thumbnail

The Montenegro, Yugoslavia, earthquake of April 15, 1979: source orientation and strength

Physics of the Earth and Planetary Interiors

By:
, , ,
DOI: 10.1016/0031-9201(81)90041-8

Links

Abstract

Long-period teleseismic P, S and Rayleigh waves and geologic considerations indicate that the Montenegro earthquake involved thrust faulting on a plane striking nearly parallel to the Adriatic coast and dipping ca. 15?? toward the Yugoslav mainland. There is some support from modeling of body waves recorded on long-period WWSSN instruments for a focal depth of 22 km, but the possibility of a multiple source and the difficulty of matching some of the detailed characteristics of the P- and S-wave forms reduce our confidence in the determination of the depth. Fortunately, the source orientation and moment of the event are not sensitive functions of the depth. The long-period (256 s) moment was 4.6 ?? 1019 Nm (4.6 ?? 1026 dyne-cm). The moment obtained by fitting the first cycle of P and S waves recorded on WWSSN long-period instruments is about four times smaller. This increase of moment with period is consistent with spectral estimates of the moment from SH waves recorded at SRO and ASRO stations. ?? 1981.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
The Montenegro, Yugoslavia, earthquake of April 15, 1979: source orientation and strength
Series title:
Physics of the Earth and Planetary Interiors
DOI:
10.1016/0031-9201(81)90041-8
Volume
27
Issue:
2
Year Published:
1981
Language:
English
Publisher:
Elsevier
Publisher location:
Amsterdam, Netherlands
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
Physics of the Earth and Planetary Interiors
First page:
133
Last page:
142
Number of Pages:
10