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Petroleum seeps may be a significant source of [[pollution]].
Petroleum seeps may be a significant source of [[pollution]].
==Coal Oil Point seep field==
One seep, the [[Coal Oil Point Seep Field]] offshore from [[Santa Barbara, California]] has a seep area of about three [[square kilometer]]s, and releases about 40 [[ton]]s per day of [[methane]] and about 19 tons of reactive organic gas ([[ethane]], [[propane]], [[butane]] and higher [[hydrocarbon]]s), which is about the same as that released by all the cars and trucks in the county {{Fact|date=November 2008}} . The liquid [[petroleum]] produces a slick that is many [[kilometer]]s long and when degraded by [[evaporation]] and [[weathering]], produces tar balls which wash up on the [[beach]]es for miles around.<ref name=UCSB> http://seeps.geol.ucsb.edu/ Hornafius et al.</ref>
This seep also releases on the order of 100 to 150 barrels of liquid petroleum per day.  The field produces about 9 [[cubic meter]]s of natural gas per barrel of petroleum.<ref name=UCSB/>


==See also==
==See also==
[[Tar pit]]
*[[Coal Oil Point seep field]]
*[[Tar pit]]


==References==
==References==

Revision as of 11:19, 17 January 2009

For other uses of "seep" see Seep (disambiguation)

A petroleum seep is a place where liquid or gaseous hydrocarbons escape to the surface through fractures and fissures in the rock and between geological layers. Petroleum seeps are quite common: California has thousands of them. Much of the petroleum discovered in California during the 19th century was from observations of seeps.[1]

Petroleum seeps may be a significant source of pollution.

See also

References

  1. ↑ http://seeps.wr.usgs.gov/ Natural Oil and Gas Seeps in California
  • Hornafius, J.S.Quigley, D.C., and Luyendyk, B.P. "The world's most spectacular marine hydrocarbon seeps (Coal Oil Point, Santa Barbara Channel, California): Quantification of Emissions", Journal of Geophysical Research, v.104, n. C9, pp. 20,703-20,711, September 15, 1999. [1]

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