The SAURON project – IX. A kinematic classification for early-type galaxies     

Eric Emsellem  Michele Cappellari  Davor Krajnovi&#;  Glenn van de Ven  R. Bacon  M. Bureau  Roger L. Davies  P. T. de Zeeuw  Jesús Falcón-Barroso  Harald Kuntschner  Richard McDermid  Reynier F. Peletier  Marc Sarzi 《Monthly notices of the Royal Astronomical Society》2007,379(2):401-417

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Evaluating the role of climate and tectonics during non-steady incision of the Yellow River: evidence from a 1.24 Ma terrace record near Lanzhou,China     

Baotian Pan  Huai Su  Zhenbo Hu  Xiaofei Hu  Hongshan Gao  Jijun Li  Eric Kirby 《Quaternary Science Reviews》2009,28(27-28):3281-3290

The competing roles of bedrock uplift and climatic change in the formation of fluvial terraces remain uncertain. Most of recent studies have attributed terrace formation to climatic changes and held that, even in tectonically active settings, climate variations control cycles of terrace planation and abandonment. Based on field investigations of loess-paleosol sequences, magnetostratigraphy and optically stimulated luminescence (OSL) dating, we develop a new chronology for a spectacular flight of terraces along the Yellow River near Lanzhou, China over past 1.24 Ma. All the terraces are strikingly similar in that they have several meters of paleosol developed directly above fluvial deposits on the terrace treads, suggesting that the abandonment of each terrace due to river incision occurs during the transition from glacial to interglacial climates. However, the ages of terraces cluster in two relatively short time periods (1.24–0.86 Ma and 0.13 Ma – present). During the intervening time between 0.86 Ma and 0.13 Ma, terraces either did not form or were not preserved. We suggest that this record indicates that rock uplift rates varied through time and influenced terrace formation/preservation. Thus, our results demonstrate the utility of deep chronologic records from fluvial terraces for deconvolving the effects of tectonics and climate on fluvial incision.  相似文献   

A limit on the presence of Earth-mass planets around a Sun-like star     

Eric Agol  Jason H. Steffen 《Monthly notices of the Royal Astronomical Society》2007,374(3):941-948

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The energy balance over land and oceans: an assessment based on direct observations and CMIP5 climate models   总被引：2，自引：0，他引：2  

Martin Wild  Doris Folini  Maria Z. Hakuba  Christoph Schär  Sonia I. Seneviratne  Seiji Kato  David Rutan  Christof Ammann  Eric F. Wood  Gert König-Langlo 《Climate Dynamics》2015,44(11-12):3393-3429

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Temporal survey of petroleum hydrocarbons, organochlorinated compounds and heavy metals in benthic marine organisms from Dhofar, southern Oman     

Fowler SW  Villeneuve JP  Wyse E  Jupp B  de Mora S 《Marine pollution bulletin》2007,54(3):357-367

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Experimental analysis of arsenic precipitation during microbial sulfate and iron reduction in model aquifer sediment reactors   总被引：4，自引：0，他引：4  

Matthew F. Kirk  Eric E. Roden  Adrian J. Brealey 《Geochimica et cosmochimica acta》2010,74(9):2538-6788

Microbial SO₄²⁻ reduction limits accumulation of aqueous As in reducing aquifers where the sulfide that is produced forms minerals that sequester As. We examined the potential for As partitioning into As- and Fe-sulfide minerals in anaerobic, semi-continuous flow bioreactors inoculated with 0.5% (g mL⁻¹) fine-grained alluvial aquifer sediment. A fluid residence time of three weeks was maintained over a ca. 300-d incubation period by replacing one-third of the aqueous phase volume of the reactors with fresh medium every seven days. The medium had a composition comparable to natural As-contaminated groundwater with slightly basic pH (7.3) and 7.5 μM aqueous As(V) and also contained 0.8 mM acetate to stimulate microbial activity. Medium was delivered to a reactor system with and without 10 mmol L⁻¹ synthetic goethite (α-FeOOH). In both reactors, influent As(V) was almost completely reduced to As(III). Pure As-sulfide minerals did not form in the Fe-limited reactor. Realgar (As₄S₄) and As₂S₃(am) were undersaturated throughout the experiment. Orpiment (As₂S₃) was saturated while sulfide content was low (∼50 to 150 μM), but precipitation was likely limited by slow kinetics. Reaction-path modeling suggests that, even if these minerals had formed, the dissolved As content of the reactor would have remained at hazardous levels. Mackinawite (Fe_1 + xS; x ? 0.07) formed readily in the Fe-bearing reactor and held dissolved sulfide at levels below saturation for orpiment and realgar. The mackinawite sequestered little As (<0.1 wt.%), however, and aqueous As accumulated to levels above the influent concentration as microbial Fe(III) reduction consumed goethite and mobilized adsorbed As. A relatively small amount of pyrite (FeS₂) and greigite (Fe₃S₄) formed in the Fe-bearing reactor when we injected a polysulfide solution (Na₂S₄) to a final concentration of 0.5 mM after 216, 230, 279, and 286 days. The pyrite, and to a lesser extent the greigite, that formed did sequester As from solution, containing 0.84 and 0.23 wt.% As on average, respectively. Our results suggest that As precipitation during Fe-sulfide formation in nature occurs mainly in conjunction with pyrite formation. Our findings imply that the effectiveness of stimulating microbial SO₄²⁻ reduction to remediate As contamination may be limited by the rate and extent of pyrite formation and the solubility of As-sulfides.  相似文献   

Natural disasters as the end of the insurance industry? Scalar competitive strategies, Alternative Risk Transfers, and the economic crisis   总被引：1，自引：0，他引：1  

Tristan Sturm  Eric Oh 《Geoforum》2010,41(1):154-163

The aftermath of Hurricane Katrina has piqued interest in the insurance industry, and this scrutiny has led to assumptions that the industry has become unstable and unprofitable with the increased incidence of disasters in highly-insured regions of the world. This paper challenges that assumption by arguing that the insurance industry has responded by spreading risk through scaled and networked recovery schemes. We found that because of competitive strategies of risk-spreading and displacement arrangements, the industry has actually profited as a whole. Regional insurance companies have always relied on the higher financial scales of the reinsurance industry in Munich, Zurich, and London. But with claims reaching into the billions of dollars, the reinsurance industry itself has raised premiums, spread risk farther afield, and jumped scale by spreading risk to futures markets called Alternative Risk Transfers (ARTs). However, the recession beginning in 2008 has called into question the viability of using futures markets as insurance. It is shown through a media analysis of four major business publications (The Economist, The New York Times, The Financial Times and The Wall Street Journal) how the industry responded to the costs of the 2004, 2005, and 2006 hurricane seasons. Because geography is rather new to this literature, this paper also offers a broad review of the insurance industry.  相似文献   

从埋藏学看法国的翼龙化石记录     

Eric BUFFETAUT 《地球学报》2010,31(Z1):7-9

The French pterosaur record extends from the Late Triassic to the end of the Cretaceous (Mazin et al., 2001 and references therein), with occurrences at various horizons of the Triassic, Jurassic and Creta-ceous, but the completeness and quality of the avail-able fossil material is highly variable.  相似文献   

Establishing constraints on groundwater ages with Cl,C, H,and noble gases: A case study in the eastern Paris basin,France     

Véronique Lavastre  Corinne Le Gal La Salle  Jean-Luc Michelot  Sophie Giannesini  Lucilla Benedetti  Joël Lancelot  Bernard Lavielle  Marc Massault  Bertrand Thomas  Eric Gilabert  Didier Bourlès  Norbert Clauer  Pierre Agrinier 《Applied Geochemistry》2010

Groundwaters from the Tithonian/Kimmeridgian, Oxfordian and Upper Dogger aquifers, within the eastern part of the Paris basin (France), were characterised using ³H, ¹⁴C and ³⁶Cl, and noble gases tracers, to evaluate their residence times and determine their recharge period. This information is an important prerequisite to evaluating the confinement properties of the Callovo-Oxfordian clay formation sandwiched between the Oxfordian aquifer and the Dogger aquifer, currently being investigated by the French nuclear waste management agency (Andra) for radioactive waste disposal. Data presented in this paper are used to test 4 hypotheses.  相似文献   

Erratum to “Establishing constraints on groundwater ages with Cl,C, H,and noble gases: A case study in the eastern Paris basin,France” [Applied Geochemistry 25 (1) (2010) 123–142]     

Véronique Lavastre  Corinne Le Gal La Salle  Jean-Luc Michelot  Sophie Giannesini  Lucilla Benedetti  Joël Lancelot  Bernard Lavielle  Marc Massault  Bertrand Thomas  Eric Gilabert  Didier Bourlès  Norbert Clauer  Pierre Agrinier 《Applied Geochemistry》2010

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