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Abstract <p>We report for the first time to our knowledge an asymmetry in the signals of the laser strainmeter at the Baksan Neutrino Observatory (BNO), Elbrus area during the first and second earthquakes in Turkey on February 6, 2023, which had nearly identical magnitudes. A correlation has been detected between the signals of the laser strainmeter and the temperature inside the bedrock foundation in the BNO dead-end tunnel, as well as the signal of aerosol lidar during the second magnitude 7.7 earthquake occurring at 10:24 UTC. The radius of the stress zone around the epicenters was estimated as ∼2000 km, which exceeds the distance to the BNO tunnels (~900 km) and thus admits of the variations of stress and strain to be seen in the signals of the laser strainmeter, the thermometer, and the lidar.</p>

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The Correlation between Signals of Aerosol Lidar, Laser Strainmeter, and the Temperature of Gas in Bedrock: Measurements in the Baksan Neutrino Observatory during the Earthquakes in Turkey on February 6, 2023

  • 期刊论文

  • 发表日期：

    2025年6月24日

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  • S. M. Pershin,
  • E. I. Gordeev,
  • V. V. Gravirov,
  • M. Ya. Grishin,
  • V. A. Zavozin,
  • V. N. Lednev,
  • D. V. Likhodeev,
  • V. S. Makarov,
  • A. V. Myasnikov,
  • A. A. Ushakov

摘要

Abstract

We report for the first time to our knowledge an asymmetry in the signals of the laser strainmeter at the Baksan Neutrino Observatory (BNO), Elbrus area during the first and second earthquakes in Turkey on February 6, 2023, which had nearly identical magnitudes. A correlation has been detected between the signals of the laser strainmeter and the temperature inside the bedrock foundation in the BNO dead-end tunnel, as well as the signal of aerosol lidar during the second magnitude 7.7 earthquake occurring at 10:24 UTC. The radius of the stress zone around the epicenters was estimated as ∼2000 km, which exceeds the distance to the BNO tunnels (~900 km) and thus admits of the variations of stress and strain to be seen in the signals of the laser strainmeter, the thermometer, and the lidar.