{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,18]],"date-time":"2026-02-18T04:23:17Z","timestamp":1771388597688,"version":"3.50.1"},"reference-count":50,"publisher":"MDPI AG","issue":"11","license":[{"start":{"date-parts":[[2022,5,27]],"date-time":"2022-05-27T00:00:00Z","timestamp":1653609600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"PON EWAS","award":["ARS 00926"],"award-info":[{"award-number":["ARS 00926"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Remote Sensing"],"abstract":"<jats:p>We describe the first dense real-time urban seismic\u2013accelerometric network in Italy, named OSU-CT, located in the historic center of Catania. The city lies in the region with the greatest danger, vulnerability, and earthquake exposure in the entire Italian territory. OSU-CT was planned and realized within the project called EWAS \u201can Early WArning System for cultural heritage\u201d, aimed at the rapid assessment of earthquake-induced damage and the testing of an on-site earthquake early warning system. OSU-CT is mainly based on low-cost instrumentation realized ad hoc by using cutting-edge technologies and digital MEMS (micro-electro-mechanical systems) triaxial accelerometers with excellent resolution and low noise. Twenty of the forty scheduled stations have already been set up on the ground floor of significant historic public buildings. In order to assess the performance of an earthquake early warning (EEW) on-site system, we also installed wide-band velocimeters (ETL3D\/5s) in three edifices chosen as test sites, which will be instrumented for a structural health monitoring (SHM). In addition to several laboratory and field validation tests on the developed instruments, an effective operational test of OSU-CT was the Mw 4.3 earthquake occurring on 23 December 2021, 16 km west, south-west of Catania. Peak ground accelerations (4.956 gal to 39.360 gal) recorded by the network allowed obtaining a first urban shakemap and determining a reliable distribution of ground motion in the historical center of the city, useful for the vulnerability studies of the historical edifices.<\/jats:p>","DOI":"10.3390\/rs14112583","type":"journal-article","created":{"date-parts":[[2022,5,31]],"date-time":"2022-05-31T02:30:06Z","timestamp":1653964206000},"page":"2583","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":17,"title":["The Urban Seismic Observatory of Catania (Italy): A Real-Time Seismic Monitoring at Urban Scale"],"prefix":"10.3390","volume":"14","author":[{"given":"Domenico","family":"Patan\u00e8","sequence":"first","affiliation":[{"name":"Isitituto Nazionale di Geofisica e Vulcanologia, Sezione di Catania-Osservatorio Etneo, 95125 Catania, Italy"}]},{"given":"Giuseppina","family":"Tusa","sequence":"additional","affiliation":[{"name":"Isitituto Nazionale di Geofisica e Vulcanologia, Sezione di Catania-Osservatorio Etneo, 95125 Catania, Italy"}]},{"given":"William","family":"Yang","sequence":"additional","affiliation":[{"name":"Isitituto Nazionale di Geofisica e Vulcanologia, Sezione di Catania-Osservatorio Etneo, 95125 Catania, Italy"}]},{"given":"Antonio","family":"Astuti","sequence":"additional","affiliation":[{"name":"Meridionale Impianti S.p.A., 20867 Caponago, Italy"}]},{"given":"Antonio","family":"Colino","sequence":"additional","affiliation":[{"name":"Meridionale Impianti S.p.A., 20867 Caponago, Italy"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7501-412X","authenticated-orcid":false,"given":"Antonio","family":"Costanza","sequence":"additional","affiliation":[{"name":"Isitituto Nazionale di Geofisica e Vulcanologia, Sezione di Catania-Osservatorio Etneo, 95125 Catania, Italy"}]},{"given":"Giuseppe","family":"D\u2019Anna","sequence":"additional","affiliation":[{"name":"Isitituto Nazionale di Geofisica e Vulcanologia, Sezione di Catania-Osservatorio Etneo, 95125 Catania, Italy"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9668-0287","authenticated-orcid":false,"given":"Sergio","family":"Di Prima","sequence":"additional","affiliation":[{"name":"Isitituto Nazionale di Geofisica e Vulcanologia, Sezione di Catania-Osservatorio Etneo, 95125 Catania, Italy"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0590-0353","authenticated-orcid":false,"given":"Gioacchino","family":"Fertitta","sequence":"additional","affiliation":[{"name":"Isitituto Nazionale di Geofisica e Vulcanologia, Sezione di Catania-Osservatorio Etneo, 95125 Catania, Italy"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2744-0578","authenticated-orcid":false,"given":"Salvatore","family":"Mangiagli","sequence":"additional","affiliation":[{"name":"Isitituto Nazionale di Geofisica e Vulcanologia, Sezione di Catania-Osservatorio Etneo, 95125 Catania, Italy"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5225-1421","authenticated-orcid":false,"given":"Claudio","family":"Martino","sequence":"additional","affiliation":[{"name":"Isitituto Nazionale di Geofisica e Vulcanologia, Osservatorio Vesuviano, 80124 Napoli, Italy"}]},{"given":"Orazio","family":"Torrisi","sequence":"additional","affiliation":[{"name":"Isitituto Nazionale di Geofisica e Vulcanologia, Sezione di Catania-Osservatorio Etneo, 95125 Catania, Italy"}]}],"member":"1968","published-online":{"date-parts":[[2022,5,27]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"147","DOI":"10.1785\/0220130091","article-title":"Performance of Several Low-Cost Accelerometers","volume":"85","author":"Evans","year":"2014","journal-title":"Seismol. 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