(PhD, UNIL)
KEYWORDS
Subglacial hydrology, inverse methods, data assimilation, remote sensing.
Research statement
I am interested in understanding processes that occur at the glaciers ice-bedrock interface. My PhD focuses in the study of the subglacial drainage system, where the main objective is to develop a framework to infer the hydraulic properties of the subglacial channels and distributed system by the assimilation of indirect observational data. For this, I rely on geostatistical tools, inverse methods and hydrogeological modelling techniques.
Biography
After completing my bachelor in Geology at the University of Chile, I become interested in hydrogeology. This led me to pursue the Master in Groundwater Studies at The University of New South Wales. After that, I applied the gained knowledge working in different hydrogeological/environmental consulting companies in Chile, where I realize that little attention was given to the cryosphere. This motivated me to get back into research through a snow hydrology oriented internship at the University of Quebec. Currently, I am PhD student at the University of Lausanne.
Contact
Inigo Irarrazaval inigo.irarrazavalbustos@unil.ch
Currently based in Coyhaique, Chile under a doc.mobility SNF fellowship. In collaboration with University Aysén and University Austral Chile.
Publications
Irarrazaval, I., Werder, M.A., Huss, M., Herman, F., and Mariethoz, G. (2021). Determining the evolution of an alpine glacier drainage system by solving inverse problems. Journal of Glaciology, First View, 1–15. https://doi.org/10.1017/jog.2020.116
Irarrazaval, I., Werder, M. A., Linde, N., Irving, J., Herman, F., & Mariethoz, G. (2019). Bayesian Inference of Subglacial Channel Structures From Water Pressure and Tracer-Transit Time Data: A Numerical Study Based on a 2-D Geostatistical Modeling Approach. Journal of Geophysical Research: Earth Surface, 124(6), 1625-1644. doi:10.1029/2018JF004921
Benoit, L., Gourdon, A., Vallat, R., Irarrazaval, I., Gravey, M., Lehmann, B., et al. (2019). A high-resolution image time series of the Gorner Glacier – Swiss Alps – derived from repeated unmanned aerial vehicle surveys. Earth Syst. Sci. Data, 11(2), 579-588. doi:10.5194/essd-11-579-2019
Mariethoz, G., Comunian, A., Irarrazaval, I., & Renard, P. (2014). Analog-based meandering channel simulation. Water Resources Research, 50(2), 836-854. doi:10.1002/2013wr013730
Conference/Seminars presentations
Irarrazaval, I., Werder, M.A., Huss, M., Herman, F., and Mariethoz, G. (2020). Determining Two-Dimensional Subglacial Drainage Systems of an Alpine Glacier by Solving Inverse Problems. AGU 2020 online. Session. Modeling of the Cryosphere: Glaciers and Ice Sheets I. Invited speaker.
Irarrazaval I, Dussaillant, A, Iribarren P, Vivero S, O’Kuinghtton J, Mariethoz G (2020) Morphological and ice dynamic changes induced by the formation of proglacial lakes in Exploradores Glacier, Patagonia. EGU May 2020. Share Science Online. https://doi.org/10.5194/egusphere-egu2020-11388 (link to presentation)
Irarrazaval I, Determining subglacial drainage systems by solving inverse problems (2019). VAW-ETH Glaciological Seminars, invited speaker, 12 September 2019. Zurich, Switzerland
Irarrazaval I, Herman F, Werder MA, Mariethoz G (2018). A stochastic subglacial drainage system model for data assimilation. EGU,9-13 April 2018. Vienna, Austria.
Irarrazaval I, Mariethoz G, Herman F (2018), Stochastic subglacial drainage model for data assimilation. 22nd Alpine Glaciology Meeting, 1-2 March 2018. Chamonix, France.
Irarrazaval I, Mariethoz G, Herman F (2017), Stochastic subglacial hydrology model for water pressure and mass transport data assimilation. 15th Swiss Geoscience Meeting, 17-18 November 2017, Davos, Switzerland.
Irarrazaval I, Mariethoz G, Herman F (2017), Geostatistical inversion of the subglacial drainage system. Conference High Altitudes meet High Latitudes: Globalizing Polar Issues, 11-12 September 2017, Crans-Montana, Switzerland.
Irarrazaval I, Mariethoz G, Herman F (2017), Geostatistical inversion of the subglacial drainage system. Alpine Glaciology Meeting, 2-3 February 2017, Zurich, Switzerland.
Irarrazaval I, Mariethoz G, Herman F (2016), Geostatistical inversion for modeling subglacial drainage system, 2016 AGU Fall Meeting, 12-16 December 2016, San Francisco, USA.
Irarrazaval I, Mariethoz G, Herman F (2016), Geostatistical inversion of subglacial drainage system, 14th Swiss Geoscience Meeting, 18-19 November 2016, Geneva, Switzerland.
Irarrazaval I, Mariethoz G, Herman F (2016), Statistical inversion approach for modeling subglacial drainage system, Geostats 2016, 5-9 September 2016, Valencia, Spain.