Browsing Centre for Science by Author "McPherron, Robert L."
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Automated Forward Modelling and its Results for Substorms and Sawtooth Events
Connors, Martin; Rostoker, Gordon; McPherron, Robert L.; Hsu, Tung-Shin; Ponto, Jason (2008-06-18)Automated Forward Modelling is used to contrast quantitative aspects of substorms and sawtooth events. -
Automated Regional Modelling (ARM) for characterization of the substorm current wedge
Connors, Martin; McPherron, Robert L.; Ponto, Jason; Stacey, R. Greg; Russell, Christopher T.; Angelopoulos, Vassilis; Rostoker, Gordon; Boteler, D.; Danskin, D. (2008-04-30)Some characteristics of substorms may be determined through use of an electrojet forward modelling approach. These include the amplitude of cross-meridian electric current (0.2 to 1 MA typically), timescales (about 20 ... -
An Evening Sector Ps 6 - Omega Band Event
Connors, Martin; Syrjasuo, Mikko; Donovan, Eric F.; Greffen, Mike; Jackel, Brian; Trondsen, Trond; Voronkov, Igor; McPherron, Robert L.; Russell, Christopher T.; Sigwarth, John; Mende, Stephen B. (2008-01-29)Abstract. Ps 6 magnetic disturbances and associated optical forms known as omega bands are usually associated with the morning sector. Some evidence for similar phenomenology in the evening sector has been presented ... -
Interpretation of Automated Forward Modeling Parameters for Sawtooth Events and Substorms
Connors, Martin; McPherron, Robert L.; Clauer, C. Robert (International Conference on Substorms 8, 2006)Automated Forward Modeling (AFM) is an inversion technique based on magnetic data alone, which can indicate physical parameters associated with electrojets. From perturbations along a meridian, the total electric current ... -
Onsets and Flapping Studied Using a Dynamic Harris Sheet Model
Connors, Martin; Lerner, Rob; Gaugey, Geraldine; Lavraud, Benoit; Volwerk, Martin; McPherron, Robert L. (2007-10-31)We have developed a nonlinear fitting routine for the Harris current sheet based on magnetic data, and applied it to 71 plasma sheet crossings by Cluster. In most cases this simple fit appeared to represent the magnetic ... -
Physical Parameters of Substorms from Automated Forward Modeling
Connors, Martin; Ponto, Jason; McPherron, Robert L. (2006-07-08)AFM technique applied to give average parameters of substorms and relation to AL index, Weimer parametrization, optical data