dc.contributor.author | Ge, Zhiyuan | |
dc.contributor.author | Nemec, Wojciech | |
dc.contributor.author | Vellinga, Age | |
dc.contributor.author | Gawthorpe, Robert Leslie | |
dc.date.accessioned | 2022-02-07T07:33:16Z | |
dc.date.available | 2022-02-07T07:33:16Z | |
dc.date.created | 2022-01-23T15:38:13Z | |
dc.date.issued | 2022 | |
dc.identifier.issn | 2375-2548 | |
dc.identifier.uri | https://hdl.handle.net/11250/2977345 | |
dc.description.abstract | The deposition of a classic turbidite by a surge-type turbidity current, as envisaged by conceptual models, is widely considered a discrete event of continuous sediment accumulation at a falling rate by the gradually waning density flow. Here, we demonstrate, on the basis of a high-resolution advanced numerical CFD (computational fluid dynamics) simulation and rock-record examples, that the depositional event in reality involves many brief episodes of nondeposition. The reason is inherent hydraulic fluctuations of turbidity current energy driven by interfacial Kelvin-Helmholtz waves. The experimental turbidity current, with realistic grain-size composition of a natural turbidite, used only 26 to 33% of its in-place flow time for deposition, while the remaining time went to the numerous episodes of sediment bypass and transient erosion. The general stratigraphic notion of a gross incompleteness of sedimentary record may then extend down to the deposition time scale of a single turbidite. | en_US |
dc.language.iso | eng | en_US |
dc.publisher | American Association for the Advancement of Science | en_US |
dc.rights | Navngivelse 4.0 Internasjonal | * |
dc.rights.uri | http://creativecommons.org/licenses/by/4.0/deed.no | * |
dc.title | How is a turbidite actually deposited? | en_US |
dc.type | Journal article | en_US |
dc.type | Peer reviewed | en_US |
dc.description.version | publishedVersion | en_US |
dc.rights.holder | Copyright 2022 The Authors | en_US |
dc.source.articlenumber | eabl9124 | en_US |
cristin.ispublished | true | |
cristin.fulltext | original | |
cristin.qualitycode | 1 | |
dc.identifier.doi | 10.1126/sciadv.abl9124 | |
dc.identifier.cristin | 1988067 | |
dc.source.journal | Science Advances | en_US |
dc.identifier.citation | Science Advances. 2022, 8 (3), eabl9124. | en_US |
dc.source.volume | 8 | en_US |
dc.source.issue | 3 | en_US |