Connection between 222Rn emission and geophysical-geochemical parameters recorded during the volcanic unrest at Campi Flegrei caldera (2011-2017)

被引：12

作者：

Ambrosino, F. ^{[1
,2
]}

Sabbarese, C. ^{[1
,2
]}

Roca, V ^{[2
]}

Giudicepietro, F. ^{[3
]}

De Cesare, W. ^{[3
]}

机构：

[1] Univ Campania Luigi Vanvitelli, Dept Math & Phys, Viale Lincoln 5, I-81100 Caserta, Italy

[2] Natl Inst Nucl Phys INFN, Branch Naples, Via Cinthia 21, I-80126 Naples, Italy

[3] Natl Inst Geophys & Volcanol INGV, Vesuvius Observ, Naples Branch, Via Diocleziano 328, I-80124 Naples, Italy

来源：

APPLIED RADIATION AND ISOTOPES | 2020年 / 166卷

关键词：

Radon; CO2; Fumarolic tremor; Campi flegrei; Time series analysis; Volcanic unrest; RADON TIME-SERIES; NEURAL-NETWORK; FAULT SYSTEM; SOIL-GAS; ANOMALIES; SPECTRUM; LEVEL; POWER; IDENTIFICATION; DECOMPOSITION;

D O I：

10.1016/j.apradiso.2020.109385

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Studies concerning Rn-222 emission from soils are growing interest in the Earth Sciences, due to the gas potential as a tracer of natural phenomena. This paper presents a study of radon monitoring in two sites of Campi Flegrei caldera (Neaples, Italy) during the period July 1, 2011-December 31, 2017. This area was characterized by several phases of volcanic unrest. A hybrid method based on Multiple Linear Regression + Remote Radon Estimation method + Singular Spectrum Analysis (MLR + RRE + SSA) is developed for the trend extraction and the identification of anomalies in the time series of Rn-222. The results are compared with several routinely used geo-indicators of the caldera unrest. The comparisons show strong correlation among the signals. The present study proves the Rn-222 is a potential indicator of the evolution of a volcanic crisis.

引用

页数：7

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