6 documents found in 126ms
# 1
Passarelli, Luigi • Govoni, Aladino • Francesco, Maccaferri • Woith, Heiko • Strollo, Angelo • (et. al.)
Abstract: The aim of this temporary experiment is to monitor the interaction between crustal fluids and earthquake occurrence. Two sites have been initially investigated: one is in the eastern sector of the Pollino mountain range, located at the border of Southern Apennines chain and Calabrian arc and the other is Mefite d'Ansanto moffete, one of the largest non-volcanic CO_2 emission in the world and located in Irpinia area, in the southern Apennines. The seismicity in the eastern sector of the Pollino range is very low except for a deep (>20km) earthquake swarm which started in the middle of September 2017 and lasted for some weeks with events up to Ml=2.7. The Mefite d'Ansanto site sits at the northern end of the northern fault activated by the M_w 6.8 Irpinia earthquake in 1980 and in the well-known thermal anomaly area of the Mt. Forcuso. A ~10km radius area around Mefite steems out for a very low seismicity rate compared with the high seismicity activity of this portion of Southern Apennines. In the frame of a long-term collaborative efforts made by the German Research Centre for Geoscience (GFZ) and the Istituto Nazionale di Geofisica e Vulcanologia (INGV) in the Pollino area a temporary network has been deployed to analyze the low earthquakes rate, the seismogenic structures and a possible signature of interaction with fluids redistribution within the crust. The temporary network consists of 3 seismic stations equipped with Trillium compact 120 sec. sensors and DCube digitizers using also CCube modules for real time data transmission. One single station with similar hardware has been used also to monitor the Mefite d'Ansanto in the Irpinia area with similar aim. Data is available from the GEOFON data centre, under network code YZ, and is embargoed until three years after the end of the experiments.
# 2
Heit, B. • Weber, M. • Tilmann, F. • Haberland, C. • Jia, Y. • (et. al.)
Abstract: The SWATH-D experiment is dense deployment of 154 seismic stations in the Central and Eastern Alps between Italy and Austria, complementing the larger-scale sparser AlpArray Seismic Network (AASN). SWATH-D will provide high resolution images from the surface into the upper mantle, and allow observations of local seismicity. SWATH-D focuses on a key area of the Alps where the hypothesized flip in subduction polarity has been suggested, and where an earlier seismic profile (TRANSALP) has imaged a jump in the Moho. Where mains power is available (at ca. 80 sites) stations are providing realtime data via the cellphone network and are equipped with Güralp CMG-3EPSC (60s) seismometers and Earth Data Recorders EDR-210. The rest of the stations are offline and consist mainly of Nanometrics Trillium Compact (120s) and Güralp CMG-3EPSC (60s) seismometers equipped with either Omnirecs CUBE3 or PR6-24 Earth Data Loggers. All stations are equipped with external GPS antennas and the sampling rate is 100 Hz (Heit, et al., 2018). The network will operate for 2 years starting in July 2017. The Swath-D data will be used directly by 20 individual proposals of the MB-4D Priority Program (Mountain Building Processes in Four Dimensions, 2017) of the German Research Foundation (DFG) and data products derived from it will contribute to additional 13 proposals. SWATH-D is thus an important link between the MB-4D Priority Program and the international AlpArray communities and a scientific service to many of the proposals within the DFG Priority Program. Waveform data are available from the GEOFON data centre, under network code ZS, and are embargoed until August 2023. After the end of embargo, data will be openly available under CC-BY 4.0 license according to GIPP-rules.
# 3
Schurr, B. • Yuan, X. • Kufner, S. • Bloch, W.
Abstract: The Sarez Pamir aftershock seismic network was installed two months after the 7 December 2015, Mw7.2 Sarez Pamir earthquake in the eastern Pamir highland of Tajikistan. In the first recording period until September 2016, the stations were distributed along the Sarez-Karakul fault system. In September 2016 part of the stations were moved into the southern Pamir. In total the network consisted of eight stations on 13 sites, equipped with broad band, 3-component seismometers of type Trillium Compact. The data were recorded using Earth Data recorders (EDR), recording was continuous at a sample rate of 100Hz.The principal aim of the network was to record the aftershock sequence of the Sarez earthquake and to augment the coeval East Pamir China seismic network and the earlier TIPAGE and TIPTIMON seismic networks. Waveform data are available from the GEOFON data centre, under network code 9H, and are embargoed until January 2021.
# 4
Yuan, X. • Schurr, B. • Bloch, W. • Xu, Q. • Zhao, J.
Abstract: The East Pamir seismic network was located on the eastern flank of the Pamir highlands and the in the foreland of the adjacent Tarim Basin of western China. It was in operation between August 2015 and May 2017 and consisted of 30 broad band, 3-component seismometers of type Güralp CMG-3ESP or Nanometrics Trillium 120. The data were recorded using Earth Data PS6-24 "EDL" recorders, continuously at a sample rate of 100Hz, with an average station distance of ~20km. The network was designed to augment the earlier TIPAGE and TIPTIMON seismic networks.The principal aim of the network was to characterize the current deformation field in the region. It further recorded the 2015 M7.2 Sarez earthquake. Waveform data are available from the GEOFON data centre, under network code 8H, and are embargoed until January 2021.
# 5
Institute of Physics of the Earth Masaryk University Brno (IPE)
Abstract: The Seismic Network MONET (MOravia NETwork) is a local network of seismic stations for monitoring of seismic activity in the NE Czech Republic. This region is characterized by regionally anomalous rate of microseismicity, occurence of moderate historical earthquakes and other expressions of geodynamic activity (Nysa-Morava Zone). The current MONET network (upgraded within the CzechGeo/EPOS project) consists of 7 short period stations in the northern and central Moravia operated by Institute of Physics of the Earth MU Brno (IPE): MUVC, ANAC, LIPC, LOSC, SUPC, LUKC and MORC (the latter is colocated with the broadband station MORC). All these stations are equipped with sensitive seismometers seated in 2-5 m deep shafts and provide real-time continuous low-noise records sampled at 200 Hz.
# 6
Kövesligethy Radó Seismological Observatory (Geodetic and Geophysical Institute, Research Centre for Astronomy and Earth Sciences, Hungarian Academy of Sciences (MTA CSFK GGI KRSZO))
Abstract: The Hungarian National Infrasound Network (HNIN) is a permanent infrasound network operated by the Kövesligethy Radó Seismological Observatory (Geodetic and Geophysical Institute, Research Centre for Astronomy and Earth Sciences, Hungarian Academy of Sciences). The main purpose of the network is the continuous monitoring of seismo-acoustic events in Hungary and to provide high quality data for the seismological and geodynamic scientific research. The first infrasound array of the HNIN started its operation in 2017. Currently the network consists of one four-element array equipped with microbarographs. The PSZI infrasound array is co-located with a seismic three-component broadband station, PSZ, operated by the Hungarian National Seismological Network (HNSN). All data are acquired in real-time to the HNIN data centre located at the Kövesligethy Radó Seismological Observatory in Budapest that also operates HNSN. The HNSN/HNIN follows an open data policy, as seismic and infrasound waveform data are available in real time without any restriction within from the HNSN/HNIN data centre as well as from the European Integrated Data Archive via the GEOFON data centre.
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