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Tide gauges show that global sea level has risen about 7 inches during the 20th century, and recent satellite data show that the rate of sea-level rise is accelerating. As Earth warms, sea levels are rising mainly because ocean water expands as it warms; and water from melting glaciers and ice sheets is flowing into the ocean. Sea-level rise poses enormous risks to the valuable infrastructure, development, and wetlands that line much of the 1,600 mile shoreline of California, Oregon, and Washington. As those states seek to incorporate projections of sea-level rise into coastal planning, they asked the National Research Council to make independent projections of sea-level rise along their coasts for the years 2030, 2050, and 2100, taking into account regional factors that affect sea level. Sea-Level Rise for the Coasts of California, Oregon, and Washington: Past, Present, and Future explains that sea level along the U.S. west coast is affected by a number of factors. These include: climate patterns such as the El Niño, effects from the melting of modern and ancient ice sheets, and geologic processes, such as plate tectonics. Regional projections for California, Oregon, and Washington show a sharp distinction at Cape Mendocino in northern California. South of that point, sea-level rise is expected to be very close to global projections. However, projections are lower north of Cape Mendocino because the land is being pushed upward as the ocean plate moves under the continental plate along the Cascadia Subduction Zone. However, an earthquake magnitude 8 or larger, which occurs in the region every few hundred to 1,000 years, would cause the land to drop and sea level to suddenly rise.
Social science research conducted since the late 1970's has contributed greatly to society's ability to mitigate and adapt to natural, technological, and willful disasters. However, as evidenced by Hurricane Katrina, the Indian Ocean tsunami, the September 11, 2001 terrorist attacks on the United States, and other recent events, hazards and disaster research and its application could be improved greatly. In particular, more studies should be pursued that compare how the characteristics of different types of events-including predictability, forewarning, magnitude, and duration of impact-affect societal vulnerability and response. This book includes more than thirty recommendations for the hazards and disaster community.
The Clean Water Act (CWA) requires that wetlands be protected from degradation because of their important ecological functions including maintenance of high water quality and provision of fish and wildlife habitat. However, this protection generally does not encompass riparian areasâ€"the lands bordering rivers and lakesâ€"even though they often provide the same functions as wetlands. Growing recognition of the similarities in wetland and riparian area functioning and the differences in their legal protection led the NRC in 1999 to undertake a study of riparian areas, which has culminated in Riparian Areas: Functioning and Strategies for Management. The report is intended to heighten awareness of riparian areas commensurate with their ecological and societal values. The primary conclusion is that, because riparian areas perform a disproportionate number of biological and physical functions on a unit area basis, restoration of riparian functions along America's waterbodies should be a national goal.
Over the past decades, considerable debate has emerged surrounding the use of cost-benefit analysis (CBA) to analyze and make recommendations for environmental and safety regulations. Critics argue that CBA forces values on unquantifiable factors, that it does not adequately measure benefits across generations, and that it is not adaptable in situations of uncertainty. Proponents, on the other hand, believe that a well-done CBA provides useful, albeit imperfect, information to policymakers precisely because of the standard metrics that are applied across the analysis. Largely absent from the debate have been practical questions about how the use of CBA could be improved. Relying on the assumption that CBA will remain an important component in the regulatory process, this new work from Resources for the Future brings together experts representing both sides of the debate to analyze the use of CBA in three key case studies: the Clean Air Interstate Rule, the Clean Air Mercury Rule, and the Cooling Water Intake Structure Rule (Phase II). Each of the case studies is accompanied by critiques from both an opponent and a proponent of CBA and includes consideration of complementary analyses that could have been employed. The work's editors - two CBA supporters and one critic - conclude the report by offering concrete recommendations for improving the use of CBA, focusing on five areas: technical quality of the analyses, relevance to the agency decision-making process, transparency of the analyses, treatment of new scientific findings, and balance in both the analyses and associated processes, including the treatment of distributional consequences.
Where the Waters Begin takes us up the Nisqually side of Mount Rainier through the traditional beliefs of the Nisqually people and their relationship to the bountiful natural resources the mountain offered them. The Nisqually are the original stewards of the prairies, mountains, and rivers west of the mountain on lands that are now Thurston and Pierce Counties. Living in a more natural world, without the complexities of today, they developed a coexistence with nature that included respect and appreciation of its beneficent forces as well as fear of its darker sides. The deep connection the Nisqually people developed with the mountain they called Ta-co-bet is best related through their traditional stories. Author and Nisqually tribal historian Cecelia Svinth Carpenter brings those stories to life here in Where the Waters Begin: the Traditional Nisqually Indian History of Mount Rainier.
This document is a cooperative effort among fifteen Federal agencies and partners to produce a common reference on stream corridor restoration. It responds to a growing national and international interest in restoring stream corridors.