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Deep and Shallow Solid-Earth Structures Reconstructed with Sequential Integrated Inversion (SII) of Seismic and Gravity Data 总被引:3,自引:0,他引:3
In this paper, the possibility of using simultaneously seismic and gravity data, for the reconstruction of solid-Earth structures,
has been investigated through the use of an algorithm which allows joint efficient and reliable optimisation of compressional
velocity and mass density parameters. We view the measured data as a realisation of a stochastic process generated by the
physical parameters to be sought and we construct a “probability density function” which includes three kinds of information:
information derived from gravity measurements; information derived from seismic travel time inversion and information on the
physical correlation among density and velocity parameters. We show that combining data has a beneficial effect on the inversion
since: it makes the problem more stable and as a consequence, providing that the quality of data is sufficiently high, enables
more accurate and reliable reconstruction of the unknown parameters. In this context, we look forward the GOCE mission, which
promises high spatial resolution (100–200 km) and accurate (1–2 mGals) gravity data.
We show results obtained from data sets calculated for a lateral inhomogeneous earth synthetic model and from seismic and
gravity field data analysed:
— in the framework of TOMOVES (TOMOgraphy of Mt. VESuvius) experiment, an European project aiming at reconstructing the 3-D
image of Mt. Vesuvius volcano and the crust underneath. using high resolution seismic tomography techniques and other geophysical
methods;
— for a profile inserted in a project aiming at reconstructing the crustal structure between Corsica and the Northern Appennines
which crosses the Ligurian Sea and cuts the Ligurian Appennines W of La Spezia, extending up to Parma.
This revised version was published online in August 2006 with corrections to the Cover Date. 相似文献
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