The global occurrence of natural gas hydrate
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Abstract
Natural gas hydrate occurs worldwide in oceanic sediment of continental and insular slopes and rises of active and passive margins, in deep-water sediment of inland lakes and seas, and in polar sediment on both continents and continental shelves. In aquatic sediment, where water depths exceed about 300 m and bottom water temperatures approach 0° C, gas hydrate is found at the seafloor to sediment depths of about 1,100 m. In polar continental regions, gas hydrate can be present in sediment at depths between about 150 and 2000 m. Thus, natural gas hydrate is restricted to the shallow geosphere where its presence affects the physical and chemical properties of near-surface sediment. An updated global inventory reports on natural gas hydrate recovered from 19 places worldwide and includes 77 places where the presence of gas hydrate has been inferred from geophysical, geochemical, and geological evidence. The potential amount of methane in natural gas hydrate is enormous, with current estimates converging around about 10 teratonnes (1019 g) of methane carbon.
| Publication type | Book chapter |
|---|---|
| Publication Subtype | Book Chapter |
| Title | The global occurrence of natural gas hydrate |
| DOI | 10.1029/GM124p0003 |
| Year Published | 2000 |
| Language | English |
| Publisher | American Geophysical Union |
| Publisher location | Natural gas hydrates: Occurrence, distribution, and detection |
| Contributing office(s) | Pacific Coastal and Marine Science Center |
| Description | 16 p. |
| Larger Work Type | Book |
| Larger Work Subtype | Monograph |
| First page | 3 |
| Last page | 18 |
| Google Analytic Metrics | Metrics page |