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Earth Sciences - Environment - 07.11.2018
Launch of the European Plate Observing System (EPOS) : Earth System Science enters the Big Data era
Wednesday 7 November 2018 officially launches the European Plate Observing System (EPOS) for the pooling and streamlining of data and services of all kinds for the study of our planet. This initiative, for which the CNRS and BRGM are working together with the French Ministry for Higher Education, Research and Innovation, in part aims to better understand the mechanisms behind earthquakes and volcanic eruptions.

Earth Sciences - Environment - 11.04.2018
The dinosaur menu, as revealed by calcium
The dinosaur menu, as revealed by calcium
By studying calcium in fossil remains in deposits in Morocco and Niger, researchers have been able to reconstruct the food chains of the past, thus explaining how so many predators could coexist in the dinosaurs' time.

Earth Sciences - Environment - 04.04.2018
The great acceleration reaches new heights
The great acceleration reaches new heights
An international team of researchers 1 , including a CNRS researcher at the department of Écologie et Dynamique des Systèmes Anthropisés (CNRS / Université de Picardie Jules Verne) has observed an acceleration in the increase of biodiversity on mountain peaks in Europe.

Earth Sciences - History / Archeology - 01.12.2017
Bronze Age artifacts used meteoric iron
You may already be surprised to hear there are iron objects dating back to the Bronze Age, but their meteorite origin is even more astonishing. Though meteorites had already been recognized as one source of this metal, the scientific community couldn't determine whether they accounted for most or simply a few Bronze Age iron artifacts.

Earth Sciences - Astronomy / Space Science - 30.11.2017
New early signals to quantify the magnitude of strong earthquakes
After an earthquake, there is a disturbance in the field of gravity almost instantaneously. This could be recorded before the seismic waves that seismologists usually analyze. In a study published in Science on December 1, 2017, a team formed of researchers from CNRS, IPGP, the Université Paris Diderot 1 and Caltech has managed to observe these weak signals related to gravity and to understand where they come from.

Earth Sciences - Life Sciences - 13.11.2017
World's longest sauropod dinosaur trackway brought to light
World’s longest sauropod dinosaur trackway brought to light
In 2009, the world's largest dinosaur tracks were discovered in the French village of Plagne, in the Jura Mountains. Since then, a series of excavations at the site has uncovered other tracks, sprawling over more than 150 meters. They form the longest sauropod trackway ever to be found.

Earth Sciences - Event - 05.10.2017

Environment - Earth Sciences - 28.08.2017
CO2 and temperature decoupling at the million-year scale during the Cretaceous Greenhouse
CO2 and temperature decoupling at the million-year scale during the Cretaceous Greenhouse
Optical microscopic view of a cuticle of the Frenelopsis fossil conifer used to reconstruct the atmospheric CO2 concentration in the Cretaceous.

Earth Sciences - Life Sciences - 28.06.2017
Brooding dinosaurs
Brooding dinosaurs
A new method used to perform geochemical analysis of fossilized eggs from China has shown that oviraptorosaurs incubated their eggs with their bodies within a 35–40° C range, similar to extant birds today. This finding is the result of Franco-Chinese collaboration coordinated by Romain Amiot of the Laboratoire de géologie de Lyon: Terre, planètes et environnement (CNRS/ENS de Lyon/Université Claude Bernard Lyon 1).

Environment - Earth Sciences - 19.06.2017
Subtropical climate conditions and mangrove growth in Arctic Siberia during the early Eocene
Subtropical climate conditions and mangrove growth in Arctic Siberia during the early Eocene
Abstract The early Eocene (ca. 56'47.8 Ma) was an interval of exceptional warmth with reduced pole-to-equator temperature gradients. Climate proxies indicate mean annual air temperatures (MATs) and sea-surface temperatures (SSTs) exceeding 8'18 °C and frost-free, mild winters in polar areas, features that have proven difficult to reproduce with the most elaborate climate models.

Life Sciences - Earth Sciences - 07.06.2017
The secrets of tooth calcium revealed
The secrets of tooth calcium revealed
Two studies on calcium isotopes 1 in teeth have provided new insights into both the extinction of the dinosaurs and weaning age in humans. The findings of these studies, conducted by CNRS researchers at Lyon ENS and Université Claude Bernard Lyon 1, were published, respectively, on 25 and 30 May 2017 in Current Biology and PNAS .

Astronomy / Space Science - Earth Sciences - 22.02.2017
An exceptional system of exoplanets
An exceptional system of exoplanets
Seven temperate Earth-sized planets revolve around the star TRAPPIST-1. In addition, at least three of them harbor conditions compatible with the presence of liquid water on their surfaces.

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.

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