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Geo-Marine Letters

, Volume 21, Issue 2, pp 103–122 | Cite as

Distribution of free gas in marine sediments: a global overview

  •  P. Fleischer
  •  T. Orsi
  •  M. Richardson
  •  A. Anderson

Abstract.

To quantify the global distribution of free gas in shallow marine sediments, we have identified and indexed over 100 documented cases in the scientific and engineering literature. Our survey confirms previous assumptions, primarily that gas bubbles are ubiquitous in the organic-rich muds of coastal waters and shallow adjacent seas. Acoustic turbidity, as recorded during seismo-acoustic surveys, is the most frequently cited evidence used to infer the presence of seafloor gas. Biogenic methane predominates within these shallow subbottom deposits. Because of their global prevalence, growing interest in gassy marine sediments is understandable, as their presence can have profound scientific, engineering and environmental significance.

Keywords

Methane Turbidity Coastal Water Marine Sediment Environmental Significance 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag 2001

Authors and Affiliations

  •  P. Fleischer
    • 1
  •  T. Orsi
    • 2
  •  M. Richardson
    • 1
  •  A. Anderson
    • 3
  1. 1.Naval Research Laboratory, Stennis Space Center, MS 39529-5004, USA
  2. 2.Planning Systems Incorporated, 115 Christian Lane, Slidell, LA 70458, USA
  3. 3.Department of Oceanography, Texas A&M University, College Station, TX 77843-3146, USA

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