Sentences with phrase «lead pollution recorded»

More information: Joseph R. McConnell el al., «Lead pollution recorded in Greenland ice indicates European emissions tracked plagues, wars, and imperial expansion during antiquity,» PNAS (2018).

Not exact matches

In Greenland lead isotopes in ice cores reveal a record of lead pollution from Roman smelting in Spain some 2,000 years ago.

The researchers compared the lead isotopes in their sediment samples with those found in preserved Roman piping to create a historical record of lead pollution flowing from the Roman capital.

The team's thousand - year historical record included noticeable changes in lead pollution from Rome following major events such as the Gothic Wars in 535 C.E., Byzantine repairs to abandoned Roman aqueducts in 554 C.E., and the mid-9th century Arab sack of Rome.

Our ensemble fire weather season length metric captured important wildfire events throughout Eurasia such as the Indonesian fires of 1997 — 98 where peat fires, following an El Niño - induced drought, released carbon equivalent to 13 — 40 % of the global fossil fuel emissions from only 1.4 % of the global vegetated land area (Fig. 4, 1997 — 1998) 46 and the heatwave over Western Russia in 2010 (Fig. 4, 2010) that led to its worst fire season in recorded history and triggered extreme air pollution in Moscow51.

McConnell, J.R., Maselli, O.J., Sigl, M., Vallelonga, P., Neumann, T., Anschutz, H., Bales, R.C., Curran, M.A.J., Das, S.B., Edwards, R., Kipfstuhl, S., Layman, L. and Thomas, E.R., 2014, Antarctic - wide array of high - resolution ice core records reveals pervasive lead pollution began in 1889 and persists today.

Considering that the ice core record can identify pollution from Roman lead foundries, the answer is certainly yes.

Rachel Buxton, a post-doctoral researcher at Colorado State University's Warner College of Natural Resources and lead author of the study, led a team of researchers that recorded sounds at 492 sites across the country in order to quantify the extent of noise pollution in the U.S. Using baseline sound levels for each study area established by machine learning algorithms that took into account geospatial features of the area, the researchers determined that anthropogenic noise pollution exceeds three decibels (dB), essentially doubling background sound levels, in 63 percent of the nation's protected areas.