Pascal Castellazzi

Research Scientist in Hydrogeology/Remote Sensing

My research has focussed on understanding of recent developments in geodesy and remote sensing to support groundwater exploration. This science will help us evaluate the sustainability of water resources, infer aquifer-system dynamics and prevent water-related hazards. I am applying my science in the data assimilation and value of information research program.


Technical skills

  • 2D/3D groundwater flow modelling
  • Well design, water sampling and analysis, aquifer characterisation
  • Phase and amplitude processing of SAR imagery, interferometry
  • Time-variable gravity data processing and interpretation
  • Inversion, combination, and integration of geodetic data


Professional experience

January 2018 – present
Postdoctoral fellow: CSIRO Deep Earth Imaging Future Science Platform

September 2017 – December 2017
Research professional: Geological Survey of Canada

January 2013 – April 2013
Research professional: Geological Survey of Canada

March 2011 – January 2012
Research professional: National Institute of Scientific Research Canada



PhD (Earth Science) University of Quebec Canada 2017

MESci University of Quebec Canada 2011

MEEngi Université de Versailles Saint-Quentin-en-Yvelines France 2009


Selected publications

Castellazzi P, Longuevergne L, Martel R, Rivera A, Brouard C, and Chaussard E (2017). Combining GRACE and InSAR for quantitative mapping of groundwater depletion at the water management scale. Remote Sensing of Environment, 205, 408-418.

Jaramillo F, Brown I, Castellazzi P, Espinosa L, Guittard A, Hong SH, Rivera-Monroy V, and Wdowinski S (2018). Assessment of hydrologic connectivity and restoration in ungauged wetlands with Interferometric SAR observations. Environmental Earth Sciences. Under Review.

Castellazzi, P., Garfias, J., Martel, R., Brouard, C., & Rivera, A. (2017). InSAR to support sustainable urbanization over compacting aquifers: The case of Toluca Valley, Mexico. International Journal of Applied Earth Observation and Geoinformation, 63, 33-44. doi: 10.1016/j.jag.2017.06.011

Castellazzi, P., Martel, R., Rivera, A., Huang, J., Goran, P., Calderhead, A. I, & Salas, J. (2016). Groundwater depletion in Central Mexico: Use of GRACE and InSAR to support water resources management. Water Resources Research, 52, 5985–6003. doi: 10.1002/2015WR018211

Castellazzi, P., Arroyo-Domínguez, N., Martel, R., Calderhead, A. I., Normand, J. C. L., Gárfias, J., & Rivera, A. (2016). Land subsidence in major cities of Central Mexico: Interpreting InSAR-derived land subsidence mapping with hydrogeological data. International Journal of Applied Earth Observation and Geoinformation, 47, 102-111. doi: 10.1016/j.jag.2015.12.002

Castellazzi, P., Martel, R., Galloway, D. L., Longuevergne, L., & Rivera, A. (2016). Assessing Groundwater Depletion and Dynamics Using GRACE and InSAR: Potential and Limitations. Groundwater. doi:10.1111/gwat.12453

Castellazzi, P., Martel, R., Garfias, J., Calderhead, A. I., Salas-Garcia, J., & Huang, J. (2014). Groundwater deficit and land subsidence in Central Mexico monitored by GRACE and Radarsat-2. 2014 Ieee International Geoscience and Remote Sensing Symposium (Igarss), 2597-2600. doi: 10.1109/IGARSS.2014.6947005