Sentence examples for magnetic variations at from inspiring English sources

PSDs of magnetic variations at three stations, HRN, MAW and BJN, are shown in top panels of (a) and (b).

Spectra of ground magnetic variations at high latitudes for the first interval are presented in the right panel of Fig. 8(a).

The ratio between the spectral densities of TEC and X-component magnetic variations at this frequency was ΔN T f)/ΔB(f) ~ 2 × 10−3 TECu/nT.

At least two other magnetospheric current systems, the neutral sheet and ring currents, may also make contributions to the quiet magnetic variations at the surface of the Earth (Olsen 1996).

Figure 4 shows an expanded view of the magnetic variations at TRO and Abisko (ABK) from 23:50 to 00 45 UT (from 01 50 to 02 45 MLT) on March 8 9.

Fig. 2. (a) GTL data (V xx, B yy and normalized amplitude, dB T /Bav) in field-aligned coordinates, solar wind dynamic pressure (P d ) and IMF variations (ACE data, time shifted by 66.3 min) are shown along with high-pass-filtered magnetic variations at FCC.

Significant changes in the magnetic variation at GTL are clearly noted.

Fig. 8. Power spectral density of the magnetic variation at Aso station.

The diurnal magnetic variation at the geomagnetic equator is often depressed substantially during disturbed periods (Matsushita and Balsley 1972).

This difference suggests that the location of the resonance which caused the magnetic variation at Memambetsu was different from that of the pressure data observed near the epicenter.

In conclusion, if the earth is composed of a highly-conducting upper layer above a poorly-conducting bottom the time behaviour of the horizontal electric field follows that of the perpendicular horizontal magnetic variation at the earth's surface.