Surveying the sky with the Arcminute MicroKelvin Imager: expected constraints on galaxy cluster evolution and cosmology     

Rüdiger Kneissl  Michael E. Jones  Richard Saunders  Vincent R. Eke  Anthony N. Lasenby  Keith Grainge  Garret Cotter 《Monthly notices of the Royal Astronomical Society》2001,328(3):783-794

We discuss prospects for cluster detection via the Sunyaev–Zel'dovich (SZ) effect in a blank field survey with the interferometer array, the Arcminute MicroKelvin Imager (AMI). Clusters of galaxies selected in the SZ effect probe cosmology and structure formation with little observational bias, because the effect measures integrated gas pressure directly, and does so independently of cluster redshift.
We use hydrodynamical simulations in combination with the Press–Schechter expression to simulate SZ cluster sky maps. These are used with simulations of the observation process to gauge the expected SZ cluster counts. Even with a very conservative choice of parameters we find that AMI will discover at least several tens of clusters every year with     the numbers depend on factors such as the mean matter density, the density fluctuation power spectrum and cluster gas evolution. The AMI survey itself can distinguish between these to some degree, and parameter degeneracies are largely eliminated given optical and X-ray follow-up of these clusters; this will also permit direct investigation of cluster physics and what drives the evolution.  相似文献   

Weather types across the Caribbean basin and their relationship with rainfall and sea surface temperature     

Vincent Moron  Isabelle Gouirand  Michael Taylor 《Climate Dynamics》2016,46(1-2):601-617

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Subseasonal-to-interannual variability of rainfall over New Caledonia (SW Pacific)     

Vincent Moron  Renaud Barbero  Andrew W. Robertson 《Climate Dynamics》2016,46(7-8):2449-2468

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Capability of a regional climate model to simulate climate variables requested for water balance computation: a case study over northeastern France     

Damien Boulard  Thierry Castel  Pierre Camberlin  Anne-Sophie Sergent  Nathalie Bréda  Vincent Badeau  Aurélien Rossi  Benjamin Pohl 《Climate Dynamics》2016,46(9-10):2689-2716

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Mesoscale analysis of failure in quasi‐brittle materials: comparison between lattice model and acoustic emission data          下载免费PDF全文

David Grégoire  Laura Verdon  Vincent Lefort  Peter Grassl  Jacqueline Saliba  Jean‐Pierre Regoin  Ahmed Loukili  Gilles Pijaudier‐Cabot 《国际地质力学数值与分析法杂志》2015,39(15):1639-1664

The purpose of this paper is to analyse the development and the evolution of the fracture process zone during fracture and damage in quasi‐brittle materials. A model taking into account the material details at the mesoscale is used to describe the failure process at the scale of the heterogeneities. This model is used to compute histograms of the relative distances between damaged points. These numerical results are compared with experimental data, where the damage evolution is monitored using acoustic emissions. Histograms of the relative distances between damage events in the numerical calculations and acoustic events in the experiments exhibit good agreement. It is shown that the mesoscale model provides relevant information from the point of view of both global responses and the local failure process. © 2015 The Authors. International Journal for Numerical and Analytical Methods in Geomechanics published by John Wiley & Sons Ltd.  相似文献   

Stalactite drip-water monitoring and tracer tests approach to assess hydrogeologic behavior of karst vadose zone: case study of Han-sur-Lesse (Belgium)     

Amaël Poulain  Gaëtan Rochez  Isabelle Bonniver  Vincent Hallet 《Environmental Earth Sciences》2015,74(12):7685-7697

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SARAL/AltiKa Global Statistical Assessment and Cross-Calibration with Jason-2     

Pierre Prandi  Sabine Philipps  Vincent Pignot  Nicolas Picot 《Marine Geodesy》2015,38(3):297-312

The CNES/ISRO mission SARAL/AltiKa was successfully launched on 25 February 2013. It reached its nominal orbit on 13 March 2013. AltiKa is the first altimeter using the Ka-band frequency. This article presents the results of the calibration and validation activities perfromed on the first year of the SARAL/AltiKa mission. The main objective of the article is to assess the SARAL/AltiKa data quality and to estimate the altimeter system performance using GDR products. To achieve this goal, we present mono-mission metrics and compare them with Jason-2 over the same period. Even if these missions do not have the same ground track, precise comparisons are still possible. They allow assessing parameter discrepancies and SSH consistency between both missions in order to detect geographically correlated biases, jumps or drifts. These results show that SARAL/AltiKa data quality is excellent: ocean data coverage is greater than 99.5%, standard deviation at cross-overs is 5.4 cm. The mission therefore fulfills the requirements of high precision altimetry and can be used (in conjunction with Jason-2) to monitor the global mean sea level, ensuring the continuity of the record over ERS/Envisat historical ground track. Possible improvements and open issues are also identified, foreseeing an even better mission performance.  相似文献   

A high-sensitivity GPS receiver carrier-tracking loop design for high-dynamic applications   总被引：1，自引：0，他引：1  

Xinlong Wang  Xinchun Ji  Shaojun Feng  Vincent Calmettes 《GPS Solutions》2015,19(2):225-236

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INFORMATION THEORY AND SEQUENCES OF LAND USE: AN APPLICATION     

Vincent B. Robinson 《The Professional geographer》1978,30(2):174-179

This paper addresses the question of how far into the past previous land-use patterns provide significant information concerning present or future patterns. The provision of information is viewed as a reduction in uncertainty. An information-theoretic approach that permits both statistical and graphical analysis is suggested. Application of this method to the analysis of land-use change in three townships on the fringe of Akron, Ohio suggests that, to a varying degree, the processes of change are first-order Markov processes.  相似文献   

Late Aptian long‐lived glacio‐eustatic lowstand recorded on the Arabian Plate     

Florian Maurer  Frans S.P. van Buchem  Gregor P. Eberli  Bernard J. Pierson  Madeleine J. Raven  Poul‐Henrik Larsen  Moujahed I. Al‐Husseini  Benoit Vincent 《地学学报》2013,25(2):87-94

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