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Updated: May 1, 2026

Surface Renewal: An Advanced Micrometeorological Method for Measuring and Processing Field-Scale Energy Flux Density Data
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Comment on "Tail reconnection triggering substorm onset".

A T Y Lui1

  • 1Johns Hopkins University Applied Physics Laboratory, 11100 Johns Hopkins Road, Laurel, MD 20723-6099, USA. Tony.Lui@jhuapl.edu

Science (New York, N.Y.)
|June 13, 2009
PubMed
Summary
This summary is machine-generated.

Near-Earth current disruption, not magnetic reconnection, triggers magnetospheric substorms. Auroral intensification and tail reconnection are not causally linked to substorm onset, suggesting a continuation of earlier events.

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Area of Science:

  • Space Physics
  • Earth's Magnetosphere
  • Plasma Physics

Background:

  • Investigating the trigger mechanisms for magnetospheric substorms.
  • Analyzing the causal relationship between magnetic reconnection and substorm onset.
  • Examining the role of near-Earth current disruption in geomagnetic phenomena.

Discussion:

  • Challenging the established model of magnetic reconnection as the sole trigger for magnetospheric substorms.
  • Presenting evidence for near-Earth current disruption preceding conventional tail reconnection signatures.
  • Discussing the decoupling of auroral intensification and tail reconnection from substorm onset.

Key Insights:

  • Near-Earth current disruption is identified as the primary trigger for magnetospheric substorm onset.
  • The study refutes a direct causal link between auroral intensification and tail reconnection during substorm events.
  • Substorm onsets previously attributed to tail reconnection may represent a continuation of ongoing substorm activity.

Outlook:

  • Revising current models of magnetospheric substorm dynamics.
  • Guiding future research on energy transfer and particle acceleration in Earth's magnetotail.
  • Improving predictions of space weather events and their impact on technological systems.