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: http://dbserv.sinp.msu.ru/apev/tpdescr.htm
Дата изменения: Thu Mar 13 10:14:59 2008
Дата индексирования: Mon Oct 1 19:33:28 2012
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Поисковые слова: wind
DESCRIPTION OF THE TIME PROFILES OF KEY GEOMAGNETIC AND SOLAR WIND PARAMETERS
Time profiles of key geomagnetic parameters (Ap and Dst
indices)
are shown together with key parameters of the solar wind (velocity
V, density n
and temperature T) and IMF (B, Bx, By,
Bz in GSM coordinate system). This data
representation permits to identify the interplanetary agent
(CME, CIR, Erupted Filament etc.) triggering the magnetospheric disturbance.
There are two kinds of plots: 3 day duration (for searching fast
processes) and 7 day duration for analysis of global (previous and following)
heliospheric and geomagnetic situation (especially in the case of complicated
events). The middle day of the pictures is a day from the
List of selected geomagnetic disturbed days
.
Geomagnetic activity dynamics is presented on two upper panels as time
profiles of Ap and Dst indices. Geomagnetic data is obtained
from WDC-C2 KYOTO
Geomagnetic Data Service. Vertical dashed line corresponds to the time
of maximal Ap-index observed during geomagnetic disturbed day.
The parameters of solar wind plasma (velocity V, density n
and
temperature T) are presented on the next three panels. Hourly
averaged
data from OMNIWeb are
indicated by symbols: circles (V) and triangles (n and
T).
High time resolution data on the solar wind plasma is obtained from
Wind experiment in 1997 and
ACE experiment in 1998-2002
using ISTP data base.
On the bottom two panels IMF B, Bz (dotted and solid lines respectively)
and Bx, By (solid and dotted lines respectively) are presented in GSM coordinate system.
The IMF data is obtained also from
ISTP data base using
Wind experiment in 1997 and
ACE experiment in 1998-2002.
Using the
maximal velocity measured within 12 hours before the maximal
Ap-index detection, the possible time of the solar wind start
from the Sun was calculated. This starting moment is used for selection of most probable solar events presented on 1d Map of Solar Events
