Glenn M. Mason

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We have studied fine-scale temporal variations in the arrival profiles of ∼20 keV nucleon to ∼2 MeV 21 nucleon ions from impulsive solar flares using instrumentation on board the Advanced Composition Explorer 21 spacecraft at 1 AU between 1997 November and 1999 July. The particle events often had short-timescale (∼3 hr) variations in their intensity that(More)
The nursing process was originally adopted by the North American nursing profession from the general systems theory (GST) and quickly became a symbol of contemporary nursing as well as a professionalist nurse ideology. In contrast its initial introduction in the United Kingdom (UK) was not a complete success. This could be attributed to the mode of its(More)
[1] Using magnetic field, plasma, and energetic particle data from Wind and ACE, we analyze interplanetary features associated with the first strongly geoeffective interval in the rising phase of solar cycle 23, which affected Earth on 1–4 May 1998. As shown by Skoug et al. [1999], the configuration consisted of a compound stream made up of an(More)
We use combined high-cadence, high-resolution, and multi-point imaging by the Solar-Terrestrial Relations Observatory (STEREO) and the Solar and Heliospheric Observatory to investigate the hour-long eruption of a fast and wide coronal mass ejection (CME) on 2011 March 21 when the twin STEREO spacecraft were located beyond the solar limbs. We analyze the(More)
Using high-sensitivity instruments on the ACE spacecraft, we have examined the intensities of O and Fe in 14 large solar energetic particle events whose parent activity was in the solar western hemisphere. Sampling the intensities at low (∼273 keV nucleon ) and high (∼12 MeV nucleon ) energies, we find that at the same kinetic energy per nucleon, the Fe/O(More)
We present ACE observations for the six-day period encompassing the Bastille Day 2000 solar activity. A high level of transient activity at 1 AU, including ICME-driven shocks, magnetic clouds, shock-accelerated energetic particle populations, and solar energetic ions and electrons, are described. We present thermal ion composition signatures for ICMEs and(More)
We have surveyed the 0.1–10 MeV nucleon 1 abundances of heavy ions from He through Fe in 64 large solar energetic particle (LSEP) events observed on board theAdvancedComposition Explorer from1997November through 2005 January. Our main results are (1) the 0.5–2.0MeV nucleon 1 He/He ratio is enhanced between factors of 2– 150 over the solar wind value in 29 ((More)