Uncertainty assessment and analysis of the calibrated parameter values of an urban storm water quality model   总被引：1，自引：0，他引：1  

Eric Gaume  Jean-Pierre Villeneuve  Michel Desbordes 《Journal of Hydrology》1998,210(1-4):38-50

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Flowage differentiation: Limitation of the “Bagnold effect” to the narrow intrusions     

Michel Barrière 《Contributions to Mineralogy and Petrology》1976,55(2):139-145

The Bagnold effect, the most important in the flowage differentiation, is practically inoperative in porphyritic rocks in the case of large dykes and pipes with a width or a diameter over 100 meters. For these large channels, the magmatic differentiation between the core and the walls is not related to the forced magmatic flow, but should be ascribed to other mechanisms: crystal settling, natural convection, synchronous injection of already differentiated materials.  相似文献   

Observations d'ondesS a de typeSH     

Michel Cara 《Pure and Applied Geophysics》1976,114(1):141-157

Résumé Nous observons fréquemment à l'aide de stations longues périodes de l'I.P.G. de Paris, une phase sismique S _a arrivant en tête de l'onde de Love et dont la période est de 30 à 40 s. L'analyse, par filtrage multiple nurnérique, de 44 enregistrements de séismes superficiels nous permet de dégager le caractère spécifique de la composanteSH du mouvement au sol au passage de l'ondeS _a et de remarquer que son mode de propagation peut s'expliquer par l'interférence des premiers harmoniques de l'onde de Love; la confrontation de l'amplitude observée pour la phaseS _a avec des résultats théoriques portant sur le niveau d'excitation des harmoniques de l'onde de Love est satisfaisante, même pour des foyers superficiels.La proximité des courbes de vitesse de groupe de ces harmoniques entre 30 et 40 s ne permettant pas de séparer les différents modes lors de l'analyse de l'onde en une ou deux stations, nous montrons la nécessité d'accroître la connaissance de la forme spatiale de l'onde et de développer des methodes fines d'analyse en nombre d'onde, en vue d'un apport d'informations sur l'asthénosphère et le manteau supérieur.  相似文献   

Sur un pendule horizontal equipe d’un capteur de deplacement A capacite variable     

Michel van Ruymbeke 《Journal of Geodesy》1976,50(3):281-290

The VERBAANDERT-MELCHIOR HORIZONTAL PENDULUM, using a capacitive transducer for the tilt measurements, is described. The output sensitivity is about 100 microvolt for 0.001”. Damping is produced by the air-drag during the motion of the pendulum arm. Results of tidal analysis for two one month fifty-days recording in the Underground Laboratory of Geodynamics at Walferdange (Grand-Duchy of Luxembourg) are also given.  相似文献   

Elimination of ²⁴⁸Cm as a possible progenitor of carbonaceous chondrite fission xenon     

D.A. Leich  S. Niemeyer  M.C. Michel 《Earth and Planetary Science Letters》1977,34(2):197-208

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Relations entre kink-bands decametriques et fractures de socle dans l'Hercynien des Monts d'Ougarta (Sahara Occidental,Algerie)     

Pierre Collomb  Michel Donzeau 《Tectonophysics》1974,24(3):213-242

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Contrasting patterns of precipitation seasonality during the Holocene in the south‐ and north‐central Mediterranean     

Michel Magny  Odile Peyron  Laura Sadori  Elena Ortu  Giovanni Zanchetta  Boris Vannière  Willy Tinner 《第四纪科学杂志》2012,27(3):290-296

Pollen‐based quantitative estimates of seasonal precipitation from Lake Pergusa and lake‐level data from Lake Preola in Sicily (southern Italy) allow three successive periods to be distinguished within the Holocene: an early Holocene period before ca. 9800 cal a BP with rather dry climate conditions in winter and summer, a mid‐Holocene period between ca. 9800 and 4500 cal a BP with maximum winter and summer wetness, and a late Holocene period after 4500 cal a BP with declining winter and summer wetness. This evolution observed in the south‐central Mediterranean shows strong similarities to that recognized in the eastern Mediterranean. But, it contrasts with that reconstructed in north‐central Italy, where the mid‐Holocene appears to be characterized by a winter (summer) precipitation maximum (minimum), while the late Holocene coincided with a decrease (increase) in winter (summer) precipitation. Maximum precipitation at ca. 10 000–4500 cal a BP may have resulted from (i) increased local convection in response to a Holocene insolation maximum at 10 000 cal a BP and then (ii) the gradual weakening of the Hadley cell activity, which allowed the winter rainy westerlies to reach the Mediterranean area more frequently. After 4500 cal a BP, changes in precipitation seasonality may reflect non‐linear responses to orbitally driven insolation decrease in addition to seasonal and inter‐hemispheric changes of insolation. Copyright © 2011 John Wiley & Sons, Ltd.  相似文献   

Global estimation variance: Formulas and calculation     

Michel David 《Mathematical Geology》1986,18(7):697

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Evaluating parameter effects in a DEM ‘burning’ process based on land cover data     

Augusto C. V. Getirana  Marie‐Paule Bonnet  Jean‐Michel Martinez 《水文研究》2009,23(16):2316-2325

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Temperature variability in the Bay of Biscay during the past 40 years,from an in situ analysis and a 3D global simulation     

S. Michel  A.-M. Treguier  F. Vandermeirsch 《Continental Shelf Research》2009,29(8):1070-1087

A global in situ analysis and a global ocean simulation are used jointly to study interannual to decadal variability of temperature in the Bay of Biscay, from 1965 to 2003. A strong cooling is obtained at all depths until the mid-1970's, followed by a sustained warming over ～30 years. Strong interannual fluctuations are superimposed on this slow evolution. The fluctuations are intensified at the surface and are weakest at ～500 m. A good agreement is found between the observed and simulated temperatures, in terms of mean values, interannual variability and time correlations. Only the decadal trend is significantly underestimated in the simulation. A comparison to satellite sea surface temperature (SST) data over the last 20 years is also presented. The first mode of interannual variability exhibits a quasi-uniform structure and is related to the inverse winter North Atlantic Oscillation (NAO) index. Regarding the vertical structure, most cool and warm anomalies are generated at the surface, with the strongest ones penetrating down to 700 m and lasting up to 5 years. The complete heat budget from 1965 to 2004 is presented, including the contributions of vertical transport, freshwater flux and surface elevation. Interannual anomalies are mainly generated by the surface heat flux, while oceanic transports may become more important at longer time scales.  相似文献