volcano

Visualization of ash cloud predictions from Mount St. Helens

The U.S. Geological Survey (USGS) Volcano Hazards Program's visualization shows the projected ash cloud for three differently-sized, hypothetical eruptions of Mount St. Helens. The visualizations depict a simulation of the spread of volcanic ash, based on a combination of wind data from the National Oceanic and Atmospheric Administration (NOAA) and volcanologist-derived eruption size parameters.

Dr. Hiroo Kanamori, Seismologist & Geophysicist, Recognized as the 2015 Marcus Milling Legendary Geoscientist

Submitted by mmoses on

The American Geosciences Institute is pleased to recognize Dr. Hiroo Kanamori with the Marcus Milling Legendary Geoscientist Medal at the 2015 American Association of Petroleum Geologists Annual Convention and Exposition. Kanamori has been described as "a towering figure in seismology and geophysics."

Interactive map of natural hazards worldwide

The National Oceanic and Atmospheric Administration's natural hazards viewer shows a variety of recent and historic natural hazards around the world. The interactive map provides data for a range of natural hazards, including tsunamis, volcanic eruptions, and earthquakes. Users can select individual hazards to learn more about the date of occurrence, location, severity, economic impact, and social impact.

Click here to use the NOAA natural hazards viewer

Interactive map of volcanoes and current volcanic activity alerts in the United States

The U.S. Geological Survey's Volcanoes and Current Activity Alerts map shows the location and activity levels of all volcanoes in the United States. The map allows for filtering based on both location and current volcano status. Each volcano is depicted by a small colored triangle with different colors indicating various volcano alert levels:

  • Green = normal
  • Yellow = advisory
  • Orange = watch
  • Red = warning

Users can click on individual volcanoes to see that volcano's page on the USGS website.

Earth's Dynamic Geosphere: Plate Tectonics Activity 5 - The Changing Geography of Your Community

Here you will find resources to help educators and their students use several present-day distributions of minerals, rock formations and fossils to help figure out the distribution of continents; construct a map showing the position of continents 250 million years ago by reversing the present direction of plate motion; recognize a convergence of presently widely scattered minerals, rock formation and fossils when all the continents where part of Pangea; compare present average community motions with that of the past 250 million years by calculating the average yearly rate of motion over the last 250 million years; describe the context in which the hypothesis of continental drift was proposed and why it was subjected to criticism; show that your community has moved through different ecological regions over time.

Earth's Dynamic Geosphere: Plate Tectonics Activity 4 - Effects of Plate Tectonics

Here you will find resources to help educators and their students use maps to examine the distribution of earthquakes and volcanoes to the location of plate boundaries; explain the location, nature and cause of volcanic arcs in terms of plate tectonics; explain the location, nature and cause of hot spots; explain how plate-tectonic processes have caused continents to grow through geologic time; explain how plate-tectonic processes produce landforms; explain how plate tectonics can affect the interior of a continent.

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