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Regional and local geothermal conditions in the northern Black Sea
Kutas, R. I.; Poort, J. (2008). Regional and local geothermal conditions in the northern Black Sea. Int. J. Earth Sci. 97(2): 353-363. dx.doi.org/10.1007/s00531-007-0216-9
In: International Journal of Earth Sciences. Springer: Berlin; Heidelberg. ISSN 1437-3254; e-ISSN 1437-3262
Peer reviewed article  

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Trefwoord
    Marien
Author keywords
    Black Sea; Temperature; Heat flow; Gas seeps; Mud volcano

Auteurs  Top 
  • Kutas, R. I.
  • Poort, J.

Abstract
    More than 100 new heat flow measurements have been collected in recent years (2002–2004) in different tectonic environments of the northern Black Sea. The northern periphery of the Black Sea is characterized by strong geodynamic and seismic activity, high sedimentation rates, diapiric structures, mud volcanism, and fluid and gas escape at the sea floor. We present new thermal data from the shelf, continental slope and deep-water basin, measured off-shore using a marine thermo-probe and on-shore in drill holes. Heat flow density ranges from 20 to more than 2,000 mW/m2. For two local areas (the Dnieper gas seeps and the Dvurechenski mud volcano area), we discuss the relation between heat flow variability and the geological and physical processes in the near-bottom sediment layer. The Dnieper gas seeps area is characterized by strong small-scale heat flow variability and is controlled by fluid and gas migration. In the Dvurechenski active mud volcano, the near-bottom temperature in sediments is anomalously elevated because additional heat is carried out by mass flows of fluids and clay minerals. Away from the mud volcano heat flow quickly decreases to background values.

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