Description
Chair Prof. N. Beverini
The unwanted noise of ring lasers (whenever seismic wave fields perturb their measurements of Earth’s rotation rate) has led to a new field: rotational seismology. The additional ground motion components (i.e. rotation around three orthogonal axes) had been widely ignored, as they are very difficult to measure. Yet, when combined with collocated standard seismometers (three components of...
Compared with the surface, deep underground laboratories are characterized with ‘super-quiet’ and ‘ultra-clean’ environment, which could be a perfect experimental platform for long-term and high-precision geophysical observation and relevant research (Gaffet et al.,2003; Rosat et al.,2016; Simonelli et al.,2016; Bruno & Fulgione, 2019; Wang et al.,2022). Since 1950s, many underground...
In the field of gravitational waves detectors, seismic activity is a source of noise that can affect the sensitivity of the apparatus in many different ways. The most direct way consists in the shaking of the test masses induced by seismic activity; nonetheless, test masses can also be moved by a time-dependent gravity gradient generated by seismic activity (the so called Newtonian Noise)....
At the beginning of 2023 the STRIC project started under the PNRR (EU funding).
This proposal includes a part linked to the purchase of instrumentation for underground geophysics in the INFN LNGS.
In particular, it is foreseen:
- the financing, together with the INFN, of the GINGER experiment (ring laser with an opening of about 5 meters);
- installation of a superconducting gravimeter to...
In Italy, gravimetry is largely carried out since ’80 to study and monitoring active volcanoes of central-southern and insular Italy, but was not extensively applied in seismic areas, except in Central Italy, where gravity measurements have been performed since 2018, aimed to study the dynamics of the main tectonic processes, also including absolute stations already present and measured in the...
Near field recordings and thus finite source inversions of volcano-induced events often
suffer from unaccounted effects of local tilt, saturation of classical instrumentation,
unknown shallow velocity structure and doubtful orientation of the instruments. In addition, if the station number is limited the results of moment tensor inversions are very often not well constrained. Recent advances...
