Observational evidence for an inside-out substorm onset scenario
Citations
7 citations
Cites background from "Observational evidence for an insid..."
...…past 50 years since Akasofu (1964), and the current understanding, as established by high-resolution ground and satellite optical observations (Donovan et al., 2006; Sakaguchi et al., 2009; Henderson, 2009), is that the auroral arc initially deforms into a vortex street on the scale of 30–70 km....
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...The second question is closely related to coupling with magnetotail high-β plasma dynamics (e.g., Henderson, 2009)....
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...A simple scenario seems to be that an arc lying on a local field line becomes destabilized through changes in the global conditions, leading to connection to magnetotail plasma instabilities (cf. Haerendel, 2010; Henderson, 2009)....
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7 citations
Additional excerpts
...Numerous other additions have been made over the years including: the evolution of the bulge toward a “double oval” configuration (Elphinstone et al., 1993; Elphinstone et al., 1995; Henderson, 1994; Kornilov et al., 2016); the occurrence of large-scale coherent spirals or hot-spots along the poleward boundary (Murphree & Johnson, 1996); the occurrence of so-called “contact breakups” at the equatorward region of the bulge as a result of prior streamer activity (Henderson et al., 2002; Nishimura et al., 2010; Oguti, 1973); the occurrence of auroral beading at substorm onset (Donovan et al., 2006; Elphinstone et al., 1995; Henderson, 1994, 2009; Kalmoni et al., 2015; Motoba et al., 2012); the development of periodic substorms and sawtooth events (Belian et al., 1995; Cai et al., 2006; Henderson, 2004; Henderson et al., 2006; Huang et al., 2004; Reeves et al., 2013); the detachment of non-stormtime “SAR arcs” from the main oval during substorm recovery phase (Shiokawa et al., 2009, 2017; Takagi et al., 2018); and the recognition that SMCs/ Convection bays can be viewed as substorms that continue to be driven (by reconnection) in a prolonged sense after the bulge has evolved into a double-oval configuration (e.g., Walach & Milan, 2015)....
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...…(Henderson et al., 2002; Nishimura et al., 2010; Oguti, 1973); the occurrence of auroral beading at substorm onset (Donovan et al., 2006; Elphinstone et al., 1995; Henderson, 1994, 2009; Kalmoni et al., 2015; Motoba et al., 2012); the development of periodic substorms and sawtooth…...
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7 citations
Cites background from "Observational evidence for an insid..."
...…regions of the tail (Rostoker and Samson 1984) or the hybrid Kelvin–Helmholtz/Rayleigh–Taylor instability in the plasma sheet (Yamamoto 2011) and, alternatively, that omega bands form as a direct consequence of auroral streamer activity (high-speed flows) in the magnetotail (Henderson 2009, 2012)....
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6 citations
References
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"Observational evidence for an insid..." refers background in this paper
...…or mechanisms have been introduced over the past 40 years in attempts to explain the observed phenomenology (e.g.Swift, 1967; Hones et al., 1973; Russell and McPherron, 1973; McPherron et al., 1973; Hones, 1977; Lui, 1978; Lui et al., 1988; Roux, 1985; Smith et al., 1986; Rostoker and Eastman,…...
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480 citations
"Observational evidence for an insid..." refers background in this paper
...The deceleration or “braking” of these flow bursts in the near-Earth region produces the familiar current wedge, Pi2 pulsations and breakup activity on or near the most equatorward arc (Haerendel, 1992; Shiokawa et al., 1997, 1998)....
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