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SEISMOGEODYNAMICS OF THE CASPIAN SEA FOR 2018-2020 YEARS

Year 2021, Volume: 20 Issue: 2, 33 - 42, 29.12.2021

Saida Ismayilova Sabina Kazimova

Abstract

The seismogeodynamics analysis of the aquatorium of Caspian Sea in the Azerbaijani sector was conducted in 2018-2020 years.The first information about the earthquake in the Caspian Sea aquatorium dates back to 957 year and the last strong earthquake (M = 6.2) occurred on November 25, 2000, 50-60 km south of Absheron region.Analysis of the number of earthquakes and seismic energy shows that while the stability of seismic energy from 2016 to 2018 years was stable, in 2019 the seismic energy was twice as high.In 2020, an increase in the number of earthquakes and seismic energy compared to 2019 was observed. Seismic analysis showed that the earthquakes in the North Caspian Sea (with magnitude of ≥1.0) are associated with the activation of the Makhachkala-Krasnovodsk and Absheron-Near Balkhan faults.Earthquakes with a magnitude of ≥2.0, mainly with a magnitude of ≥3.0 occurred in the center of the Caspian Sea.The concentration of earthquakes was observed at the intersection of Agrakhan-Krasnovodsk, Makhachkala Krasnovodsk, Sangachal-Ogurchu and transverse GarabogazSafidrud faults. Analysis of the stress-strain areas of the Earth's crust showed that the values of displacement in the source are dominated by normal fault type movements.However, in the Central Caspian and oil fields (Azeri, Gunashli, Chirag) there are strike-slip movements.The compression and tension axes of the earthquakes show that the compression axes of the earthquakes are oriented in the direction of SW-NE, and the tension axes are mainly oriented in the direction of NW-SE. The stress situation in the study area varies over the years and is mainly characterized by extension stress.

Keywords

seismogeodynamics Caspian Sea oil fields mechanisms of earthquake sources.

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There are 15 citations in total.

Details

Primary Language English
Subjects Seismology and Seismic Exploration, Geophysics (Other)
Journal Section Research Article
Authors

Saida Ismayilova This is me

Sabina Kazimova

Publication Date December 29, 2021
Published in Issue Year 2021 Volume: 20 Issue: 2

Cite

APA Ismayilova, S., & Kazimova, S. (2021). SEISMOGEODYNAMICS OF THE CASPIAN SEA FOR 2018-2020 YEARS. Seismoprognosis Observations in the Territory of Azerbaijan, 20(2), 33-42.
AMA Ismayilova S, Kazimova S. SEISMOGEODYNAMICS OF THE CASPIAN SEA FOR 2018-2020 YEARS. Seismoprognosis Observations in the Territory of Azerbaijan. December 2021;20(2):33-42.
Chicago Ismayilova, Saida, and Sabina Kazimova. “SEISMOGEODYNAMICS OF THE CASPIAN SEA FOR 2018-2020 YEARS”. Seismoprognosis Observations in the Territory of Azerbaijan 20, no. 2 (December 2021): 33-42.
EndNote Ismayilova S, Kazimova S (December 1, 2021) SEISMOGEODYNAMICS OF THE CASPIAN SEA FOR 2018-2020 YEARS. Seismoprognosis Observations in the Territory of Azerbaijan 20 2 33–42.
IEEE S. Ismayilova and S. Kazimova, “SEISMOGEODYNAMICS OF THE CASPIAN SEA FOR 2018-2020 YEARS”, Seismoprognosis Observations in the Territory of Azerbaijan, vol. 20, no. 2, pp. 33–42, 2021.
ISNAD Ismayilova, Saida - Kazimova, Sabina. “SEISMOGEODYNAMICS OF THE CASPIAN SEA FOR 2018-2020 YEARS”. Seismoprognosis Observations in the Territory of Azerbaijan 20/2 (December2021), 33-42.
JAMA Ismayilova S, Kazimova S. SEISMOGEODYNAMICS OF THE CASPIAN SEA FOR 2018-2020 YEARS. Seismoprognosis Observations in the Territory of Azerbaijan. 2021;20:33–42.
MLA Ismayilova, Saida and Sabina Kazimova. “SEISMOGEODYNAMICS OF THE CASPIAN SEA FOR 2018-2020 YEARS”. Seismoprognosis Observations in the Territory of Azerbaijan, vol. 20, no. 2, 2021, pp. 33-42.
Vancouver Ismayilova S, Kazimova S. SEISMOGEODYNAMICS OF THE CASPIAN SEA FOR 2018-2020 YEARS. Seismoprognosis Observations in the Territory of Azerbaijan. 2021;20(2):33-42.
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