Methane hydrate stability and potential resource in the levant basin, southeastern mediterranean sea

Ziv Tayber, Aaron Meilijson, Zvi Ben-Avraham, Yizhaq Makovsky*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

20 Scopus citations


To estimate the potential inventory of natural gas hydrates (NGH) in the Levant Basin, southeastern Mediterranean Sea, we correlated the gas hydrate stability zone (GHSZ), modeled with local thermodynamic parameters, with seismic indicators of gas. A compilation of the oceanographic measurements defines the >1 km deep water temperature and salinity to 13.8 C and 38.8‰ respectively, predicting the top GHSZ at a water depth of ~1250 m. Assuming sub-seafloor hydrostatic pore-pressure, water-body salinity, and geothermal gradients ranging between 20 to 28.5 C/km, yields a useful first-order GHSZ approximation. Our model predicts that the entire northwestern half of the Levant seafloor lies within the GHSZ, with a median sub-seafloor thickness of ~150 m. High amplitude seismic reflectivity (HASR), correlates with the active seafloor gas seepage and is distributed across the deep-sea fan of the Nile within the Levant Basin. Trends observed in the distribution of the HASR are suggested to represent: (1) Shallow gas and possibly hydrates within buried channel-lobe systems 25 to 100 mbsf; and (2) a regionally discontinuous bottom simulating reflection (BSR) broadly matching the modeled base of GHSZ. We therefore estimate the potential methane hydrates resources within the Levant Basin at ~100 trillion cubic feet (Tcf) and its carbon content at ~1.5 gigatonnes.

Original languageEnglish
Article number306
JournalGeosciences (Switzerland)
Issue number7
StatePublished - 2019


FundersFunder number
Moses Strauss Department of Marine Geosciences and Leon H. Charney School of Marine Sciences
University of Haifa


    • Climate change
    • Eastern Mediterranean
    • Gas hydrates
    • Levant Basin
    • Methane stability
    • Seismic interpretation


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