Measurements of transience and downward fluid flow near episodic methane gas vents, Hydrate Ridge, Cascadia

Research Article| December 01, 1999 Measurements of transience and downward fluid flow near episodic methane gas vents, Hydrate Ridge, Cascadia Michael D. Tryon; Michael D. Tryon 1Scripps Institution of Oceanography, University of California, San Diego, La Jolla, California 92093-0220, USA Search for other works by this author on: GSW Google Scholar Kevin M. Brown; Kevin M. Brown 1Scripps Institution of Oceanography, University of California, San Diego, La Jolla, California 92093-0220, USA Search for other works by this author on: GSW Google Scholar Marta E. Torres; Marta E. Torres 2Oregon State University, Center for Oceanic and Atmospheric Science, Corvallis, Oregon 97331-5503, USA Search for other works by this author on: GSW Google Scholar Anne M. Tréhu; Anne M. Tréhu 2Oregon State University, Center for Oceanic and Atmospheric Science, Corvallis, Oregon 97331-5503, USA Search for other works by this author on: GSW Google Scholar James McManus; James McManus 2Oregon State University, Center for Oceanic and Atmospheric Science, Corvallis, Oregon 97331-5503, USA Search for other works by this author on: GSW Google Scholar Robert W. Collier Robert W. Collier 2Oregon State University, Center for Oceanic and Atmospheric Science, Corvallis, Oregon 97331-5503, USA Search for other works by this author on: GSW Google Scholar Author and Article Information Michael D. Tryon 1Scripps Institution of Oceanography, University of California, San Diego, La Jolla, California 92093-0220, USA Kevin M. Brown 1Scripps Institution of Oceanography, University of California, San Diego, La Jolla, California 92093-0220, USA Marta E. Torres 2Oregon State University, Center for Oceanic and Atmospheric Science, Corvallis, Oregon 97331-5503, USA Anne M. Tréhu 2Oregon State University, Center for Oceanic and Atmospheric Science, Corvallis, Oregon 97331-5503, USA James McManus 2Oregon State University, Center for Oceanic and Atmospheric Science, Corvallis, Oregon 97331-5503, USA Robert W. Collier 2Oregon State University, Center for Oceanic and Atmospheric Science, Corvallis, Oregon 97331-5503, USA Publisher: Geological Society of America First Online: 02 Jun 2017 Online ISSN: 1943-2682 Print ISSN: 0091-7613 Geological Society of America Geology (1999) 27 (12): 1075–1078. https://doi.org/10.1130/0091-7613(1999)0272.3.CO;2 Article history First Online: 02 Jun 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn Email Permissions Search Site Citation Michael D. Tryon, Kevin M. Brown, Marta E. Torres, Anne M. Tréhu, James McManus, Robert W. Collier; Measurements of transience and downward fluid flow near episodic methane gas vents, Hydrate Ridge, Cascadia. Geology 1999;; 27 (12): 1075–1078. doi: https://doi.org/10.1130/0091-7613(1999)0272.3.CO;2 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietyGeology Search Advanced Search Abstract Aqueous flux measurements within cold seep regions on northern Hydrate Ridge, Cascadia, indicate a high degree of variability, with extended periods of downflow and reversals of flow direction over periods of weeks to months. Local episodic venting of free methane gas was also observed. The instruments recorded similar changes in hydrologic flow patterns both on and off clam fields, the magnitude of the flow rates decreasing away from the clam field. The coincidence of episodic gas venting with nearby highly variable aqueous fluid flow suggests that they may be coupled. We propose that these observations are consistent with the action of a gas-driven pump that operates somewhat like a geyser. The hypothesis of gas-driven pumping of seawater through northern Hydrate Ridge has important ramifications for the mass fluxes through this region. First Page Preview Close Modal You do not have access to this content, please speak to your institutional administrator if you feel you should have access.