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Cucci L, Di Luccio F, Esposito A, et al. Vein networks in hydrothermal systems provide constraints for the monitoring of active volcanoes. Sci Rep. 2017;7(1):146doi: 10.1038/s41598-017-00230-8.
Cucci, L., Di Luccio, F., Esposito, A., & Ventura, G. (2017). Vein networks in hydrothermal systems provide constraints for the monitoring of active volcanoes. Scientific reports, 7(1), 146. https://doi.org/10.1038/s41598-017-00230-8
Cucci, Luigi, et al. "Vein networks in hydrothermal systems provide constraints for the monitoring of active volcanoes." Scientific reports vol. 7,1 (2017): 146. doi: https://doi.org/10.1038/s41598-017-00230-8
Cucci L, Di Luccio F, Esposito A, Ventura G. Vein networks in hydrothermal systems provide constraints for the monitoring of active volcanoes. Sci Rep. 2017 Mar 10;7(1):146. doi: 10.1038/s41598-017-00230-8. PMID: 28273951; PMCID: PMC5428009.
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Sci Rep. 2017 Mar 10;7(1):146. doi: 10.1038/s41598-017-00230-8.

Vein networks in hydrothermal systems provide constraints for the monitoring of active volcanoes.

Scientific reports

Luigi Cucci, Francesca Di Luccio, Alessandra Esposito, Guido Ventura

Affiliations

  1. Istituto Nazionale di Geofisica e Vulcanologia, Via di Vigna Murata 605, 00143, Roma, Italy.
  2. Istituto Nazionale di Geofisica e Vulcanologia, Via di Vigna Murata 605, 00143, Roma, Italy. [email protected].
  3. Istituto per l'Ambiente Marino Costiero, Consiglio Nazionale delle Ricerche, Calata Porta di Massa, 80133, Napoli, Italy. [email protected].

PMID: 28273951 PMCID: PMC5428009 DOI: 10.1038/s41598-017-00230-8

Abstract

Vein networks affect the hydrothermal systems of many volcanoes, and variations in their arrangement may precede hydrothermal and volcanic eruptions. However, the long-term evolution of vein networks is often unknown because data are lacking. We analyze two gypsum-filled vein networks affecting the hydrothermal field of the active Lipari volcanic Island (Italy) to reconstruct the dynamics of the hydrothermal processes. The older network (E1) consists of sub-vertical, N-S striking veins; the younger network (E2) consists of veins without a preferred strike and dip. E2 veins have larger aperture/length, fracture density, dilatancy, and finite extension than E1. The fluid overpressure of E2 is larger than that of E1 veins, whereas the hydraulic conductance is lower. The larger number of fracture intersections in E2 slows down the fluid movement, and favors fluid interference effects and pressurization. Depths of the E1 and E2 hydrothermal sources are 0.8 km and 4.6 km, respectively. The decrease in the fluid flux, depth of the hydrothermal source, and the pressurization increase in E2 are likely associated to a magma reservoir. The decrease of fluid discharge in hydrothermal fields may reflect pressurization at depth potentially preceding hydrothermal explosions. This has significant implications for the long-term monitoring strategy of volcanoes.

References

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  2. Sci Rep. 2013 Sep 26;3:2762 - PubMed
  3. Sci Rep. 2016 Aug 25;6:32245 - PubMed

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