Daytime trapped electron intensities at high latitudes at 1100 kilometers

Williams, D. J.; Smith, A. M.

doi:10.1029/jz070i003p00541

Cited by 66 publications

(36 citation statements)

References 7 publications

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“…Some additional condition relating to the magnetosphere or the solar wind must also be involved. The relationship between relativistic electron flux enhancements and increases in the solar wind speed was first reported by Williams and Smith (1965) and Williams (1966) and later by Paulikas and Blake (1979). In a further study, Blake et al (1997) correlated changes in the relativistic electron population with the up-stream solar wind conditions and found that "a large relativistic electron enhancement depends upon a substantial solar wind speed increase associated with a precursor solar wind density enhancement, and, in particular, upon a southward turning of the interplanetary magnetic field".…”

Section: Introductionmentioning

confidence: 96%

The relativistic electron response in the outer radiation belt during magnetic storms

et al. 2002

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Abstract. The relativistic electron response in the outer radiation belt during magnetic storms has been studied in relation to solar wind and geomagnetic parameters during the first six months of 1995, a period in which there were a number of recurrent fast solar wind streams. The relativistic electron population was measured by instruments on board the two microsatellites, STRV-1a and STRV-1b, which traversed the radiation belt four times per day from L ∼1 out to L ∼7 on highly elliptical, near-equatorial orbits. Variations in the E > 750 keV and E > 1 MeV electrons during the main phase and recovery phase of 17 magnetic storms have been compared with the solar wind speed, interplanetary magnetic field z-component, B z , the solar wind dynamic pressure and D st *. Three different types of electron responses are identified, with outcomes that strongly depend on the solar wind speed and interplanetary magnetic field orientation during the magnetic storm recovery phase. Observations also confirm that the L-shell, at which the peak enhancement in the electron count rate occurs has a dependence on D st *.

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Section: Introductionmentioning

confidence: 96%

The relativistic electron response in the outer radiation belt during magnetic storms

et al. 2002

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“…Indeed, major increases in trapped-electron [Williams and Smith, 1965;Pfitzer et al, 1966;Craven, 1966;Soraas and Davis, 1968;Bostrom et al, 1970;Williams, 1975J andin trapped-ion [Frank, 1967;Frank and Owens, 1970;Smith and Hoffman, Copyright 1993 by the American Geophysical Union.…”

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confidence: 99%

Stormtime transport of ring current and radiation belt ions

Chen¹,

Schulz²,

Lyons³

et al. 1993

J. Geophys. Res.

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TECHNOLOGY OPERATIONSThe Aerospace Corporation functions as an "architect-engineer" for national security programs, specializing in advanced military space systems_ The Corporation's Technology Operations supports the effective and timely development and operation of national security systems through scientific research and the application of advanced technology. Vital to the success of the Corporation is the technical staffs wide-ranging expertise and its ability to stay abreast of new technological developments and program support issues associated with rapidly evolving space systems. Contributing capabilities are provided by these individual Technology Centers:Electronics Technology Center: Microelectronics, solid-state device physics, VLSI reliability, compound semiconductors, radiation hardening, data storage technologies, infrared detector devices and testing; electro-optics, quantum electronics, solid-state lasers, optical propagation and communications; cw and pulsed chemical laser development, optical resonators, beam control, atmospheric propagation, and laser effects and countermeasures; atomic frequency standards, applied laser spectroscopy, laser chemistry, laser optoelectronics, phase conjugation and coherent imaging, solar cell physics, battery electrochemistry, battery testing and evaluation.Mechanics and Materials Technology Center: Evaluation and characterization of new materials: metals, alloys, ceramics, polymers and their composites, and new forms of carbon; development and analysis of thin films and deposition techniques; nondestructive evaluation, component failure analysis and reliability; fracture mechanics and stress corrosion; development and evaluation of hardened components; analysis and evaluation of materials at cryogenic and elevated temperatures; launch vehicle and reentry fluid mechanics, heat transfer and flight dynamics; chemical and electric propulsion; spacecraft structural mechanics, spacecraft survivability and vulnerability assessment; contamination, thermal and structural control; high temperature thermomechanics, gas kinetics and radiation; lubrication and surface phenomena.Space and Environment Technology Center: Magnetospheric, auroral and cosmic ray physics, wave-particle interactions, magnetospheric plasma waves; atmospheric and ionospheric physics, density and composition of the upper atmosphere, remote sensing using atmospheric radiation; solar physics, infrared astronomy, infrared signature analysis; effects of solar activity, magnetic storms and nuclear explosions on the earth's atmosphere, ionosphere and magnetosphere; effects of electromagnetic and particulate radiations on space systems; space instrumentation; propellant chemistry, chemical dynamics, environmental chemistry, trace detection; atmospheric chemical reactions, atmospheric optics, light scattering, state-specific chemical reactions and radiative signatures of missile plumes, and sensor out-offield-of-view rejection. Author (revised) ABS: This is an investigation of stormtime particle transport tha...

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“…Since hm emission activity is often observed to increase several days after the beginning of a magnetic storm (as discussed further below), the observations reported above are only suggestive of a close correlation. It may also be of interest that in recent satellite measurements (Williams and Smith, 1965), it has been found that at L>3, the intensities of relatively high energy trapped electons (>280keV and >1.2 MeV) tend to peak 2-4 days after the start of a magnetic storm.…”

Section: Correlations Between Occurrences Of Hm Emissions and Othermentioning

confidence: 99%

Recent Investigations of Hydromagnetic Emissions Part I. Experimental Observations

Tepley

1966

J. geomagn. geoelec

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A review is presented of some of the more important properties of Pc 1(0.2-5cps) emissions observed at middle and low latitudes. Special attention is given to fine structured These include latitude variations of emission frequency, fine structure repetition period, and signal amplitude.In addition to the aspects of the Pc 1 emissions outlined above, properties of two other types of emissions are briefly discussed. One of these signals, referred to here as a "continuous emission" also lies in the Pc 1 category. It is often observed continuously throughout the night and is characterized by a slow variation of f -t characteristics.The other signal, which might be placed in a Pc 1-Pi 1 transition category, is observed during magnetically disturbed periods. On sonagrams it is characterized by an irregularly spaced rising frequency fine-structure. When monitored aurally on time-compressed magnetic tape (speedup factor of 1000-2000, it is characterized by a sound similar to bubbles blown under water.

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Daytime trapped electron intensities at high latitudes at 1100 kilometers

Cited by 66 publications

References 7 publications

The relativistic electron response in the outer radiation belt during magnetic storms

The relativistic electron response in the outer radiation belt during magnetic storms

Stormtime transport of ring current and radiation belt ions

Recent Investigations of Hydromagnetic Emissions Part I. Experimental Observations

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