OASIS: The OGS Archive System of Instrumental Seismology

Priolo, Enrico; Laurenzano, Giovanna; Barnaba, Carla; Bernardi, P.; Moratto, Luca; Spinelli, Andrea

doi:10.1785/0220140175

Cited by 13 publications

(9 citation statements)

References 14 publications

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“…The main features of OGS temporary stations are summarized in Table 1; further details can be found in OASIS, the OGS Archive System of Instrumental Seismology (Priolo et al 2015), under the network code MZ.…”

Section: The Ogs Temporary Networkmentioning

confidence: 99%

The Central Italy 2016–2017 seismic sequence: site response analysis based on seismological data in the Arquata del Tronto–Montegallo municipalities

Laurenzano

Barnaba

Romano

et al. 2018

Bull Earthquake Eng

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In this paper we evaluate the local seismic response for thirteen sites located in the municipalities of Arquata del Tronto and Montegallo, two areas which suffered heavy damage during the Mw 6.0 and Mw 5.4 earthquakes which struck Central Italy on August 24, 2016. The input dataset is made by ground motion recordings of 348 events occurred during the sequence. The spectral site response is estimated by the Generalized Inversion Technique and makes use of reference sites. The interpretation is further improved through the information provided by a reference-site independent method (i.e., the so called Receiver-Function Technique) and by the Horizontal-to-Vertical Spectral Ratios of ambient noise recordings. We also provide an independent estimate of the local amplification by comparing the Peak Ground Velocity and the Spectral Amplitudes observed at each site to the value estimated by well-established Ground Motion Prediction Equations for a rock-class site. The results obtained by the adopted methodologies are all highly consistent, and they emphasize the different seismic behavior of several sites at local scale. Thus, sites located on Quaternary deposits overlying the bedrock, such as Castro, Pretare, Spelonga, Pescara del Tronto, and Capodacqua feature some relevant amplifications in a medium (2-10 Hz) frequency range; two sites at Spelonga show amplifications also at low frequencies; three sites located on stiff formations, i.e. Uscerno, Balzo and Colle d'Arquata, respectively, feature either nearly neutral response or low amplification level. A probable topographic effect was identified at the rock site of Rocca di Arquata (MZ80).

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Section: The Ogs Temporary Networkmentioning

confidence: 99%

The Central Italy 2016–2017 seismic sequence: site response analysis based on seismological data in the Arquata del Tronto–Montegallo municipalities

Laurenzano

Barnaba

Romano

et al. 2018

Bull Earthquake Eng

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“…the archive named NISBAS-the Network of Italian Surface-Borehole Accelerometers and Seismometers (http://nisbas.crs.inogs.it, Mucciarelli et al 2015), which is devoted to organize, storage and provide access of data recorded by stations equipped with both surface and borehole sensors, and the archive named OASIS-the OGS Archive System of Instrumental Seismology (http://oasis.crs.inogs.it, Priolo et al 2015). The user can retrieve detailed information about the seismological station as well as download generic pieces of waveforms taken from the stream of continuous recordings.…”

Section: Description Of the Site And Station Installationmentioning

confidence: 99%

“…This paper does not necessarily represent DPC official opinion and policies. Accelerometric recordings for MIRB station can bee freely downloaded from NISBAS-Network of Italian Surface-Borehole Accelerometers and Seismometers (http:// nisbas.crs.inogs.it, Mucciarelli et al 2015) and from OASIS-the OGS Archive System of Instrumental Seismology (http://oasis.crs.inogs.it, Priolo et al 2015). Synthetic seismograms have been computed by the Wavenumber Integration Method, with the computer code of the package Computer Programs in Seismology developed by R. B. Herrmann at St. Louis University (Herrmann 1996a, b).…”

mentioning

confidence: 99%

Site response estimation at Mirandola by virtual reference station

Laurenzano

Priolo

Mucciarelli

et al. 2016

Bull Earthquake Eng

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In this paper, we address the issue of evaluating the seismic site response for sites located on large alluvial plains, for which no reference sites can be identified, but some earthquakes can be simultaneously recorded at both surface and depth. In the proposed method, surface and borehole records are firstly used to assess the local 1D velocity model, then a model representing a virtual reference rock site is defined, and finally the site spectral amplification is calculated through numerical modeling. The effectiveness of the method is demonstrated at the site of Mirandola (Italy). This site is located in an area which suffered heavy damage during the seismic sequence that started in Northern Italy with the Mw = 5.8 event on May 20th, 2012. That time, the site hosted an accelerometer of the National Accelerometric Network, which recorded the whole sequence. A new station, named MIRB (MIRandola Borehole), was installed during 2014; it is equipped with three accelerometric sensors deployed at surface, 31 and 126 m depth, respectively. The results of this study evidence that Mirandola is characterized by an amplification level consistent with that of a class-C soil for up to a period of about 0.45 s, while for higher periods, the amplification lays between class-B and C soils.

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“…Seismograms were extracted and downloaded in Seismic Analysis Code (SAC) format (Goldstein et al, 2003;Helffrich et al, 2013) from the National Institute of Oceanography and Experimental Geophysics (OGS) Archive System of Instrumental Seismology (OASIS) database (Priolo, Laurenzano, et al, 2015).…”

Section: E Q -T a R G E T ; T E M P : I N T R A L I N K -; D F 5 ; 4 mentioning

confidence: 99%

Misalignment Angle Correction of Borehole Seismic Sensors: The Case Study of the Collalto Seismic Network

Zaldívar

Priolo

Grigoli

et al. 2016

Seismological Research Letters

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One of the most critical problems affecting seismological data acquisition is related to possible misorientation of three-component seismic sensors. This generally happens when their orientation cannot be measured directly, as in the case of sensors deployed in boreholes. We describe here the sensor reorientation procedure of the Collalto Seismic Network, a microseismic monitoring network located in northeastern Italy that consists of 10 broadband three-component stations deployed in boreholes. We apply a procedure based on the misfit minimization of a complex trace recorded by a given station with respect to a reference station for which orientation is known. The main advantage of this methodology is that the reorientation of seismic sensors can be viewed as a linear inverse problem in the complex domain, which ensures that the preferred solution corresponds to the global minimum of a misfit function. Furthermore, it is also possible to simultaneously use more than one seismic event to better constrain the solution of the inverse problem. In this article, we further compare the orientation results obtained for a seismometer-seismometer sensor pair with those obtained using an accelerometer-seismometer sensor pair. We finally show the reorientation results for all the stations of the network, obtained using eight teleseismic events that occurred

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OASIS: The OGS Archive System of Instrumental Seismology

Abstract: Online Material: List of main seismological databases, OASIS database general schema, tables of networks and stations, and example station monography and extracted waveform time series.

Cited by 13 publications

References 14 publications

The Central Italy 2016–2017 seismic sequence: site response analysis based on seismological data in the Arquata del Tronto–Montegallo municipalities

The Central Italy 2016–2017 seismic sequence: site response analysis based on seismological data in the Arquata del Tronto–Montegallo municipalities

Site response estimation at Mirandola by virtual reference station

Misalignment Angle Correction of Borehole Seismic Sensors: The Case Study of the Collalto Seismic Network

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