The Austrian Seismic Network
The seismic network of Austria is operated by
the Department of
Geophysics at the Central Institute of
Geodynamics (ZAMG) in Vienna.
At the moment four digital stations in Tyrol
operate at 100 Hz sampling rate. This network was established by the end of
1990 allowing a more precise evaluation of the seismic activity in the province
of Tyrol of Austria. These stations are equipped with S13-sensors supplied by
Teledyne® and the first data IRIS-type acquisition system
The four stations are to be upgraded during 2001 with one Q4120 at the station
at the Wattenberg (WTTA) and Q730's for the remaining three stations St.
Quirin (SQTA), Moosalm (MOTA) and Walderalm (WATA).
Five broad-band stations with STS-2
seismometers by Streckeisen and Quanterra®-data loggers have been
deployed in Austria so far. All but of two use Q380 data acquisition systems.
The two exceptional stations at Hochobir (OBKA) and at the Kölnbreinsperre
(KBA) are equipped with Q680-data loggers and strong-motion sensors,
whereas 'KBA' is equipped with an FBA23-sensor and 'OBKA' with an 'EpiSensor'
manufactured by Kinemetrics®. In addition, two stations of the
Institute of Physics of the Earth (IPE) in Brno and one station of the
Potsdam (GFZ-Potsdam), can be utilized on-line to evaluate
tremors in near-realtime. These stations use Q380 data loggers, too. Stations
in Austria exhibit a mean delay-time of 10 seconds for data transmission
from the seismic station to the data centre in Vienna. Data transmitted
telemetrically may take a bit longer due to technical constraints.
All data are accessible via 'AutoDRM' via email@example.com. All waveform data
are processed and analyzed with the 'Environmental Monitoring Software Antelope'
by Boulder Real Time Technologies®.
In addition, eighteen strong-motion sensors have been deployed through recent
years in Austria. Seven stations operate with SMACH SM-2-sensors from
SIGSA, five of which are installed in Vienna and two in the
vicinity of Wiener Neustadt - that is 40 km south of Vienna.
The other eleven stations are equipped with 'FBA23'-sensors and K2 data
acquisition systems manufactured by Kinemetrics®.
Today, still a few analogue seismometers are in use in Austria, such as in
Kremsmünster in the province of Upper Austria and the station Cobenzl in
Vienna and one analogue long period instrument at the ZAMG.
No mobile stations are available at the ZAMG for deployment for aftershock
studies and the like. Nevertheless, significant progress could be made in
cooperation with the On-Site Inspection Group of the CTBTO during the
aftershock sequence of the Ebreichsdorf earthquake of July 11,
2000 thus establishing the depth horizon at which the recent earthquake seems
to have taken place. Although most of these events were to weak to be recorded
by remote stations, clear indications regarding the focal mechanisms of the
main shock and subsequent largest aftershock could be evaluated by moment
tensor inversions (see web-site of the
Swiss Seismological Service) and first motion studies which were conducted
by the ZAMG.
Seismic stations in Austria
Short period S13
|| 1575 m
|| St. Quirin
|| 1307 m
|| 1492 m
|| 1764 m
|| 577 m
|| 1602 m
|| 1721 m
|| 572 m
|| 1075 m