Mouvements actuels des blocs tectoniques dans l’arc Bético-Rifain à partir des mesures GPS entre 1999 et 2005     

Abdelilah Tahayt  Taoufik Mourabit  Alexis Rigo  Kurt L. Feigl  Abdelali Fadil  Simon McClusky  Robert Reilinger  Mostafa Serroukh  Abdelouahed Ouazzani-Touhami  Driss Ben Sari  Philippe Vernant   《Comptes Rendus Geoscience》2008,340(6):400-413

GPS velocities and seismicity across the Betic–Rif Arc structural domains (Morocco and Iberia) provide a basis to evaluate present-day seismotectonic processes between different deformation belts. The results show asymmetric movements in the complex Alboran system accommodating the convergence between the African (Nubian) and Eurasian plates. While the Betic Mountains are attached to Iberia, moving toward the southeast with respect to Africa, the Rif is divided into three blocks with distinct displacements relative to Nubia: (1) the Tangier block moving southeastward, (2) the Central Rif block moving SSW, and (3) the Oriental Rif block undergoing clockwise rotation. GPS-derived motions decrease in rate from the Rif nappes complex to the foreland.  相似文献   

Apports de la gravimétrie dans la caractérisation des structures éffondrées dans la région de Nebeur (Nord Ouest de la Tunisie)     

Imen Hamdi Nasr  Abdelhamid Ben Salem  Mohamed Hedi Inoubli  Jamel Dhifi  R. Alouani  abdelhak Chaqui  Vincent Perthuisot 《Swiss Journal of Geoscience》2008,101(1):17-27

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Postglacial relative sea‐level observations from Ireland and their role in glacial rebound modelling     

Anthony J. Brooks  Sarah L. Bradley  Robin J. Edwards  Glenn A. Milne  Ben Horton  Ian Shennan 《第四纪科学杂志》2008,23(2):175-192

The British Isles have been the focus of a number of recent modelling studies owing to the existence of a high‐quality sea‐level dataset for this region and the suitability of these data for constraining shallow earth viscosity structure, local to regional ice sheet histories and the magnitude/timing of global meltwater signals. Until recently, the paucity of both glaciological and relative sea‐level (RSL) data from Ireland has meant that the majority of these glacial isostatic adjustment (GIA) modelling studies of the British Isles region have tended to concentrate on reconstructing ice cover over Britain. However, the recent development of a sea‐level database for Ireland along with emergence of new glaciological data on the spatial extent, thickness and deglacial chronology of the Irish Ice Sheet means it is now possible to revisit this region of the British Isles. Here, we employ these new data to constrain the evolution of the Irish Ice Sheet. We find that in order to reconcile differences between model predictions and RSL evidence, a thick, spatially extensive ice sheet of ～600–700 m over much of north and central Ireland is required at the LGM with very rapid deglaciation after 21 k cal. yr BP. Copyright © 2007 John Wiley & Sons, Ltd.  相似文献   

Do emissions and income have a common trend? A country-specific,time-series,global analysis, 1970–2008     

Paolo Paruolo  Ben Murphy  Greet Janssens-Maenhout 《Stochastic Environmental Research and Risk Assessment (SERRA)》2015,29(1):93-107

This paper analyzes the relation between income and emissions in the period 1970–2008, for all world countries. We consider time-series of CO₂, SO₂ and GWP100, and use Vector Autoregressive models that allow for nonstationarity and cointegration. At 5 % significance level, income and emissions are found to be driven by unrelated random walks with drift (respectively by a common random walk with drift) in about 70 % (respectively 25 %) of cases; in the remaining cases the variables are trend-stationary. Tests of Granger-causality show evidence of both directions of causality. For the case of unrelated stochastic trends, we almost never find income driving emissions, as predicted by a consumption-function interpretation. These causality results and the absence of a common trend challenge the main implications of the Environmental Kuznets Curve, namely that the dominant direction of causality should be from income to emissions, and that for increasing levels of income, emissions should tend to decrease.  相似文献   

Determination of the Interception Volume of Storm Water Based on the Contaminants Transport in Storm Sewers          下载免费PDF全文

Cuiyun Liu  Wu Che  Ben Tan 《洁净——土壤、空气、水》2015,43(11):1495-1500

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Investigating Spectral Characteristics and Spatial Variability of Dissolved Organic Matter Leached from Wetland in Semi‐Arid Region to Differentiate Its Sources and Fate          下载免费PDF全文

Xu‐Jing Guo  Qiang Li  Jin‐Yuan Jiang  Ben‐Lin Dai 《洁净——土壤、空气、水》2014,42(8):1076-1082

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Atomic data and electron-impact broadening effect in DO white dwarf atmospheres: Si vi     

R. Hamdi  N. Ben Nessib  N. Milovanovi&#;  L.&#;. Popovi&#;  M. S. Dimitrijevi&#;  S. Sahal-Bréchot 《Monthly notices of the Royal Astronomical Society》2008,387(2):871-882

Energy levels, electric dipole transition probabilities and oscillator strengths in five times ionized silicon have been calculated in intermediate coupling. The present calculations were carried out with the general purpose atomic structure program superstructure . The relativistic corrections to the non-relativistic Hamiltonian are taken into account through the Breit–Pauli approximation. We have also introduced a semi-empirical correction [term energy corrections (TEC)] for the calculation of the energy levels. These atomic data are used to provide semiclassical electron-, proton- and ionized helium-impact linewidths and shifts for 15 Si  vi multiplet. Calculated results have been used to consider the influence of Stark broadening for DO white dwarf atmospheric conditions.  相似文献   

论核工程选址中的弥散地震   总被引：2，自引：1，他引：1       下载免费PDF全文

张裕明  时振梁  常向东  周本刚  环文林  董瑞树  冉洪流 《地震地质》2004,26(4):727-732

弥散地震评价是核工程选址中地震安全性评价的重要内容之一。文中在分析弥散地震涵义的基础上,论述了弥散地震评价中地震构造区划分的原则和依据、弥散地震确定的方法和技术途径等关键性技术内容  相似文献   

论发震构造特性在潜在震源区参数确定中的应用   总被引：6，自引：0，他引：6       下载免费PDF全文

周本刚 《地震地质》2004,26(4):750-760

发震构造特性是潜在震源区划分及其地震年发生率确定的重要依据。潜在震源区除了反映“未来具有发生破坏性地震的地区”的内涵外,还应反映高震级档地震具有相似复发特征的涵义。由于在地震活动性参数统计单元内,有一些具有不同本底地震的活动构造块体,为更好地反映地震活动的空间不均匀性,考虑潜在震源区的三级划分是有必要的。通过分析潜在震源区内高震级档地震的复发特征,计算预测时段内潜在震源区的高震级档地震的发震概率,采用预测时段内概率等效转换获得地震年平均发生率的方法,有助于在中国地震危险性分析框架内考虑潜在震源区的强震复发特性。另外,文中还对潜在震源区内特征地震次级震级档频度不足的特性和发震构造上强震非均匀性在地震危险性分析中的应用问题进行了探讨  相似文献   

Sediment resuspension in tidally dominated coastal environments: new insights into the threshold for initial movement   总被引：2，自引：1，他引：1  

Yang Yang  Ya Ping Wang  Shu Gao  Xiao Hua Wang  Ben Wei Shi  Liang Zhou  Dan Dan Wang  Chen Dai  Gao Cong Li 《Ocean Dynamics》2016,66(3):401-417

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