Sentences with phrase «more volcanic eruptions»

There is, so far as we know, no feedback mechanism of a dimmer stratosphere that causes more volcanic eruptions.

This «hiatus» is probably due to the cooling influences from natural radiative forcings (more volcanic eruptions and reducing output from the sun as part of the natural 11 - year solar cycle) and internal variability (fluctuations within the oceans unrelated to forcings).

The cause of this relatively short lived cooling (it was not a true «ice age») is not fully known, but the sun could have been cooler, there may have been more volcanic eruptions, there is a small but persistent cooling trend due to orbital cycles (as explained above).

McGuire conducted a study that was published in the journal Nature in 1997 that looked at the connection between the change in the rate of sea level rise and volcanic activity in the Mediterranean for the past 80,000 years and found that when sea level rose quickly, more volcanic eruptions occurred, increasing by a whopping 300 percent.

The cause of this relatively short lived cooling (it was not a true «ice age») is not fully known, but the sun could have been cooler, there may have been more volcanic eruptions, there is a small but persistent cooling trend due to orbital cycles (as explained above).

This makes the question «will a warmer climate and melting ice lead to more volcanic eruptions» harder to answer.

Rising sea levels caused by global warming could fuel more volcanic eruptions, possibly resulting in mass extinctions

Not exact matches

Some of the more extreme forecasts made for this time period include alien visitations / invasions, catastrophic asteroid impacts, violent volcanic eruptions and massive earthquakes.

Indeed, it now seems that major volcanic eruptions 4 billion years ago would have created an even more diverse atmosphere than Miller used, including carbon dioxide (CO2), nitrogen (N2), hydrogen sulfide (H2S), and sulfur dioxide (SO2).

You can not be serious... if you are of the school of thought that God created the Earth, then you have to believe that he created the cycles that keep the Earth sustainable and able to provide life... storms move moisture and heat across the earths surface and stabilize our atmosphere, earthquakes and volcanic eruptions recycle the rock and minerals on the planet and make more usable land and add richness to soils.

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.

Today, volcanoes rarely make the news in the United States, even though the western half of the country is dotted with volcanic systems that could unleash eruptions many times more powerful than the Mount St. Helens disaster.

Volcanic eruptions then began pumping steam and still more gas out of the young planet's interior.

«The volcanic eruption has now moved on to the next, more severe, magmatic eruption phase, where highly viscous lava can trap gases under pressure, potentially leading to an explosion,» says Mark Tingay, a geologist at the University of Adelaide in Australia.

Scientists are now watching to see whether the volcano repeats the violent eruptions of 1963, when superheated gases and volcanic material raced down the mountain in a series of pyroclastic flows, killing more than 1000 people.

Prior to an eruption, gases — water vapor, carbon dioxide, and sulfur dioxide — bubble out of the magma as it rises, adding more pressure to the volcanic system, she explains.

In addition to being able to measure the pH value more accurately using the new method, the CFA system can also distinguish whether the emissions come from volcanic eruptions, large forest fires or industry.

Scientists think that massive volcanic eruptions killed off more than 90 % of ocean species and 75 % of land species almost 252 million years ago.

Does one major volcanic eruption generate more climate - altering gas than that produced by humans in their entire history?

In 1815, the Indonesian volcano Tambora propelled more ash and volcanic gases into the atmosphere than any other eruption in history and resulted in significant atmospheric cooling on a global scale, much like Krakatau a few decades later.

Interestingly, some scientists argue that without the cooling effect of major volcanic eruptions such as El Chichn and Mount Pinatubo, global warming effects caused by human activities would have been far more substantial.

Ultimately, he found that, while volcanic eruptions would have spewed huge quantities of both sulfur dioxide and hydrogen sulfide into the atmosphere, it was the former that dissolved more easily in shallow waters, producing large concentrations of sulfidic anions, in the form of sulfites and bisulfites.

But those rulers may have had more to blame than just bad luck: According to a new study, volcanic eruptions around the ancient world likely suppressed the Nile's annual floods — critical for agriculture — by altering rainfall upriver in the Ethiopian highlands several times from the third to first centuries B.C.E..

Once the team discovered the link between volcanic eruptions and reduced Nile flooding, they turned their attention to more ancient times — specifically, to the period from 305 B.C.E. to 30 B.C.E., when Greeks ruled a dynasty centered in Egypt.

One is the Siberian Traps, a million - year - long volcanic eruption that flooded five time zones of Russia with basalt lava more than a mile deep.

For comparison: The Bárdabunga eruption blew out two cubic kilometers of volcanic material over the course of several months, nearly ten times more than the Eyjafjallajökull.

The team found that the eruption history of the Havre volcano was much more complicated than they previously thought, with the most recent eruption alone consisting of lava from 14 volcanic vent sites between 900 and 1220 meters (3000 and 4000 feet) below the surface.

Knowing both the physical location and the altitude distribution of aerosols in the volcanic cloud allow more accurate forecasts in the days, weeks and months after an eruption.

Professor Sybren said: «It can be excluded, however, that this hiatus period was solely caused by changes in atmospheric forcing, either due to volcanic eruptions, more aerosols emissions in Asia, or reduced greenhouse gas emissions.

These had been hinted at last year, when Alex Evans at the University of Arizona and colleagues used GRAIL maps to find evidence of more than 100 craters buried beneath seas of basalt formed by ancient volcanic eruptions.

During Mount Saint Helens's May 18, 1980, eruption, the top 1,300 feet of the volcano crumbled, initiating a steam - powered blast that tore off the peak's north flank and sent more than 5 billion cubic feet of volcanic mud flowing into nearby river channels.

One claim that I have come across frequently is that volcanic eruptions influence the climate much more than human activity.

Deccan volcanic eruptions spewed more than a million cubic kilometers (240,000 cubic miles) of molten rock and debris in what is now India.

Since 1950, the volcanic forcing has been negative due to a few significant eruptions, and has offset the modestly positive solar forcing, such that the net natural external forcing contribution to global warming over the past 50 years is approximately zero (more specifically, the authors estimate the natural forcing contribution since 1950 at -10 to +13 %, with a most likely value of 1 %).

Volcanic eruptions and impacts from celestial bodies, like asteroids, have a near instantaneous effect, but very few of these one - time events are of sufficient size to impact the global climate for more than a few years.

These gems, brought to the surface by volcanic eruptions, were uncovered in five ancient continents by researchers over the course of more than 30 years.

The team determined that the basalts from Baffin Island, formed by a 60 - million - year - old eruption from the mantle hot - spot currently located beneath Iceland, and the Ontong - Java Plateau, which was formed by an enormous volcanic event about 120 million years ago, contain slightly more tungsten - 182 than other young volcanic rocks.

Ian Plimer in another contrarian tome included some even more made up facts: «massive volcanic eruptions (e.g. Pinatubo) emit the equivalent of a years» human CO2 emissions in a few days» (p472) and «Volcanoes produce more CO2 then the world's cars and industries combined» (p413).

And the action continues to heat up with volcanic eruptions, earthquakes, phantom dinosaurs and more fantastic jungle menaces.

For more information, click the link to read our guide on the peril of volcanic eruption.

Volcanic eruption is potentially much more serious.

Remains of a 20 - million - year - old volcanic eruption offer shelter and food for more than 500 species of fish, making diving at Julian Rocks one of Byron Bay's biggest highlights.

Based on geological modelling, Syahbana explained, seismologists point to the possibility of Mount Agung erupting at VEI3, or a volcanic explosivity index of three, with an opening eruption height of more than six miles (10 km).

An estimated 59,000 travelers have been stranded in Bali by the eruption of Mount Agung, as a cloud of volcanic ash has interrupted flights.Despite... Read More

«The volcanic eruption has now moved on to the next, more severe, magmatic eruption phase, where highly viscous lava can trap gasses under pressure, potentially leading to an explosion,» Mark Tingay, a geologist at the University of Adelaide's Australian School of Petroleum, said in a statement Monday.

You can read more about people's direct experiences with the 1912 eruption in Witness: First Hand Accounts of the Largest Volcanic Eruption of the Twentieth eruption in Witness: First Hand Accounts of the Largest Volcanic Eruption of the Twentieth Eruption of the Twentieth Century.

The volcanic ash from the eruption has traveled to the east, causing the temporary closure of Lombok International Airport and cancellation of more than 5,000 flight seats, both domestic and international flights.

Based on volcanology data, the volcano's eruption was quite huge, with an amplitude level of 52 dB and a volcanic ash altitude of more than 2,000 meters above the crater,» said NTB Disaster Mitigation Agency (BPBD) head Muhammad Rum on Tuesday.

Read more: When the Bullin shrieked: Aboriginal memories of volcanic eruptions thousands of years ago

Read more: Ancient volcanic eruptions disrupted Earth's thermostat, creating a «Snowball» planet