ signature in longitude, time, day-to-day variations, and seasonal behavior in uncovered regions of ground measurements.
Similar(59)
In order to obtain the background mean temperature and the monthly mean amplitude and phase of the diurnal tides (from zonal wave number −5 to +5), a 2-D Fourier transform in longitude and time is applied to the total temperature to get the spectrum density in the domain of wave frequency and zonal wave number.
They observed the counter-Sq SFE in limited longitude (local time) and latitude sectors (i.e. LT ~ 1030 1300, Dip Lat. ≤ 1.5°).
In the first step, grids covered the range of ±10.0 s in origin time, ±1.0° in longitude and latitude, and ±50 km in depth from the final hypocenter in the MJHD method.
Again we use a robust nonlinear smoother, this time applied to changes in longitude.
Each hour's difference in time means a difference of 15 degrees in longitude.
The electron density is sorted into geographic longitude and magnetic local time (MLT) bins with a resolution of (15^{circ }) in longitude and 1 h in MLT.
* The difference in longitude of two places is equal to the difference in their local times.
In longitude Canada extends from approximately 52° to 141° W, a distance that spans six time zones.
During the time of the final constellation phase considered in this study, the EPIs were more evenly distributed in longitude; however, the increased concurrency between longitude −90° and 0°E is again visible.
Based on the combined GPS and GLONASS observations, these ROTI maps were constructed with high spatial resolution (1° × 1° in geographic latitude and longitude) and time interval of 1 h.
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