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More than 20 countries generate electricity from geothermal resources and about 60 countries make direct use of geothermal energy. A ten-fold increase in geothermal energy use is foreseeable at the current technology level. Geothermal Energy: An Alternative Resource for the 21st Century provides a readable and coherent account of all facets of geothermal energy development and summarizes the present day knowledge on geothermal resources, their exploration and exploitation. Accounts of geothermal resource models, various exploration techniques, drilling and production technology are discussed within 9 chapters, as well as important concepts and current technological developments.
The major part of the Netherlands consists of a low-lying river delta which is very sensitive to hydrological conditions in the North-Western part of the European continent. The rivers Rhine, Meuse and Scheldt carry through this delta to the North Sea annually nearly 100 km3 of fresh water. This water originates from a drainage basin of about 185 000 km2, which is 6 times the country area. The present geography of the Netherlands has largely been shaped by this river inflow and by the sediments which are carried along. Interaction of these fluxes with North Sea hydrodynamics in a period of rising sea level has produced large lowlands, which in the past millennium have been reclaimed for agricultural, urban and industrial...
In this project on future sustainable transport alternatives a two-step search process has been followed. First an analysis of critical success and failure factors of new technological options in passenger transport is made. These factors are found in the spatial, institutional, economic and social/psychological environment of the transport system. Next, systematically structured and expert based scenarios are con- structed in order to achieve a sustainable transport system in the year 2030 in which possible, expected and desired developments in the distinct fields are analyzed. Finally some policy conclusions are drawn.
In this project on future sustainable transport alternatives a two-step search process has been followed. First an analysis of critical success and failure factors of new technological options in passenger transport is made. These factors are found in the spatial, institutional, economic and social/psychological environment of the transport system. Next, systematically structured and expert based scenarios are con- structed in order to achieve a sustainable transport system in the year 2030 in which possible, expected and desired developments in the distinct fields are analyzed. Finally some policy conclusions are drawn.
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The Great Dismal Swamp (GDS) National Wildlife Refuge delivers multiple ecosystem services, including air quality and human health via fire mitigation. Our analysis estimates benefits of this service through its potential to reduce catastrophic wildfire related impacts on the health of nearby human populations. We used a combination of high-frequency satellite data, ground sensors, and air quality indices to determine periods of public exposure to dense emissions from a wildfire within the GDS. We examined emergency department (ED) visitation in seven Virginia counties during these periods, applied measures of cumulative Relative Risk to derive the effects of wildfire smoke exposure on ED visitation rates, and...
Long term low energy/low CO2 scenarios are developed for an interdisciplinary research about the significance, acceptability and feasibility of such scenarios. The social psychological research -- to measure the acceptability -- is directed at three determinants of cooperative behaviour in a social dilemma situation: knowledge, trust and morality. On the basis of this triad, research variables have been formulated and a research model has been developed. The sociological research -- to measure the feasibility -- concerns an assessment of resistances, blockades, interests, and conditions for cooperation of the involved organis- ations with regard to the (package of) measures and the expected effects of the measures....
Categories: Publication; Types: Citation
The direct and indirect consumption is responsible for more than half the anthropogenic emission of greenhouse gases, especially. It might well be that within 50 - 100 years countries like The Netherlands should reduce their CO2 emission with 80% or more. In principle many options can be developed and applied to reduce the CO2 emission. Focused on The Netherlands, the following ones are investigated within the Dutch National Research Programme on Global Air Pollution and Climate Change, phase I: energy efficiency improvement; material efficiency improvement and waste management; a shift to renewable energy sources, especially biomass; and decarbonization of fuels and flue gases. The reduce GHG emissions from The...
Many people believe that 'sustainable solutions' to global air pollution and climate change should include significant changes in human consumption and lifestyles. Under this heading six different NRP projects have been conducted. This chapter gives a review and assessment of these projects, supplemented with discussions of related research. The paper starts with a general statement of the environmental problem of household metabolism as a key component of the socio-economic production consumption cycle. It summarises and comments upon nine different (sub)projects. And it ends with general observations, conclusions and suggestions for research and policy in relation to sustainable consumption patterns. Conceptual...
We completed nine focus groups on perceptions of powerline right-of-way (ROW) management issues. In these groups we interviewed eastern Tennessee residents to determine the nature and range of knowledge and views regarding vegetation management, ROWs as wildlife habitat, and ROW aesthetics. We also conducted an extensive literature review to adduce other pertinent data. Participants in focus groups exhibited a wide range of attitudes and beliefs about the interview topics. Some associated wildlife habitat with areas devoid of humans ("wilderness" or "sanctuary"), whereas others thought of habitat as close as "my backyard." A majority referred to habitat in relatively objective terms such as "food, water, and cover"...
Streams and their surrounding catchments exchange water and solutes on a range of physical scales. Exchange with the stream may extend into the interstitial areas of the streambed, the hyporheic zone, the riparian area, or the catchment's groundwater flow system. Even at the smaller scales, the exchanges significantly influence solute transport, nutrient cycling, and the aquatic ecosystem. Over the recent decades, considerable attention has been given to the solute transport aspects of stream–groundwater interactions. Stream–groundwater interactions are now being recognized as practical matters to be considered in environmental issues, such as stream restoration and fish habitat. In this chapter, the emphasis is...
Abstract (from ScienceDirect): Quaking aspen (Populus tremuloides) forests throughout the western United States have experienced significant mortality in recent decades, which has been influenced by climate variability, especially drought. In the western portion of its range, where most precipitation arrives during winter as snowfall and summers are dry, snowdrifts that persist into the growing season provide soil moisture recharge that sustain aspen groves. Aspen groves are important locations of biodiversity within these landscapes. There is growing concern that reduced snowpack due to climate change may reduce the long-term persistence and productivity of aspen communities in these regions. In this study, we...