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Abstract <p>The studies carried out at the newly discovered methane seep site, identified during sonar surveys near Cape Ayu-Dag, complement existing data on the distribution of shallow-water gas emissions off the Crimean coast of the Black Sea. Using the passive acoustic method, the nature of the gas emissions was determined, and the bubble gas flow was estimated to range from 0.1 to 0.2 L/h. Preliminary data from isotopic and gas chemical analyses demonstrated the biogenic nature of the released gas. Further monitoring will make it possible to assess the seasonal and interannual dynamics of activity at the detected seep site near Cape Ayu-Dag, as well as the isotopic and chemical characteristics of the gases.</p>

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A New Site of Methane Fluxes near Cape Ayu-Dag: First Data on Gas Flow and Genesis

  • 期刊论文

  • 发表日期：

    2025年8月1日

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  • A. A. Budnikov,
  • E. A. Krasnova,
  • T. V. Malakhova

摘要

Abstract

The studies carried out at the newly discovered methane seep site, identified during sonar surveys near Cape Ayu-Dag, complement existing data on the distribution of shallow-water gas emissions off the Crimean coast of the Black Sea. Using the passive acoustic method, the nature of the gas emissions was determined, and the bubble gas flow was estimated to range from 0.1 to 0.2 L/h. Preliminary data from isotopic and gas chemical analyses demonstrated the biogenic nature of the released gas. Further monitoring will make it possible to assess the seasonal and interannual dynamics of activity at the detected seep site near Cape Ayu-Dag, as well as the isotopic and chemical characteristics of the gases.