Entrainment in bottom gravity currents over complex topography from three-dimensional nonhydrostatic simulations

Tamay M. Özgökmen, Paul F. Fischer, Jinqiao Duan, Traian Iliescu

Research output: Contribution to journalArticle

38 Scopus citations

Abstract

By recognizing that oceanic overflows follow the seafloor morphology, which shows a self-similar structure at spatial scales ranging from 100 km to 1 m, the impact of topographic bumps on entrainment in gravity currents is investigated using a 3D nonhydrostatic spectral element model. It is found that a bumpy surface can lead to a significant enhancement of entrainment compared to a smooth surface. The change in entrainment is parameterized as a function of statistical estimates of the amplitude and wavenumber parameters of bumps with respect to the background slope.

Original languageEnglish (US)
Pages (from-to)L13212 1-4
JournalGeophysical Research Letters
Volume31
Issue number13
DOIs
StatePublished - Jul 16 2004

ASJC Scopus subject areas

  • Geophysics
  • Earth and Planetary Sciences(all)

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