Interplanetary Causes of Great and Superintense Magnetic Storms
We examine possible interplanetary mechanisms for the Creation of the largest magnetic storms at the Earth.
Magnetic Storms↗
Engineering topics
Arballo, J. K.
Publications and source records attributed to Arballo, J. K..
Generation of Broadband Plasma Waves in the Polar Cap Boundary Layer
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plasma broadband POLAR lower-hybrid↗
Excitation of Helicon Modes in the Earth's Plasmasheet
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plasmasheet anisotropis pressure helicon↗
A Global View of Broadband Plasma Observed by Polar and GEOTAIL in the High Latitude Boundary Layer
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Polar plasma broadband plasma waves broadband plas↗
Wideband Plasma Waves in the Polar Cap Boundary Layer: Polar Observations
Recent Polar plasma wave observations indicate that intense wideband waves are always present in the polar cap boundary layer (PCBL) region.
plasma wave data enhanced wideband waves polar cap↗
Arc-Polarized, Nonlinear Alfven Waves and Rotational Discontinuities: Directions of Propogation?
Large amplitude, noncompressive Alfven waves and rotational discontinuities are shown to be arc-polarized. The slowly rotating Alfven wave portion plus the fast rotating discontinuity comprise 360(deg) in phase rotation. The magnetic field vector perturbation lies in a plane. There are two (or more) possible interpretations to the observations.
Alfven waves rotational discontinuities arc-polari↗
Pasma Wave Characteristics of the Jovian Magnetopause Boundary Layer: Can Wave-Particle Interactions Cause the Jovian Aurora?
The full Jovian magnetopause boundary layer (BL) plasma wave spectra from 10(sup -3) to 10(sup 3) Hz, have been measured for the first time...The B'/E' ration does not have a f(sup -1) dependency, so it was suggested that the waves are a mixture of whistler mode electromagnetic emissions and electrostatic waves.
jovian magnetosphere Jupiter Jovian magnetopause E↗
New Predictions of the Jovian Aurora: Location, Latitudinal Width, and Intensity
A model/theory for the Jovian aurora is formed based on a similar model for the dayside aurora at Earth and recent Ulysses field and particle measurements at Jupiter. Items discussed are plasma boundary layer, wave-particle resonant interactions, and the model's prediction of the aurora's location, latitudinal width, and intensity.
Jupiter Jovian Aurora Ulysses Plasma↗
The Sources of Bz Fluctuations within CIRs: Magnetic Storms During the Descending Phase of the Solar Cycle
This presentation examines the magnetic field fluctuations within Corotating Interaction Regions (CIRs) detected by Ulysses at mid- and low-latitudes. CIRs are formed by the interaction of high-speed streams flowing from the polar coronal hole with slow-speed streams. Several wave modes are identified, and the effectiveness of these waves causing magnetic storms at Earth will be discussed.
Space Physics Magnetic Storms Solar Cycles Sun↗
High Heliographic Latitude Tangential Discontinuities Ulysses Observations
Data from the Ulysses spacecraft was used for studying solar tangential discontinuities (TDs) at high latitudes. Significant numbers of TDs seem to exist at these latitudes.
tangential discontinuities Sun Ulysses↗
Interplanetary Origin of Geomagnetic Activity in the Declining Phase of the Solar Cycle
Interplanetary magnetic field and plasma data are compared with ground-based geomagnetic Dst and AE indices to determine the causes of magnetic storms, substorms, and quiet during the descending phase of the solar cycle. The primary focus is on 1974 data characterized by the presence of two long-lasting corotating streams associated with coronal holes.
Space Physics Magnetic Storms Geomagnetics Solar C↗
Interplanetary Discontinuities and Alfven Waves at High Heliographic Latitudes, Ulysses
This paper presents results from the first statistical study of interplanetary directional discontinuities at high heliographic latitudes. Ulysses data showed that the rate of occurrence of interplanetary discontinuities (ROIDs) increased dramatically from the ecliptic plane to high (-80 degrees) heliographic latitudes. The high speed streams included Alfven waves.
solar corona Alfven waves Ulysses↗
Tangential Discontinuities at High Heliographic Latitudes
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ROID Alfven waves solar wind plasma parameters wav↗
The relationship between interplanetary discontinuities and Alfven waves: Ulysses observations
The rate of occurrence of interplanetary discontinuities (ROID) is examined using Ulysses magnetic field and plasma data from 1 to 5 AU radial distance from the Sun and at high heliographic latitudes. We find two regions where the ROID is high: in stream-stream interaction regions and in Alfven wave trains. This latter feature is particularly obvious at high latitudes when Ulysses enters a high speed stream associated with a polar coronal hole. These streams are characterized by the presence of continuous, large-amplitude (Delta (vector 13)/absolute value of B is about 1-2 Alfven waves and an extraordinarily high ROID value (approximately 150 discontinuities/day). In a number of intervals examined, it is found that (rotational) discontinuities are an integral part of the Alfven waves. The nonlinear Alfven waves are spherically polarized, i.e., the tip of the perturbation vector resides on the surface of a sphere (a consequence of constant absolute value of B). The slowly rotating part of the wave rotates approximately 270 deg in phase. There is a slight arc in the B(sub 1) - B(sub 2) hodogram, suggesting an almost linear polarization. The phase rotation associated with the discontinuity is about 90 deg, lies in the same plane as the slowly rotaing part of the Alfven wave, and therefore completes the 360 deg phase rotation. The best description of the overall Alfven wave plus discontinuity is a spherical, arc-polarized, phase-steepened wave.
Tsurutani, B. T.↗