Predicting Geologic Hazardshhhhhhhhhhhhhhh.pptx

kkkkkkkkkkkk

1. Predicting Geologic Hazards

2. To determine the likelihood of a volcanic eruption, scientists analyze data : Locations of active volcanoes Volcano’s past eruptions Eruption predictions are not always certain because most volcanoes do not erupt on regular schedules

3. Before some eruptions, specific conditions or precursor events can be identified : magma,  moves closer to the surface.  small earthquakes. Release of gases into the air ground surface changes shape. Data from monitoring help scientists predict the probability of an eruption. However, precursor events and changes in a volcano’s conditions may occur without ending in an eruption.

4. Monitoring Volcanoes Scientists monitor volcanoes by using technology that detects slight changes in the ground and air around a volcano.  GPS instruments Thermal imaging sensors   Tiltmeter