Experimental detection of upward going cosmic particles and consequences for correction of density radiography of volcanoes
| Autor: | Claude Girerd, Daniele Carbone, Jacques Marteau, J. de Bremond d'Ars, Dominique Gibert, Serge Gardien, Kevin Jourde, Jean-Christophe Ianigro |
|---|---|
| Rok vydání: | 2013 |
| Předmět: |
geography
Muon geography.geographical_feature_category COSMIC cancer database 010504 meteorology & atmospheric sciences Astrophysics::High Energy Astrophysical Phenomena Cosmic ray Geophysics 010502 geochemistry & geophysics 01 natural sciences law.invention Telescope Atmosphere Volcano 13. Climate action law Muography General Earth and Planetary Sciences Noise (radio) Geology 0105 earth and related environmental sciences |
| Zdroj: | Geophysical Research Letters. 40:6334-6339 |
| ISSN: | 0094-8276 |
| Popis: | [1] Muon tomography measures the flux of cosmic muons crossing geological bodies to determine their density. The telescopes used to perform measurements are exposed to noise fluxes with high intensities relative to the tiny flux of interest. We give experimental evidences of a so far never described source of noise caused by a flux of upward going particles. Data acquired on La Soufriere of Guadeloupe and Mount Etna reveal that upward going particles are detected only when the rear side of the telescope is exposed to a wide volume of atmosphere located below the altitude of the telescope and with a rock obstruction less than several tens of meters. Biases produced on density muon radiographies by upward going fluxes are quantified, and correction procedures are applied to radiographies of La Soufriere. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Plný text