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A Revised Forest Fire Model Non-Quasistatically Driven for the Sporadic Activity of the Earth’s Magnetotail
Type
Conference paper
Language
English
Obiettivo Specifico
3.9. Fisica della magnetosfera, ionosfera e meteorologia spaziale
Status
Published
Issued date
February 2002
Conference Location
Vico Equense, Italy / 24-29 September 2001
Abstract
The energy release during magnetospheric substorms in response to solar wind changes consists of two main physical processes: the directly-driven and the unloading processes. Recent analysis on the sporadic activity
related to the unloading process seems to indicate that the magnetospheric response to solar wind changes might resemble the behaviour of an out-of-equilibrium system near a marginally stable point (critical point). Here, we present a modified version of the well-known forest-fire cellular automaton (FFM) not quasistatically driven for the sporadic activity of the energy release in the geotail regions as revealed by the auroral electrojet index.
related to the unloading process seems to indicate that the magnetospheric response to solar wind changes might resemble the behaviour of an out-of-equilibrium system near a marginally stable point (critical point). Here, we present a modified version of the well-known forest-fire cellular automaton (FFM) not quasistatically driven for the sporadic activity of the energy release in the geotail regions as revealed by the auroral electrojet index.
References
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of the magnetosphere, J. Geophys. Res., Vol. 10 1,
13089-13113, 1996.
2. Consolini G., Sandpile cellular automata and magnetospheric
dynamics, in Aiello S. et al. eds. Proc. of
the Cosmic Physics in the Year 2000, SIF, Bologna,
Vol. 58, 123-127, 1997.
3. Chang T.S., Self-organized criticality, multifiactal
spectra, sporadic localized reconnections and intermittent
turbulence in the magnetotail, Phys. Plasmas,
Vol. 6, 4137-4145, 1999.
5. Lui A.T.Y., et al. Is the dynamic magnetosphere
and avalanching system ?, Geophys. Res. Lett., Vol.
27, 91 1-914, 2000.
6. Consolini G., and Chang T.S. Magnetic field topology
and criticality in geotail dynamics: relevance to
substorm phenomena, Space Sci. Rev., Vol. 95, 309-
321, 2001.
7. Consolini G., and Chang T.S. Complexity, magnetic
field topology, criticality, and metastability in
magnetotail dynamics, J. Atmos. Sol. Terr. Phys., in
press 200 1.
8. Chang T.S. Colloid-like behavior and topological
phase transitions in space plasmas: intermittent low
frequency turbulence in the auroral zone, Phys. Scripta,
Vol. T89, 80-83, 2001.
9. Consolini G., and De Michelis P. A revised forestfire
cellular automaton for the nonlinear dynamics of
the Earth's magnetotail, J. Atmos. Sol. Terr. Phys.,
Vol. 63, 1371-1377, 2001.
10. Tsurutani B., et al. Nonlinear response of AE to
the IMF Bs, Geophys. Res. Lett., Vol. 17, 279-282,
1990.
11. Bak P., et al. A forest-fire model and some
thoughts on turbulence, Phys. Lett. A, Vol. 147, 297-
300, 1990.
12. Drossel B., and Schwabl F., Self-organized criticality
in a forest fire model, Physica A, Vol. 191, 47-
50, 1992.
13. Loreto V., et al., Renormalization group approach
to the critical behaviour of the forest-fire model, Phys.
Rev. Lett., Vol. 75, 465-468, 1995.
14. Lay Y. C., Symmetry-breaking bifurcation with
on-off intermittency in chaotic dynamical systems,
Phys. Rev. E, Vol. 53, R4267-R4270, 1996.
15. Lay Y. C., Distinct small-distance scaling behaviour
of on-off intermittency in chaotic dynamical systems,
Phys. Rev. E, Vol. 54, 321-327, 1996.
16. Hwa T., and Kardar M., Avalanche, hydrodynamics,
and discharge events in models of sandpiles, Phys.
Rev. A, Vol. 45, 7002-7023, 1992.
4. Angelopoulos V., et al. Evidence for intermittency
in Earth's plasma sheet and implications for selforganized
criticality, Phys. Plasmas, Vol. 6, 4161-
4168, 1999.
of the magnetosphere, J. Geophys. Res., Vol. 10 1,
13089-13113, 1996.
2. Consolini G., Sandpile cellular automata and magnetospheric
dynamics, in Aiello S. et al. eds. Proc. of
the Cosmic Physics in the Year 2000, SIF, Bologna,
Vol. 58, 123-127, 1997.
3. Chang T.S., Self-organized criticality, multifiactal
spectra, sporadic localized reconnections and intermittent
turbulence in the magnetotail, Phys. Plasmas,
Vol. 6, 4137-4145, 1999.
5. Lui A.T.Y., et al. Is the dynamic magnetosphere
and avalanching system ?, Geophys. Res. Lett., Vol.
27, 91 1-914, 2000.
6. Consolini G., and Chang T.S. Magnetic field topology
and criticality in geotail dynamics: relevance to
substorm phenomena, Space Sci. Rev., Vol. 95, 309-
321, 2001.
7. Consolini G., and Chang T.S. Complexity, magnetic
field topology, criticality, and metastability in
magnetotail dynamics, J. Atmos. Sol. Terr. Phys., in
press 200 1.
8. Chang T.S. Colloid-like behavior and topological
phase transitions in space plasmas: intermittent low
frequency turbulence in the auroral zone, Phys. Scripta,
Vol. T89, 80-83, 2001.
9. Consolini G., and De Michelis P. A revised forestfire
cellular automaton for the nonlinear dynamics of
the Earth's magnetotail, J. Atmos. Sol. Terr. Phys.,
Vol. 63, 1371-1377, 2001.
10. Tsurutani B., et al. Nonlinear response of AE to
the IMF Bs, Geophys. Res. Lett., Vol. 17, 279-282,
1990.
11. Bak P., et al. A forest-fire model and some
thoughts on turbulence, Phys. Lett. A, Vol. 147, 297-
300, 1990.
12. Drossel B., and Schwabl F., Self-organized criticality
in a forest fire model, Physica A, Vol. 191, 47-
50, 1992.
13. Loreto V., et al., Renormalization group approach
to the critical behaviour of the forest-fire model, Phys.
Rev. Lett., Vol. 75, 465-468, 1995.
14. Lay Y. C., Symmetry-breaking bifurcation with
on-off intermittency in chaotic dynamical systems,
Phys. Rev. E, Vol. 53, R4267-R4270, 1996.
15. Lay Y. C., Distinct small-distance scaling behaviour
of on-off intermittency in chaotic dynamical systems,
Phys. Rev. E, Vol. 54, 321-327, 1996.
16. Hwa T., and Kardar M., Avalanche, hydrodynamics,
and discharge events in models of sandpiles, Phys.
Rev. A, Vol. 45, 7002-7023, 1992.
4. Angelopoulos V., et al. Evidence for intermittency
in Earth's plasma sheet and implications for selforganized
criticality, Phys. Plasmas, Vol. 6, 4161-
4168, 1999.
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