Centre of Exchange and Research in Volcanology

Presentations at Conferences

Versión española

10th IAVCEI Gas Workshop, Mexico D.F.; 10 – 20 November 2008. Degassing processes and recent activity at Volcán de Colima; Nick Varley & Gabriel Reyes Dávila.
IAVCEI 2008 General Assembly Reykjavik, Iceland; 18 - 22 Aug. 2008. Integrated monitoring of a persistently active silicic volcano: Volcán de Colima, Mexico; NR Varley, JA Stevenson ,GA Reyes, O. Reubi, J Johnson. Slow dome growth at Volcán de Colima 2007-8: thermographic analysis & implications for risk; NR Varley, M Hinrichs, J Hanson,V Vargas, JC Gavilanes, JA Stevenson
Cities on Volcanoes 5, Shimabara, Japan; 19 – 23 November 2007. Developing the Monitoring Strategy at Volcán de Colima, Mexico: Integrating of Thermal and Infrasound Data; Nick Varley, John Stevenson, Gabriel Reyes & Jeff Johnson.
II Reunión Internacional de los Investigadores del Archipiélago de Revillagigedo, Manzanillo 15 - 17 Aug. 2007. The volcanic hazards of Isla Socorro: an assessment and monitoring; Nick Varley, John Stevenson & Yuri Taran. Integrated study of a volcanic hydrothermal system: Isla Socorro, Mexico; Nick Varley, Stewart Sandberg, Luke Wooller, Yuri Taran & John Stevenson.
AGU Joint Assembly, Acapulco 22th-25th May 2007. Magma Ascent and Degassing at Volcán de Colima, Mexico: Monitoring the Increasing Activity; Nick Varley, John Stevenson, Gabriel Reyes, Jeff Johnson.
El Chichón Volcano: 25 years later. A commemorative conference, San Cristóbal de las Casas, Chiapas; 20-22 March 2007. Post-eruptive degassing processes of El Chichón, Mexico; Nick Varley, Dmitri Rouwet, Yuri Taran, Michael Cassidy, Kathryn Flynn, and Martin Jutzeler.
El Chichón Volcano: 25 years later. A commemorative conference, San Cristóbal de las Casas, Chiapas; 20-22 March 2007. Recent activity at Volcán de Colima – application of new monitoring techniques; Nick Varley, John Stevenson, Gabriel Reyes, Lea Scharff, Andrew Browning, Florian Ziemen, & Matthias Hort.
American Geophysical Union Fall Meeting, San Francisco, USA 11–15 Dec. 2006. Vulcanian explosions at Volcán de Colima, Mexico: modelling the conduit processes; Nick Varley, John Stevenson, Jeffrey Johnson, Gabriel Reyes, Klaus Weber, Richard Sanderson.
Reunión Unión Geofísica Mexicana, Puerto Vallarta, 30 Oct. – 3 Nov. 2006. Modelling conduit processes at Volcán de Colima, Mexico: interpretation of monitoring data; Nick Varley, John Stevenson, Jeffrey Johnson, Anna Colvin, Klaus Weber, Richard Sanderson, Marie-Claude Hébert, y Gabriel Reyes.
Physics of Fluid Oscillations in Volcanic Systems, Lancaster University, UK; 7-8 September 2006. Modelling conduit processes at Volcán de Colima, Mexico; Nick Varley, John Stevenson, Jeffrey Johnson, Gabriel Reyes, Vicky Sword-Daniels, Anna Colvin, Klaus Weber, Richard Sanderson & Rob Harwood.
Cities on Volcanoes 4, Ecuador 23-27 Jan. 2006. a) Increasing activity at Volcán de Colima, Mexico: modelling the transition between effusive and explosive activity; N. Varley & J. Johnson. b) Advances in monitoring to better evaluate and forecast the risk at Volcán de Colima, Mexico; N. Varley, Georg Auernhammer, G. Reyes, R. Harwood y Manfred Joswig.
American Geophysical Union Fall Meeting, San Francisco, USA 5–9 Dec. 2005. Thermal Monitoring at Volcán de Colima, Mexico: Characterizing the Activity and Studying the Transition Between explosive and Effusive Regimes; N. Varley & J. Johnson.
IUGG Inter Association Working Group on Electromagnetic Studies of Earthquakes and Volcanoes (EMSEV) Workshop, 3-4 Nov. 2005, Puerto Vallarta, Mexico. Frontiers of Seismo-Volcano Electromagnetics, 2005. Integrated study of a volcanic hydrothermal system: Isla Socorro, México; Nick Varley, Stewart Sandberg, Richard MacNeil, Luke Wooller, Yuri Taran, Mikel Diez Esteban.
Reunión Unión Geofísica Mexicana, Puerto Vallarta, 31 Oct. – 4 Nov. 2005. i) Analysis of low frequency seismicity to characterize activity at Volcán de Colima: modelling the explosive mechanism; Nick Varley, Georg Auernhammer, Rob Harwood, Gabriel Reyes Davila, Manfred Joswig. ii) Modelling the transition between eruptive and explosive activity: the recent activity at Volcán de Colima; Nick Varley & Jeffrey Johnson.
Varley, NR (2005): Modelling explosive and effusive degassing processes at Volcán de Colima, Mexico. IAVCEI Commission on the Chemistry of Volcanic Gases 9th Gas Workshop, 1st - 10th May 2005, Palermo Italia.
Varley, NR (2005): Statistical analysis of volcanic explosion data European Geoscience Union, Vienna, Austria, 24th - 29th April 2005.
Varley, NR (2004): The transition between effusive and explosive volcanism: recent episodes at Vólcan de Colima, México. Integrated study of a volcanic hydrothermal system: Isla Socorro, Mexico. Integrated thermal monitoring system: an aid to modelling explosive activity at Volcán de Colima. IAVCEI General Assembly, Pucón, Chile. 15th - 19th November 2004.
Varley, NR (2004): Integration of different data sets for improved modelling of volcanic processes: an example at Volcán de Colima, Mexico. Workshop on Statistics in Volcanology. Bristol. 22nd - 26th March 2004.
Varley, NR (2004): A prolonged effusive eruption: Volcán de Colima 2001-2003. Modelling explosive eruptions at Volcán de Colima. Correlation between geochemical indicators and activity at Volcán de Colima. IX Reunión de Volcán de Colima, Colima, 19th - 22th January de 2004.
Varley, NR (2004): Activity at Volcán de Colima 2001 - 2003: modelling its behaviour from an integrated data set. GSA Penrose Meeting; Neogene-Quaternary continental margin volcanism, Metepec, México. 12th - 16th January de 2004.
Varley, NR (2003): Recent effusive eruption of Volcán de Colima: México: integration of techniques for improved modelling. Cities on Volcanoes 3, Hilo, Hawaii, EUA; 14th - 18th July 2003.
Varley, NR (2003): Study of degassing processes at Volcán de Colima. The 8th Field Workshop On Volcanic Gases, Nicaragua y Costa Rica, 26th March - 1st April 2003.
Varley, NR (2002): Modelling the Effusive Eruption of Volcán de Colima, Mexico 2001-02. American Geophysical Society, Fall Meeting, December 2002.
Varley, NR (2002): Variations in the geochemistry of Volcán de Colima related to its eruption 2001-2002. Degassing processes of Evermann volcano, La Isla de Socorro. III Reunión Nacional de Ciencias de la Tierra, PuertoVallarta, México, 4th - 8th November 2002.
Varley, NR (2002): Dome growth and explosivity during 1999-2001 of Volcán de Colima, Mexico. Explosive volcanism in subduction zones, Saint-Pierre, Martinique, France, 12th - 16th May 2002.
Varley, NR (2002): Procesos de degasificación del Volcán de Colima. La actividad explosiva 1999-2001 del Volcán de Colima. Octava Reunión Internacional de Volcán Colima, Colima, January 2002.
Varley, NR (2001): Degassing processes of Volcán de Colima. Explosive activity of Volcán de Colima 1999-2001. Reunión Unión Geofísica Mexicana, Puerto Vallarta, November 2001.
Varley, NR (2001): The degassing of Volcán de Colima, Mexico. Origins, emissions and impacts of volcanic gases, Geological Society Meeting, Burlington House, London, 25th - 26th October 2001.
Varley, NR (2000): Diffuse degassing of Mexican Volcanoes. IAVCEI General Assembly, Bali, Indonesia, 10th July 2000.
Varley, NR (2000): A study of the passive degassing of some of the volcanoes of Mexico. Séptima Reunión Internacional de Volcán Colima, Colima, March 2000.
Varley, NR (1999): Diffuse degassing of Popocatépetl, Mexico. International Union of Geodesy & Geophysics XXII General Assembly, Birmingham, UK, July 1999.
Varley, NR (1999): Diffuse degassing of Popocatépetl. Simposio Internacional Volcán Popocatépetl, México D.F., March 1999.
Varley, NR (1998): Diffuse degassing of Popocatépetl, Mexico. AGU Fall Meeting, San Francisco, 6th - 10th December 1998.
Varley, NR (1998): Soil gas concentrations at Popocatépetl. Primera Reunión Nacional de Ciencias de la Tierra, México D.F., September 1998.
Varley, NR (1998): Soil gas measurements as a possible indicator of volcanic activity at Popocatépetl. European Advanced Course on Volcanic Risk Assessment and Hazard Mitigation, Jun 1998; Los Acores.
Varley, NR (1998): Soil gas measurements as a possible indicator of volcanic activity at Popocatépetl. Sexta Reunión Internacional Volcán de Colima, Colima, January 1998.
Varley, NR (1997): Soil gas measurements as a possible indicator of volcanic activity at Popocatépetl. Reunión Anual de Unión Geofísica Mexicana, Puerto Vallarta, November 1997.
Varley, NR (1997): Soil gas measurements as an indicator of volcanic activity at Popocatépetl, México. IV International Conference of Rare Gas Geochemistry, Roma, October 1997.
Varley, NR (1993): Radon in soil gas and geology in SW England. Natural Radiation Environment VI, Montreal, Canada, Jun 1993.
Varley, NR (1993): Relationship between indoor and soil gas radon in SW England. International Radiological Protection Association Meeting, Portsmouth, UK, Jun 1993.
Varley, NR (1991): Radon and geology in SW England. Meeting of the Geological Society, London, UK, March 1991.
Varley, NR (1990): Natural Radiation Environment V, Salzburg, Austria, Jun 1990. Radon and its correlation with some geological features of SW England.
Varley, NR (1990): Radon in soil gas and its relationship with some major faults of SW England. Environmental Health & Geochemistry, Edinburgh, UK, May 1990.