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  • 05. General::05.02. Data dissemination::05.02.02. Seismological data  (1)
  • Bio-acoustics  (1)
  • 1
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    NEMO-SN1 Abyssal Cabled Observatory in the Western Ionian Sea (2012)
    IEEE / Institute of Electrical and Electronics Engineers Incorporated
    Details
    Publication Date: 2020-02-24
    Description: The “NEutrino Mediterranean Observatory - Submarine Network 1” (NEMO-SN1) seafloor observatory is located in the central Mediterranean Sea, Western Ionian Sea, off Eastern Sicily (Southern Italy) at 2100 m water depth, 25 km from the harbour of the city of Catania. It is a prototype of a cabled deep-sea multiparameter observatory and the first one operating with real-time data transmission in Europe since 2005. NEMO-SN1 is also the first-established node of the “European Multidisciplinary Seafloor and water column Observatory” (EMSO, http://www.emso-eu.org), one of the incoming European large-scale research infrastructures included in the Roadmap of the “European Strategy Forum on Research Infrastructures” (ESFRI, http://cordis.europa.eu/esfri/roadmap.htm) since 2006. EMSO will specifically address long-term monitoring of environmental processes related to Marine Ecosystems, Climate Change and Geo-hazards. NEMO-SN1 has been deployed and developed over the last decade thanks to Italian funding and to the EC project “European Seas Observatory NETwork - Network of Excellence” (ESONET-NoE, 2007-2011) that funded the “Listening to the Deep Ocean - Demonstration Mission” (LIDO-DM) and a technological interoperability test (http://www.esonet-emso.org/). NEMOSN1 is performing geophysical and environmental long-term monitoring by acquiring seismological, geomagnetic, gravimetric, accelerometric, physico-oceanographic, hydroacoustic, bio-acoustic measurements. Scientific objectives include studying seismic signals, tsunami generation and warnings, its hydroacoustic precursors, and ambient noise characterisation in terms of marine mammal sounds, environmental and anthropogenic sources. NEMO-SN1 is also an important test-site for the construction of the “Kilometre-Cube Underwater Neutrino Telescope” (KM3NeT, http://www.km3net.org/), another large-scale research infrastructure included in the ESFRI Roadmap based on a large volume neutrino telescope. The description of the observatory and its most recent implementations is presented. On 9th June, 2012 NEMO-SN1 was successfully deployed and is working in real-time.
    Description: Published
    Description: 358 - 374
    Description: 1.8. Osservazioni di geofisica ambientale
    Description: JCR Journal
    Description: restricted
    Keywords: NEMO-SN1 cabled observatory ; Geo-hazards ; Bio-acoustics ; High-energy astrophysics ; EMSO ; KM3NeT ; 03. Hydrosphere::03.01. General::03.01.04. Ocean data assimilation and reanalysis ; 03. Hydrosphere::03.01. General::03.01.08. Instruments and techniques ; 03. Hydrosphere::03.02. Hydrology::03.02.04. Measurements and monitoring ; 03. Hydrosphere::03.02. Hydrology::03.02.07. Instruments and techniques
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: article
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  • 2
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    Seafloor seismic noise at Central Eastern Mediterranean sites (2014)
    Seismological Society of America
    Details
    Publication Date: 2017-04-04
    Description: This work focuses on long-term broadband seismic signals acquired in shallow and deep seafloor sites of the Central-Eastern Mediterranean. We generated a reference model of background seismic noise based on seafloor observatories data. The observatories have been deployed at sites in the Ionian Sea, Tyrrhenian Sea, Marmara Sea and Gulf of Corinth. We concentrate on interesting and peculiar features of the noise signal in the frequency band 0.003-50 Hz. The main contribution in the short period band 〉5Hz (〈2s) comes from anthropic noise. In this band we find a peak around 0.8Hz (1.25s) which appears to be a persistent characteristic of the Mediterranean basins. Seasonal variations (summer-winter) are visible in the microseismic band 0.05-0.5Hz (2-20s). In the Ionian and Tyrrhenian deep seafloor sites we can distinguish the splitting of the DF in the long period (LPDF) and the short period (SPDF) peaks. The seasonal variations of the ratio between the LPDF and the SPDF amplitudes suggests that the SPDF depends on sea wave regime generated by local winds, while the LPDF can be considered a feature of deep seafloor sites not far from the coastlines. The shallow enclosed Mediterranean sites are characterized by an energetic bump between 0.3-0.4 Hz, which could be explained by a combination of effects which depend on bathymetry, water depth and local seastate.
    Description: Published
    Description: 1019-1033
    Description: 1T. Geodinamica e interno della Terra
    Description: JCR Journal
    Description: restricted
    Keywords: seismic data quality ; long-time series ; seismic background noise ; seafloor observatories ; Mediterranean Sea ; EMSO Research infrastructure ; deep and shallow water ; 05. General::05.02. Data dissemination::05.02.02. Seismological data
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: article
    Location Call Number Expected Availability
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