Book ChapterDOI
Upper Crustal Velocity Structure in Slovenia from Rayleigh Wave Dispersion
TLDR
In this article, the authors used the broad band digital records of earthquakes which recently occurred in Slovenia and neighbouring regions to extract the group velocity of the fundamental mode of Rayleigh waves, using frequency-time analysis (FTAN).Abstract:
The inversion of surface-wave dispersion curves can provide information on the average elastic properties of the upper crustal layers that are usually poorly sampled by body waves. The broad band digital records of earthquakes which recently occurred in Slovenia and neighbouring regions are used to extract the group velocity of the fundamental mode of Rayleigh waves, using frequency-time analysis (FTAN). The obtained dispersion curves permit a good resolution for the velocity and the thickness of the upper crust. The thickness of the uppermost sedimentary layer varies between 4 and 6 km and its shear-wave velocity is less than 3 km/s. The lower sedimentary layer is 7 to 9 km thick and its shear-wave velocity ranges from about 3.05 km/s in eastern Slovenia, to about 3.25 km/s in western Slovenia. The shear-wave velocity in the crystalline layer is around 3.5–3.7 km/s in the eastern part, while in the western part it reaches a rather high value of about 3.85 km/s.read more
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Journal ArticleDOI
Group velocity tomography and regionalization in Italy and bordering areas
TL;DR: In this article, the authors compute average dispersion relations over a 1°×1° grid, and, since the lateral resolving power of the data set is of about 200 kilometres, group the cells of the grid according to their dispersion curves.
Book ChapterDOI
Seismic Zoning of Slovenia Based on Deterministic Hazard Computations
TL;DR: In this paper, a deterministic approach based on the computation of complete synthetic seismograms is used to estimate the seismic hazard of the territory of Slovenia using the catalogues of earthquakes and fault plane solutions for Slovenia and surrounding regions.
Journal ArticleDOI
A Contribution to Seismic Hazard Assessment in Croatia from Deterministic Modeling
TL;DR: In this article, some of the elements of regional seismic hazard in Croatia are assessed by computing synthetic accelerograms at a predetermined set of sites, which consists of structural models, parameters of seismic sources, and an updated earthquake catalog.
Journal ArticleDOI
Tomographic Study of the Adriatic Plate
TL;DR: In this paper, a detailed and reliable lithospheric model of the Adriatic Plate was derived using both surface-wave tomography and body-waves tomography, consistent with the thus far available data.
Journal ArticleDOI
3-D Velocity Structure of the Middle and Upper Crust in the Yunnan Region, China
Zheng-qin He,Tai-lan Ye,Wei Su +2 more
TL;DR: Using short-period (1-18 s) surface wave data recorded by 23 stations of the Yunnan Digital Seismic Network of China, this paper determined phase velocities of the fundamental Rayleigh wave along 209 paths by the two-station narrowband filtering and cross-correlation method, followed by an inversion for phase velocity distributions at various periods using the Ditmar-Yanovskaya method.
References
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Book
Genetic algorithms in search, optimization, and machine learning
TL;DR: In this article, the authors present the computer techniques, mathematical tools, and research results that will enable both students and practitioners to apply genetic algorithms to problems in many fields, including computer programming and mathematics.
Genetic algorithms in search, optimization and machine learning
TL;DR: This book brings together the computer techniques, mathematical tools, and research results that will enable both students and practitioners to apply genetic algorithms to problems in many fields.
Journal ArticleDOI
Free software helps map and display data
Paul Wessel,Walter H. F. Smith +1 more
TL;DR: The Generic Mapping Tools (GMT) is introduced, which is a free, public domain software package that can be used to manipulate columns of tabular data, time series, and gridded data sets and to display these data in a variety of forms ranging from simple x-y plots to maps and color, perspective, and shaded-relief illustrations.
Journal ArticleDOI
Traveltimes for global earthquake location and phase identification
Brian Kennett,E. R. Engdahl +1 more
TL;DR: The Iasp91 traveltime tables as mentioned in this paper are derived from a radially stratified velocity model which has been constructed so that the times for the major seismic phases are consistent with the reported times for events in the catalogue of the International Seismological Centre (ISC) for the period 1964-1987.
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Genetic Algorithms and Simulated Annealing
TL;DR: A detergent composition mainly for automatic laundering machines which comprises, on the basis of 100 parts by weight of total composition, at least 60 parts of soap and no more than 10 parts of a mixture of surfactants which impart an excellent detergent ability and foam control even in very soft waters and non-polluting properties.