ALBERT — All Library Books, journals and Electronic Records Telegrafenberg

1

Digitale Medien

Migration of seismic data (1994)

Bonomi, Ernesto ; Cabitza, Gabriella

Springer

Journal of statistical physics 76 (1994), S. 703-723

zur Merkliste hinzufügen auf der Merkliste

Details

ISSN: 1572-9613

Schlagwort(e): Seismology ; migration ; scalar wave equation ; parallel computing

Quelle: Springer Online Journal Archives 1860-2000

Thema: Physik

Notizen: Abstract Prospecting for oil and gas resources poses the problem of determining the geological structure of the earth's crust from indirect measurements. Seismic migration is an acoustic image reconstruction technique based on the inversion of the scalar wave equation. Extensive computation is necessary before reliable information can be extracted from large sets of recorded data. In this paper a collection of “industrial” migration techniques, each giving rise to a data parallel algorithm, is outlined. Computer simulations on synthetic seismic data illustrate the problem and the approach.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/BF02188682

Permalink

	Standort	Signatur	Erwartet	Verfügbarkeit

Andere fanden auch interessant ...

Artikel (Nationallizenzen)

Volltext

2

Digitale Medien

Solution of the axisymmetric inverse problem by higher-order line doublets (1994)

Zedan, M. F.

Chichester : Wiley-Blackwell

International Journal for Numerical Methods in Fluids 18 (1994), S. 415-432

zur Merkliste hinzufügen auf der Merkliste

Details

ISSN: 0271-2091

Schlagwort(e): Aerodynamics ; Aerodynamic design ; Inverse problems ; Body shaping ; Engineering ; Engineering General

Quelle: Wiley InterScience Backfile Collection 1832-2000

Thema: Maschinenbau

Notizen: The axial singularity inverse method for designing bodies of revolution has been improved by using higher-order doublet elements. The performance of the method for various element orders and other solution parameters is presented in detail. The results indicate that the method is generally more robust, less sensitive to insets and has a better-conditioned coefficient matrix compared with the source method of the same order. The condition number of the matrix is shown to increase with the thickness of the body, the order of the method, the number of elements and the degree of stretching of the node distribution. In general, good performance is attained for most bodies even with ƒr as low as 2 by using 10-12 second-order doublet elements with insets greater than 0.02L from rounded ends. Increasing the insets to 0.06L appears to improve the accuracy of the method for most bodies but slows its convergence.

Zusätzliches Material: 9 Ill.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1002/fld.1650180406

Permalink

	Standort	Signatur	Erwartet	Verfügbarkeit

Andere fanden auch interessant ...

Artikel (Nationallizenzen)

Volltext

3

Unbekannt

Hypocentre location: Genetic algorithms incorporating problem-specific information (1994)

S. D. Billings ; B. L. N. Kennett ; M. S. Sambridge

In: Geophys. J. Int., Warszawa, Elsevier, vol. 118, no. 1-2, pp. 693-706, pp. 1960, (ISBN: 0-12-018847-3)

zur Merkliste hinzufügen auf der Merkliste

Details

Publikationsdatum: 1994

Schlagwort(e): Location ; Seismology ; Hypocentral depth ; Data analysis / ~ processing ; GJI

Permalink

	Standort	Signatur	Erwartet	Verfügbarkeit

Andere fanden auch interessant ...

BIBLIOGRAFIE SEISMOLOGIE