Quasi-periodic accretion and gravitational waves from oscillating 'toroidal neutron stars' around a Schwarzschild black hole     

Olindo Zanotti  Luciano Rezzolla  José A. Font 《Monthly notices of the Royal Astronomical Society》2003,341(3):832-848

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The hermitage of Cerbaiolo (Tuscany,Italy): stability conditions and geomorphological characterization     

Laura Melelli  Corrado Cencetti  Manuela Cecconi  Luciano Faralli  Alessia Vecchietti  Vincenzo Pane 《Environmental Earth Sciences》2016,75(4):322

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List of papers from other journals     

Luciano Baresi  Sebastiano Colazzo  Luca Mainetti  Sandro Morasca 《Solar physics》1988,117(2):415-426

List of papers from other journals  相似文献   

1/f Fluctuations in geoelectrical signals observed in a seismic area of Southern Italy     

Marianna Balasco  Vincenzo Lapenna  Luciano Telesca   《Tectonophysics》2002,347(4)

Recent studies have shown that many natural systems display temporal fluctuations with long-range power-law correlations, suggesting a fractal geometry of the underlying dynamical system. Four geoelectrical time series, measured in a seismic area of Southern Italy, are investigated by means of spectral tools in order to evidence the existence of power-law correlations. Results show the scaling behaviour for all the signals recorded, pointing to the presence of fractal features expressing a long-term correlation with scaling exponents which indicate stabilizing mechanisms. Furthermore, our findings suggest an observational evidence of correlations between the variation of parameters describing the temporal fluctuations of geoelectrical signals and earthquakes that occurred in the area investigated.  相似文献   

Geometry and evolution of Holocene transgressive and regressive barriers on the semi-arid coast of NE Brazil     

Luciano Henrique de Oliveira Caldas  Josibel Gomes de Oliveira Jr  Walter Eugênio de Medeiros  Karl Stattegger  Helenice Vital 《Geo-Marine Letters》2006,26(5):249-263

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Complexity–entropy analysis of daily stream flow time series in the continental United States     

Francesco Serinaldi  Luciano Zunino  Osvaldo A. Rosso 《Stochastic Environmental Research and Risk Assessment (SERRA)》2014,28(7):1685-1708

Complexity–entropy causality plane (CECP) is a diagnostic diagram plotting normalized Shannon entropy \({\cal H}_S\) versus Jensen–Shannon complexity \({\cal C}_{JS}\) that has been introduced in nonlinear dynamics analysis to classify signals according to their degrees of randomness and complexity. In this study, we explore the applicability of CECP in hydrological studies by analyzing 80 daily stream flow time series recorded in the continental United States during a period of 75 years, surrogate sequences simulated by autoregressive models (with independent or long-range memory innovations), Theiler amplitude adjusted Fourier transform and Theiler phase randomization, and a set of signals drawn from nonlinear dynamic systems. The effect of seasonality, and the relationships between the CECP quantifiers and several physical and statistical properties of the observed time series are also studied. The results point out that: (1) the CECP can discriminate chaotic and stochastic signals in presence of moderate observational noise; (2) the signal classification depends on the sampling frequency and aggregation time scales; (3) both chaotic and stochastic systems can be compatible with the daily stream flow dynamics, when the focus is on the information content, thus setting these results in the context of the debate on observational equivalence; (4) the empirical relationships between \({\mathcal H}_S\) and \({\mathcal C}_{JS}\) and Hurst parameter H, base flow index, basin drainage area and stream flow quantiles highlight that the CECP quantifiers can be considered as proxies of the long-term low-frequency groundwater processes rather than proxies of the short-term high-frequency surface processes; (6) the joint application of linear and nonlinear diagnostics allows for a more comprehensive characterization of the stream flow time series.  相似文献   

Can Cassini detect a subsurface ocean in Titan from gravity measurements?     

Nicole J. Rappaport  Luciano Iess  Jonathan I. Lunine  J.W. Armstrong  Paolo Tortora  Paolo Racioppa 《Icarus》2008,194(2):711-720

Recent models of Titan's interior predict that the satellite contains an ocean of water and ammonia under an icy layer. Direct evidence for the presence of an ocean can be provided on the Cassini mission only by radio science determination of Titan Love number k₂. Simulations that use the five flybys T11, T22 T33, T45, and T68 (the latter two belonging to the extended mission) lead to the result that in the elastic case, where the Love number is real, k₂ will be determined with a one-sigma accuracy of 0.1. In the viscoelastic case, where k₂ is complex, the real and imaginary parts of k₂ will be determined with one sigma accuracies of 0.138 and 0.115, respectively. Ocean and oceanless models that include a viscoelastic rheology are built. In the viscoelastic case, there is a 93% probability to correctly predict the presence or absence of an ocean; this probability improves to 97% in the elastic case.  相似文献   

The role of the lowermost boundary conditions in the hydrological response of shallow sloping covers     

Alfredo Reder  Luca Pagano  Luciano Picarelli  Guido Rianna 《Landslides》2017,14(3):861-873

In many areas of the world, slopes covered by shallow unsaturated non-plastic soil layers experience rainfall-induced landslides causing heavy damage and casualties every year. Landslide occurrence depends on the amount of water infiltrated and stored. Among the contributing factors are the hydraulic conditions at the lowermost boundary, a feature that is often disregarded. The paper focuses on this topic, presenting the results of some laboratory and numerical experiments on ash-pumice interfaces. A strategy is then proposed for selecting the lowermost boundary condition, and some studies are carried out to compare the results obtained with the proposed solution and other more popular ones.  相似文献   

Space–time correlation of earthquakes     

Patrizia Tosi  Valerio De Rubeis  Vittorio Loreto  Luciano Pietronero 《Geophysical Journal International》2008,173(3):932-941

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The filling of the lunar mare basins     

Luciano B. Ronca 《Earth, Moon, and Planets》1973,7(1-2):239-248

The surface of each mare is not a homogeneous geomorphological unit, but displays a variety of geomorphologies. The interpretation of this phenomenon depends on the assumptions one is willing to accept. If the filling of the mare basins occurred relatively slowly, then the geomorphologies are a time function and indicate a time span of not less than three quarters of a billion years between the beginning and the end of the mare filling activity. If, on the other hand, the maria were filled by lava immediately after the basin formation and remained liquid for a relatively long time during which the extensive bombardment stopped, then the different morphologies indicate vagaries in the final stages of the bombardment and of the cooling history.Paper dedicated to Professor Harold C. Urey on the occasion of his 80th birthday on 29 April, 1973.Research conducted at the Lunar Science Institute which is operated by the Universities Space Research Association under Contract No. NSR 09-051-001 with the National Aeronautics and Space Administration. This paper is Lunar Science Institute Contribution No. 109.  相似文献