Bibliography

Bol'shakova and Troitskaya, 1968

Bol'shakova, O. V., and V. A. Troitskaya, Relation of the IMF direction to the system of stable oscillations, Dokl. Akad.Nauk. SSSR, 180, 343, 1968.

Greenstadt et al., 1980

Greenstadt, E. W., C. T. Russell, and M. M. Hoppe, Magnetic field orientation and suprathermal ion streams in the Earth's foreshock, , 85, 3473, 1980.

Greenstadt and Olson, 1977

Greenstadt, E. W., and J. V. Olson, A contribution to ULF activity in the Pc 3-4 range correlated with IMF radial orientation, J. Geophys. Res., 82, 4991, 1977.

Gul'elmi, 1974

Gul'elmi, A. V., Diagnostics of the magnetosphere and interplanetary medium by means of pulsations, Space Sci. Rev., 16, 331, 1974.

Hoppe et al., 1981

Hoppe, M. M., C. T. Russell, L. A. Frank, T. E. Eastman, and E. W. Greenstadt, Upstream hydromagnetic waves and their association with backstreaming ion population: ISEE 1 and 2 observations, J. Geophys. Res., 86, 4471, 1981.

Le, 1991

Le, G., Generation of upstream ULF waves in the Earth's foreshock, Ph.D. dissertation, 230 pp., University of California, Los Angeles, CA, June 1991.

Le and Russell, 1990

Le, G., and C. T. Russell, Observations of the magnetic fluctuation enhancement in the Earth's foreshock region, Geophys. Res. Lett., 17, 905, 1990.

Le and Russell, 1992

Le, G., and C. T. Russell, A study of ULF wave foreshock morphology, I. ULF foreshock boundary, Planet. Space Sci., 40, 1203, 1992.

Le et al., 1999

Le, G., C. T. Russell, and S. M. Petrinec, The magnetosphere on May 11, 1999, the day the solar wind almost disappeared: I. Current systems, Geophys. Res. Lett., submitted, 1999.

Lepping et al., 1995

Lepping, R. P., et al., The Wind magnetic field investigation, Space Sci. Rev., 71, 207, 1995.

Luhmann et al., 1986

Luhmann, J. G., C. T. Russell, and R. C. Elphic, Spatial distribution of magnetic field fluctuations in the dayside magnetospheath, J. Geophys. Res., 91, 1711, 1986.

Odera, 1986

Odera, T. J., Solar wind controlled pulsations: A review, it Rev. Geophys., 24, 55, 1986.

Russell et al., 1995

Russell, C. T., R. C. Snare, J. D. Means, D. Pierce, D. Dearborn, M. Larson, G. Barr, and G. Le, The GGS/Polar magnetic fields investigation, it Space Sci. Rev., 71, 563, 1995.

Singer et al., 1977

Singer, H. J., C, T. Russell, M. G. Kivelson, E. W. Greenstadt, and J. V. Olson, Evidence of the control of Pc 3, 4 magnetic pulsation by the solar wind velocity, Geophys. Res. Lett., 4, 377, 1977.

Troitskaya, 1994

Troitskaya, V. A., History of the study of upstream sources of ULF waves, in Solar Wind Sources of Magnetospheric Ultra-Low-Frequency Waves, edited by M. Engebretson, K. Takahashi and M. Scholer, Geophys. Monogr. Ser. 81, pp. 45, American Geophysics Union, Washington, D. C., 1994.

Troitskaya et al., 1971

Troitskaya, V. A., T. A. Plyasova-Bakunina, and A. V. Gul'elmi, Relationship between Pc 2-4 pulsations and the interplanetary field, Dokl. Aka. Nauk. SSSR, 197, 1313, 1971.

 

Figure 1: Schematic of foreshock geometry and spacecraft locations in the V-B plane (the plane that contains the solar wind velocity and the IMF) for 01-11 UT, May 11.

 

Figure 2: Simultaneous observed magnetic field data in the foreshock (red) and in the undisturbed solar wind (blue) on May 11. The top panels are time series of the magnetic field. The bottom panels are corresponding power spectra (the sum of power in all three components).

 

Figure 3: Dynamic power spectra of Polar magnetic field data in By GSM component from 07 to 10 UT on May 11 (top) and May 14 (bottom).

 

Figure 4: Dynamic power spectra of the H-component of ground-based magnetic field from IGPP/LANL mid-latitudes stations AFA, LAL, and SGD.