173 citations · 479 across the 13 of their papers we have counts for
13 papers
Spatial Variation in the Responses of the Surface External and Induced Magnetic Field to the Solar Wind
R. M. Shore, M. P. Freeman, J. C. Coxon +3
We analyze the spatial variation in the response of the surface geomagnetic field (or the equivalent ionospheric current) to variations in the solar wind. Specifically, we regress…
Interplanetary Magnetic Field Control of PolarIonospheric Equivalent Current System Modes
R. M. Shore, M. P. Freeman, J. W. Gjerloev
We analyze the response of different ionospheric equivalent current modes to variations in the interplanetary magnetic field (IMF) components By and Bz. Each mode comprises a fixed…
Interplanetary Shock-induced Magnetopause Motion: Comparison between Theory and Global Magnetohydrodynamic Simulations
Ravindra T. Desai, Mervyn P. Freeman, Jonathan P. Eastwood +10
The magnetopause marks the outer edge of the Earth's magnetosphere and a distinct boundary between solar wind and magnetospheric plasma populations. In this letter, we use global m…
A new technique for determining Substorm Onsets and Phases from Indices of the Electrojet (SOPHIE)
C. Forsyth, I. J. Rae, J. C. Coxon +4
We present a new quantitative technique that determines the times and durations of substorm expansion and recovery phases and possible growth phases based on percentiles of the rat…
Rhythm and Randomness in Human Contact
Mervyn P. Freeman, Nicholas W. Watkins, Eiko Yoneki +1
There is substantial interest in the effect of human mobility patterns on opportunistic communications. Inspired by recent work revisiting some of the early evidence for a Lévy fli…
Synthesis of scaling exponents: a fractional Levy model
N. W. Watkins, D. Credgington, B. Hnat +3
Mandelbrot introduced the concept of fractals to describe the non-Euclidean shape of many aspects of the natural world. In the time series context he proposed the use of fractional…