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Title

Investigating the effects of lightning on cultural heritage: Characterization of the resulting fulgurite

AuthorsGonzález Laguna, R; Oujja, M. ; Martín Crespo, T; Álvarez de Buergo, Mónica CSIC ORCID ; Lozano Fernández, R.P; Fort González, Rafael CSIC ORCID ; Castillo, Marta
KeywordsCultural heritage
fulgurite
Issue Date21-Sep-2009
Citation8th International Conference on Lasers in the Conservation of Artworks, Sibiu, Romania, September 21-25, 2009
AbstractOn average, about 100 lightning discharges occur every second on the Earth. When lightning strikes soil, sand or rock, the high temperatures reached (about 30.000 ºK) promote the formation of melted glass tubular structures known as fulgurites. In the case referred here, lightning stroked a soil (granitic sand plus angular stones of thick-grained two-mica granite) and allochthonous materials supporting the platform of an electric tower. The intense melting produced a cylindrical rod, from which, as if they were roots of a tree, several bifurcating horizontal and subhorizontal branches of decreasing thickness were attached (see figure below).
URIhttp://hdl.handle.net/10261/156962
Appears in Collections:(IGEO) Comunicaciones congresos
(IQFR) Comunicaciones congresos
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AbstractLACONA_Alvarez_Fulgurite.pdfAbstract al Congreso Lasers in the conservation of artworks172,95 kBAdobe PDFThumbnail
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Fulgurites_LACONA8.pdfPresentación al Congreso Lasers in the conservation of artworks1,15 MBAdobe PDFThumbnail
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