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Dale Jamieson 《Climatic change》2006,77(1-2):97-102
This paper explores the paradox that while Americans generally identify themselves as environmentalists, they show little willingness to voluntarily restrain their behavior or to support specific fiscal policies that would result in increased levels of environmental protection. I explore the role of values in the explanation of this paradox, and discuss some of the difficulties involved in studying values and their role in human behavior. 相似文献
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Trace element mobility in the mylonite zone within the ophiolite aureole,St. Anthony Complex,Newfoundland 总被引:1,自引:0,他引:1
The late syntectonic mylonite zone (45–100 m thick) within the dynamothermal aureole of the St. Anthony Complex in northwestern Newfoundland was derived from surrounding quartz and epidote amphibolites by deformation and the nearly isovolumetric metasomatism. Amphibolites have a composition typical of light REE-depleted ocean-floor tholeiites. Mylonites (biotite amphibolites) resemble transitional alkali basalts in major and trace element composition and in the interrelation among relatively immobile elements such as Ti, Zr, Nb, Y and P. Their REE patterns are enriched in light REE and show gradual depletion of heavy REE with La/Yb ratios ranging from 8.4 to 18.4. The results emphasize the need for caution in interpreting the concentration and ratios of any elements in mafic rocks which have been affected by metasomatism in an amphibolite facies shear zone. 相似文献
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Fiona Miller Annie Bolitho Natalie Jamieson Charlotte Catmur Anna Hurlimann Kathryn Bowen 《The Australian geographer》2014,45(1):19-35
Drawing upon theory from the field of urban political ecology, we analyse a major strategic water plan for Melbourne, Australia—the Sustainable water strategy for the Central Region, published in 2006. We assess the extent to which the strategy identified and addressed ecological sustainability in terms of: cultural frames; ecological context; social equity; and engagement processes. We identify that the strategy's framing of water was largely separate from its social and ecological context. This framing resulted in the importance of issues such as environmental flows, social equity and cultural values being diminished, thus avoiding the inevitable confrontation with environmental limits needed to ensure long-term ecological sustainability. Our analysis shows that the discursive dominance of economics limited the response to persuasive scientific arguments for greater ecological consideration in the strategy. Our findings suggest that broadening engagement with the diverse ways in which water is valued is likely to contribute to more equitable and ecologically sustainable water futures. 相似文献
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A re-evaluation of the olivine-spinel geothermometer 总被引:1,自引:0,他引:1
Peter L. Roeder Ian H. Campbell Heather E. Jamieson 《Contributions to Mineralogy and Petrology》1979,68(3):325-334
The Irvine olivine-spinel geothermometer, as formulated by Jackson (1969), appears to yield magmatic temperatures when applied
to plutonic rocks such as the Stillwater Complex but Evans and Wright (1972) have demonstrated that it gives temperatures
in excess of 2,000 ° C when applied to volcanic assemblages. A re-evaluation of the geothermometer has shown that more realistic
temperatures can be obtained for volcanic rocks by using a different free energy value of FeCr2O4 in the formulation. The revised geothermometer gives temperatures in the range 1,100–1,300 ° C for samples from Kilauea and
500–800 ° C for basic plutonic rocks from layered intrusions, indicating that Mg and Fe2+ have re-equilibrated at subsolidus temperatures in these intrusions as suggested by Irvine (1965). This theory was tested
by heating uncrushed natural samples from layered intrusions to magmatic temperatures for periods ranging from two days to
four weeks. The result was a marked increase in the Mg/Fe2+ ratio in the spinels and a decrease in the Mg/Fe2+ ratio in the olivines, confirming that considerable subsolidus re-equilibration had taken place in the unheated samples. 相似文献
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Ethics and intentional climate change 总被引:2,自引:0,他引:2
Dale Jamieson 《Climatic change》1996,33(3):323-336
In recent years the idea of geoengineering climate has begun to attract increasing attention. Although there was some discussion of manipulating regional climates throughout the 1970s and 1980s, the discussion was largely dormant. What has reawakened the conversation is the possibility that Earth may be undergoing a greenhouse-induced global warming, and the paucity of serious measures that have been taken to prevent it.In this paper I assess the ethical acceptability of ICC, based on my impressions of the conversation that is now taking place. Rather than offering a dispassionate analysis, I argue for a point of view. I propose a set of conditions that must be satisfied for an ICC project to be morally permissible and conclude that these conditions are not now satisfied. However, research on ICC should go forward so long as certain other conditions are met. I do not intend this to be the last word on the subject, but rather the first word. My hope is that others will be stimulated to think through the ethics of ICC. 相似文献