Lava stones from Neapolitan volcanic districts in the architecture of Campania region,Italy     

Alessio Langella  Domenico Calcaterra  Piergiulio Cappelletti  Abner Colella  Maria Pia D’Albora  Vincenzo Morra  Maurizio de Gennaro 《Environmental Earth Sciences》2009,59(1):145-160

Results of a research carried out on the lavas from Campi Flegrei and Somma-Vesuvius volcanic districts are reported here. The lavas have been widely employed, since Roman age, in several important monumental buildings of the Campania region, mainly in the town of Naples and in its province. They are classified as trachytes (Campi Flegrei products), tephri-phonolites and phono-tephrites (Somma-Vesuvius complex) from a petrographical point of view. Sampling was carried out from well-known exploitation districts. A substantial chemical difference between the products of the two sectors was confirmed, while petrophysical characterization evidenced similarity among the two different materials, although some differences were recorded even in samples coming from the same exploitation site.  相似文献   

Insights on the spreading of the Tyrrhenian Sea from the magnetic anomaly pattern     

Giovanni Florio  Maurizio Fedi  Federico Cella 《地学学报》2011,23(2):127-133

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Geodemographics as a tool for targeting neighbourhoods in public health campaigns   总被引：2，自引：1，他引：1  

Jakob Petersen  Maurizio Gibin  Paul Longley  Pablo Mateos  Philip Atkinson  David Ashby 《Journal of Geographical Systems》2011,13(2):173-192

Geodemographics offers the prospects of integrating, modelling and mapping health care needs and other health indicators that are useful for targeting neighbourhoods in public health campaigns. Yet reports about this application domain has to date been sporadic. The purpose of this paper is to examine the potential of a bespoke geodemographic system for neighbourhood targeting in an inner city public health authority, Southwark Primary Care Trust, London. This system, the London Output Area Classification (LOAC), is compared to six other geodemographic systems from both governmental and commercial sources. The paper proposes two new indicators for assessing the performance of geodemographic systems for neighbourhood targeting based on local hospital demand data. The paper also analyses and discusses the utility of age- and sex standardisation of geodemographic profiles of health care demand.  相似文献   

An approach to <Emphasis Type="Italic">DEM</Emphasis> analysis for landform classification based on local gradients     

Sergio Camiz  Maurizio Poscolieri 《Earth Science Informatics》2018,11(2):287-305

In this paper we propose an exploratory methodology, devoted to classify the pixels of a Digital Elevation Model (DEM), to be used as a morphometric basis for studies in other frameworks. The aim is to classify the terrain units according to eight topographical local gradients, computed as differences between each pixel and the eight surrounding ones. A partition of the pixels into homogeneous classes is carried out, emphasizing different details of the terrain units characteristics. Each class is described by a complete set of statistics of terrain attributes, including elevation, slope, and aspect, and graphical tools are used to ease the understanding of the partition. In addition, appropriate colours are attributed to each class, in order to build a thematic map that may simulate a three-dimensional effect. They are defined by computing their hue and saturation according to each class mean slope and aspect, respectively. Applications to Mount Soratte (Italy) and Cephalonia island (Greece) show how the results may be successfully used to describe in different ways the morphometric structure of the terrain under study and provide appropriate graphical representations.  相似文献   

The Butterfly Diagram Fine Structure     

Maurizio Ternullo 《Solar physics》2007,240(1):153-164

The present work describes the evolution of the sunspot zone in cycles 20, 21, and 22. In each cycle, and in both hemispheres, the equatorward drift of the spot zone “center of mass” results from the alternation of five or six prograde (namely, equatorward) segments, with other stationary or poleward segments. The duration of the stationary/retrograde phases (resulting from averaging data pertaining to the six semicycles examined here) amounts to ≈36% of the total duration of these semicycles. In the prograde phases, the drift rate is almost twice the “traditional” equatorward rate, resulting only from the extreme positions of the spot zone center of mass (at the beginning and at the end of the cycle). If there were no stationary/retrograde phases, the cycle duration would be half the actual one. We conclude that the retrograde phases should not be regarded as accidental; rather, they are essential features of the 11-year cycle.  相似文献   

The speciation of ions in Tiber river estuary waters     

Frank J. Millero  Giuseppe Macchi  Maurizio Pettine 《Estuarine, Coastal and Shelf Science》1981,13(5):517-534

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The relativistic precession of the orbits     

Maurizio M. D’Eliseo 《Astrophysics and Space Science》2012,342(1):15-18

The relativistic precession can be quickly inferred from the nonlinear polar orbit equation without actually solving it.  相似文献   

Global and Local Multiscale Analysis of Magnetic Susceptibility Data   总被引：3，自引：0，他引：3  

Maurizio?FediEmail author 《Pure and Applied Geophysics》2003,160(12):2399-2417

Geophysical well-logs often show a complex behavior which seems to suggest a multifractal nature. Multifractals are highly intermittent signals, with distinct active bursts and passive regions which cannot be satisfactorily characterized in terms of just second-order statistics. They need a higher-order statistical analysis. In contrast with monofractals which have a homogeneous scaling, multifractals may include singularities of many types. Here we describe how a multiscale analysis can be used to describe the magnetic susceptibility data scaling properties for a deep well (KTB, Germany), down to about 9000 m. A multiscale analysis describes the local and global singular behavior of measures or distributions in a statistical fashion. The global analysis allows the estimation of the global repartition of the various Holder exponents. As such, it leads to the definition of a spectrum, D(), called the singularity spectrum. The local analysis is related to the possibility of estimating the Lipschitz regularity locally, i.e., at each point of the support of a multifractal signal. The application of both approaches to the KTB magnetic susceptibility data shows a meaningful correlation between the sequence of Holder exponents vs. depth and the lithological units. The Holder exponents reach the highest values for gneiss units, intermediate ones for amphibolite units and the lowest values for variegated units. Faults are found to correspond to changes for H also when they are of intra-lithological type.  相似文献   

A geological transect from Kun Lun to Karakorum (Sinkiang, China): the western termination of the Tibetan Plateau. Preliminary note     

Maurizio Gaetani  Guido Gosso  Ugo Pognante 《地学学报》1990,2(1):23-30

A geological-geophysical expedition (Ev-K2–CNR 1988) visited the area from West Kun Lun to Karakorum (K2–Gasherbrum). Seven tectonic units including sedimentary, magmatic and metamorphic rocks were distinguished in this area; the northernmost are suggested to belong to the Kun Lun and Qiangtang Microplates. The sedimentary sequence of Shaksgam is proved to extend from the Permian to the Jurassic, with Carboniferous and Cretaceous ages more doubtful. This sequence shows intermediate affinities between the Karakorum and the Qiangtang. The two southernmost units belong to the Karakorum Microplate. The Karakorum Fault Zone comprises a complex pattern of faults and thrusts, with brittle deformation and uplifting of granitoid bodies.  相似文献   

An Observational Method to Prevent Cross-Talk and Calibrate Mof-Based Instruments     

Maria Magrì  Maurizio Oliviero  Giuseppe Severino 《Solar physics》2005,232(1-2):159-170

We present a method for calibrating every instrument working with magneto-optical filter (MOF) technology, in order to take into account the effect in the observations due to the aging of the vapour cells. The method allows the evaluation of some characteristics of the transmission profile by modelling the blue and/or the red line intensity images acquired with the MOF system. In particular, it reveals the presence of unwanted spurious transmissions and prevents cross-talk between the intensity and velocity fluctuations. The method also gives information about the position of the “working point” of the instrument, i.e. the average wavelength position of its transmission profile, which is necessary for estimating the right solar atmospheric layer observed by the MOF. This analysis is powerful and fast: applied before every observing campaign, it enables setting Q the most suitable value for the cell temperature, which is one of the parameters that controls the MOF transmission profile.  相似文献