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dc.contributor.authorHill, T. M.  Concept link
dc.contributor.authorKennett, J. P.  Concept link
dc.contributor.authorValentine, David L.  Concept link
dc.contributor.authorYang, Z.  Concept link
dc.contributor.authorReddy, Christopher M.  Concept link
dc.contributor.authorNelson, Robert K.  Concept link
dc.contributor.authorBehl, R. J.  Concept link
dc.contributor.authorRobert, C.  Concept link
dc.contributor.authorBeaufort, L.  Concept link
dc.date.accessioned2006-09-15T18:51:14Z
dc.date.available2006-09-15T18:51:14Z
dc.date.issued2006-07-31
dc.identifier.urihttps://hdl.handle.net/1912/1222
dc.descriptionAuthor Posting. © The Authors, 2006. This is the author's version of the work. It is posted here by permission of National Academy of Sciences for personal use, not for redistribution. The definitive version was published in Proceedings of the National Academy of Sciences of the United States of America 103 (2006): 13570-13574, doi:10.1073/pnas.0601304103.en
dc.description.abstractMarine hydrocarbon seepage emits oil and gas, including methane (~30 Tg CH4/year), to the ocean and atmosphere. Sediments from the California margin contain preserved tar, primarily formed via hydrocarbon weathering at the sea surface. We present a record of variation in the abundance of tar in sediments for the past 32ky, providing evidence for increases in hydrocarbon emissions prior to and during Termination IA (16-14 ka) and again over Termination IB (11-10 ka). Our study provides the first direct evidence for increased hydrocarbon seepage associated with deglacial warming via tar abundance in marine sediments, independent of previous geochemical proxies. Climate-sensitive gas hydrates may modulate thermogenic hydrocarbon seepage during deglaciation.en
dc.description.sponsorshipThis work has been supported by the U.S. National Science Foundation (OCE-0242041, Kennett; OCE-0447395, Valentine; IIS-0430835, Reddy) and UC Santa Barbara (Graduate Dissertation Fellowship to T. Hill).en
dc.format.extent2373422 bytes
dc.format.mimetypeapplication/pdf
dc.language.isoen_USen
dc.relation.urihttps://doi.org/10.1073/pnas.0601304103
dc.subjectQuaternary climateen
dc.subjectPaleoclimateen
dc.subjectHydrocarbonen
dc.subjectMethaneen
dc.titleClimatically driven emissions of hydrocarbons from marine sediments during deglaciationen
dc.typePreprinten


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