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Record #103764:

Role of methane clathrates in past and future climates / Gordon J. MacDonald.

Title: Role of methane clathrates in past and future climates / Gordon J. MacDonald.
Author(s): MacDonald, Gordon J.
Date: 1990.
In: Climatic Change. (1990.), Vol. 16(3) (1990)
Abstract: Large quantities of carbon (c. 11,000 Gt) are stored as clathrates in carbon-rich sediments on continental shelves and in ocean basins. Smaller quantities (c. 400 Gt) are locked in clathrates under permafrost. Thermodynamic stability of clathrates limits depth at which they occur to 1000 to 1500 m. Shallowness of clathrate zone of stability implies that changes in temperature and pressure at surface will result in stabilization or destabilization of clathrates over times of several hundreds to many thousands of years. Suggests that, during ice ages, clathrates play significant role in determining atmospheric composition.
Notes:

Climatic Change. Vol. 16(3) :247-281 (1990).

Keywords: 551.583.3 -- Climatic changes, Quaternary.
551.583 -- Climatic changes.
551.345.3 -- Permafrost, composition and structure. Ice wedges.
E9 -- Glaciology: meteorology and climatology.
SPRI record no.: 103764

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520 3# ‡aLarge quantities of carbon (c. 11,000 Gt) are stored as clathrates in carbon-rich sediments on continental shelves and in ocean basins. Smaller quantities (c. 400 Gt) are locked in clathrates under permafrost. Thermodynamic stability of clathrates limits depth at which they occur to 1000 to 1500 m. Shallowness of clathrate zone of stability implies that changes in temperature and pressure at surface will result in stabilization or destabilization of clathrates over times of several hundreds to many thousands of years. Suggests that, during ice ages, clathrates play significant role in determining atmospheric composition.
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650 07 ‡a551.583 -- Climatic changes.‡2udc
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