This page reports on the geologically volatile Long Valley, California area. The U.S. Geological Survey (USGS) continues to provide the public and civil authorities with current information on the volcano hazards at Long Valley and is prepared to give timely warnings of any impending eruption. In addition to photographs and a hazard response plan for earthquake and volcano hazards, the fact-sheet ... Full description.

This site features links to all aspects of Glacier Peak, a volcano in the Cascade Range, including its geographic setting, and geologic and eruptive history. Glacier Peak is not prominently visible from any major metropolitan centers, and thus its attractions, as well as its hazards, tend to be overlooked. Yet, Glacier Peak has produced larger and more explosive eruptions than any other Washington ... Full description.

This letter is part of a series in which a participant in the Teachers Experiencing Antarctica (TEA) program shares her work and discoveries with her friend, a glacial geologist. It discusses the many hazards that researchers need to avoid while working in Antarctica including dehydration, hypothermia, frostbite, sunburn of the eyes, and trench foot. She also describes the massive amount of gear they ... Full description.

This site is part of GeoNet Internet Geography, a resource for pre-collegiate British geography students and their instructors. This page focuses on various aspects of volcanoes, including the main features of a volcano, types of volcanoes, the Ring of Fire, locations of volcanoes, volcanic flows, and case studies about specific volcanoes. Full description.

In this lesson, students will explore volcanoes by constructing models and reflect upon their learning through drawing sketches of their models. Once they have finished making their models, they will experiment with making their volcanoes erupt. They will observe how eruption changes the original form of their volcano models. In this way, students see first hand how this type of phenomena creates ... Full description.

At this interactive site the student attempts to rate the eruption of a volcano according to the Volcanic Explosive Index (VEI). After seeing the step by step eruption of an actual volcano, the student is introduced to VEI scale, which includes a description of the eruption, volume of ejected material, plume height, eruption type, duration, total known eruptions with that VEI, and an example. Each ... Full description.

This web page uses photographs and illustrations of Kilauea Volcano, Hawaii, to illustrate the typical growth and collapse of lava deltas, fan-shaped platforms formed when pahoehoe lava enters the ocean for extended periods of time. The page also discusses the hazards associated with active lava deltas. Full description.

This United States Geological Survey (USGS) fact sheet is designed to educate visitors about safety in preparation for visiting Kilauea Volcano in Hawaii. This volcano has been erupting almost continuously since 1983 and is noted for its approachable lava flows; however, it undergoes many changes that can be unpredictable and life threatening. Topics include volcanic hazards such as bench collapse, ... Full description.

This United States Geological Survey (USGS) publication covers the 1973 eruption of Eldfell on the island of Heimaey in Iceland. Topics covered include the destruction, cleanup and restoration, controlling the lava flows, and how the town extracted heat from the lava. Selected readings are provided for further reference. Full description.

This article, from Earth: Inside and Out, provides insight into what scientists are learning about Mt. Rainier's volcanic past and future. It provides an overview of the nature of the work of Tom Sisson as a mountaineer and geologist with the Volcano Hazards Program at the United States Geological Survey, and the on-the-job hazards he faces. It explains how Sisson is creating a three-dimensional map ... Full description.