Sentences with phrase «past large volcanic eruption»

The drill's filters, which clean water being pumped out of the borehole, became clogged with black dust — «volcanic ashes from some past large volcanic eruption,» speculated Slawek Tulaczyk, a glaciologist from the University of California, Santa Cruz, who has studied this region for two decades and co-leads the drilling project.

Not exact matches

Currently, volcanic activity is exhibited only via numerous geothermal vents scattered throughout the region, including the famous Old Faithful Geyser, but within the past two million years, it has undergone three extremely large explosive eruptions, up to 2,500 times the size of the 1980 Mount St.

The largest deep - ocean silicic volcanic eruption of the past century.

On at least three occasions during the past 7,000 years, the penguin population was similar in magnitude to today, but was almost completely wiped out locally after each of three large volcanic eruptions.

A new paper published January 10, 2018, in the journal Science Advances describes the first up - close investigation of the largest underwater volcanic eruption of the past century.

By simulating past summers — instead of relying solely on observations — the scientists established a large range of temperatures that could have occurred naturally under the same conditions, including greenhouse gas concentrations and volcanic eruptions.

«We are using Io as a volcanic laboratory, where we can look back into the past of the terrestrial planets to get a better understanding of how these large eruptions took place, and how fast and how long they lasted,» Davies said.

In Earth's past the trigger for these greenhouse gas emissions was often unusually massive volcanic eruptions known as «Large Igneous Provinces,» with knock - on effects that included huge releases of CO2 and methane from organic - rich sediments.

«We are using Io as a volcanic laboratory, where we can look back into the past of the terrestrial planets to get a better understanding of how these large eruptions took place, and how fast and how long they lasted,» states Davies.

The large volcanic eruptions in the past half century (reaching the stratosphere) were Agung (1963), El Chichon (1982) and the Pinatubo (1992).

If we take some notable volcanoes in the past 600 years (Figure 1), we can confirm that frost rings in bristlecone pines are good indicators of large explosive volcanic eruptions, similar to the known coincidence of hemispheric cooling evidenced in growth rings of European trees in the years around historically dated eruptions.

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.

There they reflect sunlight back into space, mimicking the influence of large volcanic eruptions that have temporarily cooled the planet in the past.

Given the absence of large volcanic eruptions in the past two decades (the last one being Mount Pinatubo in 1991), multiple volcanic eruptions would cause a cooling tendency [196] and reduce heat storage in the ocean [197].

Many years of low growth identified in a western USA regional chronology of upper forest border bristlecone pine (Pinus longaeva and Pinus aristata) over the last 5000 yr coincide with known large explosive volcanic eruptions and / or ice core signals of past eruptions.