Sentences with phrase «time by the volcanic eruption»

Frozen in time by the volcanic eruption of Vesuvius, it is one of the best preserved ancient Roman sites.

Not exact matches

Benca irradiated 18 - inch - tall, bonsai - like pines with UV - B dosages up to 13 times stronger than on Earth today, simulating the effects of ozone depletion caused by immense volcanic eruptions that occurred at the end of the Permian Period.

Beyond human activity, tropical sea surface temperatures further back in time are affected by volcanic eruptions, changes in the intensity of sunlight and natural events like El Niño.

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..

One of the largest colonies of gentoo penguins in Antarctica was decimated by volcanic eruptions several times during the last 7,000 years according to a new study.

Indeed, the era between 65,000 and 25,000 years ago, toward the end of the Paleolithic, was a time of major volcanic eruptions, along with extremes of climate that included rapid shifts in temperature accompanied by alternately creeping and contracting glaciers across many regions of Eurasia.

The research team led by Dr. Jin - Young Lee confirmed in results from radiocarbon dating for carbonized wood (charcoal) found below the basaltic layer located in Sangchang - ri, Seogwipo - si, Jeju - do it dated back to 5,000 years ago; which means the time when the basalt on the upper layer was formed took place relatively recently, i.e. 5,000 years ago, and which demonstrates that the island has experienced a volcanic eruption fairly recently.

That left the El Chichon and Pinatubo volcanic eruptions in 1982 and 1991 as the remaining major natural perturbations to the climate trend, although that had as much to do with the timing of the eruptions as it did with the cooling caused by the nearly global distribution of volcanic ash in the upper atmosphere.

Time Safari is anxious to avoid disrupting the flow of history, however, and the allosaur being hunted (it's the same one each time) was chosen because it was about to be killed by a volcanic eruption anyTime Safari is anxious to avoid disrupting the flow of history, however, and the allosaur being hunted (it's the same one each time) was chosen because it was about to be killed by a volcanic eruption anytime) was chosen because it was about to be killed by a volcanic eruption anyway.

by removing the influence of exogenous factors like el Nino, volcanic eruptions, and solar variation (or at least, approximations of their influence) we can reduce the noise level in temperature time series (and reduce the level of autocorrelation in the process).

REMOVING THE LINEAR EFFECTS OF ENSO AND VOLCANIC AEROSOLS HELP TO SHOW THE TIMING OF THE WARMING Many papers and blog posts that attempt to prove the existence of anthropogenic global warming remove the obvious linear effects of El Niño - Southern Oscillation (ENSO) events and of stratospheric aerosols discharged by explosive volcanic erVOLCANIC AEROSOLS HELP TO SHOW THE TIMING OF THE WARMING Many papers and blog posts that attempt to prove the existence of anthropogenic global warming remove the obvious linear effects of El Niño - Southern Oscillation (ENSO) events and of stratospheric aerosols discharged by explosive volcanic ervolcanic eruptions.

One of the best known eruptions, Krakatau in Indonesia generated twenty times the amount of volcanic matter released by Mt St Helens in 1980.

You picked a time period (1980 - 1987) where the beginning was influenced by the volcanic eruption of El Chichon in 1981.

These solar flares, a million times more energetic than volcanic eruptions on Earth, often are accompanied by enormous explosions of plasma.

This climate modeling capability made it possible to perform a real - time climate change prediction (verified by subsequent observations) of the global cooling and stratospheric heating (and return to normal) following to the 1991 Pinatubo volcanic eruption.

However, detecting acceleration is difficult because of (i) interannual variability in GMSL largely driven by changes in terrestrial water storage (TWS)(7 ⇓ — 9), (ii) decadal variability in TWS (10), thermosteric sea level, and ice sheet mass loss (11) that might masquerade as a long - term acceleration over a 25 - y record, (iii) episodic variability driven by large volcanic eruptions (12), and (iv) errors in the altimeter data, in particular, potential drifts in the instruments over time (13).

Then I constructed an XY plot of temperature vs. forcings by year (with volcanic eruptions removed), fitted a line and got a strong linear relationship (R = 0.98) with a gradient of 0.32 C per watt / sq m and no sign of any change with time.