Concept

Téthys (océan)

Publications associées (10)

Arctic atmospheric mercury: Sources and changes

Global anthropogenic and legacy mercury (Hg) emissions are the main sources of Arctic Hg contamination, primarily transported there via the atmosphere. This review summarizes the state of knowledge of the global anthropogenic sources of Hg emissions, and e ...

2022

Bottom pressure characteristics in a stilling basin downstream of a stepped spillway for two different chute slopes

Anton Schleiss, Michael Pfister, José Pedro Gamito de Saldanha Calado Matos, Ivan Stojnic

In the last decades numerous stepped spillways were built, mostly on the downstream face of roller compacted concrete (RCC) dams. Stilling basins are often used as an energy dissipater. Although the hydraulics of stepped chutes was extensively investigated ...

The University of Queensland2020

A modern scleractinian coral with a two-component calcite–aragonite skeleton

Anders Meibom, Jaroslaw Hubert Stolarski

One of the most conserved traits in the evolution of biomineralizing organisms is the taxon-specific selection of skeletal minerals. All modern scleractinian corals are thought to produce skeletons exclusively of the calcium-carbonate polymorph aragonite. ...

2020

Acceleration of oxygen decline in the tropical Pacific over the past decades by aerosol pollutants

Athanasios Nenes

Dissolved oxygen in the mid-depth tropical Pacific Ocean has declined in the past several decades. The resulting expansion of the oxygen minimum zone has consequences for the region's ecosystem and biogeochemical cycles, but the causes of the oxygen declin ...

Nature Publishing Group2016

OCEAN: An Optimized HW/SW Reliability Mitigation Approach for Scratchpad Memories in Real-Time SoCs

David Atienza Alonso

Recent process technology advances trigger reliability issues that degrade the Quality-of-Service (QoS) required by embedded Systems-on-Chip (SoCs). To maintain the required QoS with acceptable overheads, we propose OCEAN, a novel cross-layer error mitigat ...

ACM2014

Accelerated Water Quality Improvement during Oligotrophication in Peri-Alpine Lakes

Alfred Johny Wüest, Beat Mueller

Monitoring of four eutrophic Swiss lakes undergoing oligotrophication during more than 25 years (i.e., gradually decreasing nutrient loading, productivity, and associated symptoms of eutrophication) revealed that phosphorus (P) net sedimentation rates (the ...

Amer Chemical Soc2014

Effects of oligotrophication on primary production in peri-alpine lakes

Alfred Johny Wüest

During the second half of the 20th century untreated sewage released from housing and industry into natural waters led to a degradation of many freshwater lakes and reservoirs worldwide. In order to mitigate eutrophication, wastewater treatment plants, inc ...

American Geophysical Union2013

Effects of upstream hydropower operation on riverine particle transport and turbidity in downstream lakes

Alfred Johny Wüest, Martin Schmid

[ 1] Retention in upstream storage dams results in modified riverine water and particle discharge patterns. Particularly, suspended solids input and intrusion dynamics in downstream lakes are affected by dam operations. In a case study, size-dependent part ...

Amer Geophysical Union2006

Antarctic climate during the middle Pliocene: model sensitivity to ice sheet variation

Jed Oliver Kaplan

Significant controversy exists surrounding the nature of the Antarctic ice sheet during the period of middle Pliocene warmth. This paper outlines the output from three sensitivity experiments for the middle Pliocene, using the UKMO GCM and the USGS PRISM2 ...

2002

The hydrogen isotope composition of seawater and the global water cycle

Philippe Gillet, François Robert

Long-term evolution of the Earth's water cycle is investigated to predict potential variations in the hydrogen stable isotope composition of seawater. Mass balance calculations are used to estimate the delta D value of the early ocean before storage of wat ...

1998

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