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Filtering by: Creator Suess, Erwin Creator Collier, Robert W. Language English [eng]

Distribution and height of methane bubble plumes on the Cascadia Margin characterized by acoustic imaging

Creator:

Heeschen, Katja U., Tréhu, Anne Martine, Collier, Robert W., Suess, Erwin, and Rehder, Gregor

Abstract:

Submersible investigations of the Cascadia accretionary complex have identified localized venting of methane gas bubbles in association with gas hydrate occurrence. Acoustic profiles of these bubble plumes in the water column in the vicinity of Hydrate Ridge offshore Oregon provide new constraints on the spatial distribution of these gas vents...

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and Atmospheric Sciences, Oregon State University, Corvallis, Oregon, USA Erwin Suess and Gregor
Methane sources, distributions, and fluxes from vent sites at Hydrate Ridge, Cascadia Margin

Creator:

Heeschen, Katja U., Collier, Robert W., de Angelis, Marie A., Suess, Erwin, Rehder, Gregor, Linke, Peter, and Klinkhammer, Gary P.

Abstract:

To constrain the fluxes of methane (CH4) in the water column above the accretionary wedge along the Cascadia continental margin, we measured methane and its stable carbon isotope signature (δ¹³C-CH₄). The studies focused on Hydrate Ridge (HR), where venting occurs in the presence of gas-hydrate-bearing sediments. The vent CH₄ has...

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. de Angelis,4 Erwin Suess,5 Gregor Rehder,5 Peter Linke,5 and Gary P. Klinkhammer1 Received 24 March