Transcript ЭКСПЕРИМЕНТАЛЬНЫЕ ИССЛЕДОВАНИЯ ЭФФЕКТО

RESEARCH RESULTS ON
ATMOSPHERIC ELECTRIC FIELD
AT OBSERVATORY PARATUNKA IN
KAMCHATKA.
V.V. Kuznetsov, N.V. Cherneva, G.I. Druzhin, I.Y. Babahanov.
Institute of Space Physical Research and Radio Wave Propagation,
Kamchatka, Russia
INSTRUMENT SYSTEM AT PARATUNKA OBSERVATORY:
IONOSPHERE VERTICAL SOUNDING,
MEASURING INSTRUMENT OF ATMOSPHERIC ELECTRIC FIELD INTENSITY
(in summer and in winter),
RIOMETER,
MEASURING INSTRUMENT OF AIR CONDUCTIVITY,
MICROBAROGFAPH.
• Motivation:
• To provide answer to if there is a correlation between AEF
and GCR during Forbush decreases?
• To reveal the phenomena of the Sun terminator and UT
variation (Carnegie curve ) of AEF in Kamchatka.
• To investigate if there is a correlation between AEF and
cyclones dynamics?
• To assess a contribution of fine aerosols to AEF formation?
• To run experiments on AEF forcing by the artificial cloud.
• To ascertain if there is a secular decreasing of the AEF
magnitude in Kamchatka and if it correlates with the Earth
surface temperature increasing.
Variation of the atmospheric electric
field E (blue) during Forbush decrease
of GCR (red) and the days later.
E is recovering faster than GCR is.
Right: left curves compared to variation
of the electro-conductivity of light ions.
E diurnal variation and the
Sun terminator effect.
Dark belt – night hours.
• The sunrise impression
(t in hours) on the AEF at
Paratunka observatory
(vertical zero line
corresponds to the time
of the sunrise).
Influence of Cyclones on the Atmospheric Electric Field of
Kamchatka
(a) Annual mean number of deep cyclones in January;
(b) trajectories of cyclones influencing the weather in Kamchatka;
(c) displacement of epicenters of two cyclones during the observation
period from January 8 to January 16, 2002.
Top –
azimutal
distribution of
thunderstorm
discharges and
distribution of
cyclones
epicenters.
Bottom –
distance from the
cyclones
epicenters
to the Paratunka
observatory.
(a) Distance from the epicenters
of the cyclones, closest to the
Paratunka observatory;
(b) number of thunderstorm
discharges, which propagated
in a unit of time from azimuth
90°–180°;
(c) evolution of the atmospheric
Pressure (P, mmHg);
(d) atmospheric electric field Ez
(V/m) in Paratunka;
(e) minimal distance L
to cyclones.
Curve 1 and dots show AEF
in Paratunka;
2 - AEF (E) value measured
at cyclones absence;
3 - electric field of
Cyclones (difference
between curves 2 and 1);
4 - variations in the
atmospheric pressure (P,
mmHg) during
the approaching of
cyclones.
Insert shows the Evs P relationship.
• Plausible explanations:
• AEF and atmospheric pressure decreases correlate.
Approaching to the point of observation the cyclones give rise
to atmospheric pressure decreasing which in its turn results in
of the AEF decreasing.
• AEF decrease occurs as cyclones bear a high negative charge
which approaching to the observation point generates here an
electric field with reversed polarity.
• Question: Is it anti-cyclone to give rise to increasing of Ez
magnitude?
• To answer this question it is necessary to run experiments on
AEF forcing by the artificial cloud of water steam. A cloud with
high content of water steam is taken to have a negative charge
and vice versa it is a cloud of dry steam to have a positive
charge.
Water steam jet out of the first borehole (a). The jet is about 150 m high. A protective
casing 7 m high is at the centre of the picture, two cars are at the right bottom.
Picture of water steam jet out of the second borehole (b). The jet is not than 30 m
high.
Results of Ez
measurements at
the borehole with
78% water
condensate.
Results of Ez measurements at the borehole with 100% water steam.
Global temperature anomaly &
atmospheric electric field anomaly
KAMCHATKA
As picture
suggests the
temperature is
increasing
synchronously
with AEF being
decreasing.
Change of AEF at the
time of powerful
Sumatra earthquake
recorded by Arezzo
(Italy) seismic station.
At the right, the data
of Paratunka
observatory reveal an
absence of signal
similar to that
recorded at Arezzo.
• CONCLUSIONS:
• 1. Correlation between AEF and GCR during Forbush
decreases is proved to be evident. AEF is recovering its
magnitude faster as compared to the GCR intensity.
•
• 2. The phenomena of the Sun terminator and UT variation of
AEF are revealed in Kamchatka.
• 3. Cyclones were evidently recorded up to 3,000 km from
Kamchatka. Cyclone approaching gives rise to decreasing of
Ez magnitude. The cyclone contains a charge of about 5000 Q.
• 4. Experiments on AEF forcing by steam jet revealed that the
water steam failing water condensate gives rise to AEF
increase and a large volume of water aerosols promotes AEF
decrease. Particles about < 0,5 mkm are reported to assist in
AEF generation.