CLATHRATE EUSTASY: METHANE HYDRATE MELTING AS A MECHANISM FOR GEOLOGICALLY RAPID SEA-LEVEL FALL
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dc.contributor.author | Bratton J.F. | |
dc.date.accessioned | 2021-01-12T05:15:17Z | |
dc.date.available | 2021-01-12T05:15:17Z | |
dc.date.issued | 1999 | |
dc.identifier | https://elibrary.ru/item.asp?id=13687355 | |
dc.identifier.citation | Geology, 1999, , 10, 915-918 | |
dc.identifier.issn | 0091-7613 | |
dc.identifier.uri | https://repository.geologyscience.ru/handle/123456789/22728 | |
dc.description.abstract | Although submarine methane hydrates or clathrates have been highlighted as potential amplifiers of modern global climate change and associated glacio-eustatic sea-level rise, their potential role in sea-level fall has not been appreciated. Recent estimates of the total volume occupied by gas hydrates in marine sediments vary 20-fold, from 1.2 x 10¹⠴ to 2.4 x 10¹⠵ m³. Using a specific volume change on melting of -21%, dissociation of the current global inventory of hydrate would result in a decrease of submarine hydrate volume of 2.4 x 10¹³ to 5.0 x 10¹⠴ m³. Release of free gas bubbles present beneath hydrates would increase these volumes by 1.1 --2.0 x 10¹³ m³. The combined effects of hydrate melting and subhydrate gas release would result conservatively in a global sea-level fall of 10--146 cm. Such a mechanism may offset some future sea-level rise associated with thermal expansion of the oceans. It could also explain anomalous sea-level drops during ice-free periods such as the early Eocene, the Cretaceous, and the Devonian. | |
dc.subject | Eocene | en |
dc.subject | Devonian | en |
dc.subject | Cretaceous | en |
dc.title | CLATHRATE EUSTASY: METHANE HYDRATE MELTING AS A MECHANISM FOR GEOLOGICALLY RAPID SEA-LEVEL FALL | |
dc.type | Статья | |
dc.subject.age | Кайнозой::Палеоген::Эоцен | ru |
dc.subject.age | Mesozoic::Cretaceous | en |
dc.subject.age | Cenozoic::Paleogene::Eocene | en |
dc.subject.age | Мезозой::Меловая | ru |
dc.subject.age | Палеозой::Девонская | ru |
dc.subject.age | Paleozoic::Devonian | en |
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