Abstract
The macroseismic intensity attenuation (m.i.a.) laws for the main seismic provinces with crustal foci of the Romanian territory and adjacent areas were established. The input data consist of MSK-64 intensities of 18 earthquakes with epicentral/maximum intensity in the range V to X degrees (MSK scale), whose isoseismal maps were available.
The attenuation was analyzed as a function of distance and azimuth and from the three main attenuation formulas (logarithmic, exponential, and power-law) (the last one was preferred, as it best fits the observed data) and, consequently, were used for each seismogenic region. The bulk of derived equations is intended to be further used in the assessment of the seismic hazards of Romania.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Constantinescu, L. and Marza, V. I.: 1980, A computer-compiled and computer-oriented catalogue of Romania's earthquakes during a millennium (1984–1979),Rév. Roum. Géol. Geoph. Géogr., Géophys. 24, 193–206.
Cornell, C. A.: 1968, Engineering seismic risk analysis,Bull. Seismol. Soc. Am. 58, 1583–1606.
Dumitrescu, I. and Sandulescu, M.: 1974, The East Carpathians, flysch zone 221–234. The Carpathian foredeep 276–278, inTectonics of the Carpathian Balkan Regions, Geol. Inst., Dionyza štura Bratislava.
Ergin, K.: 1969, Observed intensity-epicentral distance relations in earthquakes,Bull. Seismol. Soc. Am. 59, 1227–1238.
Gutenberg, B. and Richter, C. F.: 1942, Earthquake magnitude, intensity, energy and acceleration,Bull. Seismol. Soc. Am. 32, 163–191.
Howel, B. F. and Schultz, T. R.: 1975, Attenuation of modified mercalli intensity with distance from the epicenter,Bull. Seismol. Soc. Am. 65, 651–665.
Milne, W. G. and Davenport, A. G.: 1969, Earthquake risk in Canada,Bull. Seismol. Soc. Am. 59, 729–754.
Neumann, F.: 1954, Earthquake intensity and related ground motion, University of Washington.
Radu, C.: 1976, Seismic zoning of Romania, in V. Karnik and C. Radu (eds.),Proc. Seminar on Seismic Zoning Maps, Skopje, 27 October–4 November 1975, I, pp. 336–358.
Shebalin, N. V., Karnik, V., and Hadzievski, D.: 1974,Catalogue of Earthquakes. Part. I, 1901–1970: Part II, prior to 1901, UNESCO, Skopje.
Stepp, J. C.: 1971, An investigation of earthquake risk in the Puget Sound area by use of the type I distribution of largest extremes, Ph D thesis, Pennsylvania State University.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Pantea, A. Macroseismic intensity attenuation for crustal sources on romanian territory and adjacent areas. Nat Hazards 10, 65–72 (1994). https://doi.org/10.1007/BF00643442
Received:
Issue Date:
DOI: https://doi.org/10.1007/BF00643442