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  • Open Access English
    Authors: 
    Rémy Bossu; Matthieu Landès; Fréderic Roussel; Robert Steed; Gilles Mazet-Roux; Stacey S Martin; Susan E. Hough;
    Country: Singapore
    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. NRF (Natl Research Foundation, S’pore) MOE (Min. of Education, S’pore) Published version

  • 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: 
    Chevrot, Sébastien; Sylvander, Matthieu; Diaz, Jordi; Martin, Roland; Mouthereau, Frédéric; Manatschal, Gianreto; Masini, Emmanuel; Calassou, Sylvain; Grimaud, Frank; Pauchet, Hélène; +1 more
    Publisher: HAL CCSD
    Countries: France, Spain
    Project: EC | EPOS IP (676564)

    We exploit the data from five seismic transects deployed across the Pyrenees to characterize the deep architecture of this collisional orogen. We map the main seismic interfaces beneath each transect by depth migration of P-to-S converted phases. The migrated sections, combined with the results of recent tomographic studies and with maps of Bouguer and isostatic anomalies, provide a coherent crustal-scale picture of the belt. In the Western Pyrenees, beneath the North Pyrenean Zone, a continuous band of high density/velocity material is found at a very shallow level (~10 km) beneath the Mauleon basin and near Saint-Gaudens. In the Western Pyrenees, we also find evidence for northward continental subduction of Iberian crust, down to 50–70 km depth. In the Eastern Pyrenees, these main structural features are not observed. The boundary between these two domains is near longitude 1.3 °E, where geological field studies document a major change in the structure of the Cretaceous rift system, and possibly a shift of its polarity, suggesting that the deep orogenic architecture of the Pyrenees is largely controlled by structural inheritance. The PYROPE (Pyrenean Observational Portable Experiment) project was supported by the Agence Nationale de la Recherche (ANR) Blanc Programme (project PYROPE, ANR-09- BLAN-0229). We also acknowledge SISMOB, the French seismic mobile pool (a component of the RESIF consortium - http://seismology.resif.fr), for providing us with the seismological instrumentation for the temporary deployments. Field work has been also partially funded by the Spanish Ministry of Economy and Competitiveness through Project MISTERIOS (CGL2013-48601-C2-2-R). Peer reviewed

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

    This deliverable will have a first release, for internal use only, at month 24.

  • 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
    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

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

    Report on specification and documentation of web service interface for geological TCS

  • Open Access
    Authors: 
    Jan Wiszniowski; Nguyen Van Giang; Beata Plesiewicz; Grzegorz Lizurek; Dinh Quoc Van; Le Quang Khoi; Stanislaw Lasocki;
    Publisher: Springer Science and Business Media LLC
    Project: EC | EPOS IP (676564)

    Song Tranh 2 hydropower plant and the reservoir containing backed up water are located in the Quang Nam province (Central Vietnam). The region experiences unusual seismic activity related to the reservoir impoundment, with earthquakes of magnitude up to 4.7. In result of cooperation between the Institute of Geophysics, Vietnam Academy of Sciences and Technology and the Institute of Geophysics, Polish Academy of Sciences a seismic network has been built to facilitate seismic monitoring of the Song Tranh 2 area. The network, operating since August 2013, consists of 10 seismic stations. Here we show that the network is sufficient for advanced data processing. The first results of monitoring of the earthquake activity in Song Tranh 2 area in the period between 2012 and 2014, especially the completeness of catalogs, study and comparisons between water level and the seismic activity suggest direct connection between reservoir exploitation and anthropogenic seismicity.

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

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

  • 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

Advanced search in
Research products
arrow_drop_down
Searching FieldsTerms
Any field
arrow_drop_down
includes
arrow_drop_down
Include:
167 Research products, page 1 of 17
  • Open Access English
    Authors: 
    Rémy Bossu; Matthieu Landès; Fréderic Roussel; Robert Steed; Gilles Mazet-Roux; Stacey S Martin; Susan E. Hough;
    Country: Singapore
    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. NRF (Natl Research Foundation, S’pore) MOE (Min. of Education, S’pore) Published version

  • 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: 
    Chevrot, Sébastien; Sylvander, Matthieu; Diaz, Jordi; Martin, Roland; Mouthereau, Frédéric; Manatschal, Gianreto; Masini, Emmanuel; Calassou, Sylvain; Grimaud, Frank; Pauchet, Hélène; +1 more
    Publisher: HAL CCSD
    Countries: France, Spain
    Project: EC | EPOS IP (676564)

    We exploit the data from five seismic transects deployed across the Pyrenees to characterize the deep architecture of this collisional orogen. We map the main seismic interfaces beneath each transect by depth migration of P-to-S converted phases. The migrated sections, combined with the results of recent tomographic studies and with maps of Bouguer and isostatic anomalies, provide a coherent crustal-scale picture of the belt. In the Western Pyrenees, beneath the North Pyrenean Zone, a continuous band of high density/velocity material is found at a very shallow level (~10 km) beneath the Mauleon basin and near Saint-Gaudens. In the Western Pyrenees, we also find evidence for northward continental subduction of Iberian crust, down to 50–70 km depth. In the Eastern Pyrenees, these main structural features are not observed. The boundary between these two domains is near longitude 1.3 °E, where geological field studies document a major change in the structure of the Cretaceous rift system, and possibly a shift of its polarity, suggesting that the deep orogenic architecture of the Pyrenees is largely controlled by structural inheritance. The PYROPE (Pyrenean Observational Portable Experiment) project was supported by the Agence Nationale de la Recherche (ANR) Blanc Programme (project PYROPE, ANR-09- BLAN-0229). We also acknowledge SISMOB, the French seismic mobile pool (a component of the RESIF consortium - http://seismology.resif.fr), for providing us with the seismological instrumentation for the temporary deployments. Field work has been also partially funded by the Spanish Ministry of Economy and Competitiveness through Project MISTERIOS (CGL2013-48601-C2-2-R). Peer reviewed

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

    This deliverable will have a first release, for internal use only, at month 24.

  • 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
    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

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

    Report on specification and documentation of web service interface for geological TCS

  • Open Access
    Authors: 
    Jan Wiszniowski; Nguyen Van Giang; Beata Plesiewicz; Grzegorz Lizurek; Dinh Quoc Van; Le Quang Khoi; Stanislaw Lasocki;
    Publisher: Springer Science and Business Media LLC
    Project: EC | EPOS IP (676564)

    Song Tranh 2 hydropower plant and the reservoir containing backed up water are located in the Quang Nam province (Central Vietnam). The region experiences unusual seismic activity related to the reservoir impoundment, with earthquakes of magnitude up to 4.7. In result of cooperation between the Institute of Geophysics, Vietnam Academy of Sciences and Technology and the Institute of Geophysics, Polish Academy of Sciences a seismic network has been built to facilitate seismic monitoring of the Song Tranh 2 area. The network, operating since August 2013, consists of 10 seismic stations. Here we show that the network is sufficient for advanced data processing. The first results of monitoring of the earthquake activity in Song Tranh 2 area in the period between 2012 and 2014, especially the completeness of catalogs, study and comparisons between water level and the seismic activity suggest direct connection between reservoir exploitation and anthropogenic seismicity.

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

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

  • 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

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