Dynamical Complexity in Current Disruption within the Earth’s Magnetotail during Substorm

Abstract:

Current disruption in the Earth’s magnetotail is a key phenomenon for onset of magnetospheric substorms. During current disruptions, large-amplitude high-frequency magnetic fluctuations occur. Several studies show that these fluctuations are indicative of intermittent turbulence. We review some of these studies that use analysis tools in dynamic complexity and other studies that adopt the traditional techniques. Combining these two different but complementary approaches to the subject, we can identify quantitatively the characteristics of intermittent turbulence as well as gain insights into the underlying physical process for current disruption.