Sentences with phrase «as volcanic eruptions in»

A new study shows the chemical register of climate change and global episodes such as volcanic eruptions in high - mountain centennial forests in the Iberian Peninsula (Spain).

Not exact matches

Unrest at large calderas rarely ends in eruption, encouraging vulnerable communities to perceive emergency warnings of volcanic activity as false alarms.

Some don't get to even take the test as babies sometimes get cancer, or die in earthquakes and volcanic eruptions.

It is entirely likely that causes such as fluctuations in the sun's intensity and volcanic eruptions may have contributed to a change in the global atmospheric temperature.

The first 110,000 annual layers of snow in that ice core (GISP2) have been visually counted and corroborated by two to three different and independent methods as well as by correlation with volcanic eruptions and other datable events.

Besides knowing a lot more about the transport of volcanic aerosols in the atmosphere, modern researchers had communications lines and satellites so that news of an eruption could be relayed quickly and the effects noted as they unfolded.

The extinction at the end of the Permian is thought to have been caused by volcanic eruptions in Siberia over hundreds of thousands if not a million years that produced what are known today as the Siberian Traps: lava fields covering much of northern Russia and originally encompassing nearly 3 million square miles with an average thickness of about 1,000 feet.

THE wildfires that raged in western North America last August were so ferocious that they had the same effect on the planet as a volcanic eruption.

For example, Central Anatolia is described as an elevated, dry, cold plain of Lycaonia in Strabo's Geographika in 7 BC, and even cave paintings in the region dating to approximately 7000 BC record active volcanic eruptions on the plateau.»

There have been plenty of smaller volcanic eruptions in recent years, such as the continuously erupting Soufriere Hills on Montserrat and Tavurvur on Papua New Guinea, which may have exploded enough SO2 into the atmosphere.

They can be as small as a grain of salt, but tiny crystals that form deep in volcanoes may be the key for advance warnings before volcanic eruptions.

The spatial deposition of sulfur particles in the bipolar ice cores, as calculated in the model, agrees well with the actually measured deposits of large volcanic eruptions, such as Pinatubo in 1991 or even of Tambora of 1815.

Dr Ubide said it was currently very difficult to predict volcanic eruptions — as evidenced by the eruption at Mount Agung in Bali, which started last November after 2 months of precursory earthquakes.

Air bubbles collect and explode at the surface of many viscous liquids, as observed with polymer foams, in glass furnaces, and during volcanic eruptions.

When scientists use climate models for attribution studies, they first run simulations with estimates of only «natural» climate influences over the past 100 years, such as changes in solar output and major volcanic eruptions.

After large volcanic eruptions that pump sulphur dioxide into the atmosphere, such as that of mount Pinatubo in the Philippines in 1991, the planet cools for a year or two.

Weiss» team found that the rock conglomerate the zircon crystals were in had been magnetized just 1 billion years ago, when it probably formed as part of a volcanic eruption nearby.

Their study also did not incorporate other important predictors for volcanic eruptions such as earthquakes and gas output — although the researchers plan to include these measurements in future studies.

«Improving how we anticipate activity using new technology such as this is an important first step in doing better at forecasting and preparing for volcanic eruptions,» said STREVA Principal Investigator, Dr Jenni Barclay.

Any volcano on land which was as lively as KeJ would be constantly monitored by satellites and an array of local instruments looking for the slightest change in behaviour that could precede a major volcanic eruption.

Using an interdisciplinary approach that combined evidence from climate modelling of large 20th - century eruptions, annual measurements of Nile summer flood heights from the Islamic Nilometer — the longest - known human record of environmental variability — between 622 and 1902, as well as descriptions of Nile flood quality in ancient papyri and inscriptions from the Ptolemaic era, the authors show how large volcanic eruptions impacted on Nile river flow, reducing the height of the agriculturally - critical summer flood.

The team of researchers examined the hydroclimatic and societal impacts in Egypt of a sequence of tropical and high - latitude volcanic eruptions spanning the past 2,500 years, as known from modern ice - core records.

The material, they believe, was recycled as older volcanic rocks forming the roofs of magma chambers collapsed and remelted during eruptions, only to be reejected in the next volcanic outburst.

Meanwhile, hydrogen sulfide, which would have been released in huge amounts by volcanic eruptions, would have mostly stayed in the atmosphere, as the molecule is relatively insoluble in water, and therefore would not have had regular opportunities to interact with hydrogen cyanide.

Their findings: natural influences such as changes in the amount of sunlight or volcanic eruptions did not explain the warming trends, but the results matched when increasing levels of greenhouse gas emissions were added to the mix.

These datasets will be used to improve strategic and hazard - warning capabilities of events in near real - time, such as tracking plumes from dust storms, volcanic eruptions, and wildfires.

Acid rain following the impact may also have played a role in the extinction, as could the additional stress on global climate from the massive volcanic eruptions that occurred 65 million years ago in India's Deccan Traps.

Some geologists speculate that massive volcanic eruptions covering areas as large as modern continents triggered the release of methane buried in the ocean floor, causing a greenhouse effect.

The height of exploration may have occurred at the peak of cooling: Starting in the late 16th century, a series of volcanic eruptions likely chilled the Northern Hemisphere by as much as 1.8 degrees Celsius below the long - term average, White says.

In June, scientists at the National Oceanic and Atmospheric Administration announced that they had finally found the cause of the hiatus, and it wasn't shifting winds or pint - size volcanic eruptions as some scientists proposed.

But in a new study researchers have shown conclusively that a new form of low - energy lightning is also active during eruptions, arcing between particles as they exit the volcanic vent at around 100 metres per second.

The human impact on climate during this era greatly exceeds that due to known changes in natural processes, such as solar changes and volcanic eruptions.»

Faux's paper on opisthotonos, published in March, rethinks dinosaurs not just as having died for reasons other than meteor impacts and volcanic eruptions but also advances the argument that these creatures may have had hot blood pumping through their veins.

Hiatuses can also be triggered by volcanic eruptions that eject particles into the air, reflecting sunlight away from Earth, as happened after the eruption of Mount Pinatubo in 1991.

Glinting silver - gray in rocks and soils, it mixes with other minerals as it seeps into water supplies, drifts on the dusty plumes of volcanic eruptions and travels on the wind.

The wildfires that raged in northwest America last August were so ferocious that they had the same effect on the planet as a volcanic eruption.

The researchers warn, however, that the future evolution of the AMO remains uncertain, with many factors potentially affecting how it interacts with atmospheric circulation patterns, such as Arctic sea ice loss, changes in solar radiation, volcanic eruptions and concentrations of greenhouse gases in the atmosphere.

The scientists studied works painted around the times of major volcanic eruptions, such as the cataclysmic explosion of Mount Krakatoa in 1883, to measure how much pollution was pumped into the skies.

The record - breaking 2017 wildfires in the US generated massive thunderstorms that pumped as much smoke into the stratosphere as a volcanic eruption

Atmospheric changes that caused volcanic eruptions centuries ago, such as the one in Timanfaya or the Tambora volcano (Indonesia)- which hid the sunlight for months -, had an impact on high - mountain centennial forests in the Iberian Peninsula, as stated in an article published in the journal Science of the Total Environment in which the lecturer Emilia Gutiérrez, from the Faculty of Biology of the University of Barcelona, has taken part.

The models, which factor in natural effects such as solar winds and volcanic eruptions, along with anthropogenic forcings like greenhouse gases and aerosols, match these precipitation variations accurately in trend and reasonably well in magnitude.

Brought to Earth's surface in eruptions of deep volcanic material, these rocks hold clues as to what is going on deep beneath Earth's surface.

The technique they developed makes it possible to refine predictions of future volcanic eruptions as well as identifying areas of the planet that are rich in magma - related natural resources.

So the report notes that the current «pause» in new global average temperature records since 1998 — a year that saw the second strongest El Nino on record and shattered warming records — does not reflect the long - term trend and may be explained by the oceans absorbing the majority of the extra heat trapped by greenhouse gases as well as the cooling contributions of volcanic eruptions.

It is anticipated that the computational approach developed in this study can also provide important insights on the role of magma degassing as a potential trigger for volcanic eruptions.

In Jeju, Korea, a place emerging as a world - famous vacation spot with natural tourism resources, a recent study revealed a volcanic eruption occurred on the island.

Zircons are only formed in particular volcanic eruptions that are triggered when continental masses crash into each other, so they act as a record of past continental collisions.

I won't argue that our added gases may contribute to the warming to some very, very small degree, but keep in mind, the ash plume from a good volcanic eruption such as the last big Pinatubo eruption eclipses into insignificants the amount of pollutants added to the atmosphere by human activity.

The final phase of testing will be to fly the Airbus A340 aircraft during a major volcanic eruption later this year - volcanic activity is likely to take place in areas such as Indonesia, Alaska, Japan and, of course, Iceland.

Perhaps in the future a large volcanic eruption (VEI 5 - 6 or greater) may cause 1 - 2 °C swings in global temperatures as they rise further as we go from enhanced greenhouse effect to enhanced reductions in insolation from thicker sulfuric acid vails.