Zobrazeno 1 - 10
of 1 144
pro vyhledávání: '"D. Orr"'
Autor:
J. R. Taylor, M. Lester, T. K. Yeoman, B. A. Emery, D. J. Knipp, D. Orr, S. I. Solovyev, T. J. Hughes, H. Lühr
Publikováno v:
Annales Geophysicae, Vol 15, Pp 671-684 (1997)
The geomagnetic response to the passage of a coronal mass ejection (CME) is studied. The passage of the CME resulted in a storm sudden commencement (SSC) at 2243 UT on March 20 1990 with disturbed magnetic activity during the following 24 h. The a
Externí odkaz:
https://doaj.org/article/edbf8a20d2db4a66969d79742cf26057
Publikováno v:
Annales Geophysicae, Vol 15, Pp 424-429 (1997)
A new approach to the problem of direction and distance finding of magnetospheric ULF oscillations is described. It is based on additional information about the structure of geoelectromagnetic field at the Earth's surface which is contained in the
Externí odkaz:
https://doaj.org/article/bfbc1b9fe259462294c6e1ab7de8f3bb
Autor:
J. P. Morelli, R. J. Bunting, S. W. H. Cowley, C. J. Farrugia, M. P. Freeman, E. Friis-Christensen, G. O. L. Jones, M. Lester, R. V. Lewis, H. Lühr, D. Orr, M. Pinnock, G. D. Reeves, P. J. S. Williams, T. K. Yeoman
Publikováno v:
Annales Geophysicae, Vol 13, Pp 1144-1163 (1995)
We present an analysis of ground magnetic field, ionospheric flow, geosynchronous particle, and interplanetary data during a multiple-onset substorm on 12 April 1988. Our principal results concern the modulations of the ionospheric flow which occu
Externí odkaz:
https://doaj.org/article/0b1246ce4e84414cb57a5728242ae23b
Publikováno v:
Annales Geophysicae, Vol 13, Pp 583-594 (1995)
We present a technique for determination of the position and extent of the current systems present during substorm breakup. The parameters of a three-dimensional model of the currents are determined by fitting the model to data from the SAMNET mag
Externí odkaz:
https://doaj.org/article/6a8aba268b154766bfbad27f67c3f04c
Publikováno v:
Annales Geophysicae, Vol 13, Pp 159-167 (1995)
In this study over 100 Pc5 events observed on the SAMNET magnetometer array have been catalogued. The ground horizontal polarization of these waves has been investigated and it has been shown that there are large differences between the polarization
Externí odkaz:
https://doaj.org/article/a644ec91ba9948b8a0e71d37654d58fc
Autor:
T. K. Yeoman, H. Lühr, R. W. H. Friedel, S. Coles, M. Grandé, C. H. Perry, M. Lester, P. N. Smith, H. J. Singer, D. Orr
Publikováno v:
Annales Geophysicae, Vol 12, Pp 1158-1173 (1994)
Observations are presented of data taken during a 3-h interval in which five clear substorm onsets/intensifications took place. During this interval ground-based data from the EISCAT incoherent scatter radar, a digital CCD all sky camera, and an e
Externí odkaz:
https://doaj.org/article/21df1696564746958ad84b8f14f1916e
Autor:
G. Chisham, D. Orr
Publikováno v:
Annales Geophysicae, Vol 12, Pp 649-654 (1994)
Two features of giant pulsations (Pgs) which still require an explanation are firstly, why Pgs occur mainly in the early morning sector (i.e. 03:00-07:00 MLT) and not at other times of day, and secondly, why Pgs occur preferentially in a narrow la
Externí odkaz:
https://doaj.org/article/1a35a3b142b54e78ae07e0caaea6d0ad
Autor:
I. Krauklis, D. Orr
Publikováno v:
Annales Geophysicae, Vol 12, Pp 188-194 (1994)
A numerical simulation study of the ultra-low frequency (ULF) H-component magnetic field at the Earth's surface arising from a perturbation ionospheric Hall current has been developed. The Hall current system is driven by field-aligned currents (F
Externí odkaz:
https://doaj.org/article/2f544fbfae81424fbfa8b95951f9238b
The Italian economy has been struggling with low productivity growth and bank balance sheet strains. This paper examines the implications for firm productivity of adverse shocks to bank lending in Italy, using a novel identification scheme and loan-l
Publikováno v:
Annales Geophysicae, Vol 13, Iss 2, Pp 159-167 (0000)
In this study over 100 Pc5 events observed on the SAMNET magnetometer array have been catalogued. The ground horizontal polarization of these waves has been investigated and it has been shown that there are large differences between the polarization
Externí odkaz:
https://doaj.org/article/ecbaeb4c659948dab66d8200233bc1bb