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Results 1 - 17 of 17.


Environment - Earth Sciences - 12.12.2016
Atmospheric methane concentrations are rising faster since 2007
An international group of researchers led by LSCE (CEA-CNRS-UVSQ) has published a thorough budget of methane sources and sinks 1 over the last decade in the Earth System Science Data (ESSD) journal,

Earth Sciences - Physics - 28.11.2016
Marine sediments record variations in the Earth's magnetic field
Marine sediments record variations in the Earth’s magnetic field
Past variations in the strength of the Earth's magnetic field are reflected by the production of isotopes in the atmosphere.

Earth Sciences - Mathematics - 25.11.2016
Subduction zone geometry: a mega-earthquake risk indicator
Subduction zone geometry: a mega-earthquake risk indicator
Mega-earthquakes (with a magnitude greater than 8.5) mainly occur on subduction faults where one tectonic plate passes under another. But the probability of such earthquakes does not appear to be even across these zones. In a study published on 25 November 2016 in the journal Science , researchers from the University of Oregon and Géoazur laboratory (CNRS/Université Nice Sophia Antipolis/Observatoire de la Côte d'Azur/IRD) show that mega-earthquakes mostly occur on the flattest subduction zones.

Earth Sciences - Astronomy / Space Science - 18.11.2016
Chicxulub: a unique crater to elucidate planetary surfaces
Chicxulub: a unique crater to elucidate planetary surfaces
The fall of an asteroid in the Yucatán Peninsula (Mexico) 66 million years ago is believed to have caused the extinction of dinosaurs. It also created the Chicxulub impact crater, the only such crater on Earth that still has a peak ring – a type of structure commonly found, in contrast, on the surface of several objects in the Solar System.

Environment - Earth Sciences - 14.11.2016
Searching for the world's oldest ice
Searching for the world’s oldest ice
Why did the rhythm of glaciations suddenly slow down about a million years ago? To answer this question and to better forecast future climate change, a consortium of researchers from 14 institutions

Astronomy / Space Science - Earth Sciences - 18.10.2016
19 October 2016: Europe has a rendez-vous with Mars
19 October 2016: Europe has a rendez-vous with Mars
Released by the Trace Gas Orbiter (TGO) of the ESA ExoMars mission, the Schiaparelli module is about to land on the red planet this Wednesday, October 19th, 2016 at 4:48 p.m. (Paris time).

Earth Sciences - 03.10.2016
Slow slip events can trigger earthquakes
Slow slip events can trigger earthquakes
In subduction zones, where one tectonic plate slides beneath another, slow, imperceptible slip, known as 'slow earthquakes' or 'slow slip events', can trigger powerful quakes a little further away. This has just been shown by researchers from CNRS, Université Grenoble Alpes and IRD, in collaboration with colleagues at the National Autonomous University of Mexico.

Earth Sciences - Astronomy / Space Science - 19.09.2016
Shedding light on Pluto's glaciers
Shedding light on Pluto’s glaciers
What is the origin of the large heart-shaped nitrogen glacier revealed in 2015 on Pluto by the New Horizons spacecraft? Two researchers from the Laboratoire de météorologie dynamique (CNRS/École polytechnique/UPMC/ENS Paris) 1 show that Pluto's peculiar insolation and atmosphere favor nitrogen condensation near the equator, in the lower altitude regions, leading to an accumulation of ice at the bottom of Sputnik Planum, a vast topographic basin.

Earth Sciences - 08.07.2016
Earthquake prediction: an innovative technique for monitoring submarine faults
Earthquake prediction: an innovative technique for monitoring submarine faults
To monitor a segment of the North Anatolian seismic fault near Istanbul, an international team of researchers, in particular from CNRS and Université de Bretagne Occidentale, has installed a network of transponders on the floor of the Sea of Marmara. The aim is to measure motion of the sea floor on either side of this segment.

Astronomy / Space Science - Earth Sciences - 21.06.2016
An ocean lies a few kilometers beneath Enceladus's icy surface
An ocean lies a few kilometers beneath Enceladus’s icy surface
With eruptions of ice and water vapor, and an ocean covered by an ice shell, Saturn's moon Enceladus is one of the most fascinating in the Solar System, especially as interpretations of data provided by the Cassini spacecraft have been contradictory until now.

History / Archeology - Earth Sciences - 20.05.2016
Lead pollution reveals the ancient history of Naples
Lead pollution reveals the ancient history of Naples
View of the eruption of Vesuvius in 79 AD, from the bay of Naples, as imagined by the artist William Turner between 1817 and 1820 . Yale Center for British Art, Collection Paul Mellon. Almost two thousand years after the eruption of Vesuvius that destroyed Pompeii and Herculaneum, certain periods of the history of Naples have just been reconstructed.

Earth Sciences - History / Archeology - 16.05.2016
Lead pollution reveals the ancient history of Naples
Lead pollution reveals the ancient history of Naples
Almost two thousand years after the eruption of Vesuvius that destroyed Pompeii and Herculaneum, certain periods of the history of Naples have just been reconstructed. Until now, historians and archaeologists had wondered about the impact of this volcanic eruption on the Aqua Augusta aqueduct which supplied Naples and neighboring cities with water.

Astronomy / Space Science - Earth Sciences - 02.05.2016
Although boiling, water does shape Martian terrain
Although boiling, water does shape Martian terrain
At present, liquid water on Mars only exists in small quantities as a boiling liquid, and only during the warmest time of day in summer. Its role has therefore been considered insignificant until now.

Earth Sciences - Life Sciences - 21.04.2016
Giant plankton gains long-due attention
Giant plankton gains long-due attention
A team of marine biologists and oceanographers from CNRS, UPMC 1 and the German organization GEOMAR have revealed the importance in all the world's oceans of a group of large planktonic organisms called Rhizaria , which had previously been completely underestimated.

Astronomy / Space Science - Earth Sciences - 31.03.2016
The Moon thought to play a major role in maintaining Earth's magnetic field
The Moon thought to play a major role in maintaining Earth’s magnetic field
The Earth's magnetic field permanently protects us from the charged particles and radiation that originate in the Sun. This shield is produced by the geodynamo, the rapid motion of huge quantities of liquid iron alloy in the Earth's outer core. To maintain this magnetic field until the present day, the classical model required the Earth's core to have cooled by around 3 000 °C over the past 4.3 billion years.

Astronomy / Space Science - Earth Sciences - 02.03.2016
Great tilt gave Mars a new face
Great tilt gave Mars a new face
The surface of the planet Mars tilted by 20 to 25 degrees 3 to 3.5 billion years ago. This was caused by a massive volcanic structure, the Tharsis volcanic dome 1 , which is the largest in the Solar System.

Life Sciences - Earth Sciences - 10.02.2016
Plankton network linked to ocean's biological carbon pump revealed
Plankton network linked to ocean’s biological carbon pump revealed
The ocean is the largest carbon sink on the planet. The community of planktonic organisms involved in the removal of carbon from the upper layers of the ocean has now been described by an interdisciplinary team bringing together oceanographers, biologists and computer scientists, principally from the CNRS, UPMC, Nantes University, VIB, EMBL and CEA.

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