Volcanoes Week

Our Geol9 class is exploring the volcanic hazards in different countries and their warning systems. I’ll be focusing on the US.

There are several ways we minimize the danger of volcanic activity (apart from the obvious of ‘getting out of the way’…(J:

·         Forecasting (earthquakes as early warnings -although in 2014 a Japanese volcano erupted without any previous seismicity (livescience article), land swelling before eruption, gas emissions, etc.)

·         Volcanic Alert Codes (USGS): the levels of alert and the aviation code levels commonly change at the same time (chart on right). A non-erupting volcano will have a green icon, and a red one indicates an imminent eruption (see USGS Alert Codes).

Today the US hazards map [below] shows 4 volcanoes as to be above normal background (elevated unrest):

Veniaminof, Kilauea, and Great Sitkin Alert Level=ADVISORY. Aviation Color Code=Yellow.

and Cleveland Alert Level=WATCH. Aviation Color Code=Orange.

If you want to know more about volcanoes and how we monitor them, there is a MOOC from the University of Iceland that starts in March you might want to enroll into. A short video explanation here.