Tiempo del espacio
¿Cuál es tiempo del espacio?
Valor de radiación para las siguentes 24
horas. |
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Información sobre tormenta solar - monitorEl monitor de tormenta solar carga periodicamente los datos de NOAA Space Environment Center FTP Server. Los últimos 24 horas de la onda larga de 5 minutos X-ray datos recibido por los satelites: GOES 8 y GOES 10 están précalculado para las 24 horas siguentes. Leyenda:
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Flujo de la radiografía que
este diagrama demuestra que GOES 3 días de 5 valores solares minuciosos del
flujo de la radiografía medidos en el SEC primario y secundario los
satélites. Un valor bajo puede aparecer antes de períodos del eclipse.
The Earth has a magnetic field
that resembles the field of a bar magnet located at centre of the Earth. In
Finland the strength of the field is about 51000 nT (nanotesla). Magnetic
field is a vector quantity which means that in addition to its strength it
is important to know also its direction. The standard measurements of the
geomagnetic field determine its geographic north (X), east (Y), and downward
(Z) components. In Finland the field is directed almost perpendicularly
downwards and thus the Z-component is much larger than the X- and
Y-components.
The accompanying magnetogram show the X-, Y-, and Z-components of the
magnetic field recorded today at the Nurmij&aulm;rvi geophysical
observatory. At the left side of the magnetograms you can see the nanotesla
scale that can be used to esimate the amplitudes of the varions in the field
components.
Electric currents flowing in the upper atmosphere (in the ionosphere at 100
km altitude)cause continuous variability in the geomagnetic field. During
auroral periods the strongest currents flow in the east-west direction
causing variation especially in the X-component which typically decreases
(i.e. the curve deviates downward).
The strength of the ionospheric currents can be easily estimated if the
amplitude of the magnetic field variation is known. According to a rough
thumb rule one nanotesla deviation corresponds to a current enhancement of
1000 amperes. Such currents are large when compared e.g. to the few ampere
currents of domestic appliances. In Lapland during auroral periods typical
measured magnetic deviations are of the order of a few hundreds of nanotesla
corresponding to ionospheric currents of a few hundreds of amperes. During
the strongest geomagnetic storms, like at the end of October 2003, the
ionospheric currents can easily exceed million amperes.
This is a summary of latest plots of spaceweather data as provided by NOAA/SEC.
Estimated
Planetary K index (3 hour data)
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GOES Electron Flux (5 minute data)
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GOES Magnetometer (1 minute data)
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GOES 11
Proton Flux (5 minute data)
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GOES Satellite
Environment
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GOES Xray Flux (5 minute data)
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