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| Titel |
Single-Station Passive Seismic Stratigraphy for the characterization of subsurface structure of the Valtellina valley (central Alps, northern Italy) |
| VerfasserIn |
M. Mele, A. Bini, S. Bassi, M. Giudici, M. Monti, M. Azzola |
| Konferenz |
EGU General Assembly 2012
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 14 (2012) |
| Datensatznummer |
250063600
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| Zusammenfassung |
| The reconstruction of the subsurface structure of alpine valleys plays a key-role in
the evaluation of their genesis, entrenchment and tectonic evolution. As a matter
of fact, their characterization is strictly dependent on borehole data (water wells,
shallow geognostic logs) and land based, deep seismic reflection/refraction lines;
unfortunately, the availability of these datasets is often limited by economic and logistical
limitations.
In this work the subsurface structure of the Valtellina buried valley (central Alps, northern
Italy) was investigated by the means of Single-Station Passive Seismic Stratigraphy
(S-SPSS), which yields the 1D shear velocity (Vs) profiles, based on the Horizontal to
Vertical Spectral Ratios (HVSR) of microtremors produced by Raleigh waves trapped in the
ground and provided by measurements of the resonance frequencies produced by a layered
seismic stratigraphy.
The study area is the central part of Valtellina, W-E oriented along the Insubric line and
drained by the Adda river. The sedimentary succession is known by shallow ( |
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