Zobrazeno 1 - 10
of 79
pro vyhledávání: '"M. J. Owens"'
Publikováno v:
Earth and Space Science, Vol 8, Iss 6, Pp n/a-n/a (2021)
Abstract Characterizing the location of the outer boundary of the outer radiation belt is a key aspect of improving radiation belt models and helps to constrain our understanding of the mechanisms by which the source and seed electron populations are
Externí odkaz:
https://doaj.org/article/f3c1d93f018f48e1b1d3a0f4517572b6
Publikováno v:
AGU Advances, Vol 1, Iss 3, Pp n/a-n/a (2020)
Predicting the arrival of coronal mass ejections (CMEs) is one key objective of space weather forecasting. In operational space weather forecasting, solar wind numerical models are used for this task and ensemble techniques are being increasingly exp
Externí odkaz:
https://doaj.org/article/ec900a16fe874d6da0730f0a5f1087c5
Publikováno v:
Scientific Reports, Vol 7, Iss 1, Pp 1-6 (2017)
Abstract Coronal mass ejections (CMEs) are episodic eruptions of solar plasma and magnetic flux that travel out through the solar system, driving extreme space weather. Interpretation of CME observations and their interaction with the solar wind typi
Externí odkaz:
https://doaj.org/article/8144735b567844589c78e0b82a65e3ff
Autor:
M. Lockwood, H. Nevanlinna, L. Barnard, M. J. Owens, R. G. Harrison, A. P. Rouillard, C. J. Scott
Publikováno v:
Annales Geophysicae, Vol 32, Pp 383-399 (2014)
In the concluding paper of this tetralogy, we here use the different geomagnetic activity indices to reconstruct the near-Earth interplanetary magnetic field (IMF) and solar wind flow speed, as well as the open solar flux (OSF) from 1845 to the pr
Externí odkaz:
https://doaj.org/article/269186d06c9e448298aa2fbbc763cdab
Autor:
M. Lockwood, H. Nevanlinna, M. Vokhmyanin, D. Ponyavin, S. Sokolov, L. Barnard, M. J. Owens, R. G. Harrison, A. P. Rouillard, C. J. Scott
Publikováno v:
Annales Geophysicae, Vol 32, Pp 367-381 (2014)
Svalgaard (2014) has recently pointed out that the calibration of the Helsinki magnetic observatory's H component variometer was probably in error in published data for the years 1866–1874.5 and that this makes the interdiurnal variation index b
Externí odkaz:
https://doaj.org/article/b0b28d15754146c0b9e1c9140762c179
Autor:
M. Lockwood, L. Barnard, H. Nevanlinna, M. J. Owens, R. G. Harrison, A. P. Rouillard, C. J. Davis
Publikováno v:
Annales Geophysicae, Vol 31, Pp 1957-1977 (2013)
We present a new composite of geomagnetic activity which is designed to be as homogeneous in its construction as possible. This is done by only combining data that, by virtue of the locations of the source observatories used, have similar response
Externí odkaz:
https://doaj.org/article/e5b249f8458d43d08aa2dede52de9d18
Autor:
M. Lockwood, L. Barnard, H. Nevanlinna, M. J. Owens, R. G. Harrison, A. P. Rouillard, C. J. Davis
Publikováno v:
Annales Geophysicae, Vol 31, Pp 1979-1992 (2013)
We present a new reconstruction of the interplanetary magnetic field (IMF, B) for 1846–2012 with a full analysis of errors, based on the homogeneously constructed IDV(1d) composite of geomagnetic activity presented in Part 1 (Lockwood et al., 20
Externí odkaz:
https://doaj.org/article/01e9f13e5585471496593c369792a65f
Autor:
N. P. Savani, A. P. Rouillard, J. A. Davies, M. J. Owens, R. J. Forsyth, C. J. Davis, R. A. Harrison
Publikováno v:
Annales Geophysicae, Vol 27, Pp 4349-4358 (2009)
On 15–17 February 2008, a CME with an approximately circular cross section was tracked through successive images obtained by the Heliospheric Imager (HI) instrument onboard the STEREO-A spacecraft. Reasoning that an idealised flux rope is cylind
Externí odkaz:
https://doaj.org/article/211125b823a34c838bc130e2c60625b4
Publikováno v:
Annales Geophysicae, Vol 27, Pp 4057-4067 (2009)
Magnetic clouds are a subset of interplanetary coronal mass ejections characterized by a smooth rotation in the magnetic field direction, which is interpreted as a signature of a magnetic flux rope. Suprathermal electron observations indicate that
Externí odkaz:
https://doaj.org/article/4e3c94037adf4d54a4d91bcff00a90ee
Publikováno v:
Journal of Geophysical Research: Space Physics. 128