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UNIVERSITY OF BUCHAREST
FACULTY OF PHYSICS Guest
2024-11-22 2:19 |
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Conference: Bucharest University Faculty of Physics 2010 Meeting
Section: Atmosphere and Earth Science; Environment Protection
Title:
A strong motion network in Romania: detection capabilities and analysis
Authors:
C. Neagoe, C. Ionescu, A. Danet, B. Grecu
Affiliation:
National Institute for Earth Physics, Romania
E-mail
cristian.neagoe@infp.ro
Keywords:
strong motion, analysis, network
Abstract:
In the last five years the National Institute for Earth Physics (NIEP), Romania, has developed its real-time seismic network. At present, NIEP operates 75 seismic stations equipped with both velocity and accelerometer sensors (2gEpi). Among these, 34 stations are equipped with broadband velocity sensors (CMG3ESP, CMG40T, KS2000, KS54000, STS2) while the rest of the stations are equipped with short period sensors (SH-1, S13, MP, RANGER). The data are continuously recorded and transmitted in real time to the Romanian National Data Center (RONDC) in Bucharest using GPRS lines and also through TCP/IP protocol. At RONDC Antelope 4.11 is running for acquisition and processing. The network is mainly devoted to estimating in real-time the earthquake location and magnitude from low- to high- magnitude events. In the last years the number of detected and located earthquakes per year has increased from 344 events in 2004 to 1137 events in 2009, while from January 2004 to December 2009 a dataset of 4382 events with local magnitude range from 1.6 to 6.0 has been collected. The strong motion network provides also the ground-motion parameters values such as peak ground acceleration (PGA) and velocity (PGV), response spectra (SA) so to get some insights about the ground shaking expected (shakemaps). As an example we present the distribution of the ground motion in terms of peak ground acceleration and peak ground velocity for Frebruary 25th, 2010 M = 4.0 event.
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