Volcanoes
Be Ready!
Scientists keep close watches on areas where volcanoes are likely to
erupt.� That�s good news for most people, who usually have plenty of time
to plan before a nearby mountain blows its top.
There are warning signs that let scientists know a volcanic may soon
erupt: it will swell, spout steam and gas, and rumble noisily for several
months. Other ways volcanologists monitor active volcanoes include:
- examining rock deposits from previous eruptions to chart their frequency
- using seismometers to detect even small quakes that often occur before
an eruption
- monitoring geophones, which are microphones placed underground in
river valleys to �listen� for approaching mudslides
If you learn there's a chance of a volcanic eruption near your home,
you should have a family escape plan that includes:
- Ways to get to safety on high ground, far away from the eruption
- A back-up route, just in case the main roads are blocked
- A plan for keeping in touch in case family members are separated
- An out-of-state relative or friend to serve as the family contact
� someone you can call by phone and report where and how you are
After a volcano erupts, be sure to:
- Stay away from volcanic ashfall areas
- Wear goggles to protect your eyes
- Put a dust mask or kerchief over your mouth and nose
- Wear a long-sleeved shirt and pants to keep your skin covered and
limit contact with any itchy ash
Experts recommend that you stay indoors until local health officials
tell you it�s safe to go outside, especially if you have asthma or another
type of breathing problem.
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