Submitted as: data description paper | 23 Sep 2019
Review status
This discussion paper is a preprint. A revision of the manuscript is under review for the journal Earth System Science Data (ESSD).
Integrated dataset of deformation measurements in fractured volcanic tuff and meteorological data (Coroglio coastal cliff, Naples, Italy)
Fabio Matano1,Mauro Caccavale1,2,Giuseppe Esposito1,3,Alberto Fortelli4,Germana Scepi5,Maria Spano5,and Marco Sacchi1Fabio Matano et al. Fabio Matano1,Mauro Caccavale1,2,Giuseppe Esposito1,3,Alberto Fortelli4,Germana Scepi5,Maria Spano5,and Marco Sacchi1
1Istituto di Scienze Marine (ISMAR), Consiglio Nazionale delle Ricerche (CNR), Naples, 80133, Italy
2Istituto Nazionale di Geofisica e Vulcanologia (INGV), Osservatorio Vesuviano, Naples, 80124, Italy
3Istituto di Ricerca per la Protezione Idrogeologica (IRPI), Consiglio Nazionale delle Ricerche (CNR), Rende, 87030, Italy
4Centro Interdipartimentale di Ricerca, Laboratorio di Urbanistica e di Pianificazione Territoriale "Raffaele d'Ambrosio 10 (LUPT), Federico II University, Naples, 80132, Italy
5Dipartimento di Economia e Statistica, Federico II University, Naples, 80126, Italy
1Istituto di Scienze Marine (ISMAR), Consiglio Nazionale delle Ricerche (CNR), Naples, 80133, Italy
2Istituto Nazionale di Geofisica e Vulcanologia (INGV), Osservatorio Vesuviano, Naples, 80124, Italy
3Istituto di Ricerca per la Protezione Idrogeologica (IRPI), Consiglio Nazionale delle Ricerche (CNR), Rende, 87030, Italy
4Centro Interdipartimentale di Ricerca, Laboratorio di Urbanistica e di Pianificazione Territoriale "Raffaele d'Ambrosio 10 (LUPT), Federico II University, Naples, 80132, Italy
5Dipartimento di Economia e Statistica, Federico II University, Naples, 80126, Italy
Received: 08 Aug 2019 – Accepted for review: 29 Aug 2019 – Discussion started: 23 Sep 2019
Abstract. Along the coastline of the Campi Flegrei volcanic district, near Naples (Italy), severe retreat processes affect a large part of the coastal cliffs, mainly made of fractured volcanic tuff and pyroclastic deposits. Progressive fracturing and deformation of rocks can lead to hazardous sudden slope failures on coastal cliffs. Among the triggering mechanisms, the most relevant are related to meteorological factors, such as precipitation, freezing conditions, and thermal expansion due to solar heating of rock surfaces. In this paper, we present a database of measurement time series taken over a period of ∼ 4 years (Dec 2014–Oct 2018), referred to the deformations of selected tuff blocks in the Coroglio coastal cliff. The monitoring system is implemented on five unstable tuff blocks and is formed by nine crackmeters and two tiltmeters equipped with internal thermometers. The system is coupled with a total weather station, measuring rain, temperature, wind and atmospheric pressure operating since January 2014 up to Dec 2018. A measurement frequency of 10 and 30 minutes has been respectively set for meteorological and deformation sensors. The aim of the measurements is to assess the magnitude and temporal pattern of rock block deformations (fracture opening and block movements) before block failure and their correlation with selected meteorological parameters. The results of a multivariate statistical analysis of the measured time series suggest a close correlation between temperature and deformation trends. The recognized cyclic, sinusoidal changes in the width (opening/closing) of fractures and tuff blocks rotations are ostensibly linked to multiscale (i.e. daily, seasonal and annual) temperature variations. Some trends of cumulative multi-temporal changes have been also recognized. The full databases are freely available online at https://doi.org/10.1594/PANGAEA.896000 (Matano et al., 2018) and https://doi.org/10.1594/PANGAEA.899562 (Fortelli et al., 2019).
Measurements of deformation in fractured volcanic tuffs, Coroglio coastal cliff, Naples, Italy.Matano, F., Caccavale, M., and Sacchi, M. https://doi.org/10.1594/PANGAEA.896000
Continuous meteorological monitoring at Cape Posillipo (Denza Institute weather station - Naples - Campania Region - Italy) during the period January 2014 - December 2018.Fortelli, A., Matano F., and Sacchi, M. https://doi.org/10.1594/PANGAEA.899562
Fabio Matano et al.
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Short summary
Along the coastline of the Campi Flegrei volcanic district, Naples, Italy, severe retreat processes affect the tuff coastal cliffs causing hazardous slope failures. An integrated monitoring system coupled with a weather station is active since 2014. The measurements allowed to assess the magnitude and temporal pattern of rock block deformations before failure and their correlation with meteorological parameters. A close correlation between temperature and deformation trends has been recognized.
Along the coastline of the Campi Flegrei volcanic district, Naples, Italy, severe retreat...