Zobrazeno 1 - 10
of 50
pro vyhledávání: '"Patrick Richon"'
Autor:
Hugo Raynal, Julien Amestoy, Marc Souhaut, Patrick Richon, Éric Pique, David Baratoux, Pieter van Beek, Pascal Chotard, Thomas Zambardi, Aude Delpuech, Solène Derrien, Pierre-Yves Meslin
Publikováno v:
Journal of Environmental Radioactivity. 237:106695
This study describes and discusses the results of a 14 month-long campaign (April 2019 to June 2020) aimed at characterizing and quantifying the influence of environmental factors (cosmic rays, rainfall events, soil moisture and atmospheric radon) on
Development of a highly sensitive radon-222 amplifier (HiSRA) for low-level atmospheric measurements
Autor:
Sylvain Topin, J. Moulin, Claire Gréau, Ludovic Deliere, Patrick Richon, Vincent Thomas, Alexandre Hovesepian, Julie Pujos
Publikováno v:
Journal of Environmental Radioactivity. 171:124-131
Radon ( 222 Rn), a radioactive gas with a half-life of 3.82 days, is continuously emanated from soil, rocks, and water by the radioactive decay of 226 Ra. Radon-222 is released from the ground into the atmosphere, where it is transported mainly by tu
Mass and heat flux balance of La Soufrière volcano (Guadeloupe) from aerial infrared thermal imaging
Autor:
Olivier Coutant, Damien Gaudin, Gilbert Hammouya, Jean-Bernard de Chabalier, Christophe Delacourt, François Beauducel, Patrick Richon
Publikováno v:
Journal of Volcanology and Geothermal Research
Journal of Volcanology and Geothermal Research, 2016, 320, pp.107-116. ⟨10.1016/j.jvolgeores.2016.04.007⟩
Journal of Volcanology and Geothermal Research, 2016, 320, pp.107-116. ⟨10.1016/j.jvolgeores.2016.04.007⟩
International audience; La Soufrière of Guadeloupe is an active volcano of Lesser Antilles that is closely monitored due to a high eruptive hazard potential. Since 1992 it exhibits a medium-level but sustained background hydrothermal activity with l
Autor:
Ananta Prasad Gajurel, Patrick Richon, Frédéric Perrier, Bishal Nath Upreti, Frédéric Girault
Publikováno v:
Journal of Asian Earth Sciences
Journal of Asian Earth Sciences, 2011, 40, pp.595-610. ⟨10.1016/j.jseaes.2010.10.012⟩
Journal of Asian Earth Sciences, 2011, 40, pp.595-610. ⟨10.1016/j.jseaes.2010.10.012⟩
International audience; Effective radium-226 concentration ( EC Ra) has been measured in soil samples from seven horizontal and vertical profiles of terrace scarps in the northern part of Kathmandu Valley, Nepal. The samples belong to the Thimi, Goka
Publikováno v:
Pure and Applied Geophysics. 167:253-276
Pressure-induced temperature (PIT) variations are systematically observed in the atmosphere of underground cavities. Such PIT variations are due to the compressibility of the air, damped by heat exchange with the rock surface. It is important to char
Autor:
Sri Sumarti, Surono, Patrick Richon, Francesco Sortino, Anthony Nonell, Jean-Paul Toutain, Jean-Claude Baubron
Publikováno v:
Bulletin of Volcanology. 71:815-826
Soil temperature and gas (CO2 concentration and flux) have been investigated at Merapi volcano (Indonesia) during two inter-eruptive periods (2002 and 2007). Precise imaging of the summit crater and the spatial pattern of diffuse degassing along a ga
Autor:
Prithvi Shrestha, Patrick Richon, Svetlana Byrdina, Bharat Prasad Koirala, Umesh Gautam, Frédéric Perrier, Dilli Ram Tiwari, Sudhir Rajaure, André Revil, Soma Nath Sapkota, Laurent Bollinger, Simon Contraires, Christian France-Lanord, Sarah Bureau
Publikováno v:
Earth and Planetary Science Letters
Earth and Planetary Science Letters, Elsevier, 2009, 278 (3-4), pp.198-207. ⟨10.1016/j.epsl.2008.12.008⟩
Earth and Planetary Science Letters, 2009, 278 (3-4), pp.198-207. ⟨10.1016/j.epsl.2008.12.008⟩
Earth and Planetary Science Letters, Elsevier, 2009, 278 (3-4), pp.198-207. ⟨10.1016/j.epsl.2008.12.008⟩
Earth and Planetary Science Letters, 2009, 278 (3-4), pp.198-207. ⟨10.1016/j.epsl.2008.12.008⟩
International audience; Gas discharges have been identified at the Syabru–Bensi hot springs, located at the front of the High Himalaya in Central Nepal, in the Main Central Thrust zone. The hot spring waters are characterized by a temperature reach
Publikováno v:
Building and Environment
Building and Environment, Elsevier, 2006, 41 (7), pp.926-939. ⟨10.1016/j.buildenv.2005.04.003⟩
Building and Environment, 2006, 41 (7), pp.926-939. ⟨10.1016/j.buildenv.2005.04.003⟩
Building and Environment, Elsevier, 2006, 41 (7), pp.926-939. ⟨10.1016/j.buildenv.2005.04.003⟩
Building and Environment, 2006, 41 (7), pp.926-939. ⟨10.1016/j.buildenv.2005.04.003⟩
International audience; Thermal stratification associated with thermal plumes in semi-confined and confined non-adiabatic environments has been investigated using heating experiments performed in the atmosphere of an underground quarry. A 100 W sourc
Autor:
Frédéric Perrier, C. Crouzeix, Patrick Richon, J. L. Le Mouël, Vladimir Kossobokov, Pierre Morat
Publikováno v:
The European Physical Journal B. 46:563-579
Temperature and humidity measurements have been performed since 2000 in the atmosphere of the 20-m deep vertical access pit of an underground quarry. Air avalanches take place in the pit when the outside air density is larger than the equilibrium air
Publikováno v:
Earth and Planetary Science Letters. 227:473-480
The geochemical response of groundwater to external forcing is studied in a tunnel hosted in fractured gneiss near and above an artificial lake having large water level variations. Dripping waters have been monitored in two zones characterized by hig