« BACK

Earth Sciences



Results 1 - 20 of 74.
1 2 3 4 Next »


Environment - Earth Sciences - 16.01.2020
Predicting hydraulic fracture propagation more accurately
Predicting hydraulic fracture propagation more accurately
Researchers at EPFL have developed a new model to calculate hydraulic fracture propagation. Acclaimed for its accuracy by experts, the model better predicts fracture geometry and the energy cost of hydraulic fracturing - a widely used technique in areas such as CO2 storage, hydrocarbon extraction, dams and volcano hazard monitoring.

Earth Sciences - 14.01.2020
No need to dig too deep to find gold!
No need to dig too deep to find gold!
A UNIGE researcher has discovered the particularities of porphyry copper and gold deposits, providing mining companies with a new tool to maximise the extraction of these two metals. Why are some porphyry deposits - formed by magmatic fluids in volcanic arcs - rich in copper while others primarily contain gold? In an attempt to answer this question, a researcher from the University of Geneva investigated how the metals are accumulated over the time duration of a mineralizing event, looking for a correlation between the amounts of copper and gold extracted from the deposits.

Environment - Earth Sciences - 09.01.2020
Improved Functioning of Diverse Landscape Mosaics
Improved Functioning of Diverse Landscape Mosaics
It is well-established that biodiverse ecosystems generally function better than monocultures. Ecologists at the University of Zurich have now shown that the same is true on a larger scale: Having a mix of different land-covers including grassland, forest, urban areas and water bodies improves the functioning and stability of a landscape - irrespective of the plant species diversity, region and climate.

Earth Sciences - Environment - 06.01.2020
Reducing human-induced earthquake risk
Reducing human-induced earthquake risk
Researchers at EPFL and the Swiss Federal Office of Energy have devised strategies for reducing the earthquake risk associated with geothermal energy, CO2 storage and other human activities happening deep underground. Although most earthquakes are attributable to natural causes, some are triggered - directly or indirectly - by human activity.

Earth Sciences - 20.12.2019
Why is the earth shaking in Ischia?
Why is the earth shaking in Ischia?
Italian and Geneva researchers unveil the cause of the often fatal earthquakes on the volcanic island of Ischia (Italy). Volcanic islands, such as Ischia in Italy, are often the scene of major natural disasters caused by earthquakes. But why is the earth shaking in Ischia? Researchers from the University of Geneva (UNIGE), Switzerland, the University of Roma Tre and the National Institute of Geophysics and Volcanology (INGV; Italy) have highlighted the phenomenon responsible for the periodic earthquakes that have struck the island of Ischia.

Environment - Earth Sciences - 12.12.2019
Ecotoxicological effects of pesticides in stream sediments
Ecotoxicological effects of pesticides in stream sediments
In small watercourses in Swiss agricultural catchments, pesticides pose an ecotoxicological risk. This was demonstrated by studies carried out in 2015 and 2017 under the National Surface Water Quality Monitoring Programme (NAWA SPEZ), where pesticide concentrations exceeded environmental quality standards for most of the study period.

Earth Sciences - Materials Science - 06.12.2019
Gaining insight into the energy balance of earthquakes
Gaining insight into the energy balance of earthquakes
Researchers at EPFL's Computational Solid Mechanics Laboratory and the Weizmann Institute of Science have modeled the onset of slip between two bodies in frictional contact. Their work, a major step forward in the study of frictional rupture, could give us a better understanding of earthquakes - including how far and fast they travel.

Earth Sciences - Physics - 20.11.2019
Stabilizing a cliff using biomineral binders
Stabilizing a cliff using biomineral binders
EPFL spin-off Medusoil has successfully tested its ground-stabilization process on cliffs subject to surface erosion. The company's biomineral-based solution can be used to stabilize sandy and gravelly subsoils to safeguard surrounding infrastructure. It is a long-lasting and easy-to-use alternative to industrial fluids - the production and use of which can be harmful to the environment.

Environment - Earth Sciences - 13.11.2019
Large storage potential in future ice-free glacier basins
Large storage potential in future ice-free glacier basins
Glaciologists at ETH Zurich and WSL assessed the global water storage and hydropower potential that could be freed up in future as glaciers melt in response to climate change. Global warming will cause substantial glacier retreat for the majority of the world's glaciers over the next few decades. This will not only spell the end for some magnificent natural monuments, but also importantly affect the water cycle.

Computer Science / Telecom - Earth Sciences - 08.11.2019
Using AI to predict where and when lightning will strike
Using AI to predict where and when lightning will strike
Researchers at EPFL have developed a novel way of predicting lightning strikes to the nearest 10 to 30 minutes and within a radius of 30 kilometers. The system uses a combination of standard data from weather stations and artificial intelligence. Lightning is one of the most unpredictable phenomena in nature.

Environment - Earth Sciences - 25.10.2019
Mountain streams emit a surprising amount of CO2
Mountain streams emit a surprising amount of CO2
For the first time, an EPFL-led team of scientists has measured the total amount of CO2 emissions from mountain streams worldwide. This research builds on findings issued in February 2019 and shows how important it is to include mountain streams in assessments of the global carbon cycle.  Mountains cover 25% of the Earth's surface, and the streams draining these mountains account for more than a third of the global runoff.

Earth Sciences - 14.10.2019
Clay minerals call the shots with carbon
Clay minerals call the shots with carbon
Clay minerals suspended in seawater binds sedimentary organic carbon to their mineral surfaces. But the quantity of carbon that is bound and the source of that carbon very much depends on the clay mineral in question. A research team from ETH Zurich and Tongji University have shown this by studying sediments in the South China Sea.

Earth Sciences - 09.10.2019
Was that the main quake?
So far it has not been possible to predict whether a strong quake will probably be followed by a stronger one or not. A new study by researchers from the Swiss Seismological Service at ETH Zurich gives rise to hopes of being able to make predictions in almost real time. Whereas most major earthquakes are not preceded by foreshocks, they are always followed by thousands of aftershocks, whose frequency and magnitude fade over time.

Environment - Earth Sciences - 12.09.2019
Gloomy forecast for the Aletsch Glacier
Gloomy forecast for the Aletsch Glacier
The largest glacier in the Alps is visibly suffering the effects of global warming. ETH researchers have now calculated how much of the Aletsch Glacier will still be visible by the end of the century. In the worst-case scenario, a couple patches of ice will be all that's left. Every year, it attracts thousands of visitors from around the world: as the largest ice flow in the Alps, the Great Aletsch Glacier is a major tourism draw in the Swiss region of Upper Valais, second only to the Matterhorn.

Astronomy / Space Science - Earth Sciences - 29.08.2019
Hints of a volcanically active exomoon
Hints of a volcanically active exomoon
A rocky extrasolar moon (exomoon) with bubbling lava may orbit a planet 550 light-years away from us. This is suggested by an international team of researchers led by the University of Bern on the basis of theoretical predictions matching observations. The "exo-Io" would appear to be an extreme version of Jupiter's moon Io.

Environment - Earth Sciences - 20.08.2019
Methods for reducing the risks of melting glaciers
Methods for reducing the risks of melting glaciers
Under a pilot project being spearheaded by the Swiss Agency for Development and Cooperation (SDC), a team of experts - including civil and environmental engineers from EPFL - are studying methods to help protect a region of the Andes Mountains threatened by glacial retreat. The testing phase of the pilot project will conclude at the end of the month.

Earth Sciences - Computer Science / Telecom - 13.08.2019
Monitoring the Matterhorn with millions of data points
Monitoring the Matterhorn with millions of data points
A unique project is linking in-situ measurements with natural hazards research. For the past ten years, a network of wireless sensors on the Matterhorn's Hörnli ridge has been constantly streaming measurement data on the condition of steep rock faces, permafrost and prevailing climate. The project leader, Jan Beutel, reviews progress to date.

Environment - Earth Sciences - 24.07.2019
Volcanoes shaped the climate before humankind
Volcanoes shaped the climate before humankind
Five large volcanic eruptions occurred in the early 19th century. They caused cooling and - as a study led by the University of Bern shows - to drying in the monsoon regions and glaciers growing in the Alps. The study shows that the pre-industrial climate was not constant: if one takes this cold period as the starting point for current global warming, the climate has already warmed up more than assumed in the current discussions.

Environment - Earth Sciences - 03.07.2019
Influence in absentia
Influence in absentia
The preferred food of pike in shallow lakes in Denmark and Sweden is roach. Seven in ten fish found by researchers in the stomachs of pike were roach - and the numbers tended to be even higher in wintertime. The roach that pike ate in lakes with tributary or outflowing rivers were, admittedly, smaller during the winter, and became somewhat thinner as winter went on.
1 2 3 4 Next »