Motivating mitigation: when health matters more than climate change     

Nada Petrovic  Jaime Madrigano  Lisa Zaval 《Climatic change》2014,126(1-2):245-254

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Evaluation of Methane Sources in Groundwater in Northeastern Pennsylvania   总被引：1，自引：0，他引：1  

Lisa J. Molofsky  John A. Connor  Albert S. Wylie  Tom Wagner  Shahla K. Farhat 《Ground water》2013,51(3):333-349

Testing of 1701 water wells in northeastern Pennsylvania shows that methane is ubiquitous in groundwater, with higher concentrations observed in valleys vs. upland areas and in association with calcium‐sodium‐bicarbonate, sodium‐bicarbonate, and sodium‐chloride rich waters—indicating that, on a regional scale, methane concentrations are best correlated to topographic and hydrogeologic features, rather than shale‐gas extraction. In addition, our assessment of isotopic and molecular analyses of hydrocarbon gases in the Dimock Township suggest that gases present in local water wells are most consistent with Middle and Upper Devonian gases sampled in the annular spaces of local gas wells, as opposed to Marcellus Production gas. Combined, these findings suggest that the methane concentrations in Susquehanna County water wells can be explained without the migration of Marcellus shale gas through fractures, an observation that has important implications for understanding the nature of risks associated with shale‐gas extraction.  相似文献   

Corrected prediction intervals for change detection in paired watershed studies     

Nicholas A. Som  Nicolas P. Zégre  Lisa M. Ganio  Arne E. Skaugset 《水文科学杂志》2013,58(1):134-143

Abstract

Hydrological data may be temporally autocorrelated requiring autoregressive process parameters to be estimated. Current statistical methods for hydrological change detection in paired watershed studies rely on prediction intervals, but the current form of prediction intervals does not include all appropriate sources of variation. Corrected prediction intervals for the analysis of paired watershed study data that include variation associated with covariance and linear model parameter estimation are presented. We provide an example of their application to data from the Hinkle Creek Paired Watershed Study located in the western Cascade foothills of Southern Oregon, USA. Research implications of using the correct prediction limits and incorporating the estimation uncertainty of autoregressive process parameters are discussed.

Editor D. Koutsoyiannis

Citation Som, N.A., Zégre, N.P., Ganio, L.M. and Skaugset, A.E., 2012. Corrected prediction intervals for change detection in paired watershed studies. Hydrological Sciences Journal, 57 (1), 134–143.  相似文献   

Interpreting amenities,envisioning the future: common ground and conflict in North Carolina’s rural coastal communities     

Noëlle Boucquey  Lisa M. Campbell  Gabriel Cumming  Zoë A. Meletis  Carla Norwood  Joshua Stoll 《GeoJournal》2012,77(1):83-101

This paper contributes to ongoing discussions about the implications of rural change and amenity migration for members of diverse rural communities. We engage with recent amenity migration and political ecology literature that focuses on social constructions of nature and landscapes, and how these constructions affect the attitudes and opinions of community members. We use our case study of a mail-based survey in Down East, North Carolina to suggest that the ways in which people conceptualize the particular ‘natures’ and landscapes of a place matters in terms of shaping people’s attitudes with respect to ongoing processes of change. We find that people’s opinions about environment, culture, and land use are often superficially similar but that when conflicts arise or particular actions are considered, substantial differences in people’s underlying conceptual frameworks are revealed. In particular we find that despite widespread shared appreciation of the environment and culture Down East, differing interpretations of these key terms lead to potential misunderstandings and land use planning challenges.  相似文献   

Threshold of tolerance model: strategy for international travel     

Deborah Meyer  Lisa Robyn Barnes  Anton Kriz 《GeoJournal》2014,79(5):557-563

The purpose of this research is to investigate what factors influence the management of International Business Air Travel (IBAT). The researchers interviewed 34 business travellers, travel organisers and executives involved in IBAT from ten organisations in differing industries, in Australia. It was found that there are a multitude of factors influencing IBAT management, including professionalism and job satisfaction of travellers and the achievement of organisational goals such as carrying out successful international ventures or operating effectively in international markets. From the findings a strategic model was developed called the Threshold of Tolerance Model—which illustrates the potential point where both organisational goals are most likely to be met and where IBAT is most likely to be well managed for both travellers and organisations.  相似文献   

Three-dimensional hydrofacies assemblages in ice-contact/proximal sediments forming a heterogeneous ‘hybrid’ hydrostratigraphic unit in central Illinois,USA     

Lisa A. Atkinson  Martin Ross  Andrew J. Stumpf 《Hydrogeology Journal》2014,22(7):1605-1624

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Narrow-beam X-ray tests of CCD edge response     

Stephen Kuhlmann  Harold Spinka  Joseph P. Bernstein  Kevin A. Beyer  Lisa M. Gades  Thomas E. Kasprzyk  Antonino Miceli  Richard A. Spence  Richard Talaga 《Experimental Astronomy》2011,29(3):135-144

The physical boundaries of a fully-depleted CCD can lead to distorted field lines and non-uniform response. We study this response with a beam of X-rays constrained to a width of less than one pixel (15 \upmu\upmum), and a system to map the CCD response as a function of transverse position.  相似文献   

Kinetics of selenium release in mine waste from the Meade Peak Phosphatic Shale,Phosphoria Formation,Wooley Valley,Idaho, USA     

Lisa L. Stillings  Michael C. Amacher 《Chemical Geology》2010,269(1-2):113-123

Phosphorite from the Meade Peak Phosphatic Shale member of the Permian Phosphoria Formation has been mined in southeastern Idaho since 1906. Dumps of waste rock from mining operations contain high concentrations of Se which readily leach into nearby streams and wetlands. While the most common mineralogical residence of Se in the phosphatic shale is elemental Se, Se(0), Se is also an integral component of sulfide phases (pyrite, sphalerite and vaesite–pyrite_ss) in the waste rock. It may also be present as adsorbed selenate and/or selenite, and FeSe₂ and organo-selenides.Se release from the waste rock has been observed in field and laboratory experiments. Release rates calculated from waste rock dump and column leachate solutions describe the net, overall Se release from all of the possible sources of Se listed above. In field studies, Se concentration in seepage water (pH 7.4–7.8) from the Wooley Valley Unit 4 dump ranges from 3600 µg/L in May to 10 µg/L by Sept. Surface water flow, Q, from the seep also declines over the summer, from 2 L/s in May to 0.03 L/s in Sept. Se flux ([Se] ? Q) reaches a steady-state of < 150 mg/day in 1–4 months, depending upon the volume of Q. Se release (mg/L) follows a first order reaction with a rate constant, k, = 1.35 – 6.35e?3 h^? 1 (11.8–55.6 yr^? 1).Laboratory experiments were performed with the waste shale in packed bed reactors; residence time varied from 0.09 to 400 h and outlet pH ～ 7.5. Here, Se concentration increased with increasing residence time and release was modeled with a first order reaction with k = 2.19e?3 h^? 1 (19.2 yr^? 1).Rate constants reported here fall within an order of magnitude of reported rate constants for oxidation of Se(0) formed by bacterial precipitation. This similarity among rate constants from both field and laboratory studies combined with the direct observation of Se(0) in waste shales of the Phosphoria Formation suggests that oxidation of Se(0) may control steady-state Se concentration in water draining the Wooley Valley waste dump.  相似文献   

A liminal territory: Gaza,executive discretion,and sanctions turned humanitarian     

Lisa Bhungalia 《GeoJournal》2010,75(4):347-357

In September 2007 Israel’s security cabinet approved a ‘hostile entity’ classification for the Gaza Strip and intensified its economic and diplomatic blockade of this Hamas-controlled region. Taking the ‘hostile entity’ classification as a point of entry, this paper examines the construction of Gaza as an insurgent zone, a liminal space within which Israel’s executive discretion has authorizing force. Central to this process, it argues, is a blurring of lines between the civilian and combatant—the elimination of a purely civilian space. This paper begins with an analysis of the discursive strategies employed to collapse the space between the civilian body and battlefield in Gaza. It then turns to an examination of socio-spatial practices mobilized around the ‘hostile entity’ classification, foremost Israel’s sanctions policy, and argues this counter-insurgency strategy entails regulation and management of the Palestinian body combined with the active subjugation of Palestinian life to the power of death. Centrally, this paper attends to the relationship between geopolitics and violence at the scale of the (Palestinian) body.  相似文献   

Fractured-Aquifer Hydrogeology from Geophysical Logs: Brunswick Group and Lockatong Formation, Pennsylvania   总被引：1，自引：0，他引：1  

Roger H. Morin  Lisa A. Senior  Edward R. Decker 《Ground water》2000,38(2):182-192

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