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| Avtorstvo: |
Iztok PERUŠ // 1.01 Izvirni znanstveni članek
Janez LAPAJNE // 1.01 Izvirni znanstveni članek
Peter FAJFAR // 1.01 Izvirni znanstveni članek
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| Leto: |
1998 |
| Citat: |
PERUŠ, Iztok, ŠKET, Barbara, FAJFAR, Peter,
LAPAJNE, Janez. Potres 12. aprila 1998 v zgornjem Posočju : analiza gibanja tal
= The earthquake on april 12, 1998 in the upper Soča territory : ground motion
analysis. Potresi (Ljubl.), 1999, 1998, str. 81-90, graf. prikazi.
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| Povzetek: |
Dne 12. aprila 1998 je bil v zgornjem Posočju potres z oceno magnitude
5,8. Gibanje tal med potresom je zabeležilo 17 akcelerografov v Sloveniji in
Italiji, od katerih je bil najbližji oddaljen okrog 22 km od nadžarišća. V
okviru razvojno raziskovalnih nalog so zbrani akcelerogrami ter podatki o
instrumentih in o njihovih lokacijah. Iz popravljenih (korigiranih)
akcelerogramov so izračunani in narisani časovni poteki hitrosti in pomikov tal
ter spektri pospeškov, hitrosti in pomikov. Analizirana sta tudi dva
akcelerograma najmočnejšega popotresa 6. maja 1998. Povprečni spektri so
primerjani s spektri po Eurocode 8, pojemanje največjega (vršnega) pospeška tal
PGA pa z modeli pojemanja, ki se uporabljajo za ozemlje Slovenije. Primerjave z
dolgoročnimi verjetnostnimi ocenami potresne nevarnosti in ocene pospeška v
okolici nadžarišča kažejo, da dobimo z obstoječimi modeli pojemanja precej večje
PGA od izmerjenih. Tudi normiran spekter odziva po Eurocode 8 je pri večini
nihajnih časov konservativen
On 12th April, 1998, a 5.8 magnitude
earthquake occurred in upper Soča Territory, Slovenia. The ground motion was
recorded on 17 accelerographs in Slovenia and Italy. The nearest one was located
at a distance of about 22 km. Within the research projects the recorded
accelerograms, data on instruments and on the sites have been collected. The
accelerograms were corrected for instrument response and the time-histories of
ground velocities and ground displacements, as well as acceleration, velocity
and displacement spectra were calculated and plotted. Two records obtained
during the strongest aftershock were also analyzed. Attenuation of recorded peak
ground acceleration (PGA) was compared with attenuation equations used in
Slovenia, and mean spectra were compared with spectra according to Eurocode 8.
Probabilistic seismic hazard analysis and estimated epicentral acceleration
values are also given. It has been shown that both attenuations and EC8 spectra,
used in Slovenia, yield larger values than those recorded from the earthquake
[COBISS.SI-ID 824673]
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| Tipologija: |
1.01 Izvirni znanstveni članek |
| COBISS ID |
824673 Polni zapis iz sistema COBISS |
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Vpisal 2009/06/10 11:56
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