Integrated tomographic methods for seismic imaging and monitoring of volcanic caldera structures and geothermal areas

被引：21

作者：

Amoroso, O. ^{[1
]}

Festa, G. ^{[1
]}

Bruno, P. P. ^{[2
]}

D'Auria, L. ^{[3
,8
]}

De Landro, G. ^{[1
]}

Di Fiore, V. ^{[4
]}

Gammaldi, S. ^{[1
]}

Maraio, S. ^{[5
]}

Pilz, M. ^{[6
]}

Roux, P. ^{[7
]}

Russo, G. ^{[1
]}

Serlenga, V. ^{[1
,9
]}

Serra, M. ^{[1
]}

Woith, H. ^{[6
]}

Zollo, A. ^{[1
]}

机构：

[1] Univ Naples Federico II, Dept Phys Ettore Pancini, Naples, Italy

[2] Khalifa Univ Sci & Technol, Dept Geosci, Abu Dhabi, U Arab Emirates

[3] Osserv Vesuviano, Ist Nazl Geofis & Vulcanol, Naples, Italy

[4] Ist Ambiente Marino Costiero IAMC CNR, Naples, Italy

[5] Univ Siena, Ctr GeoTecnol, Siena, Italy

[6] GFZ German Res Ctr Geosci, Helmholtzstr 7, D-14467 Potsdam, Germany

[7] Univ Grenoble Alpes, ISTerre, CNRS, UMR 5275, Rue Piscine 1381, F-38058 Grenoble, France

[8] Inst Volcanol Canarias, Tenerife, Spain

[9] CNR, Ist Metodol Anal Ambientale, Tito, Italy

来源：

JOURNAL OF APPLIED GEOPHYSICS | 2018年 / 156卷

关键词：

Seismic tomography; Volcano seismology; Seismic attenuation; Body waves; Surface waves; CAMPI-FLEGREI CALDERA; WAVE ATTENUATION STRUCTURE; VELOCITY STRUCTURE; SHALLOW STRUCTURE; EARTHQUAKE LOCATION; SOURCE PARAMETERS; LOMA-PRIETA; INVERSION; ALGORITHM; FAULT;

D O I：

10.1016/j.jappgeo.2017.11.012

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

In this paper we present innovative methodologies for seismic monitoring of volcanic structures in space and time (4D) which can possibly evolve toward an unrest stage. They are based on repeated phase and amplitude measurements done on active and/or passive seismic data including shots, vibrations, earthquakes and ambient noise in order to characterize the structure of the volcano and track its evolution through time. The characterization of the medium properties is performed through the reconstruction of an image of the elastic and anelastic properties of the propagation medium crossed by seismic waves. This study focuses on the application of specific tomographic inversion methods to obtain high quality tomographic images. The resolution of the tomographic models is influenced by the number and spatial distribution of data. The expected resolution thus guides the setup of, for example, active seismic surveys. To recognize and monitor changes in the properties of the propagation medium without performing an active survey we identify a fast proxy based on the time evolution of the Vp/Vs ratio. The advantages and limitations of the methods are discussed through synthetic tests, resolution analysis and case studies in volcanic areas such as the Campi Flegrei (southern Italy) and The Geysers geothermal area (California). (C) 2017 Elsevier B.V. All rights reserved.

引用

页码：16 / 30

页数：15

共 86 条

[1] DETERMINATION OF 3-DIMENSIONAL VELOCITY ANOMALIES UNDER A SEISMIC ARRAY USING 1ST-P ARRIVAL TIMES FROM LOCAL EARTHQUAKES .1. A HOMOGENEOUS INITIAL MODEL [J].