Výsledky vyhledávání - "Alexander Shepetov"

Akademický článek

A PLL-Based Doppler Method Using an SDR-Receiver for Investigation of Seismogenic and Man-Made Disturbances in the Ionosphere

Autor: Nazyf Salikhov, Alexander Shepetov, Galina Pak, Vladimir Saveliev, Serik Nurakynov, Vladimir Ryabov, Valery Zhukov

Publikováno v: Geosciences, Vol 14, Iss 7, p 192 (2024)

The article describes in detail the equipment and method for measuring the Doppler frequency shift (DFS) on an inclined radio path, based on the principle of the phase-locked loop using an SDR receiver for the investigation of seismogenic and man-mad

Externí odkaz: https://doaj.org/article/03f822a6a7c84afcb5fa9155ebbe3c79

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Akademický článek

Investigation of the Pre- and Co-Seismic Ionospheric Effects from the 6 February 2023 M7.8 Turkey Earthquake by a Doppler Ionosonde

Autor: Nazyf Salikhov, Alexander Shepetov, Galina Pak, Serik Nurakynov, Azamat Kaldybayev, Vladimir Ryabov, Valery Zhukov

Publikováno v: Atmosphere, Vol 14, Iss 10, p 1483 (2023)

During the catastrophic M7.8 earthquake in Turkey on 6 February 2023, anomalous effects were revealed in the ionosphere associated with various propagation mechanisms of seismogenic disturbance from the lithosphere up to the height of the ionosphere.

Externí odkaz: https://doaj.org/article/a61c4e59b33c4bda8b4e278964d059e9

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Akademický článek

Disturbances of Doppler Frequency Shift of Ionospheric Signal and of Telluric Current Caused by Atmospheric Waves from Explosive Eruption of Hunga Tonga Volcano on January 15, 2022

Autor: Nazyf Salikhov, Alexander Shepetov, Galina Pak, Vladimir Saveliev, Serik Nurakynov, Vladimir Ryabov, Valery Zhukov

Publikováno v: Atmosphere, Vol 14, Iss 2, p 245 (2023)

After the explosive eruption of the Hunga Tonga volcano on 15 January 2022, disturbances were observed at a distance of about 12,000 km in Northern Tien Shan and regarded variations in the atmospheric pressure, in telluric current, and in the Doppler

Externí odkaz: https://doaj.org/article/638579864c4449ca8f847c523e3d8805

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Akademický článek

Monitoring of Gamma Radiation Prior to Earthquakes in a Study of Lithosphere-Atmosphere-Ionosphere Coupling in Northern Tien Shan

Autor: Nazyf Salikhov, Alexander Shepetov, Galina Pak, Serik Nurakynov, Vladimir Ryabov, Nurzhan Saduyev, Turlan Sadykov, Zhumabek Zhantayev, Valery Zhukov

Publikováno v: Atmosphere, Vol 13, Iss 10, p 1667 (2022)

Monitoring radiation background in the near-surface atmosphere and gamma rays, geoacoustic emission, and temperature in a borehole at 40 m depth, as well as Doppler sounding on a low-inclined radio pass, proceeded at the Tien Shan mountain station (3

Externí odkaz: https://doaj.org/article/1a233767a4db4fc89b632b2f3ba823c0

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