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| Titel |
A new earthquake catalogue for Bulgaria and the conterminous Balkan high hazard region |
| VerfasserIn |
T. J. Bayliss, P. W. Burton |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1561-8633
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| Digitales Dokument |
URL |
| Erschienen |
In: Natural Hazards and Earth System Science ; 7, no. 3 ; Nr. 7, no. 3 (2007-05-10), S.345-359 |
| Datensatznummer |
250004540
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| Publikation (Nr.) |
 copernicus.org/nhess-7-345-2007.pdf |
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| Zusammenfassung |
| A new homogenous earthquake catalogue covering Bulgaria and the surrounding
Balkan area has been created with intention of performing a consistent
seismic hazard assessment across the region. In keeping with modern
requirements of cataloguing seismicity, this catalogue has been made
homogenous as far as possible with regards to magnitude, which has been
provided on any of four different reported scales for each event; mb,
Ms, Mw and ML. A key historical catalogue for the region has
been used to represent the early instrumental period of earthquake recording
(1900 to 1963), whilst data have been obtained from the International
Seismological Centre (ISC), National Earthquake Information Center (NEIC) and
National Observatory of Athens (NOA) to cover the instrumental period of
earthquake recording (1964 to 2004). ISC data have also been used to develop
a new mb→Ms magnitude conversion equation for the catalogued
region. Application of this new magnitude conversion relation, in combination
with other selected magnitude scale correlations, ensures reported magnitudes
can be systematically rendered onto homogenized Ms and Mw scales
for all earthquakes. This catalogue contains 3681 events with homogenized
magnitudes ≥4.0 Mw, for the time interval 1900 to 2004
(inclusive), located in the region bounded by 39°–45° N,
19°–29° E, at focal depths of 0.0 km to 401.0 km and in a
magnitude range 4.0≤Mw≤7.2. Selected large magnitude (M≥6.0 Ms)
earthquakes have had their reported magnitudes reassessed
– and adjusted if necessary – in light of work by other authors. Applied
statistical approaches aimed at determining the lower threshold to magnitude
completeness suggest this catalogue is complete down to a homogenized
surface-wave magnitude of 4.6 Ms. |
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