The Seismic Signature of the Eifel Plume

摘要: In 1997/98 the seismological Eifel Plume experiment was conducted in Belgium, France, Germany and Luxembourg to record a comprehensive dataset for several analysis techniques. Here we summarise main points about field experiment, 3D tomography studies using compressional (P) shear (S) waves of P-coda scattering characteristics. Our seismic models are compared with results from surface wave dispersion studies, teleseismic shear-wave splitting receiver functions. The contain as common feature low-velocity anomaly upper mantle. This starts at 50–60 km depth reaches down least 410 depth. velocity reduction up 2% 5% its part (50–100 depth). lower mantle is 1% both types. diameter this 100–120 km. As cause infer increased ambient temperatures 100–150 °C. At 50–100 there may be also partial melt. We interprete small upper-mantle plume that buoyantly upwells transition zone melt just below continental lithosphere possibly greater activity documented by Quaternary volcanic fields. Solidified magma chambers dykes inferred strong discovered coda analyses.