Zobrazeno 1 - 10
of 728
pro vyhledávání: '"P. De Michelis"'
Autor:
M. Piersanti, P. De Michelis, D. Del Moro, R. Tozzi, M. Pezzopane, G. Consolini, M. F. Marcucci, M. Laurenza, S. Di Matteo, A. Pignalberi, V. Quattrociocchi, P. Diego
Publikováno v:
Annales Geophysicae, Vol 38, Pp 703-724 (2020)
On 25 August 2018 the interplanetary counterpart of the 20 August 2018 coronal mass ejection (CME) hit Earth, giving rise to a strong G3 geomagnetic storm. We present a description of the whole sequence of events from the Sun to the ground as well as
Externí odkaz:
https://doaj.org/article/17ece68833f0493ab7e5d127b9950e59
Publikováno v:
Earth and Space Science, Vol 7, Iss 7, Pp n/a-n/a (2020)
Abstract There is a growing interest in the development of models and methods of analysis aimed to recognize in the geomagnetic field signals the different contributions coming from the various sources both internal and external to the Earth. Many mo
Externí odkaz:
https://doaj.org/article/5a586a2e422b4899876795c86bf4cf22
Publikováno v:
Annales Geophysicae, Vol 34, Pp 1069-1084 (2016)
We used the empirical mode decomposition (EMD) to investigate the time variation of the magnetospheric and ground-based observations of the Earth's magnetic field during both quiet and disturbed periods. We found two timescale variations in magnet
Externí odkaz:
https://doaj.org/article/331bb93c4001417a8f6d6213be2e9c5a
Publikováno v:
Nonlinear Processes in Geophysics, Vol 20, Iss 6, Pp 1127-1135 (2013)
The Earth's rotation rate is not constant, but changes on all observable timescales, from subdaily to decadal and longer. These variations are usually discussed in terms of variations in the length of the day (LoD) and are caused by processes acting
Externí odkaz:
https://doaj.org/article/48d146f21e6d427780918a5e1a59bc0b
Publikováno v:
Nonlinear Processes in Geophysics, Vol 20, Iss 4, Pp 455-466 (2013)
The Earth's magnetosphere exhibits a complex behavior in response to the solar wind conditions. This behavior, which is described in terms of mutifractional Brownian motions, could be the consequence of the occurrence of dynamical phase transitions.
Externí odkaz:
https://doaj.org/article/05f587cf630f48738895fe0a2d5f56b5
Publikováno v:
Nonlinear Processes in Geophysics, Vol 19, Iss 6, Pp 667-673 (2012)
Complexity and multi-scale are very common properties of several geomagnetic time series. On the other hand, it is amply demonstrated that scaling properties of geomagnetic time series show significant changes depending on the geomagnetic activity le
Externí odkaz:
https://doaj.org/article/8ffdd0d72fb84ab9a06e541d00b349a0
Autor:
G. Consolini, P. De Michelis
Publikováno v:
Annales Geophysicae, Vol 29, Pp 2317-2326 (2011)
Over the past few decades scientists have shown growing interest in space plasma complexity and in understanding the turbulence in magnetospheric and interplanetary media. At the beginning of the 1980s, Yu. L. Klimontovich introduced a criterion,
Externí odkaz:
https://doaj.org/article/e209f51f3d8849beb36256fb9d18389f
Autor:
G. Consolini, P. De Michelis
Publikováno v:
Nonlinear Processes in Geophysics, Vol 18, Iss 3, Pp 277-285 (2011)
In the second half of the 90s interest grew on the complex features of the magnetospheric dynamics in response to solar wind changes. An important series of papers were published on the occurrence of chaos, turbulence and complexity. Among them, part
Externí odkaz:
https://doaj.org/article/fc52ff97f4db44409da0b718f8944308
Publikováno v:
Annales Geophysicae, Vol 28, Pp 2213-2226 (2010)
The ionospheric and magnetospheric current systems are responsible of the daily magnetic field changes. Recently, the Natural Orthogonal Components (NOC) technique has been applied to model the physical system responsible of the daily variation of
Externí odkaz:
https://doaj.org/article/88b2fecaed9e44a58253169c20225844
Publikováno v:
Annales Geophysicae, Vol 27, Pp 2483-2490 (2009)
The target of this work is to investigate the nature of magnetic perturbations produced by ionospheric and magnetospheric currents as recorded at high-latitude geomagnetic stations. In particular, we investigate the effects of these currents on ge
Externí odkaz:
https://doaj.org/article/680d174ecc904c9ebd8aaab9f32d1fcb