E-GRAAL (Earthquake GRAvity ALerts) kick-off meeting APC laboratory

483A Malevitch (APC)

483A Malevitch


10 rue Alice Domon et Leonie Duquet 75013 Paris


The goal of the E-GRAAL project is to study the feasibility of a new earthquake early-warning system using the detection of the gravity perturbation during the fault rupture


Organisation: Matteo Barsuglia (APC), Jean-Paul Montagner (IPGP)

    • 9:00 AM 10:30 AM
      Introduction and status review talks
      • 9:00 AM
        Presentation of the E-GRAAL project 30m
        Speaker: M.Barsuglia (APC)
      • 9:30 AM
        Status review of earthquake early warning systems and future prospects 30m
        Speaker: Maren Boese (ETH)
      • 10:00 AM
        Measurements of time-varying gravity using satellites 30m
        Speaker: Isabelle Panet (IPGP)
    • 10:30 AM 11:00 AM
      Discussion + Coffee 30m
    • 11:00 AM 1:00 PM
      Transient gravity signals from earthquakes: computation and data-analysis (I)
      • 11:00 AM
        Analytical computations of transient gravity signals from earthquakes 30m
        Speaker: J.-P.Ampuero (Caltech)
      • 11:30 AM
        Computation of transient gravity signals with earth normal modes - overview and open problems 30m
        Speaker: K.Juhel (IPGP)
      • 12:00 PM
        Earthquake signal detection with gravity detectors - preliminary analysis 30m
        Speaker: Jean-Paul Ampuero (Caltech)
      • 12:30 PM
        Discussion 30m
    • 1:00 PM 2:00 PM
      Lunch 1h
    • 2:00 PM 4:00 PM
      Detector feasibility
      • 2:00 PM
        Overview of seismology instruments and their sensitivities 30m
        Speaker: P.Bernard (IPGP)
      • 2:30 PM
        TOBA experience and future plans 30m
        Speaker: Ayaka Shoda (Tokyo University)
      • 3:00 PM
        Experience with sub-Hz metrology at APC 30m
        Speaker: H.Halloin (APC)
      • 3:30 PM
        Atom interferometry gravity gradiometers 30m
        Speaker: F.sorrentino (INFN Genova)
    • 4:00 PM 4:30 PM
      Discussion + coffee 30m
    • 4:30 PM 6:00 PM
      Transient gravity signals from earthquakes: computation and data analysis (II)
      • 4:30 PM
        Search for a transient gravity signal from the Tohoku 2011 earthquake 1h
        Speaker: J.-P.Montagner and K.JUhel (IPGP)
      • 5:30 PM
        Open problems and ideas on data analysis with gravity detectors 30m
        Speaker: Eric Chassande-Mottin (APC)
    • 6:00 PM 7:00 PM
      Summary and discussion 1h
      Speaker: M.Barsuglia (APC)
    • 7:30 PM 10:30 PM
      Dinner 3h