Monitoring the baric modulation of gas concentration in the Baksan Neutrino Observatory tunnel in the Elbrus Region using a differential absorption lidar

Мұқаба

Дәйексөз келтіру

Толық мәтін

Ашық рұқсат Ашық рұқсат
Рұқсат жабық Рұқсат берілді
Рұқсат жабық Тек жазылушылар үшін

Аннотация

For the first time, concentrations of gases 12CO2,13CO2, СН4, Н2О and the dynamics of Earth degassing under the changing atmospheric pressure were remotely analyzed using a differential absorption lidar. To reduce the influence of external meteorological factors, the sensing was carried out in a dead-end tunnel of the Baksan Neutrino Observatory of the Institute for Nuclear Research of the Russian Academy of Sciences.

Толық мәтін

Рұқсат жабық

Авторлар туралы

S. Pershin

Prokhorov General Physics Institute of the Russian Academy of Sciences

Хат алмасуға жауапты Автор.
Email: pershin@kapella.gpi.ru
Ресей, Moscow

E. Gordeev

Institute of Volcanology and Seismology Far Eastern Branch of the Russian Academy of Sciences

Email: pershin@kapella.gpi.ru

Academician of the RAS

Ресей, Petropavlovsk-Kamchatsky

M. Grishin

Prokhorov General Physics Institute of the Russian Academy of Sciences

Email: pershin@kapella.gpi.ru
Ресей, Moscow

V. Zavozin

Prokhorov General Physics Institute of the Russian Academy of Sciences

Email: pershin@kapella.gpi.ru
Ресей, Moscow

V. Makarov

Space Research Institute of the Russian Academy of Sciences

Email: pershin@kapella.gpi.ru
Ресей, Moscow

N. Lednev

Prokhorov General Physics Institute of the Russian Academy of Sciences

Email: pershin@kapella.gpi.ru
Ресей, Moscow

Ya. Ponurovskiy

Prokhorov General Physics Institute of the Russian Academy of Sciences

Email: pershin@kapella.gpi.ru
Ресей, Moscow

D. Stavrovskii

Prokhorov General Physics Institute of the Russian Academy of Sciences

Email: pershin@kapella.gpi.ru
Ресей, Moscow

A. Ushakov

Prokhorov General Physics Institute of the Russian Academy of Sciences

Email: pershin@kapella.gpi.ru
Ресей, Moscow

V. Kazalov

Institute for Nuclear Research of the Russian Academy of Sciences

Email: pershin@kapella.gpi.ru
Ресей, Moscow

Әдебиет тізімі

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Әрекет
1. JATS XML
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2. Fig. 1. Schematic diagram of a dead-end tunnel at the end of the auxiliary tunnel of the Baksan Neutrino Observatory.

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3. Fig. 2. Block diagram of a differential absorption lidar based on near-infrared diode lasers for measuring gas concentrations: 1 – laser radiation unit, 2 – control unit, data reception and processing, 3 – receiving and transmitting optical system with fiber input, 4 – analytical signal detector, 5 – diode module laser, 6 – fiber splitter, 7 – comparison cuvette with Fabry-Perot interferometer, 8 – comparison signal detector, 9 – digital programmable module, 10 – DAC and ADC module, 11 – analog signal converter module, 12 – fiber optic cable.

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4. Fig. 3. a) A general view of the differential absorption lidar receiving and transmitting unit, b) an electronic lidar control unit with a computer at the top, on the monitor of which examples of laser frequency tuning by changing the pump current are shown.

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5. Fig. 4. Variations in atmospheric pressure, concentrations of gases CH4,12CO2 and 13CO2, H2O and the ratio 13CO2/12CO2.

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6. Fig. 5. Examples of the “pumping effect” with pressure surges of 1.5 (a) and 3 (b) mmHg in the dead-end tunnel of the BNR in 2023: pressure change – pink line 1, CO2 concentration – green line 2, H2O concentration – blue line 3.

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© Russian Academy of Sciences, 2024

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