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Articles | Volume 17, issue 8
Articles | Volume 17, issue 8
https://doi.org/10.5194/se-17-923-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/se-17-923-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 17, issue 8
Research article
 | 
05 Aug 2026
Research article |  | 05 Aug 2026

Gas migration and slope instability in the Danube Fan: insights from integrated OBS-MCS seismic analysis

Helene-Sophie Hilbert, Anke Dannowski, Jörg Bialas, Felix Gross, Jasper Hoffmann, Dirk Klaeschen, and Christian Berndt

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Short summary
This study investigates gas hydrate distribution in the Danube Fan, NW Black Sea. Using seismic data and drilling results, we analysed the structure, composition, and gas content of underconsolidated sediments. Gas hydrates are present in low concentration and patchy distribution. Free gas is trapped beneath the hydrate stability zone. The area shows signs of past slope failures linked to weak sediments and gas accumulation. The study provides insights into how gas hydrate systems evolve.
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