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The 1980 eruption of Mount St. Helens in southwest Washington State radically changed the physical and socio-economic landscapes of the region. The eruption destroyed the summit of the volcano, sending large amounts of debris into the North Fork Toutle River, and blocking the sole means of drainage from Spirit Lake 4 miles north of Mount St. Helens. As a result of the blockage, rising lake levels could cause failure of the debris blockage, putting the downstream population of approximately 50,000 at risk of catastrophic flooding and mud flows. Further, continued transport of sediment to the river from volcanic debris deposits surrounding the mountain reduces the flood carrying capacity of do...
When discussing the risk of introducing drones into the National Airspace System, it is necessary to consider the increase in risk to people in manned aircraft and on the ground as well as the various ways in which this new technology may reduce risk and save lives, sometimes in ways that cannot readily be accounted for with current safety assessment processes. This report examines the various ways that risk can be defined and applied to integrating these Unmanned Aircraft Systems (UAS) into the National Airspace System managed by the Federal Aviation Administration (FAA). It also identifies needs for additional research and developmental opportunities in this field.
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This comprehensive book addresses the pressing need for up-to-date literature on volcanic destinations (active and dormant) and their role in tourism worldwide in chapters and case studies. The book presents a balanced view about the volcano-based tourism sector worldwide and discusses important issues such as the different volcanic hazards, potential for disasters and accidents and safety recommendations for visitors. Individual chapters and case studies are contributed by a number of internationally based co-authors, with expertise in geology, risk management, environmental science and other relevant disciplines associated with volcanoes. Also covered are risk aspects of volcano tourism such as risk perception, risk management and public safety in volcanic environments. Discussions of the demand for volcano tourism, including geotourism and adventure tourism as well as some historical facts related to volcanoes, with case studies of interesting socio-cultural settings are included.
With a long history and deep connection to the Earth’s resources, indigenous peoples have an intimate understanding and ability to observe the impacts linked to climate change. Traditional ecological knowledge and tribal experience play a key role in developing future scientific solutions for adaptation to the impacts. The book explores climate-related issues for indigenous communities in the United States, including loss of traditional knowledge, forests and ecosystems, food security and traditional foods, as well as water, Arctic sea ice loss, permafrost thaw and relocation. The book also highlights how tribal communities and programs are responding to the changing environments. Fifty authors from tribal communities, academia, government agencies and NGOs contributed to the book. Previously published in Climatic Change, Volume 120, Issue 3, 2013.
There is a great difficulty in the way of a writer who attempts to sketch a living Constitution-a Constitution that is in actual work and power. The difficulty is that the object is in constant change. An historical writer does not feel this difficulty: he deals only with the past; he can say definitely, the Constitution worked in such and such a manner in the year at which he begins, and in a manner in such and such respects different in the year at which he ends; he begins with a definite point of time and ends with one also. But a contemporary writer who tries to paint what is before him is puzzled and a perplexed: what he sees is changing daily. He must paint it as it stood at some one time, or else he will be putting side by side in his representations things which never were contemporaneous in reality.
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