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31.
Simone Carr-Cornish Peta Ashworth John Gardner Stephen J. Fraser 《Climatic change》2011,107(3-4):549-565
There is a large body of research and development into the low emission energy technologies that has the potential to assist developed and developing countries transition to more sustainable energy systems. It has long been recognised that public perceptions can have a fundamental effect on the market for technology and this issue raises questions about the role society will play in developing a low emissions energy future. Understanding how the public will respond to the range of low emission energy technologies as part of a climate change mitigation package is therefore critical for researchers, policy makers and industry stakeholders. In the current research, we investigated the Australian public’s likely acceptance of a range of low emission energy technologies by assessing the diverse ‘orientations’ that have emerged in response to low emission energy technologies. In a survey of two Australian states we measured the support for, and knowledge of, a range of low emission energy technologies. Using self-organising maps, a relatively new approach for segmenting response profiles, we identified that at least four distinct ‘orientations’ have emerged toward the issue and are characterising the likely acceptance of these technologies: ‘Disengaged’, ‘Nuclear Oriented’, ‘Renewables Oriented’, and ‘Engaged’. The implications of these multiple public viewpoints are described for climate change mitigation policy and for future research into the social acceptance of alternative energy technologies. 相似文献
32.
Ohne Zusammenfassung 相似文献
33.
The response of the LLN 2-D climate model to the insolation and CO2 forcings during the Eemian interglacial is compared to reconstructions obtained from deep-sea cores drilled in the Norwegian
Sea and in the North Atlantic. Both reconstructions and modeling results show a decrease of sea-surface temperature (SST)
in the higher latitudes (70–75 °N zonal belt for the model and the Norwegian Sea for the proxy records), associated with a
more moderate cooling at lower latitudes (50–55 °N and North Atlantic), at the middle of isotopic substage 5e, several millenia
before the beginning of continental ice-sheet growth. Such a comparison between the simulated SST and ice volume of the Northern
Hemisphere has been extended to the whole last glacial-interglacial cycle. The influence of the insolation forcing on SST
and the shortcomings of the model due to its zonal character are discussed.
Received: 6 July 1995/Accepted: 19 December 1995 相似文献
34.
Kenneth H. Lister 《Ground Water Monitoring & Remediation》1989,9(3):101-111
Project organization problems are not uncommon in ground water monitoring projects, particularly those which occur at sites remote from the office. Successful project management depends on coordination of the personnel, supplies, and equipment necessary to carry out each phase of the project. Procedures for planning and organizing field projects involving well installation, ground water sampling, and aquifer testing are outlined. Methods are suggested that will aid the Project Manager in planning and scheduling field work to make efficient use of personnel and material resources. Cautions are given regarding common pitfalls of projects involving operations at remote sites, and means of avoidance are enumerated. A checklist of commonly used field equipment and supplies is provided. 相似文献
35.
Throughout its geomorphological history the South Pennine valley of Longdendale has been especially prone to landsliding and some ten landslide areas have been identified. These prove on analysis to be bedding plane slides with a strong degree of translation but often exhibiting non-circular rotational elements as well. Instability in the lower slopes has often led to cambering and valley bulging so that the slopes become deformed and slump earth flows developed at some sites. Several different types of landslide are examined in detail and by means of pollen analysis the slides are dated from the early postglacial to at least as recently as two thousand years B.P. although it has not yet been possible to decide when these slides started. The causes of sliding are identified, and comments are made upon.
- (a) The location of slip surfaces–which are frequently at the base of the Grindslow Shales above a sandstone aquifer.
- (b) The geomorphic processes which built up high pore-water pressures and steep pressure gradients in the past.
- (c) The effects of sliding on the development of hillslopes in the post-glacial period.
36.
Seasonal hydrological forecasts, or outlooks, can potentially provide water managers with estimates of river flows and water resources for a lead time of several months ahead. An experimental modelling tool for national hydrological outlooks has been developed which combines a hydrological model estimate of sub‐surface water storage across Britain with a range of seasonal rainfall forecasts to provide estimates of area‐wide hydrological conditions up to a few months ahead. The link is made between a deficit in sub‐surface water storage and a requirement for additional rainfall over subsequent months to enable sub‐surface water storage and river flow to return to mean monthly values. The new scheme is assessed over a recent period which includes the termination of the drought that affected much of Britain in the first few months of 2012. An illustration is provided of its use to obtain return‐period estimates of the ‘rainfall required’ to ease drought conditions; these are well in excess of 200 years for several regions of the country, for termination within a month of 1 April 2012, and still exceed 40 years for termination within three months. National maps of sub‐surface water storage anomaly show for the first time the current spatial variability of drought severity. They can also be used to provide an indication of how a drought situation might develop in the next few months given a range of possible future rainfall scenarios. © 2013 CEH/Crown and John Wiley & Sons, Ltd. 相似文献
37.
Marcio T. A. H. Muella Eurico R. de Paula Alan A. Monteiro 《Surveys in Geophysics》2013,34(2):233-251
This paper reports differences in the occurrence statistics of global positioning system (GPS) L-band scintillations at observational sites located in the inner regions of the northern and southern crests of the equatorial ionization anomaly. Ground-based GPS data acquired at the closed magnetically aligned stations of Manaus (3.1°S; 59.9°W; dip lat. 6.2°N) and Cuiabá (15.5°S; 56.1°W; dip. lat. 6.2°S), Brazil, from December 2001 to February 2007 are used in the analysis. The drift dynamics of Fresnel-scale ionospheric irregularities at the southern station of Cuiabá are also investigated. Only geomagnetically quiet days with the sum of daily Kp < 24 were used in the analysis statistics and in the irregularity drift studies. The results reveal a clear dependence of the scintillation occurrence with the solar activity, but there exists an asymmetry in the percentage of scintillation occurrence between the two stations throughout the period analyzed. The nocturnal occurrence of the scintillations over Cuiabá is predominantly larger than over Manaus, but this scenario seems to change with the decline in the solar activity (mainly during local post-midnight hours). A broad minimum and maximum in the scintillation occurrence appears to occur over both the stations, respectively, during the June solstice (winter) and December solstice (summer) months. The dynamics of the Fresnel-scale irregularities, as investigated from the estimations of the mean zonal drift velocities, reveals that the amplitude of the eastward drifts tends to reduce with the decline in the solar activity. The magnitude of the zonal drift velocities during the December solstice months is larger than during the equinoxes, with the differences being more pronounced at solar maximum years. Other relevant aspects of the observations, with complementary data from a low-latitude ionospheric model, are highlighted and discussed. 相似文献
38.
Dr. Dietrich H. Welte 《International Journal of Earth Sciences》1966,55(1):131-144
Zusammenfassung Proben eines limnischen Ölschiefers eozänen Alters wurden, nachdem die löslichen Kohlenwasserstoffe durch Extraktion entfernt worden waren, in einem Autoklaven während fünf Stunden auf Temperaturen zwischen 190–490° C erhitzt. Dabei bildete sich aus dem unlöslichen Kerogen neues, extrahierbares Material, das vergleichbar ist mit den Extrakten aus tiefversenktem Sedimentgestein. Der ursprüngliche Extrakt des Ölschiefers zeigte eine starke Bevorzugung der höheren, ungeradzahligen n-Paraffine. Die durch den thermischen Abbau neu gebildeten n-Paraffine zeigten ebenfalls eine Bevorzugung, die jedoch mit steigender Versuchstemperatur abnimmt und bei Temperaturen über 300° C erlischt. Der Verlust der Bevorzugung ist auf einen Verdünnungseffekt zurückzuführen.
Der Gewerkschaft Elwerath in Hannover, im besonderen Herrn Direktor Dr. A.Roll danke ich herzlich für die finanzielle Unterstützung, durch die die Anschaffung eines Gaschromatographen ermöglicht wurde, und für die Überlassung von Probenmaterial aus dem Gifhorner Trog.Der Deutschen Forschungsgemeinschaft bin ich für ihre großzügige personelle und finanzielle Hilfe ebenfalls zu großem Dank verpflichtet.Schließlich möchte ich mich noch bei meinen Mitarbeitern Frau U.Grütze und Herrn cand. geol. H.Wehhner bedanken, die einen großen Teil der Laboratoriumsarbeiten durchführten. 相似文献
Summary Samples of non marine oil shale of Eocene age have been extracted and the extract-free samples were heated for 5 hours in an autoclave at temperatures between 190°–490° C. By the temperature treatment new extractable matter has been formed, that is comparable to extracts of sediments which suffered great depth of burial. The original extract of the oil shale showed a strong predominance of the odd — numbered high molecular n-paraffins. The n-paraffins which were formed by the temperature treatment also showed an odd —predominance. This predominance, however, decreased with increasing temperature of the autoclave and disappeared above 300° C. The disappearance of the odd-predominance can be explained by a diluting effect.
Résumé Nous avons chauffé des échantillons de schistes petrolifères limnigues de l'éocène pentant 5 heures à des temperatures entre 190°–490° C après avoir eliminés les hydrocarbones solubles par extraction. Nous avons reçu du kérogène insoluble, un materiel de nouveau extractible. Ce materiel est comparable à des extraits de sédiments d'une grande profondeur. L'extrait primaire des schistes petrolifères montrait une préfération des n-paraffines impaires de haute séquence. Les paraffines développés par la dégradation thermique montraient de même une préfération. Mais elle diminue en montant les temperatures et disparait au dessus de 300° C. La perte de cette préfération est explicable par un effet de dilution.
190° 490° , . .
Der Gewerkschaft Elwerath in Hannover, im besonderen Herrn Direktor Dr. A.Roll danke ich herzlich für die finanzielle Unterstützung, durch die die Anschaffung eines Gaschromatographen ermöglicht wurde, und für die Überlassung von Probenmaterial aus dem Gifhorner Trog.Der Deutschen Forschungsgemeinschaft bin ich für ihre großzügige personelle und finanzielle Hilfe ebenfalls zu großem Dank verpflichtet.Schließlich möchte ich mich noch bei meinen Mitarbeitern Frau U.Grütze und Herrn cand. geol. H.Wehhner bedanken, die einen großen Teil der Laboratoriumsarbeiten durchführten. 相似文献
39.
Dr. R. Reiter Dr. R. Sladkovic Dr. H. -J. Kanter 《Meteorology and Atmospheric Physics》1987,37(2):114-128
Summary The importance of representative and long-term recordings of the trace gases SO2, NO
x
, and NO is explained. Recordings taken under different background conditions and, moreover, simultaneously at neighboring mountain stations, together with other meteorological parameters, are of special interest.The recording stations for the determination of the mentioned gases (a valley station at 740 m a.s.l., a nearby mountain station at 1780 m a.s.l.), the measuring methods, calibration procedures, and zero-air supply are described.The main part deals with the representation of consistent data of trace gases obtained at the two stations (NO only in the valley floor). Special attention was given not only to longterm trends but also to the seasonal and diurnal variations, and to the dependence of the gas concentrations on meteorological parameters. Only on the basis of such a parameterization, the time variations become understandable and the causes can be explained as well as possible. Finally, correlations between the concentrations of the different gas components are shown.With 15 Figures 相似文献
40.
We present a comparison of the zonal mean meridional circulations derived from monthly in situ data (i.e. radiosondes and
ship reports) and from the NCEP/NCAR reanalysis product. To facilitate the interpretation of the results, a third estimate
of the mean meridional circulation is produced by subsampling the reanalysis at the locations where radiosonde and surface
ship data are available for the in situ calculation. This third estimate, known as the subsampled estimate, is compared to
the complete reanalysis estimate to assess biases in conventional, in situ estimates of the Hadley circulation associated
with the sparseness of the data sources (i.e., radiosonde network). The subsampled estimate is also compared to the in situ
estimate to assess the biases introduced into the reanalysis product by the numerical model, initialization process and/or
indirect data sources such as satellite retrievals. The comparisons suggest that a number of qualitative differences between
the in situ and reanalysis estimates are mainly associated with the sparse sampling and simplified interpolation schemes associated
with in situ estimates. These differences include: (1) a southern Hadley cell that consistently extends up to 200 hPa in the
reanalysis, whereas the bulk of the circulation for the in situ and subsampled estimates tends to be confined to the lower
half of the troposphere, (2) more well-defined and consistent poleward limits of the Hadley cells in the reanalysis compared
to the in-situ and subsampled estimates, and (3) considerably less variability in magnitude and latitudinal extent of the
Ferrel cells and southern polar cell exhibited in the reanalysis estimate compared to the in situ and subsampled estimates.
Quantitative comparison shows that the subsampled estimate, relative to the reanalysis estimate, produces a stronger northern
Hadley cell (∼20%), a weaker southern Hadley cell (∼20–60%), and weaker Ferrel cells in both hemispheres. These differences
stem from poorly measured oceanic regions which necessitate significant interpolation over broad regions. Moreover, they help
to pinpoint specific shortcomings in the present and previous in situ estimates of the Hadley circulation. Comparisons between
the subsampled and in situ estimates suggest that the subsampled estimate produces a slightly stronger Hadley circulation
in both hemispheres, with the relative differences in some seasons as large as 20–30%. 6These differences suggest that the
mean meridional circulation associated with the NCEP/NCAR reanalysis is more energetic than observations suggest. Examination
of ENSO-related changes to the Hadley circulation suggest that the in situ and subsampled estimates significantly overestimate
the effects of ENSO on the Hadley circulation due to the reliance on sparsely distributed data. While all three estimates
capture the large-scale region of low-level equatorial convergence near the dateline that occurs during El Nino, the in situ
and subsampled estimates fail to effectively reproduce the large-scale areas of equatorial mass divergence to the west and
east of this convergence area, leading to an overestimate of the effects of ENSO on the zonal mean circulation.
Received: 16 September 1998 / Accepted: 22 April 1999 相似文献