scholarly journals The May 2012 Pianura Padana Emiliana seismic sequence: INGV strong-motion data website

2012 ◽  
Vol 55 (3) ◽  
Author(s):  
Marco Massa ◽  
Sara Lovati ◽  
Rodolfo Puglia ◽  
Gabriele Ameri ◽  
Dario Sudati ◽  
...  
Keyword(s):  
Focal Mechanism ◽  
Web Site ◽  
Strong Motion ◽  
Northern Italy ◽  
Seismic Network ◽  
Seismic Sequence ◽  
Strong Motion Data ◽  
Motion Data ◽  
Strong Motion Network ◽  
The Web

On May 20th 2012, at 02:03:52 UTC, a ML 5.9 (Mw 6.0) earthquake struck northern Italy (http://cnt.rm.ingv.it/). The epicentre was localized at 44.89˚ N and 11.23˚ E, in an area among the cities of Ferrara, Modena and Mantova. The event occurred at a depth of about 6.3 km, and was characterized by a reverse focal mechanism (http://cnt.rm.ingv.it/tdmt.html/). From May 20th, thousand of earthquakes, the strongest of which with a ML 5.8 (May 29th, 07:00:03 UTC), occurred in the same area (http://iside.rm.ingv.it/).This note presents a new web site, www.mi.ingv.it/ISMD/ismd.html/ (Figure 1) that includes about 2000 three-component strong-motion recordings of the events with 4.0 ≤ ML ≤ 5.9 occurred in the central part of the Pianura Padana Emiliana (northern Italy) from May 20th to June 12th. The data come from all INGV strong-motion stations installed in northern Italy (i.e. strong-motion stations of the National Seismic Network, RSN [Amato and Mele 2008]; Strong-Motion Network of Northern Italy, RAIS, http://rais.mi.ingv.it/ [Augliera et al. 2011]) and selected with a minimum latitude of 43.5˚ N. The earthquake locations reported in the web site come from the National Earthquake Centre of INGV (http://cnt.rm.ingv.it/).

scholarly journals The INGV real time strong motion data sharing during the 2016 Amatrice (central Italy) seismic sequence

2016 ◽  
Vol 59 ◽  
Author(s):  
Marco Massa ◽  
Ezio D'Alema ◽  
Chiara Mascandola ◽  
Sara Lovati ◽  
Davide Scafidi ◽  
...  
Keyword(s):  
Real Time ◽  
Data Sharing ◽  
Strong Motion ◽  
Main Task ◽  
Seismic Sequence ◽  
Web Portal ◽  
Epicentral Area ◽  
Strong Motion Data ◽  
Motion Data ◽  
The Web

<p><em>ISMD is the real time INGV Strong Motion database. During the recent August-September 2016 Amatrice, Mw 6.0, seismic sequence, ISMD represented the main tool for the INGV real time strong motion data sharing.  Starting from August 24<sup>th</sup>,  the main task of the web portal was to archive, process and distribute the strong-motion waveforms recorded  by the permanent and temporary INGV accelerometric stations, in the case of earthquakes with magnitude </em><em>≥</em><em> 3.0, occurring  in the Amatrice area and surroundings.  At present (i.e. September 30<sup>th</sup>, 2016), ISMD provides more than 21.000 strong motion waveforms freely available to all users. In particular, about 2.200 strong motion waveforms were recorded by the temporary network installed for emergency in the epicentral area by SISMIKO and EMERSITO working groups. Moreover, for each permanent and temporary recording site, the web portal provide a complete description of the necessary information to properly use the strong motion data.</em></p>

Introducing ISMDq—A Web Portal for Real-Time Quality Monitoring of Italian Strong-Motion Data

2021 ◽  
Author(s):  
Marco Massa ◽  
Davide Scafidi ◽  
Claudia Mascandola ◽  
Alessio Lorenzetti
Keyword(s):  
Data Quality ◽  
Ambient Noise ◽  
Strong Motion ◽  
Low Noise ◽  
Data Availability ◽  
Eurocode 8 ◽  
Strong Motion Data ◽  
Motion Data ◽  
Strong Motion Network ◽  
Quality Indexes

Abstract We present the Istituto Nazionale di Geofisica e Vulcanologia Strong-Motion Data-quality (ISMDq)—a new automatic system designed to check both continuous data stream and event strong-motion waveforms before online publication. The main purpose of ISMDq is to ensure accurate ground-motion data and derived products to be rapidly shared with monitoring authorities and the scientific community. ISMDq provides data-quality reports within minutes of the occurrence of Italian earthquakes with magnitude ≥3.0 and includes a detailed daily picture describing the performance of the target strong-motion networks. In this article, we describe and discuss the automatic procedures used by ISMDq to perform its data-quality check. Before an earthquake, ISMDq evaluates the selected waveforms through the estimation of quality indexes employed to reject bad data and/or to group approved data into classes of quality that are useful to quantify the level of reliability. The quality indexes are estimated based on comparisons with the background ambient noise level performed both in the time and frequency domains. As a consequence, new high- and low-noise reference levels are derived for the overall Italian strong-motion network, for each station, and for groups of stations in the same soil categories of the Eurocode 8 (Eurocode 8 [EC8], 2003). In absence of earthquakes, 24 hr streaming of ambient noise recordings are analyzed at each station to set an empirical threshold on selected data metrics and data availability, with the goal to build a station quality archive, which is daily updated in a time span of six months. The ISMDq is accessible online (see Data and Resources) from August 2020, providing rapid open access to ∼10,000 high-quality checked automatically processed strong-motion waveforms and metadata, relative to more than 160 Italian earthquakes with magnitude in the 3.0–5.2 range. Comparisons between selected strong-motion data automatically processed and then manually revised corroborate the reliability of the proposed procedures.

scholarly journals The web portal of the EUROSEISTEST strong ground motion database.

2016 ◽  
Vol 47 (3) ◽  
pp. 1221
Author(s):  
K. Pitilakis ◽  
Z. Roumelioti ◽  
M. Manakou ◽  
D. Raptakis ◽  
K. Liakakis ◽  
...  
Keyword(s):  
Strong Motion ◽  
Response Spectra ◽  
Great Effort ◽  
Web Database ◽  
Web Portal ◽  
Northern Greece ◽  
Strong Motion Data ◽  
Motion Data ◽  
Graphical Environment ◽  
The Web

Strong motion data that have been recorded during the 20-years of operation of the permanent network of EUROSEISTEST (Mygdonia basin, Northern Greece) have been homogenized and organized in an easily accessible, via the web, database. The EUROSEISTEST web portal and the application server running underneath are based solely on free and open source software (F/OSS; MySQL v5.5; RubyOnRails,SAC, Gnuplot and numerous GNU supporting utilities). Its interface allows the user to easily search strong motion data from approximately 200 events and 26 strong motion stations using event-related, record-related or station-related criteria. Further investigation of the data is possible in a graphical environment which includesplots of processed and unprocessed acceleration waveforms, velocity and displacement time histories, amplitude Fourier and response spectra and spectrograms. A great effort was directed toward the inclusion of accurate and most updated earthquake metadata, as well as a wealth of stations related information such as geotechnicaland geophysical site characterization measurements, subsoil structure and site effects. Acceleration data can be easily downloaded in either SAC or ASCII format, while all stations metadata are also available to download. 

Frequency variation in site response as observed from strong motion data of the L’Aquila (2009) seismic sequence

2011 ◽  
Vol 9 (3) ◽  
pp. 869-892 ◽  
Author(s):  
R. Puglia ◽  
R. Ditommaso ◽  
F. Pacor ◽  
M. Mucciarelli ◽  
L. Luzi ◽  
...  
Keyword(s):  
Site Response ◽  
Strong Motion ◽  
Frequency Variation ◽  
Seismic Sequence ◽  
Strong Motion Data ◽  
Motion Data

THE AIGIO (GREECE) SEISMIC SEQUENCE OF JUNE 1995: SEISMOLOGICAL, STRONG MOTION DATA AND EFFECTS OF THE EARTHQUAKES ON STRUCTURES

1999 ◽  
Vol 3 (3) ◽  
pp. 349-380 ◽  
Author(s):  
V. A. LEKIDIS ◽  
C. Z. KARAKOSTAS ◽  
P. P. DIMITRIU ◽  
B. N. MARGARIS ◽  
I. KALOGERAS ◽  
...  
Keyword(s):  
Strong Motion ◽  
Seismic Sequence ◽  
Strong Motion Data ◽  
Motion Data

Overview on the Strong-Motion Data Recorded during the May-June 2012 Emilia Seismic Sequence

2013 ◽  
Vol 84 (4) ◽  
pp. 629-644 ◽  
Author(s):  
L. Luzi ◽  
F. Pacor ◽  
G. Ameri ◽  
R. Puglia ◽  
P. Burrato ◽  
...  
Keyword(s):  
Strong Motion ◽  
Seismic Sequence ◽  
Strong Motion Data ◽  
Motion Data

scholarly journals INGV strong-motion data web-portal: a focus on the Emilia seismic sequence of May-June 2012

2012 ◽  
Vol 55 (4) ◽  
Author(s):  
Marco Massa ◽  
Sara Lovati ◽  
Dario Sudati ◽  
Gianlorenzo Franceschina ◽  
Emiliano Russo ◽  
...  
Keyword(s):  
Real Time ◽  
Working Group ◽  
Strong Motion ◽  
Automatic Processing ◽  
Seismic Sequence ◽  
Web Portal ◽  
Strong Motion Data ◽  
Motion Data ◽  
Processing Procedure ◽  
Event Occurrence

<p>[…] Recently, an INGV working group developed the first version of a web portal with the aim of archiving, processing and distributing accelerometric data recorded by permanent and temporary INGV stations. This web portal (www.mi.ingv.it/ISMD/) is composed of two main modules: the former is known as the INGV Strong Motion Data (ISMD, www.mi.ingv.it/ISMD/ismd.html/) and has as its main scope the analyse and distribution in quasi-real time (a few hours after event occurrence) of the uncorrected accelerometric data, and the related metadata obtained after an automatic processing procedure. This latter, known as the Dynamic Archive (DYNA, http://dyna.mi.ingv.it/DYNA-archive/) is a dynamic database where manually post-processed accelerometric waveforms are provided, together with their metadata. Both of these archives are designed and structured in such a way that their compilations and updating will be almost completely automatic. At the end of May 2012, a first prototype of the ISMD module was published, providing the uncorrected strong-motion data recorded by the INGV stations for the main events of the Emilia seismic sequence. […]</p>

Processed strong-motion data for the El Salvador earthquake of June 19, 1982

1988 ◽  
Author(s):  
Kenneth W. Campbell ◽  
Sylvester Theodore Algermissen
Keyword(s):  
El Salvador ◽  
Strong Motion ◽  
Strong Motion Data ◽  
Motion Data
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