Accumulation of Gas Hydrates at the Bottom of the Sea during Sequential Deposits of Sediments with Different Transport Properties

摘要

Investigations of gas hydrate formation in the bottom sediments have developed intensively in the last few decades owing to the importance of gas hydrates as gas sources [1]. The geophysical studies have revealed more than 200 hydrate manifestations in the World Ocean, mainly in the offshore zones where favorable conditions for the generation of biogenic and ther-mogenic gas are realized [2]. Methane clathrates are stable in a specific temperature and pressure range [3], which determines the modern depth of their possible localization.