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| Titel |
IR spectral analysis for the diagnostics of crust earthquake precursors |
| VerfasserIn |
R. M. Umarkhodgaev, V. A. Liperovsky, V. V. Mikhailin, C.-V. Meister, D. Ju. Naumov |
| Konferenz |
EGU General Assembly 2012
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 14 (2012) |
| Datensatznummer |
250070859
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| Zusammenfassung |
| In regions of future earthquakes, a few days before the seismic shock, the emanation of radon
and hydrogen is being observed, which causes clouds of increased ionisation in the
atmosphere. In the present work the possible diagnostics of these clouds using infrared (IR)
spectroscopy is considered, which may be important and useful for the general geophysical
system of earthquake prediction and the observation of industrial emissions of radioactive
materials into the atmosphere.
Some possible physical processes are analysed, which cause, under the condition of
additional ionisation in a pre-breakdown electrical field, emissions in the IR interval. In doing
so, the transparency region of the IR spectrum at wavelengths of 7-15 μm is taken into
account. This transparency region corresponds to spectral lines of small atmospheric
constituents like CH4, CO2, N2O, NO2, NO, and O3. The possible intensities of the IR
emissions observable in laboratories and in nature are estimated. The acceleration process of
the electrons in the pre-breakdown electrical field before its adhesion to the molecules is
analysed.
The laboratory equipment for the investigation of the IR absorption spectrum is constructed
for the cases of normal and decreased atmospheric pressures. The syntheses of
ozone and nitrous oxides are performed in the barrier discharge. It is studied if the
products of the syntheses may be used to model atmospheric processes where these
components take part. Spectra of products of the syntheses in the wavelength region
of 2-10 μm are observed and analysed. A device is created for the syntheses and
accumulation of nitrous oxides. Experiments to observe the IR-spectra of ozone and nitrous
oxides during the syntheses and during the further evolution of these molecules are
performed.
For the earthquake prediction, practically, the investigation of emission spectra is most
important, but during the laboratory experiments, the radiation of the excited molecules is
shifted by a time interval which is larger than the duration of the barrier discharge
and lasts until a noticeable, measurable heating of the chamber occurs. Thus the
modification of the laboratory equipment to measure emission spectra is a special
task. Besides the working volume of the chamber has to be enlarged considerably. |
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