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Author: Richard B. Waitt Publisher: ISBN: Category : Volcanic hazard analysis Languages : en Pages : 9
Book Description
Volcanic hazards at Glacier Peak result from several different phenomena: tephra fall, pyroclastic flows, pyroclastic surges, ballistic ejection, debris avalanches, lahars, and floods. Lahars represent the greatest hazard, followed by tephra fall. We describe each of these phenomena, the damage it can cause, its history of occurrence at Glacier Peak (if known), and where around Glacier Peak that damage is most likely to occur.
Author: Richard B. Waitt Publisher: ISBN: Category : Volcanic hazard analysis Languages : en Pages : 9
Book Description
Volcanic hazards at Glacier Peak result from several different phenomena: tephra fall, pyroclastic flows, pyroclastic surges, ballistic ejection, debris avalanches, lahars, and floods. Lahars represent the greatest hazard, followed by tephra fall. We describe each of these phenomena, the damage it can cause, its history of occurrence at Glacier Peak (if known), and where around Glacier Peak that damage is most likely to occur.
Author: National Research Council Publisher: National Academies Press ISBN: 0309070961 Category : Science Languages : en Pages : 150
Book Description
The United States has more than 65 active or potentially active volcanoes, more than those of all other countries except Indonesia and Japan. During the twentieth century, volcanic eruptions in Alaska, California, Hawaii, and Washington devastated thousands of square kilometers of land, caused substantial economic and societal disruption and, in some instances, loss of life. More than 50 U.S. volcanoes have erupted one or more times in the past 200 years. Recently, there have been major advances in our understanding of how volcanoes work. This is partly because of detailed studies of eruptions and partly because of advances in global communications, remote sensing, and interdisciplinary cooperation. The mission of the Volcano Hazards Program (VHP) is to "lessen the harmful impacts of volcanic activity by monitoring active and potentially active volcanoes, assessing their hazards, responding to volcanic crises, and conducting research on how volcanoes work." To provide a fresh perspective and guidance to the VHP about the future of the program, the Geologic and Water Resources Divisions of the United States Geological Survey (USGS) requested that the National Research Council conduct an independent and comprehensive review. Review of the U. S. Geological Survey's Volcano Hazards Program is organized around the three components of hazards mitigation. Chapter 2 deals with research and hazard assessment. Chapter 3 covers monitoring and Chapter 4 discusses crisis response and other forms of outreach conducted by the VHP. Chapter 5 describes various cross-cutting programmatic issues such as staffing levels, data formats, and partnerships. Chapter 6 offers a vision for the future of the Volcano Hazards Program, and Chapter 7 summarizes the conclusions and recommendations of the preceding chapters. Throughout the report, major conclusions are printed in italics and recommendations in bold type. The committee has written this report for several different audiences. The main audience is upper management within the USGS and the VHP. However, the committee believes that scientists within the VHP will also find the report valuable. The report is written in such a manner as to be useful to congressional staff as well.
Author: Dwight Raymond Crandell Publisher: ISBN: Category : Geology Languages : en Pages : 38
Book Description
During postglacial time Mount Rainier volcano apparently was characterized by long quiet periods punctuated by brief episodes of activity; thus, its present dormant state cannot be regarded as a reliable sign that the volcano is now extinct. If the pattern of past activity continues, a substantial steam, pumice, or lava eruption might occur on an average of one each 500-1,000 years. The direct hazard presented by future eruptions of lava, pumice, or steam is not regarded as great, but such eruptions may cause devastating floods and debris flows. Whatever their origin, debris flows are regarded as a major hazard because of their frequency and movement along valley floors where works of man are concentrated. Their destructive effects can be minimized by careful land-use planning on valley floors.--p.24.
Author: Richard B. Waitt
Author: Richard B. Waitt
Author: James Earl Beget
Author: James E. Beget
Author: National Research Council
Author: James Earl Beget
Author: Dwight Raymond Crandell
Author: Dwight Raymond Crandell
Author: Geological Survey (U.S.)
Author: Edward W. Wolfe
Author: Robert I. Tilling