نتایج جستجو برای: red sea oceanic spreading

تعداد نتایج: 317395  

Journal: Geopersia 2017

The North Tabriz Fault is seismologically an active fault with current right lateral strike-slip movements. Restricted mafic to intermediate Late Cretaceous igneous rocks are exposed along the North Tabriz Fault. Whole rock samples and clinopyroxene phenocrysts geochemistry were studied in order to characterize the petrogenesis of these mafic rocks and their possible relation to an oceanic crus...

2012

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2014
Katherine L. Mansfield Jeanette Wyneken Warren P. Porter Jiangang Luo

Few at-sea behavioural data exist for oceanic-stage neonate sea turtles, a life-stage commonly referred to as the sea turtle 'lost years'. Historically, the long-term tracking of small, fast-growing organisms in the open ocean was logistically or technologically impossible. Here, we provide the first long-term satellite tracks of neonate sea turtles. Loggerheads (Caretta caretta) were remotely ...

2006
N. A. N. Bertler P. J. Barrett

Here we discuss the cause and effect of opposing atmospheric and oceanic ENSO forcings in the Ross Sea, that lead to a net warming in the eastern Ross Sea and a net cooling in the western Ross Sea during El Niño years. During La Niña years the opposite is observed. The oceanic ENSO effect causes a ∼1 K warming with a 3 month lag during El Niño years in comparison to La Niña time periods. During...

Journal: :Terra Nova 2022

The Cenozoic development of the Scotia Sea and opening Drake Passage evolved in a complex tectonic setting with sea-floor spreading accompanied by dispersal continental fragments creation rifted oceanic basins. post-Eocene is relatively well established, but Late Mesozoic palaeo-locations many prior to are largely unknown, almost no geological control on submerged banks. Detrital zircon analysi...

2015
Marco Maffione Cedric Thieulot Douwe J. J. van Hinsbergen Antony Morris Wim Spakman

Subduction initiation is a critical link in the plate tectonic cycle. Intraoceanic subduction zones can form along transform faults and fracture zones, but how subduction nucleates parallel to mid-ocean ridges, as in e.g., the Neotethys Ocean during the Jurassic, remains a matter of debate. In recent years, extensional detachment faults have been widely documented adjacent to slow-spreading and...

2007
Jun Korenaga

Heat flux from convection in Earth's mantle has recently been suggested to vary substantially (20–30%) with the Wilson cycle of continental aggregation and dispersal, because of possible changes in the aspect ratio of convective cells, and the present-day heat flux may be at the maximum at such a temporal variation. This possibility of strong temporal fluctuations in heat flux has an important ...

2008
W. Alpers W. Huang

On synthetic aperture radar (SAR) images acquired over the ocean often sea surface signatures of atmospheric gravity waves (AGWs) as well as of oceanic internal waves are visible. They often look quite similar and it is not always easy to decide whether the wave-like patterns result from AGWs or from oceanic internal waves. In this paper we present criteria how to discriminate between these two...

2000
R. Saravanan G. Danabasoglu S. C. Doney James C. McWilliams

The coupled ocean{atmosphere interaction and predictability associated with the tropical El Ni~ no phenomenon has motivated researchers to seek analogous phenomena in the midlatitudes as well. Are there midlatitude coupled ocean{atmosphere modes? Is there signiicant predictability in the midlatitudes? The authors address these questions in the broader context of trying to understand the mechani...

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