Sentences with phrase «large volcanic event»

Any sediments left during a large volcanic event would therefore be expected to have unusually high mercury content.

Such eruptions, which expel enormous quantities of magma, are the largest volcanic events on earth.

Not exact matches

Here we are not dealing with large volcanic eruptions of the size of Pinatubo of Mount St. Helens, here we are talking about extreme events: The Toba caldera in the Sumatra subduction zone in Indonesia originated from one of the largest volcanic eruption in recent Earth history, about 74,000 years ago.

Infrasound signals can remain strong as they travel over large distances, making them useful for pinpointing the location and size of events such as nuclear explosions, meteorite strikes, volcanic eruptions and sometimes earthquake ruptures.

«There have been no large events at the Bardarbunga volcano since yesterday (Sunday) and there is no sign of volcanic tremors,» Gunnar Gudmundsson, geophysicist at the Icelandic Met Office said.

Giant lateral collapses are rather common events during the evolution of a large volcanic edifice, often with dramatic consequences such as tsunami and volcano explosions.

One example that I wasn't previously aware of, were the climate events of 536 AD — «dry fogs», crop failures, «dim suns» and yellow snow etc. — features consistent with a large volcanic eruption, possibly near the site of Krakatoa — and which correlates with evidence of a sulphate peak in the North GRIP ice core at the same time.

What is your level of confidence in the prediction made by GISS: «barring the unlikely event of a large volcanic eruption, a record global temperature clearly exceeding that of 2005 can be expected within the next 2 - 3 years.»

We are emitting carbon dioxide 10 times faster than one of the world's largest known volcanic eruptions (the Deccan Traps) that was implicated in the Cretaceous - Tertiary extinction event 65 million years ago.

(For those «coming in in the middle» — assuming any such are still reading — this subthread began with a link I provided discussing the vulnerability our complex society bears WRT to very large volcanic eruptions, in the context of the robustness of some Stone Age populations who «thrived» during the event — albeit at a considerable distance!)

I've sometimes thought that global cataclysms like the largest volcanic eruptions would disrupt the glacial records by many years, like Oruanui eruption c. 26500bp, as these would induce unrecorded behavior in weather and other things, f.e. the huge ash deposits might decrease the albedo so much a local melting event happens.

Andy, in order to have a «lost ring event», the volcanic eruption would likely need to be quite large (I would imagine being 6 or seven on the Volcanic explosive indvolcanic eruption would likely need to be quite large (I would imagine being 6 or seven on the Volcanic explosive indVolcanic explosive index VEI).

So, heat is released from volcanic activity, both from explosive larger events and more broad diffusive events, and in addition, from background geothermal heating.

One example that I wasn't previously aware of, were the climate events of 536 AD — «dry fogs», crop failures, «dim suns» and yellow snow etc. — features consistent with a large volcanic eruption, possibly near the site of Krakatoa — and which correlates with evidence of a sulphate peak in the North GRIP ice core at the same time.

Indeed, one complicating issue is that many volcanic eruptions are shortly followed by large El Nino events (e.g. Emile - Geay argue strongly for such a response to the AD 1258 eruption).

When we tried to reconstruct past climate patterns we learned that there was this interesting relationship between past very large volcanic eruptions and the timing of some of the large El Nino events in past centuries.

I chose the 1997/98 El Niño because that event wasn't opposed by a volcanic eruption and it was large enough to overwhelm the background noise.

There's very strong evidence for intense volcanic activity associated with the North Atlantic Igneous Province (yes yet another Large Igneous Province associated with a warming event) ocurring at exactly the time of the PETM, See:

Also Volcanic events prior to 1900 likely had a large impact on the accuracy of sun spot number count.

The iconic climate curve, a combination of observed land and ocean temperatures, has quite a few ups and downs, most of which climate scientists can easily associate with natural phenomena such as large volcanic eruptions or El Nino events.

I assumed that large volcano eruption certainly an peak event in terms of the global weather - so volcanic eruption has cause it snow in summer - big global weather change.

It is considered one of the largest known volcanic events on Earth and it happened deep in the midst of the continental plate of Pangaea, in a part that is now Siberia.

Two weeks ago we looked at the Triassic - Jurassic mass extinction, some 200 million years ago, that was caused by a large climatic warming event after the break - up of supercontinent Pangaea led to the release of enormous amounts of first [volcanic] CO2 and then methane [from disturbed clathrates — a positive warming feedback] into the atmosphere.

The secondary effects of all of the above are very likely to bring on the biggest Earth quakes and largest volcanic eruptions observed for 200 years, the trends of these events have been rising since the early 1990s.

We can see the temperature forcing of El Nino episodes driven by the surface cooling from large stratospheric volcanic events, and some research suggests that near permanent El Nino conditions existed during full glaciation ~ 20kyrs ago.

92) If one factors in non-greenhouse influences such as El Nino events and large volcanic eruptions, lower atmosphere satellite - based temperature measurements show little, if any, global warming since 1979, a period over which atmospheric CO2 has increased by 55 ppm (17 per cent).

How incredibly arrogant that so many believe humans are changing the climate when enormous volcanic events shaded the sun over large continents for years — spewing poisonous gases.

As it is now, temperature response to volcanic forcing leads events in some cases which is obviously wrong and volcanic (aerosols) forcing direct and indirect effects are the second largest source of model uncertainty.

Then throw in massive volcanic eruptions and huge continent wide brush fires caused by volcanoes or meteor showers (both theories I have seen in the literature) and you have many events that could cause climate disruption on a large scale.

Other factors that could adversely impact the correlation between the sun and temperature include time lags in the transposition of a climate impulse, or cooling events through sun - blocking aerosols from large volcanic eruptions.

We do not know enough to determine under what circumstance CO2 is a forcing or a feedback relative to temperature sometimes it maybe both sometimes over large areas it may even be a coolant e.g. if you think it is the main driver (which I don't) you would have to say it acted as a coolant for several thousand years from the Holocene climate optimum to the LIA — see Fig 6 in the last post at http://climatesense-norpag.blogspot.com I quoted the end Permian Siberian traps as a possible example of CO2 as a forcing but even here CO2 was rising rapidly before the volcanic event.