Greenland time volcanic eruptions. Medical search. Frequent questions

Many of these were larger than any eruption over the last 2,500 years," said Anders Svensson of the University of Copenhagen 's Niels Bohr Institute. (naturalnews.com)
Estimates of volcanic eruptions more than 2,500 years ago have been linked with great doubt and a lack of accuracy up to now. (naturalnews.com)

Researchers from an expedition to the Gakkel Ridge, led by the American Woods Hole Oceanographic Institution (WHOI), report in the current issue of the journal Nature that they discovered, with a specially developed camera, extensive layers of volcanic ash on the seafloor, which indicates a gigantic volcanic eruption. (ipy.org)
In the Northern Hemisphere, sub-visible layers of volcanic ash (cryptotephra) are valuable time markers due to their widespread dispersal and unique geochemical fingerprints. (nature.com)

Students examine the seasonal/annual nitrate record and use information from known volcanic eruptions to date the unique signature of the Icelandic volcanoes. (nasa.gov)
Although previous researchers have recorded the sounds icebergs make when calving or running aground, this is most likely the first time anyone's reported the sounds of an iceberg breaking up over open water, said study leader Bob Dziak , a geophysicist studying earthquakes and volcanoes at Oregon State University and the U.S. National Oceanic and Atmospheric Administration. (nationalgeographic.com)

To reconstruct ancient volcanic eruptions, ice cores offer a few advantages over other methods. (naturalnews.com)
Atmospheric chemists from the Tokyo Institute of Technology and the University of Copenhagen say that patterns of isotopes found in ancient volcanic sulfur trapped in ice cores, and patterns due to stratospheric photochemistry, are a way to say for sure which historic episodes of global cooling were caused by volcanic eruptions. (science20.com)

Ice cores drilled in Antarctica and Greenland have shown colossal volcanic eruptions during the Ice Age, with many of them bigger than any eruption in modern history. (naturalnews.com)
Svensson and his fellow researchers managed to evaluate the quantity and intensity of volcanic eruptions over the last 60,000 years by analyzing ice cores drilled in Antarctica and Greenland. (naturalnews.com)
Whenever a really large eruption occurs, sulfuric acid is ejected into the upper atmosphere, which is then distributed globally - including onto Greenland and Antarctica. (naturalnews.com)
In a prior study, the researchers managed to coordinate ice cores from Antarctica and Greenland to date the respective core layers on the same time scale. (naturalnews.com)
Tracking climate history is performed on cores drilled from the ice shields of Greenland and Antarctica. (science20.com)
Furthermore, by subtracting the theoretically expected GCR-induced signal, we investigate the high-frequency variability in the 10Be records from Greenland and Antarctica after 1951gCE, focusing on SEP events and volcanic eruptions. (lu.se)
Finally, we use the 10Be records from Greenland and Antarctica to study the 11-year solar cycles, allowing us to assess the suitability of the CFA samples for the reconstruction of solar activity. (lu.se)
People who study such things confirm that a sulfuric fall-out appears in ice cores, drilled from the ice sheets in both Greenland and Antarctica, suggesting that a major volcanic eruption occurred at about this time in history. (tripod.com)
Sulfur deposits in ice cores are the usual signal of volcanic activity , and ice cores from Antarctica and Greenland narrowed the timing of the Taupō eruption to around 230 CE, give or take a few decades. (sciencenewslab.com)
As occurred after identification of the Alaskan White River Ash in northern Europe, recognition of ash from the Oruanui eruption in Antarctica dramatically increases the reach and value of tephrochronology, providing links among climate records in widely different geographic areas and depositional environments. (nature.com)
Furthermore, we are involved in major ice core projects in Greenland and Antarctica aiming to improve the dating of the deepest ice with radionuclide studies (10Be/36Cl dating) and in the international effort to improve the 14C calibration curve (INTCAL project). (lu.se)

And people may now be wondering when the next of these gigantic eruptions will happen. (naturalnews.com)
When the crust deforms on this scale it causes prolonged megaquakes, tsunamis of gigantic size, and massive volcanic eruptions. (mariobuildreps.com)

Ice cores contain information about temperatures before and after the eruptions, which allows us to calculate the effect on climate. (naturalnews.com)
Unlike ice cores taken from the Greenland ice sheet hundreds of miles inland, the new lake core measurements reflect air temperatures where the Vikings lived, as well as those experienced by the Saqqaq and the Dorset, Stone Age cultures that preceded them. (wattsupwiththat.com)
Long-lived bristlecone pines in the White Mountains of California, also show signs of very rare frost damage from that time, indicating below-freezing temperatures in September of 43 BCE. (syfy.com)
A) Temperature anomalies (deviations from average) for Roman provinces north (red) and south (orange) forced by volcanic eruptions, and B) temperatures based on atmospheric models including volcanic eruptions. (syfy.com)
But consider that in 1900, with centuries of solar minima and large-scale volcanic eruptions leading to plummeting Little Ice Age temperatures, the Greenland Ice Sheet had accumulated more ice and expanded its margins more than at any time in the last 7,500 years. (notrickszone.com)
Temperatures at 10 meters depth at 6 sites in Greenland were also determined and show a significant warming since the 1990's of 0.9 to 2.5 °C. (copernicus.org)
Icelandic eruptions around 540-541 AD also lowered summer temperatures by 1.4 to 2.7°C in Europe. (apreat.ovh)
Volcanic eruptions, changes in the Sun's radiative output, and the mostly anthropogenic changes in greenhouse gases, tropospheric aerosols, and land use are the main climate forcings for surface temperatures over the last 2,000 years. (nationalacademies.org)

Using ice cores from Greenland and the Russian arctic, combined with temperature proxies and dates of historic events from the time, they conclude the volcano started a massive series of eruptions that lasted up to two years . (syfy.com)
Volcanic material that gets that high has global effects, again supporting the idea this came from a distant volcano. (syfy.com)
Confusing things a bit was a minor eruption from the local volcano Etna in 44 BCE. (syfy.com)
Predicting Volcano Eruptions from…the greenness of trees? (sdakotabirds.com)
Keyes suggests a very large volcanic eruption, something even larger than the great blast of Krakatoa that sunk ships and killed civilians caught within many miles of the volcano in 1883. (tripod.com)
A seventh shard, formed from an earlier eruption of the same volcano, helped the team pinpoint their exact origins, and helped confirm the timing of the explosive event. (sciencenewslab.com)
The Taupō volcano has been active for about 300,000 years, but the timing of its most recent major eruption - one of the largest and most energetic eruptions on Earth in the past 5,000 years - has been surprisingly hard to pin down. (sciencenewslab.com)
Fruits and seeds on those preserved trees, and their lack of darker, outer latewood, suggested the volcano blew its top in late summer or autumn, but the year of the eruption was still disputed. (sciencenewslab.com)
One shard in particular stood out: it was a match for volcanic glass produced by the earlier Ōruanui supereruption of the Taupō volcano, which occurred 25,600 years ago. (sciencenewslab.com)
The Ōruanui glass, being centuries older but made of the same material, was likely unearthed from the Taupō volcano and expelled into the stratosphere along with the newly formed glass shards of the 230 CE eruption. (sciencenewslab.com)

Sulfur dioxide emitted during volcanic eruptions, and introduced into the stratosphere, converts to sulfate aerosol, which can produce short-lived global cooling 6 . (nature.com)
In a related paper, Sigl and others 8 integrated the excellent sulfur record provided by the WDC06A ice core with those from other Antarctic ice cores to more accurately estimate volcanic sulfate loading during the Common Era. (nature.com)
Stable isotope ratios of water reveal nuances in temperature through the years and sharp peaks in sulfate have even been used to accurately date volcanic eruptions. (scicoll.org)
Understanding the far-field societal impacts of eruption-forced climatic changes requires firm event chronologies and reliable estimates of both the burden and altitude (that is, tropospheric versus stratospheric) of volcanic sulfate aerosol2,3. (bvsalud.org)

A smaller and more common one exploded over the Tunguska River in the Siberian wilderness 91 years ago with 2,000 times the power of the bomb that devastated Hiroshima in 1945. (freerepublic.com)
For the last 2,000 years, the dominant forcings have been the natural changes in solar irradiance and volcanic eruptions, along with the more recent anthropogenic influences from greenhouse gases, tropospheric aerosols, and land use changes. (nationalacademies.org)

Less powerful eruptions can also have powerful impacts, but only locally, and for shorter times. (science20.com)
The astrophysicist then noted based on the probability of a single impact it is virtually impossible for there to be multiple impacts (eight or nine) in such a short time period. (physicsforums.com)
These volcanic eruptions were coincidental with extraterrestrial impacts in March 536 AD in the Gulf of Carpentaria and elsewhere in August 536 AD. (apreat.ovh)
How will the climate moaners survive the next Grand Solar Minimum (2020 to 2053) if there are coincidental natural events such as large volcanic eruptions and small extraterrestrial impacts? (apreat.ovh)

By doing this, they were able to compare sulfur residues in ice and understand when sulfuric acid spread to both poles after worldwide important eruptions. (naturalnews.com)
With the sulfur isotope method, we now have a way to prove whether a given eruption was so explosive that it entered the stratosphere, affecting global climate and civilizations, or, whether a given eruption was confined to the troposphere and local in its effects" says Johnson. (science20.com)
One of the exciting new datasets provided by the WDC06A ice core is the sulfur-based record of volcanism, supplemented by electrical conductivity and particle counter measurements, which, when integrated with a Greenland ice record, provide insight into volcanic forcing of climate fluctuations 7 . (nature.com)
Five further eruptions, including one responsible for high sulfur deposition over Greenland circa 1182 CE, affected only the troposphere and had muted climatic consequences. (bvsalud.org)

The worst years to live since the time of Jesus were 535-550 AD because massive volcanic eruptions, perhaps Kamchatka or Alaska in 535-536 AD and Ilopango in El Salvador from 539-540 AD. (apreat.ovh)
Since my first visit in 1996, when we hiked from the Mutnovsky down to the village Ozernovsky in the south, I've come to Kamchatka three more times. (lkirchner.de)

This investigation is based on the GISP2 H-core data collected in 1992 adjacent to the GISP2 Greenland summit drill site. (nasa.gov)
Bits of wood stuck onto pumice discovered in the GISP2 Greenland ice core came from numerous volcanic eruptions at Rabaul (Papua New Guinea) around 667 to 699 AD which led to another few bleak years. (apreat.ovh)

Explosive volcanic eruptions are possible deep down in the sea - although the water masses exert enormous pressure there. (savethehighseas.org)
An international team of researchers was able to provide evidence of explosive volcanism in the deeps of the ice-covered Arctic Ocean for the first time. (ipy.org)
In this episode of NOVA scienceNOW, journey back in time to the birth of our solar system to examine whether the key to our planet's existence might have been the explosive shockwave of an ancient supernova. (ihavenotv.com)
Here we shed new light on explosive volcanism during the HMP, drawing on analysis of contemporary reports of total lunar eclipses, from which we derive a time series of stratospheric turbidity. (bvsalud.org)

We can estimate the size of an eruption by looking at the amount of sulfuric acid that has fallen," Svensson explained. (naturalnews.com)
Tambora-sized eruptions appear to erupt once or twice every thousand years, so the wait for that may be shorter," said Svensson. (naturalnews.com)
As large eruptions tell us a lot about how sensitive our planet is to changes in the climate system, they can be useful for climate predictions," Svensson explained. (naturalnews.com)

The researchers were able to identify 85 of the volcanic eruptions as large global eruptions with 69 of them estimated to be bigger than the 1815 eruption of Mount Tambora in Indonesia , the largest volcanic eruption in recorded human history. (naturalnews.com)
Some line of evidence point towards the cold winters being caused not by the low activity of the Sun, but rather by concomitant massive volcanic eruptions in Indonesia and Vanuatu , releasing vast amount of ashes and sulfuric acid particles in the atmosphere, blocking the Sun and cooling the Earth. (ornitorinko.org)

Such solar activity tends to lead to high atmospheric pressure over Greenland. (sciencedaily.com)
This time was characterized by bitter winters in northern Europe, and is roughly coincident with a period of low solar activity, which is called Maunder Minimum . (ornitorinko.org)
Using these data we can evaluate model variability in space and time, as well as attribute variations in climate and weather to climate forcings, for example, major volcanic eruptions or variations in solar activity. (lu.se)

Over the 54 million years since the last flows erupted, plate tectonics has slowly moved the Faroe Islands away from the active volcanic region, which today is concentrated in Iceland and along the Mid-Atlantic Ridge. (wikipedia.org)
There's debate over whether there was an eruption on Iceland in 527, or 535, or 541. (science20.com)
Embark on an epic expedition cruise to explore the majestic wild landscapes of Iceland and east-coast Greenland - two northern lands straight out of the old sagas. (hurtigruten.com)
Iceland basically is a vulcanic eruption that popped it's head above the surface of the ocean about 50k years ago. (exploremore.eu)

For most people, the mention of a volcanic eruption evokes doomsday story lines that include roaring explosions, dark ash puffing up into the stratosphere and gooey lava covering everything in its way as terrified humans run for their lives. (naturalnews.com)
The Tambora eruption discharged so many sulfuric acid into the stratosphere that it blocked sunlight and caused global cooling in the following years. (naturalnews.com)
Using our method we can determine whether a given eruption was powerful enough for the plume to enter the stratosphere affecting global climate. (science20.com)
His book suggests that a major cataclysmic event, such as a powerful volcanic eruption or a meteor strike that sent enough dust and ash into the stratosphere to dim the sunlight for several years, might have turned human history into a form of chaos. (tripod.com)
This famous eruption between the islands of Sumatra and Java send ash and smoke into the stratosphere that, indeed, dimmed the light and brought brilliant sunsets all over the world for months. (tripod.com)

For this reason, there is a great deal of interest in mapping the significant eruptions of the past since they can assist scientists to look into the future. (naturalnews.com)
What climate scientists have been able to ascertain is that an extended cold snap, called the Little Ice Age, gripped Greenland beginning in the 1400s. (wattsupwiththat.com)
The Saqqaq arrived in Greenland around 2500 B.C. While there were warm and cold swings in temperature for centuries after their arrival, the climate took a turn for the bitter beginning roughly 850 B.C., the scientists found. (wattsupwiththat.com)
Fifteen international scientists recently collaborated to assemble one of the most comprehensive analyses of temperature and ice sheet changes for Greenland and the Canadian Arctic ever produced. (notrickszone.com)
Interwoven with this story are interviews with some of the most famous climate scientists of our time including James Hansen and Richard Lindzen. (jennifermarohasy.com)
In the depths of the water just west of Greenland, scientists have discovered a previously unknown coral garden. (savethehighseas.org)
Now scientists are searching for clues to understand what made La Palma's first eruption in 50 years so powerful. (nationalgeographic.com)
Climate scientists from the Alfred Wegener Institute present their own prognosis for the first time Bremerhaven, July 7, 2008. (ipy.org)
Join scientists on the most ambitious Arctic research expedition of all time. (ihavenotv.com)
Ruddiman and his team are part of a larger group of scientists who examine ice core records and other deep-time environmental samples to study the world before and during human activity. (scicoll.org)

Because large eruptions are relatively rare, a long timeline is needed to know when they occur. (naturalnews.com)
Some eruptions were violent and produced large volumes of volcanic ash that can be found in between the lava flows. (wikipedia.org)
While the accelerating mass loss from Greenland is of course a concern, the large exaggeration of that loss rate by Harper Collins in the press release for the 2011 edition of the Times Atlas was of course completely wrong. (realclimate.org)
A mass extinction or extinction event is the phenomenon in which a large number of species of life on Earth become extinct in a relatively short period of time. (newworldencyclopedia.org)
At the time of the Triassic - Jurassic transition, about 20 percent of all marine families as well as most non-dinosaurian archosaurs, most therapsids (except the order from which mammals descended), and the last of the large amphibians were eliminated. (newworldencyclopedia.org)
The event was believed to have been caused by an extensive dust veil, while the observed episode was explained using several hypotheses including a large volcanic eruption in the tropics and debris from comet impact. (zetatalk3.com)
The 'ocean conveyor belt' - thermohaline circulation - might have been slowed down by the introduction of large amounts of fresh water e.g. from the Greenland ice cap, the melting by the previous warm period (the Medieval Warm Period). (skepticalscience.com)
In 2013, researchers found surprisingly high methane emissions and pollutants recorded in Greenland ice-cores starting around 100 B.C. They hypothesized that particles from metallurgy and greenhouse gases from large-scale agriculture around this time were caused by ancient Roman and Chinese civilizations. (scicoll.org)
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. (realclimate.org)
He unfortunately makes a large over-estimate in describing the magnitude of the 8.2 kyr event (claiming it lead to 5 deg C of global cooling, instead of a local result for Greenland), and then compares other 'events' to this more (climatically) well-documented case. (realclimate.org)
This particularly hinders investigation of the role of large, temporally clustered eruptions during the High Medieval Period (HMP, 1100-1300 CE), which have been implicated in the transition from the warm Medieval Climate Anomaly to the Little Ice Age5. (bvsalud.org)

The arctic ice cores contain tephra , bits of volcanic rock and ash, and analysis showed they are very chemically similar to reference tephra collected from Okmok. (syfy.com)
1% error) WDC06A chronological information, generated by a combination of layer counting and compared with the Hulu Cave record 9 , provides the opportunity to search for silicate ash, or tephra, from major volcanic eruptions that have previously been missed in the Antarctic record. (nature.com)
Inset map shows locations of terrestrial or marine (green dots) and ice core samples (blue dot), as well as isopachs, in mm, for tephra from the Oruanui eruption, where 0 represents trace deposition. (nature.com)
The Oruanui is the second largest eruption globally in the past 100 kyr, producing ~1,100 km 3 of tephra over a period of weeks to months 11 . (nature.com)

We marvel to see no shadows of our bodies at noon, to feel the mighty vigor of the sun's heat wasted into feebleness,' Italian historian Flavius Cassiodorus wrote at the time. (freerepublic.com)

Other strata between the basalt layers contain volcaniclastic and other sediments that indicate the long time intervals between eruptions, with rich vegetation taking root in a sub-tropic climate, and with local erosion or deposition of sediments in rivers and shallow lakes. (wikipedia.org)
One volcanically silent time period was especially long and resulted in the deposition of several sedimentary layers of varied composition, including strata rich in organic material that subsequently have generated considerable volumes of coal. (wikipedia.org)
Furthermore, volcanic eruptions have been proposed to lead to short-Term 10Be deposition enhancements. (lu.se)

A massive eruption plume would have sent a huge volume of volcanic particles into the air where they would have been widely dispersed by the wind," explains Piva. (sciencenewslab.com)
One theory points to massive lava eruptions during the breakup of the super-continent Pangea, which might have released vast amounts of carbon dioxide, causing runaway global warming. (armstrongeconomics.com)
This massive gathering and analyzing of data in real time is also allowing us to address to some of humanity biggest challenges, including pollution, world hunger, and illness. (ihavenotv.com)
When we look at the ancient poles that were once located on Greenland, it should be clear to anyone that such massive catastrophic events do not go unnoticed. (mariobuildreps.com)
Erosion has created a wonder from the massive tuff layers that were thrown out by catastrophic volcanic eruption a comfortable long time ago. (lkirchner.de)

Normalized Difference Vegetation Index (NDVI) for Great Britain, showing relative "greenness" of vegetation at the time. (sdakotabirds.com)
Researchers are studying linkages between NDVI, tree ring width, and volcanic activity to see if vegetation is responding to pre-eruption conditions. (sdakotabirds.com)

Volcanic eruptions and solar fluctuations were likely the most strongly varying external forcings during this period, but it is currently estimated that the temperature variations caused by these forcings were much less pronounced than the warming due to greenhouse gas forcing since the mid-19th century. (nationalacademies.org)

See geologic time scale for an overview of these time periods. (newworldencyclopedia.org)
Reconstructions of Earth's magnetic field prior to the record of historic observations are reliant on measurements on archaeologic (e.g. ceramics) and/or geologic (e.g. volcanic rocks, sediments) material that are able to record the ambient magnetic field at the time of their formation/manufacturing, the study of archaeo-/palaeomagnetism. (lu.se)

Some volcanic eruptions produced voluminous sheet flows each with a thickness of several tens of meters and covering hundreds of square kilometres. (wikipedia.org)
In recent times the coal has been worked from mines in between the basalt flows near the northern villages of Suðuroy. (wikipedia.org)
Radiocarbon dates of tree logs entombed in hot volcanic flows from the Taupō eruption refined its timing to around 232 CE (1,790 years ago). (sciencenewslab.com)

The overall thickness of volcanic and intervening rock layers of the Faroe Islands is more than 6 kilometres (3.7 mi), of which only 900 metres (3,000 ft) is located above the present sea level. (wikipedia.org)
5,000 and 3,000 years ago] , consistent with many sites from around Greenland depicting a switch from warm to cool conditions around that time. (notrickszone.com)

The Permian Extinction was marked by a major volcanic event which may have also involved an asteroid hit, which coincided with high atmospheric CO2. (armstrongeconomics.com)

In simple terms, each basalt lava flow of today's Faroe Islands represents one volcanic eruption during that time period. (wikipedia.org)
The 2021 volcanic blast in the Canary Islands entombed more than 2,800 buildings in lava and ash. (nationalgeographic.com)

In so doing it also provides an opportunity to give the real story - that change in Greenland and the rest of the Arctic is fast and accelerating. (realclimate.org)
The results are not good news for those who wish to maintain that today's Greenland Ice Sheet is losing ice area at an unprecedentedly accelerated rate, or that modern temperature values for the Arctic region are dangerously high. (notrickszone.com)
And both regions (Canadian Arctic and Greenland) are still 1 to 2°C colder now than they were just a few thousand years ago. (notrickszone.com)
His areas of expertise include permafrost , the term for soil or rock and ice that stays frozen for long periods of time, which is often found in Arctic regions such as Alaska, Greenland and Siberia. (howstuffworks.com)
Well, set your compass to 66°north… It's that island in between Greenland and Norway, hugging the arctic circle. (exploremore.eu)

There is a major climate shift at this time," D'Andrea said. (wattsupwiththat.com)
An impact to the Earth will cool the Earth for a few years, similar to what is observed again and again for a single major eruption. (physicsforums.com)
Our records show that 1992 is the first time that we have reached or exceeded the long-term average number of major earthquakes since 1971. (biblesearchers.com)

By measuring carbon-14 in tree rings and other materials we know are from a certain period, we can estimate how active the sun was at the time. (skepticalscience.com)

The main driver of the warming from the Little Ice Age to 1940 was the warming sun with a small contribution from volcanic activity. (skepticalscience.com)
A drop in volcanic activity after 1915 contributed slight warming in the early 20th Century. (skepticalscience.com)
The generally accepted cause was either an asteroid impact or volcanic activity. (armstrongeconomics.com)
Volcanic activity was high during this period of history, and we know from modern studies of volcanism that eruptions can have strong cooling effects on the climate for several years after an eruption. (skepticalscience.com)
The most likely influence during this period is variable output from the sun combined with pronounced volcanic activity. (skepticalscience.com)

2016) reveal in this encapsulating graph from the paper, the Greenland Ice Sheet's surface area has only negligibly retreated from that high point (~1900). (notrickszone.com)

Now we can see that many more of these great eruptions occurred during the prehistoric Ice Age than in modern times. (naturalnews.com)
This idea, called the early anthropogenic hypothesis , is controversial, and critics cite issues with ancient methane emission records and very small population sizes in prehistoric times. (scicoll.org)

A reconstruction of 5,600 years of climate history from lakes near the Norse settlement in western Greenland also shows how climate affected the Dorset and Saqqaq cultures. (wattsupwiththat.com)
PROVIDENCE, R.I. [from Brown University ] - The end of the Norse settlements on Greenland likely will remain shrouded in mystery. (wattsupwiththat.com)
Now researchers led by Brown University show the climate turned colder in an earlier span of several decades, setting in motion the end of the Greenland Norse. (wattsupwiththat.com)
The Norse colonies in Greenland were unable to survive the harsh winters. (skepticalscience.com)
event in 536 AD, the Mayan collapse around 800 AD, and the Norse colony collapse in Greenland to make his case that societies can be vulnerable to abrupt shifts in rainfall, temperature etc. (realclimate.org)

For instance, there is this piece, published by the International Business Times online, where they are postulating the most outrageous hypothesis that "dust" from the tail of Halleys comet has caused "climate change" in the past, they even make reference to the time of three pole shifts ago, aka the "Younger-Dryas" period which occurred c 13,000 bce. (zetatalk3.com)

This millennial-scale ice sheet recession took place at a time when an anthropogenic influence was non-existent, and when CO2 levels were safely in the range of 260 ppm - about 140 ppm lower than today's levels (400 ppm). (notrickszone.com)

Powerful volcanic eruptions can change global climate as there is usually a five to 10-year cooling period that follows. (naturalnews.com)
If we can find material from ancient eruptions it can now be used to give an accurate record of global volcanic events extending many hundreds of thousands of years back in time. (science20.com)
Volcanic eruptions cool global temperature for a few years after eruption. (skepticalscience.com)
Confirming the eruption date provides an opportunity to study the volcano's potential global effects on the atmosphere and climate, which is crucial for better understanding its eruptive history and behavior," Piva says . (sciencenewslab.com)
During the little ice age the global climate didn't change very much, with only northern Europe (and Greenland) experiencing colder than usual winters. (ornitorinko.org)
In their sagas, the ancient Greeks do not mention anything regarding a global cataclysm that might have happened during that time. (mariobuildreps.com)

Marine extinction intensity through time. (newworldencyclopedia.org)

As if to mirror the events on its surface, the interior of Earth rumbled with discontent at that same time. (syfy.com)
Geologists have long thought that a volcanic eruption was behind these more natural events, but had not been able to determine from where. (syfy.com)
The rings show similar events that began in 1628 B.C. and 1159 B.C., and rare written documents of those times seem also to describe cataclysmic social collapse. (freerepublic.com)
Historical records from ancient Rome and China describing events around 186 CE suggest a distant volcanic eruption clouded their skies, half a world away: the Sun rose "red as blood and lacking light" and "the heavens were ablaze", two scribes wrote. (sciencenewslab.com)

According to the University of Copenhagen physicists who were responsible for the research, these ancient eruptions "can teach us about our planet's sensitivity to Earth change. (naturalnews.com)
At the same time, fewer volcanic eruptions were happening on earth, which means that there was less ash in the air. (sciencedaily.com)
It is the same comet that was in earth-sun alignment the days of the three biggest earthquakes in recent times with Fukushima being the biggest and worst of them even when Elenin was far out in the outer solar system. (drsircus.com)
After awhile, you will see a time when there is another body comi ng between Earth and the Sun and leading to tremendous devastation . (drsircus.com)
From 1991 to 2018, the crater area increased by almost three times,' Sarah Cadieux , a lecturer in New York's Rensselaer Polytechnic Institute's department of Earth and environmental sciences, says via email. (howstuffworks.com)
Despite what she wails, she is now living in the best times ever to be a child on planet Earth. (apreat.ovh)
In contrast, during a mass extinction event some 20 to 50 percent of all genera on Earth at that time may become extinct over a period of one million years or less. (newworldencyclopedia.org)
An escarpment around Olympus Mons appears similar to those around volcanic islands on Earth. (nationalgeographic.com)
The two brown dwarfs are separated by about three times the distance between the Earth and the Sun. Binary brown dwarf systems are gravitationally bound and orbit about each other. (zetatalk3.com)

The Faroe Islands were formed during a period of a few million years, some 55 million years ago in early Paleogene times, when Europe and Greenland started to separate, opening up what became the Northeast Atlantic Ocean. (wikipedia.org)
He picks out a number of purported climate changes - the 8.2 kyr event, two less well-defined changes around 5200 and 4200 years ago, a mysterious (volcanic? (realclimate.org)

We compare two records obtained from CFA and discrete samples from the East Greenland Ice core Project (EGRIP) S6 firn core, reaching back to 1900gCE. (lu.se)
An ice core drilled on the Renland ice cap (RECAP) in east-central Greenland contains a continuous climate record dating through the last glacial period. (copernicus.org)
The Greenland Ice Core Chronology 2005, 15-42ka. (google.nl)
Ice core radionuclide measurements allow us to reconstruct the solar magnetic field and solar storms thousands of years back in time. (lu.se)

In case this isn't already clear, there is simply no measure - neither thickness nor areal extent - by which Greenland can be said to have lost 15 % of its ice. (realclimate.org)
The blue line is the 500m ice thickness contour which is the same as the outline on the Times Map. (realclimate.org)

Their geochemical make-up matched other samples from the Taupō eruption, collected in New Zealand. (sciencenewslab.com)
Here we report the first identification of New Zealand volcanic ash in Antarctic ice. (nature.com)
a BP) provides a key time marker for the LGM in the New Zealand sector of the SW Pacific. (nature.com)

Researchers have found evidence of cometary residue on Greenland ice laid down between AD 533 and 540. (zetatalk3.com)

Diseases1

Phenomena and Processes3

Named Groups1

Health Care2

Geographicals2

2,500 years2

Layers of volcanic ash2

Volcanoes2

Ancient volcanic2

Antarctica11

Gigantic2

Temperatures8

Volcano10

Sulfate4

2,0002

Impacts4

Sulfur4

Kamchatka2

GISP2 Greenland2

Explosive4

Svensson3

Indonesia2

Solar activity3

Iceland4

Stratosphere5

Scientists10

Large11

Tephra4

Sun's1

Deposition3

Massive5

Vegetation2

Fluctuations1

Geologic2

Flows3

3,0002

Atmospheric1

Lava2

Arctic5

Major3

Estimate1

Activity5

Reveal1

Prehistoric2

Norse5

Climate change1

Anthropogenic1

Global6

Intensity1

Events4

Earth9

Years ago2

Core4

Thickness2

Zealand3

Researchers1