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Preprints
https://doi.org/10.5194/sed-3-43-2011
© Author(s) 2011. This work is distributed under
the Creative Commons Attribution 3.0 License.
https://doi.org/10.5194/sed-3-43-2011
© Author(s) 2011. This work is distributed under
the Creative Commons Attribution 3.0 License.

  31 Jan 2011

31 Jan 2011

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This preprint was under review for the journal SE. A revision for further review has not been submitted.

Measurement of absolute gravity acceleration in Firenze

M. de Angelis1,2,3, F. Greco4, A. Pistorio4,5, N. Poli1, M. Prevedelli6, G. Saccorotti7, F. Sorrentino1,3, and G. M. Tino1 M. de Angelis et al.
  • 1Dipartimento di Fisica e Astronomia and LENS, Università di Firenze e INFN Sez. di Firenze, via Sansone 1, Polo Scientifico, 50019 Sesto Fiorentino (Firenze), Italy
  • 2Istituto di Fisica Applicata CNR, via Madonna de Piano 10, 50019 Sesto Fiorentino (FI), Italy
  • 3Istituto di Cibernetica CNR, via Campi Flegrei 34, 80078 Pozzuoli (NA), Italy
  • 4Istituto Nazionale di Geofisica e Vulcanologia, sez. di Catania, P.zza Roma 2, 95125 Catania, Italy
  • 5Dipartimento Elettrico, Elettronico e Sistemistico – Università degli Studi di Catania, Italy
  • 6Dipartimento di Fisica, Università di Bologna, via Irnerio 46, 40127 Bologna, Italy
  • 7Istituto Nazionale di Geofisica e Vulcanologia, sez. di Pisa, via della Faggiola 32, 56126 Pisa, Italy

Abstract. This paper reports the results from the accurate measurement of the acceleration of gravity g taken at two separate premises in the Polo Scientifico of the University of Firenze (Italy). In these laboratories, two separate experiments aiming at measuring the Newtonian constant and testing the Newtonian law at short distances are in progress. Both experiments require an independent knowledge on the local value of g. The only available datum, pertaining to the italian zero-order gravity network, was taken more than 20 years ago at a distance of more than 60 km from the study site. Gravity measurements were conducted using an FG5 absolute gravimeter, and accompanied by seismic recordings for evaluating the noise condition at the site. The absolute accelerations of gravity at the two laboratories are (980 492 160.6 ± 4.0) μGal and (980 492 048.3 ± 3.0) μGal for the European Laboratory for Non-Linear Spectroscopy (LENS) and Dipartimento di Fisica e Astronomia, respectively. Other than for the two referenced experiments, the data here presented will serve as a benchmark for any future study requiring an accurate knowledge of the absolute value of the acceleration of gravity in the study region.

M. de Angelis et al.

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