Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Influence of the interplanetary driver type on the durations of main and
  recovery phases of magnetic storms   We study durations of main and recovery phases of magnetic storms induced by
different types of large-scale solar-wind streams (Sheath, magnetic cloud (MC),
Ejecta and CIR) on the basis of OMNI data base during 1976-2000. Durations of
both main and recovery phases depend on types of interplanetary drivers. On the
average, duration of main phase of storms induced by compressed regions (CIR
and Sheath) is shorter than by MC and Ejecta while duration of recovery phase
of CIR- and Sheath-induced storms is longer. Analysis of durations of
individual storms shows that durations of main and recovery phases
anti-correlate for CIR- and Sheath-induced storms and there is not dependence
between them for (MC+Ejecta)-induced storms.

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The categories of this paper are: cs
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The categories of this paper are: hep-lat
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The categories of this paper are: hep-ph
31
The categories of this paper are: ao-sci
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The categories of this paper are: eess
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The categories of this paper are: q-bio
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The categories of this paper are: econ
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The categories of this paper are: q-alg
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The categories of this paper are: dg-ga
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The categories of this paper are: nucl-th
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The categories of this paper are: math
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The categories of this paper are: alg-geom
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The categories of this paper are: adap-org
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The categories of this paper are: comp-gas
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The categories of this paper are: patt-sol
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The categories of this paper are: solv-int