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  <identifier identifierType="DOI">10.13127/VULCANO/TESV_1988</identifier>
  <creators>
    <creator>
      <creatorName nameType="Personal">Falsaperla, Susanna</creatorName>
      <givenName>Susanna</givenName>
      <familyName>Falsaperla</familyName>
      <nameIdentifier nameIdentifierScheme="ORCID" schemeURI="https://orcid.org">https://orcid.org/0000-0002-1071-3958</nameIdentifier>
      <affiliation affiliationIdentifier="https://ror.org/00qps9a02" affiliationIdentifierScheme="ROR" schemeURI="https://ror.org">Istituto Nazionale di Geofisica e Vulcanologia (INGV)</affiliation>
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  <titles>
    <title xml:lang="en">Temporal evolution of local seismicity in the island of Vulcano, Italy, in 1988 (TESV_1988)</title>
    <title titleType="TranslatedTitle" xml:lang="it">Evoluzione temporale della sismicità locale nell’isola di Vulcano, Italia, nel 1988</title>
    <title titleType="AlternativeTitle">TESV_1988</title>
  </titles>
  <publisher publisherIdentifier="https://ror.org/00qps9a02" publisherIdentifierScheme="ROR" schemeURI="https://ror.org/">Istituto Nazionale di Geofisica e Vulcanologia (INGV)</publisher>
  <publicationYear>2022</publicationYear>
  <resourceType resourceTypeGeneral="Dataset">earthquake- and other seismic event catalog</resourceType>
  <subjects>
    <subject>earthquakes</subject>
    <subject>seismic events related to fluid dynamic</subject>
    <subject>Vulcano</subject>
    <subject>seismic activity</subject>
  </subjects>
  <contributors>
    <contributor contributorType="ContactPerson">
      <contributorName nameType="Personal">Falsaperla, Susanna</contributorName>
      <givenName>Susanna</givenName>
      <familyName>Falsaperla</familyName>
      <nameIdentifier nameIdentifierScheme="ORCID" schemeURI="https://orcid.org">https://orcid.org/0000-0002-1071-3958</nameIdentifier>
      <affiliation>Istituto Nazionale di Geofisica e Vulcanologia (INGV)</affiliation>
    </contributor>
    <contributor contributorType="Researcher">
      <contributorName nameType="Personal">Privitera, Eugenio</contributorName>
      <givenName>Eugenio</givenName>
      <familyName>Privitera</familyName>
      <nameIdentifier nameIdentifierScheme="ORCID" schemeURI="https://orcid.org">https://orcid.org/0000-0001-9623-1919</nameIdentifier>
      <affiliation>Istituto Nazionale di Geofisica e Vulcanologia (INGV)</affiliation>
    </contributor>
    <contributor contributorType="Researcher">
      <contributorName nameType="Personal">Neri, Giancarlo</contributorName>
      <givenName>Giancarlo</givenName>
      <familyName>Neri</familyName>
      <nameIdentifier nameIdentifierScheme="ORCID" schemeURI="https://orcid.org">https://orcid.org/0000-0002-6775-9965</nameIdentifier>
      <affiliation>University of Messina (UniME)</affiliation>
    </contributor>
    <contributor contributorType="Other">
      <contributorName nameType="Personal">Di Prima, Sergio</contributorName>
      <givenName>Sergio</givenName>
      <familyName>Di Prima</familyName>
      <nameIdentifier nameIdentifierScheme="ORCID" schemeURI="https://orcid.org">https://orcid.org/0000-0002-9668-0287</nameIdentifier>
      <affiliation>Istituto Nazionale di Geofisica e Vulcanologia (INGV)</affiliation>
    </contributor>
    <contributor contributorType="Other">
      <contributorName nameType="Personal">Pellegrino, Alfio</contributorName>
      <givenName>Alfio</givenName>
      <familyName>Pellegrino</familyName>
    </contributor>
    <contributor contributorType="RightsHolder">
      <contributorName nameType="Organizational">Istituto Nazionale di Geofisica e Vulcanologia (INGV)</contributorName>
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  </contributors>
  <dates>
    <date dateType="Coverage">1988-01-01/1988-12-31</date>
    <date dateType="Collected">1988-01-01/1988-12-31</date>
    <date dateType="Issued">2022</date>
    <date dateType="Available">2022-01</date>
  </dates>
  <language>en</language>
  <relatedIdentifiers>
    <relatedIdentifier relatedIdentifierType="DOI" relationType="References" resourceTypeGeneral="JournalArticle">10.1785/bssa0740020655</relatedIdentifier>
    <relatedIdentifier relatedIdentifierType="DOI" relationType="References" resourceTypeGeneral="JournalArticle">10.1029/92jb00518</relatedIdentifier>
    <relatedIdentifier relatedIdentifierType="DOI" relationType="References" resourceTypeGeneral="JournalArticle">10.4401/ag-6033</relatedIdentifier>
    <relatedIdentifier relatedIdentifierType="DOI" relationType="References" resourceTypeGeneral="Dataset">10.13127/vulcano/tsv_js1988</relatedIdentifier>
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  <version>1</version>
  <rightsList>
    <rights rightsURI="info:eu-repo/semantics/openAccess">Open Access</rights>
    <rights rightsURI="https://creativecommons.org/licenses/by/4.0/" rightsIdentifier="cc-by-4.0" rightsIdentifierScheme="SPDX" schemeURI="https://spdx.org/licenses/">Creative Commons Attribution 4.0 International</rights>
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  <descriptions>
    <description xml:lang="en" descriptionType="Abstract">The dataset covers the time span from January 1 to December 31, 1988. It encompasses three classes of seismic events recorded on the island of Vulcano, in Italy. Here the local seismicity has varying origins and characteristics, from seismic events related to fluid dynamics to brittle-failure earthquakes (Falsaperla and Neri, 1986). The dataset sheds light on three classes of signals with increasing seismic energy release, which were recorded before, during, and after a period of volcanic unrest in August 1988 (e.g., Chiodini et al., 1992; Falsaperla, 2021).
For the first class, the dataset provides the hourly occurrence frequency of the local seismic events (mostly microshocks of volcanic origin) that exceeded an amplitude threshold (20 mm) on the paper seismograms of a reference station. The reference station for the counting (named VCR) was close to a large fumarole field.
For the second class, the dataset gives the hourly occurrence frequency of seismic events with origin within about 10 km around La Fossa crater on the island of Vulcano. These events were recorded at at least three stations of the permanent seismic network of the Aeolian Islands. For the interested reader, Falsaperla (2021) provides a catalogue of the hypocenter location for the local earthquakes with magnitude between 1.8 and 2.5, recorded from July to September 1988. Many of these earthquakes were related to the aforementioned volcanic unrest.
For the third class of events, the dataset lists the earthquakes with magnitude greater than 2.5, located within a radius of 15 km from the VCR station. For each earthquake the catalogue provides the hypocentral parameters (UTC origin time, latitude, longitude, and depth in kilometers), duration magnitude, energy (using the magnitude–energy relationship computed for Italian earthquakes by Di Filippo and Marcelli, 1950), and strain release.

Acknowledgments
A group of people actively participated to the seismic monitoring of the Aeolian Islands in the 1980s, contributing in various forms to the acquisition of information. The members of this group were staff of Istituto Internazionale di Vulcanologia of the Italian Consiglio Nazionale delle Ricerche (CNR). In addition to the listed contributors of the dataset, thanks to Professor Antonio Montalto, together with the technicians Angelino Biviano, Mario Marturano, and Salvatore Velardita.</description>
    <description xml:lang="it" descriptionType="Abstract">Il catalogo copre l’intervallo temporale dal 1 gennaio al 31 dicembre 1988. I dati forniti riguardano tre classi di eventi sismici registrati sull’isola di Vulcano in Italia. Qui la sismicità locale ha varia origine e caratteristiche, dagli eventi sismici collegati alla dinamica dei fluidi ai terremoti causati da fratturazione fragile (Falsaperla and Neri, 1986). Il set di dati fa luce su tre classi di segnali, con crescente energia sismica, che sono stati registrati prima, durante e dopo un periodo di “unrest” vulcanico avvenuto nell’agosto del 1988 (e.g., Chiodini et al., 1992; Falsaperla, 2021).
Per la prima classe viene fornita la frequenza di accadimento oraria degli eventi sismici locali (principalmente micro scosse di origine vulcanica) che eccedevano un’ampiezza di soglia di 20 mm sui sismogrammi cartacei ad una stazione di riferimento. La stazione utilizzata per il conteggio era denominata VCR ed era ubicata vicino ad un ampio campo di fumarole.
Per la seconda classe viene fornita la frequenza oraria giornaliera degli eventi sismici con origine entro circa 10 km dal cratere de La Fossa di Vulcano. Questi eventi sono stati registrati da almeno tre stazioni della rete sismica permanente delle isole Eolie. Per il lettore interessato, Falsaperla (2021) fornisce un catalogo della localizzazione ipocentrale dei terremoti locali con magnitudo compressa fra 1.8 e 2.5 registrati da luglio a settembre 1988. Molti di questi terremoti erano legati alla fase di “unrest” vulcanico precedentemente menzionata.
Per la terza classe di eventi il catalogo elenca i terremoti con magnitudo maggiore di 2.5, localizzati entro un raggio di 15 km dalla stazione VCR. Per ogni terremoto il catalogo fornisce i parametri ipocentrali (tempo origine di Greenwich, latitudine, longitudine e profondità in km), magnitudo di durata, energia (utilizzando il rapporto magnitudo-energia calcolato per i terremoti italiani da Di Filippo e Marcelli, 1950) e rilascio di “strain” (radice quadrata dell’energia; in ergs).

Ringraziamenti
Un gruppo di persone ha attivamente partecipato al monitoraggio sismico delle isole Eolie negli anni ottanta. I membri di questo gruppo facevano parte dello staff dell’Istituto Internazionale di Vulcanologia del Consiglio Nazionale delle Ricerche (CNR) italiano. In aggiunta alla lista di coloro che hanno contribuito all’acquisizione dei dati di questo catalogo, si ringrazia il Professor Antonio Montalto insieme ai tecnici Angelino Biviano, Mario Marturano, e Salvatore Velardita.</description>
    <description xml:lang="en" descriptionType="Methods">The hypocentral parameters were calculated by means of the Equivalent Velocity Method by Caccamo and Neri (1984); the local velocity model applied for this calculation was obtained by Falsaperla et al. (1985) by using deep seismic sounding data recorded in the Aeolian Islands.</description>
    <description xml:lang="en" descriptionType="TechnicalInfo">The area of interest is centered in the island of Vulcano, Italy. The reference station for the counting of the local events is VCR (coordinates N38.41°, E14.96°). For the earthquakes with magnitude &gt; 2.5, the epicentral map has the following coordinates: latitude from N38.265° to 38.54°, longitude from E14.78° to 15.13°. The seismic records were continuously acquired by stations belonging to the permanent seismic network of the Aeolian Islands (e.g., Chiodini et al., 1992). The network encompassed short period (1s) seismometers, and was run by Istituto Internazionale di Vulcanologia of the Italian CNR.</description>
    <description xml:lang="en" descriptionType="Other">References
Caccamo, D., and Neri, G. (1984), A new analytic procedure to determine hypocentral parameters of local seismic events. Bull. Seismol.Soc. Am., 74, 655-667, doi.org/10.1785/BSSA0740020655.
Chiodini, G., Cioni, R., Falsaperla, S., Montalto, A., Guidi, M., and Marini, L. (1992), Geochemical and seismological investigations at Vulcano (Aeolian Islands) during 1978–1989. J. Geophys. Res., 97( B7), 11025– 11032, doi:10.1029/92JB00518.
Di Filippo, D., and Marcelli, L. (1950), Magnitudo ed energia dei terremoti in Italia. Annals of Geophysic, 3 (3), 337–348, doi: 10.4401/ag-6033.
Falsaperla, S., Neri, G., and Velardita, S. (1985), Struttura della crosta superiore dell'area delle isole Eolie. Rend. Osserv. Geofis. Reggino, XXIX, 103-111, 1985.
Falsaperla, S., and Neri, G. (1986), Seismic monitoring of volcanoes: Vulcano (southern Italy). Period. Mineral., 55, 143-152, 1986. 
Falsaperla, S. (2021), Tectonic seismicity with M &gt;= 1.8 at the island of Vulcano, Italy, from July to September 1988 (TSV_JS1988). Istituto Nazionale di Geofisica e Vulcanologia (INGV). https://tsd.ct.ingv.it/VolcanicCatalogs/Vulcano/TSV/1988/Jul_Sep/, doi: 10.13127/VULCANO/TSV_JS1988.</description>
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      <geoLocationPlace>Island of Vulcano, Italy</geoLocationPlace>
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        <eastBoundLongitude>15.13</eastBoundLongitude>
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