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Pockmark asymmetry and seafloor currents in the Santos Basin offshore Brazil

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Schattner, U., Lazar, M., Souza, L.A.P. et al. Geo-Mar Lett (2016). doi:10.1007/s00367-016-0468-0

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Pockmarks form by gas/fluid expulsion into the ocean and are preserved under conditions of negligible sedimentation. Ideally, they are circular at the seafloor and symmetrical in profile. Elliptical pockmarks are more enigmatic. They are associated with seafloor currents while asymmetry is connected to sedimentation patterns. This study examines these associations through morphological analysis of new multibeam data collected across the Santos continental slope offshore Brazil in 2011 (353–865 mbsl). Of 984 pockmarks, 78% are both elliptical and asymmetric. Geometric criteria divide the pockmarks into three depth ranges that correlate with a transition between two currents: the Brazil Current transfers Tropical Water and South Atlantic [...]

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Type Scheme Key
local-index unknown 70176471
local-pk unknown 70176471
doi http://www.loc.gov/standards/mods/mods-outline-3-5.html#identifier doi:10.1007/s00367-016-0468-0
series unknown Geo-Marine Letters

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journalGeo-Marine Letters
parts
typevolume
value36
typeissue
value6
languageEnglish
citationTypeArticle

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