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208 Research products, page 1 of 21

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  • Open Access
    Authors: 
    Rémy Bossu; Matthieu Landès; Fréderic Roussel; Robert Steed; Gilles Mazet-Roux; Stacey S Martin; Susan E. Hough;
    Project: EC | EPOS IP (676564)

    The collection of earthquake testimonies (i.e., qualitative descriptions of felt shaking) is essential for macroseismic studies (i.e., studies gathering information on how strongly an earthquake was felt in different places), and when done rapidly and systematically, improves situational awareness and in turn can contribute to efficient emergency response. In this study, we present advances made in the collection of testimonies following earthquakes around the world using a thumbnail‐based questionnaire implemented on the European‐Mediterranean Seismological Centre (EMSC) smartphone app and its website compatible for mobile devices. In both instances, the questionnaire consists of a selection of thumbnails, each representing an intensity level of the European Macroseismic Scale 1998. We find that testimonies are collected faster, and in larger numbers, by way of thumbnail‐based questionnaires than by more traditional online questionnaires. Responses were received from all seismically active regions of our planet, suggesting that thumbnails overcome language barriers. We also observed that the app is not sufficient on its own, because the websites are the main source of testimonies when an earthquake strikes a region for the first time in a while; it is only for subsequent shocks that the app is widely used. Notably though, the speed of the collection of testimonies increases significantly when the app is used. We find that automated EMSC intensities as assigned by user‐specified thumbnails are, on average, well correlated with “Did You Feel It?” (DYFI) responses and with the three independently and manually derived macroseismic datasets, but there is a tendency for EMSC to be biased low with respect to DYFI at moderate and large intensities. We address this by proposing a simple adjustment that will be verified in future earthquakes.

  • Open Access
    Authors: 
    Pérez-Monserrat, Elena Mercedes; Charco Romero, María; Fort González, Rafael;
    Publisher: Instituto de Geociencias, IGEO (CSIC-UCM)
    Country: Spain
    Project: EC | CRODINAS (230826), EC | EPOS (262229)

    El objetivo de esta 1ª Reunión Científica del IGEO es presentar la investigación desarrollada y las Unidades Técnicas de las que dispone el IGEO, mostrado su potencial investigador y facilitando la colaboración con otros organismos. En la reunión se presentaron las diferentes sublíneas de investigación que comprende el IGEO, comunicaciones cortas de investigaciones concretas y la actividad realizada por sus Unidades Técnicas de Investigación, a disposición de toda la comunidad científica. El IGEO nace con un importante compromiso para potenciar las investigaciones en Geología, Geodesia y Geofísica. Hay una excelente oportunidad para desarrollar ideas y metodologías que permitan la interacción de las tres disciplinas e incremente el valor del trabajo llevado a cabo, que sea útil para toda la comunidad científica y, sobre todo, para la sociedad. [ABSTRACT] The aim of the 1st Scientific Meeting of IGEO is to introduce the research developed and the Technical Units available in the IGEO, shown their research potential and providing collaboration with other agencies. The meeting presented the different research sublines involving the IGEO, short communications dealt with specific investigations and the activity conducted by its Research Technical Units, available to the entire scientific community. The IGEO born with a commitment to enhance research in Geology, Geodesy and Geophysics. There is an excellent opportunity to develop ideas and methodologies in order to let the interaction of these three disciplines and to increase the value of the research carried out, to be useful for the scientific community and, above all, for society.

  • Open Access
    Project: EC | EPOS IP (676564)

    This deliverable includes input forms and validation processes for metadata to catalogue This deliverable will have a first release, for internal use only, at month 18.

  • Open Access English
    Authors: 
    Federico Di Traglia; Claudio De Luca; Mariarosaria Manzo; Teresa Nolesini; Nicola Casagli; Riccardo Lanari; Francesco Casu;
    Country: Italy
    Project: EC | EPOS SP (871121)

    Abstract We present a joint exploitation of space-borne and ground-based Synthetic Aperture Radar Interferometry (InSAR) and Multi Temporal (MT) InSAR measurements for investigating the Stromboli volcano (Italy) deformation phenomena. In particular, we focus our analysis on three periods: a) the time interval following the 2014 flank eruption, b) the July–August 2019 eruption and c) the following post-eruptive phase. To do this, we take advantage from an unprecedented set of space-borne and ground-based SAR data collected from April 2015 up to November 2019 along two (one ascending and one descending) Sentinel-1 (S-1) tracks, as well as, in the same period, by two ground-based systems installed along the Sciara del Fuoco northern rim. Such data availability permitted us to first characterize the volcano long-term 3D deformation behavior of the pre-eruptive period (April 2015–June 2019), by jointly inverting the space-borne and ground-based InSAR measurements. Then, the GB-SAR measurements allowed us to investigate the sin-eruptive time span (3rd July 2019 – 30th August 2019) which revealed rapid deformation episodes (e.g. more than 30 mm/h just 2 min before the 3rd July 2019 explosion) associated with the eruptive activity, that cannot be detected with the weekly S-1 temporal sampling. Finally, the S-1 measurements permitted to better constrain the post 2019 eruption deformations (31st August 2019 – 5th November 2019), which are mainly located outside the GB-SAR sensed area. The presented results demonstrate the effectiveness of the joint exploitation of the InSAR measurements obtained through satellite and terrestrial SAR systems, highlighting their strong complementarity to map and interpret the deformation phenomena affecting volcanic areas.

  • Open Access
    Project: EC | EPOS IP (676564)

    Report on Governance and legal framework for TCS implementation including data policy and access rules. This deliverable will have a first release, for internal use only, at month 6

  • Publication . Article . Conference object . 2014
    Open Access English
    Authors: 
    Keith G. Jeffery; Anne Asserson; Nikos Houssos; Valérie Brasse; Brigitte Jörg;
    Publisher: Elsevier
    Countries: United Kingdom, Norway, Norway
    Project: EC | PAASAGE (317715), EC | ENGAGE (283700), EC | EPOS (262229), EC | PAASAGE (317715), EC | ENGAGE (283700), EC | EPOS (262229)

    OGD (Open Government Data) is provided from government departments for transparency and to stimulate a market in ICT services for industry and citizens. Research datasets from publicly funded research commonly are associated with the open scholarly publications movement. However, the former world commonly is derived from the latter with generalisation and summarisation. There is advantage in a user of OGD being able to ‘drill down’ to the underlying research datasets. OGD encourages cross-domain research because the summarized data from different domains is more easily relatable. Bridging across the two worlds requires rich metadata; CERIF (Common European research Information Format) has proved itself to be ideally suited to this requirement. Utilising the research datasets is data-intensive science, a component of e-Research. Data-intensive science also requires access to an e-infrastructure. Virtualisation of this e-infrastructure optimizes this. publishedVersion

  • Publication . Project deliverable
    Open Access
    Project: EC | EPOS IP (676564)

    Final Report to assess the success of the implementation phase and its management. It includes Ethics Issues.

  • Publication . Project deliverable
    Open Access
    Project: EC | EPOS IP (676564)

    Report on brokerage initiatives aimed at promoting interaction with national research organizations, funding agencies, industry, and other stakeholders inside and outside the EPOS community. This deliverable will have a first release, for internal use only, at month 24.

  • Open Access
    Authors: 
    Dr. Dimitrios G. Anastasiou; Xanthos Papanikolaou; Dr. Athanassios Ganas; Prof. Demitris Paradissis;
    Publisher: Zenodo
    Project: EC | EPOS IP (676564), EC | EPOS IP (676564)

    {"references": ["[1] Contribution to EPOS-IP WP10 STRAIN PRODUCT, Task 10.6 GNSS Products - Guidelines for DDSS Strain-rate derivation maps, A. Ganas, K. Chousianitis, version: 20 December 2016", "[2] Shen, Z.-K., M. Wang, Y. Zeng, and F. Wang, (2015), Strain determination using spatially discrete geodetic data, Bull. Seismol. Soc. Am., 105(4), 2117-2127, doi: 10.1785/0120140247.", "[3] Veis, G., Billiris, H., Nakos, B., and Paradissis, D. (1992), Tectonic strain in Greece from geodetic measurements, C. R. Acad. Sci. Athens, 67:129\u2014166.", "[4] Anastasiou D., Ganas A., Legrand J., Bruyninx C., Papanikolaou X., Tsironi V. and Kapetanidis V. (2019). Tectonic strain distribution over Europe from EPN data. EGU General Assembly 2019, Geophysical Research Abstracts, Vol. 21, EGU2019-17744-1"]} StrainTool allows the estimation of Strain Tensor parameters, on the Earth's crust, given a list of data points, aka points on the Earth along with their tectonic velocities. Also provided are output parameters related to the plotting of strains/strain-fields using the Generic Mapping Tools software (http://www.soest.hawaii.edu/gmt/ ). The algorithm to calculate horizontal strains (or strain rates) through interpolation of GNSS velocities is based on the Shen et al (2015) method (doi: 10.1785/0120140247) This software package has received funding from the European Union's Horizon 2020 research and innovation programme EPOS under grant agreement N°676564

  • Open Access
    Project: EC | EPOS IP (676564)

    This deliverable will have two additional releases, for internal use only, at month 6 and 30

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