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    facet.materialart.
    Unknown
    GFZ Data Services
    Publication Date: 2024-02-21
    Description: Abstract
    Description: The complete network consisted of 11 stations deployed on the island of Fogo, Cape Verde. Eight of the stations formed an arraywith an aperture of 700 m, deployed in the south of the island near the village of Achada Furna. Seven of the array stations were equipped with 3-component 4.5 Hz geophones, one with a Trillium Compact (broad-band) sensor. The remaing three stations were distributed across the island and equipped with Trillium Compact sensors. Data were recorded continuously from October 2015 to December 2016 with a sample rate of 200 Hz. Due to limited data storage, there are four recording gaps (20/12/2015-14/01/2016; 28/03/2016-04/04/2016; 17/06/2016-18/07/2016; 01/10/2016-18/10/2016). The network served as a pilot study for the more comprehensive study, FoMaPS, from 2017 to 2018 (FDSN code 9J), involving station deployments on Fogo and Brava. Waveform data are available from the GEOFON data centre, under network code 5M, and are embargoed until July 2021.
    Keywords: Broadband seismic waveforms ; Seismic monitoring ; temporary local seismic network ; Monitoring system ; Seismological stations ; In Situ/Laboratory Instruments 〉 Magnetic/Motion Sensors 〉 Seismometers ; In Situ Land-based Platforms 〉 GEOPHYSICAL STATIONS/NETWORKS
    Type: Dataset , Seismic Network
    Format: ~300G
    Format: .mseed
    Format: XML
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  • 3
    facet.materialart.
    Unknown
    GFZ German Research Centre for Geosciences
    In:  Scientific Technical Report STR - Data | GIPP Experiment and Data Archive
    Publication Date: 2021-02-09
    Description: The FOSA (FOgo Seismic Array) project has been carried out from October 2015 to December 2016 to investigate the seismicity of Fogo volcano after its eruption in 2014/2015. Fogo is the only volcano of the Cape Verde archipelago with reported historic eruptions. The eruptions occur frequently with an interval of about 20 years. However, the structure and extent of the related volcanic plumbing system are not well understood. The focus of the FOSA project was on the detection of ongoing magmatic activity and information about the plumbing system, using seismic array techniques. The array of the FOSA study was operated from October 2015 to December 2016, close to the village Achada Furna. From January 2016 we complemented the network with three additional broadband stations for an improved event detection and localization.
    Language: English
    Type: info:eu-repo/semantics/report
    Format: application/pdf
    Format: application/pdf
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  • 4
    facet.materialart.
    Unknown
    GFZ Data Services
    Publication Date: 2022-03-27
    Description: The complete network consisted of eleven stations deployed on the island of Fogo, Cape Verde. Eight of the stations formed an array with an aperture of 700 m, deployed in the south of the island near the village of Achada Furna. Seven of the array stations were equipped with 3-component 4.5 Hz geophones, one with a Trillium Compact (broad-band) sensor. The remaing three stations were distributed across the island and equipped with Trillium Compact sensors. Data were recorded continuously from October 2015 to December 2016 with a sample rate of 200 Hz. Due to limited data storage, there are four recording gaps (20/12/2015-14/01/2016; 28/03/2016-04/04/2016; 17/06/2016-18/07/2016; 01/10/2016-18/10/2016). The network served as a pilot study for the more comprehensive study, FoMaPS, from 2017 to 2018 (FDSN code 9J), involving station deployments on Fogo and Brava.
    Language: English
    Type: info:eu-repo/semantics/workingPaper
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  • 5
    Publication Date: 2021-01-18
    Description: During the first two days of August 2016 a seismic crisis occurred on Brava, Cabo Verde, which – according to observations based on a local seismic network – was characterized by more than a thousand volcano-seismic signals. Brava is considered an active volcanic island, although it has not experienced any historic eruptions. Seismicity significantly exceeded the usual level during the crisis. We report on results based on data from a temporary seismic-array deployment on the neighbouring island of Fogo at a distance of about 35 km. The array was in operation from October 2015 to December 2016 and recorded a total of 1343 earthquakes in the region of Fogo and Brava; 355 thereof were localized. On 1 and 2 August we observed 54 earthquakes, 25 of which could be located beneath Brava. We further evaluate the observations with regards to possible precursors to the crisis and its continuation. Our analysis shows a significant variation in seismicity around Brava, but no distinct precursory pattern. However, the observations suggest that similar earthquake swarms commonly occur close to Brava. The results further confirm the advantages of seismic arrays as tools for the remote monitoring of regions with limited station coverage or access.
    Language: English
    Type: info:eu-repo/semantics/article
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