Please use this identifier to cite or link to this item:
http://hdl.handle.net/2122/1262
DC Field | Value | Language |
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dc.contributor.authorall | Ursino, A.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Catania, Catania, Italia | en |
dc.contributor.authorall | Langer, H.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Catania, Catania, Italia | en |
dc.contributor.authorall | Scarfì, L.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Catania, Catania, Italia | en |
dc.contributor.authorall | Di Grazia, G.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Catania, Catania, Italia | en |
dc.contributor.authorall | Gresta, S.; Dipartimento di Scienze Geologiche, Università di Catania, Italy | en |
dc.date.accessioned | 2006-07-05T08:11:11Z | en |
dc.date.available | 2006-07-05T08:11:11Z | en |
dc.date.issued | 2001-08 | en |
dc.identifier.uri | http://hdl.handle.net/2122/1262 | en |
dc.description.abstract | The seismic network set up in the Hyblean Plateau (Southeastern Sicily) in the framework of the POSEIDON project is aimed at the seismic surveillance of the zone, and in particular the identification of faults with enhanced activity. The seismic activity as inferred from the records of the years 1994-1998 showed an apparent concentration of events in the zone between Augusta and Syracuse where important petrochemical facilities are present, with a resulting elevated secondary seismic risk. However, the heterogeneity in the distribution of events with respect to the time of day made us suspect that these seismicity maps are severely biased by artificial events, such as quarry explosions. We distinguished between tectonic earthquakes and quarry blasts by the inspection of waveforms of certain key stations, and by spectral analysis. As a general rule we found that the local tectonic microearthquakes are richer in high frequencies than the quarry blasts. All events which were identified as quarry blasts occurred during the daytime between 08:00 a.m. and 03:00 p.m. GMT and on weekdays from Monday to Friday. The aforementioned concentration of seismicity between Augusta and Syracuse disappeared when filtering out these events. Automatic discrimination was carried out in a straightforward way using Artificial Neural Networks (ANN) in a supervised classification. The application of the ANN to various test data sets gave a success of about 95%. This showed that our results obtained with a ‘visual’ discrimination are mathematically reproducible and not arbitrary. | en |
dc.format.extent | 6665767 bytes | en |
dc.format.mimetype | application/pdf | en |
dc.language.iso | English | en |
dc.relation.ispartofseries | 4/44 (2001) | en |
dc.subject | Hyblean plateau | en |
dc.subject | quarry blasts | en |
dc.subject | tectonic microearthquakes | en |
dc.subject | discriminations | en |
dc.subject | artificial neural network | en |
dc.title | Discrimination of quarry blasts from tectonic microearthquakes in the Hyblean Plateau (Southeastern Sicily) | en |
dc.type | article | en |
dc.type.QualityControl | Peer-reviewed | en |
dc.subject.INGV | 04. Solid Earth::04.06. Seismology::04.06.99. General or miscellaneous | en |
dc.description.journalType | JCR Journal | en |
dc.description.fulltext | open | en |
dc.contributor.author | Ursino, A. | en |
dc.contributor.author | Langer, H. | en |
dc.contributor.author | Scarfì, L. | en |
dc.contributor.author | Di Grazia, G. | en |
dc.contributor.author | Gresta, S. | en |
dc.contributor.department | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione OE, Catania, Italia | en |
dc.contributor.department | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione OE, Catania, Italia | en |
dc.contributor.department | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione OE, Catania, Italia | en |
dc.contributor.department | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione OE, Catania, Italia | en |
dc.contributor.department | Dipartimento di Scienze Geologiche, Università di Catania, Italy | en |
item.openairetype | article | - |
item.cerifentitytype | Publications | - |
item.languageiso639-1 | en | - |
item.grantfulltext | open | - |
item.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
item.fulltext | With Fulltext | - |
crisitem.author.dept | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione OE, Catania, Italia | - |
crisitem.author.dept | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione OE, Catania, Italia | - |
crisitem.author.dept | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione OE, Catania, Italia | - |
crisitem.author.dept | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione OE, Catania, Italia | - |
crisitem.author.dept | Università di Catania | - |
crisitem.author.orcid | 0000-0003-1942-7920 | - |
crisitem.author.orcid | 0000-0002-2508-8067 | - |
crisitem.author.orcid | 0000-0002-5995-3880 | - |
crisitem.author.orcid | 0000-0002-8153-9280 | - |
crisitem.author.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
crisitem.author.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
crisitem.author.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
crisitem.author.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
crisitem.classification.parent | 04. Solid Earth | - |
crisitem.department.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
crisitem.department.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
crisitem.department.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
crisitem.department.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
Appears in Collections: | Annals of Geophysics |
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