Why Is the US Surging in Volcanoes?
Posted June 04, 2019 09:08:13A report released by the National Volcanological Data Center (NVDC) found that the U.S. is seeing an increase in volcanic ash (Volcanic Eruption) and a decrease in volcanic earthquakes (Volcano Quakes).
According to the report, the U,S.
saw a 9.6% increase in Volcano Eruption, with a 5.6 percent decrease in Volcano Quakes.
Volcanic eruptions have been occurring on a larger scale over the past few years, with the increase being driven by the El Niño event and La Niña events.
However, the report also found that volcanic ash and earthquakes are increasing in magnitude as well as frequency.
“The rate of increase is increasing at a greater rate, as the rate of eruption increases, but the frequency of earthquakes and volcanic ash increases in the same way.
In fact, the frequency has gone up by more than a factor of ten.
It’s like a race track where every few seconds there’s a new one, so the frequency increases and the frequency increase is very rapid,” said James Ritchie, a geophysicist at the University of Hawaii and the study’s lead author.”
We’re seeing these changes over a much wider area of the United States, which is an important thing because these are eruptions that affect a much larger area,” he said.”
When you see the intensity of a volcanic eruption, that’s an indication of how big the eruption is and how close it is to the ground,” Ritchie said.
“That’s the way we want to measure the damage to a volcano.”
The report analyzed the records of more than 5,000 seismometers in the United State to determine the magnitude, frequency and duration of earthquakes, volcanic ash, and volcanic earthquakes.
The NVDC also analyzed seismic data from all U. S. states and territories, as well the National Oceanic and Atmospheric Administration (NOAA) data.
The report found that earthquakes decreased in frequency and intensity from 1.6 in 2014 to 0.7 in 2018, with seismometers reporting a decrease of about 5.4% each year.
However the increase was largely driven by an increase of earthquakes of 0.4 per year.
The National Volkontological Survey also reported a decrease at the same time, with an increase only of 0 .3% per year, but that decrease was largely caused by an average increase of 0 earthquakes per year for the period.
The decrease in earthquakes is the first time that the increase in earthquakes has occurred over the last several years, according to Ritchie.
In 2017, there were an average of 5.7 earthquakes per month in the U