SVIBOR - Papers quoted in CC - project code: 1-06-267

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Papers quoted in Current Contents on project 1-06-267

Quoted papers: 7
Other papers: 39
Total: 46

Title:

Authors:: Herak, Marijan (113753)

Journal: Physics of the Earth and Planetary Interiors
ISSN: 0031-9201
Volume: 67
Year: 1991
Pages: from 303 to 312
Number of references: 21
Language: engleski
Summary: The paper presents results of the coda quality factor (Qc)measurements in the central Outer Dinarides and the centralAdriatic Sea regions. The results indicate that in the regionstudied Qc increases both with frequency and lapse time, whilethe degree of frequency dependence decreases with lapse time. IfQc is expressed as Qc(t)=Q0(t)f**n(t) then for lapse timesbetween 30 and 130 s Q0 increases from 45 to 275 while ndecreases from 1.0 to 0.6.
Keywords: coda waves, Qc, attenuation

Title:

Authors:: Herak, Marijan (113753); Herak, Davorka (81783)

Journal: Bulletin of the Seismological Society of America
Number: 6
ISSN: 0037-1106
Volume: 83
Year: 1993
Pages: from 1881 to 1892
Number of references: 6
Language: engleski
Summary: The study of 5514 Ms readings revealed that Ms values as obtained by the Moscow-Prague formula are significantly distance dependent. Average relative errors of over 0.5 magnitude units are made when using amplitude readings from very near and very distant station. The new calibrating function for 20 sec Rayleigh waves is proposed in which the amplitudes decreases as distance +1.094, which agrees with results of theoretical studies.
Keywords: Ms magnitude, Rayleigh waves, attenuation

Title:

Authors:: Trifunac, M.D.; Herak, Davorka (81783)

Journal: Soil Dynamics and Earthquake Engineering
ISSN: 0267-7261
Volume: 11
Year: 1992
Pages: from 229 to 241
Number of references: 34
Language: engleski
Summary: We show how by comparing Ml**SM and Msta it is possible tocalibrate amplitude-distance attenuation equations used in Mstadefinitions. This more accurate, magnitude determination forregional networks is essential for:(1) better and more accurateintegration of the ingineering estimates of seismic risk: and (2)for more accurate and quick estimation of strong motionamplitudes in epicentral region of destructive earthquakes.
Keywords: Ml**SM magnitude, accelerogram, attenuation

Title:

Authors:: Herak, Marijan (113753); Herak, Davorka (81783)

Journal: Bulletin of the Seismological Society of America
Number: 3
ISSN: 0037-1106
Volume: 85
Year: 1995
Pages: from 962 to 962
Number of references: 3
Language: engleski

Title:

Authors:: Herak, Davorka (81783); Herak, Marijan (113753)

Journal: Tectonophysics
Number: 1-2
ISSN: 0040-1951
Volume: 241
Year: 1995
Pages: from 121 to 141
Number of references: 36
Language: engleski
Summary: The paper presents body-wave velocities in the crust and upper mantle of the circum-Adriatic region obtained by analyzing travel times of regional phases of 419 selected earthquakes with epicentres in the central part of External Dinarides. The studied region was divided into five areas and two kinds of velocity models were determined for each of them. The first kind (interarea models) give average velocities that characterize the zone between and including the epicentral region and the area in question, while the second kind (intraarea models) present velocities within the respective area. The locations of hypocentres considerably improved when the new models were used instead of the standard one for the Balkan region. The large scale variation of average velocities obtained by interarea modeling was found to be relatively small both in the crust and in the upper mantle. On the other hand, the magnitude and distribution of station corrections and the resulting intraarea velocities point to relatively pronounced lateral velocity variation within some of the studied regions. The obtained velocities in most cases do not differ significantly when compared to the values reported in other studies. The most important exceptions occur in the epicentral area (central part of External Dinarides) where the P-wave velocity in the upper crust is much higher then elsewhere, while the velocity in the upper mantle is found to be lower than that determined by DSS experiments. There is also an indication of pronounced variation of the Poisson ratio in this area.
Keywords: Body-wave velocities, velocity models, seismicity

Title:

Authors:: Herak, Marijan (113753); Herak, Davorka (81783); Markušić, Snježana (164886)

Journal: Terra Nova
Number: 6
ISSN: 0954-4879
Volume: 7
Year: 1995
Number of references: 39
Language: engleski
Summary: The paper presents the results of Croatian earthquake catalogue revision for the period 1908-1992. The revised catalogue lists a total of 4853 events (4486 after 1908), of which 3700 are mainshocks. All primary data sources available to us (seismograms, phase onset time readings, macroseismic questionnaires...) were consulted in order to improve the quality and reliability of magnitude, intensity and location. Along with the most important earthquake parameters the catalogue contains entries that enable assessment of the reliability of location and bibliographic references. Using the temporal analysis of the maximum-likelihood estimate of the b-value in the frequency-magnitude relation, the catalogue is estimated to be complete for events with M>4.0 throughout the investigated period. The magnitude completeness threshold decreases to 3.8 after the middle of the century, and to about 3.6 in the last three decades. It is noted that the b-value variation with time is closely tied to the seismic activity, as well as that at present there seems to be lack of seismic energy release corresponding to the M=6.0-6.5 earthquake.
Keywords: earthquake catalogue, b-value


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