Geoscientist; Advisor, RemPlex
Geoscientist; Advisor, RemPlex


Delphine Appriou is a geoscientist who joined PNNL in 2010. She has over 10 years of expertise in many aspects of geologic carbon storage projects (i.e., characterization, permitting, monitoring, and transport). She internally coordinated efforts for the development of the four Underground Injection Control permit applications for the FutureGen 2.0 project. These efforts were rewarded by obtaining the first ever Class VI permits for geological carbon storage in the United States. Delphine contributes to performance assessments of geophysical techniques to monitor CO2 plume movements in the National Risk Assessment Partnership (NRAP), with a focus on gravity monitoring. She also supports the application of NRAP tools to candidate geological carbon storage sites as part of the CarbonSAFE initiative. She provides technical and project management expertise on various projects related to environmental remediation, geologic site characterization, geothermal energy, energy security, and environmental assessment.

Research Interest

  • Geological carbon storage
  • Geologic site characterization
  • Gravity monitoring
  • Geothermal resource exploration


  • MSc, Geology and Environment, University of Paris XI-Orsay, France, 2005
  • MSc, Marine Geosciences, University of Brest, France, 2004
  • BS, Earth Sciences, University of Maine, Le Mans, France, 2002

Affiliations and Professional Service

  • Member of the American Geophysical Union

Awards and Recognitions

  • Selection to participate in the 2012 Research Experience in Carbon Sequestration (June 3–13, 2012)
  • French Ministry of Higher Education – full study grant award (2002–2003)
  • Energy and Environment Directorate, Of The Year Project Team Award, FutureGen Underground Injection Control Permit Team (2014)



  • Hanna A.C., J.M. Whiting, B.Z. Huang, D. Appriou, X. Yang, J. de Toledo Camargo, and S. Baek, et al. 2024. "Heuristic Algorithms for Design of Integrated Monitoring of Geologic Carbon Storage Sites." International Journal of Greenhouse Gas Control 135. PNNL-SA-180903. doi:10.1016/j.ijggc.2024.104157


  • de Toledo Camargo J., D. Appriou, and J.A. Burghardt. 2023. "Geomechanical Characterization of the Mount Simon Sandstone and Eau Claire Formation of Northern Illinois Basin." In Proceedings of the 57th US Rock Mechanics/Geomechanics Symposium, June 25-28, Atlanta, GA, Paper No. ARMA-2023-0919. Alexandria, Virginia:American Rock Mechanics Association. PNNL-SA-183320. doi:10.56952/ARMA-2023-0919


  • Appriou D., and A.H. Bonneville. 2022. "Monitoring Carbon Storage Sites with Time-Lapse Gravity Surveys." In Geophysical Monitoring for Geologic Carbon Storage, edited by L. Huang. 211-232. Hoboken, New Jersey:John Wiley & Sons, Inc. PNNL-SA-135749. doi:10.1002/9781119156871.ch14
  • Dilmore R., D. Appriou, D.H. Bacon, C.F. Brown, A. Cihan, E. Gasperikova, and K. Kroll, et al. 2022. "Computational Tools and Workflows for Quantitative Risk Assessment and Decision Support for Geologic Carbon Storage Sites: Progress and Insights from the U.S. DOE's National Risk Assessment Partnership." In Proceedings of the 16th International Conference on Greenhouse Gas Control Technologies (GHGT-16), October 23-24, 2022, Lyon, France. Rochester, New York:Social Science Research Network (SSRN). PNNL-SA-177276. doi:10.2139/ssrn.4298480
  • Gasperikova E., D. Appriou, A.H. Bonneville, Z. Feng, L. Huang, K. Gao, and X. Yang, et al. 2022. "Sensitivity of geophysical techniques for monitoring secondary CO2 storage plumes." International Journal of Greenhouse Gas Control 114. PNNL-SA-160333. doi:10.1016/j.ijggc.2022.103585


  • Fritz B.G., J.R. Counts, M.L. Tuinstra, A.L. Bunn, and D. Appriou. 2021. Plant Growth Study - Growth of Three Plant Species in 100-OL-1 Operable Unit Soils. PNNL-31183. Richland, WA: Pacific Northwest National Laboratory. Plant Growth Study - Growth of Three Plant Species in 100-OL-1 Operable Unit Soils
  • Burghardt J.A., and D. Appriou. 2021. "State of Stress Uncertainty Quantification and Geomechanical Risk Analysis for Subsurface Engineering." In Proceedings of the 55st US Rock Mechanics / Geomechanics Symposium, June 18-25, 2021, Houston, Virtual, 5. Alexandria, Virginia:American Rock Mechanics Associati. PNNL-SA-160241.


  • Appriou D., A.H. Bonneville, Q. Zhou, and E. Gasperikova. 2020. "Time-Lapse Gravity Monitoring of CO2 Migration Based on Numerical Modeling of a Faulted Storage Complex." International Journal of Greenhouse Gas Control 95. PNNL-SA-145913. doi:10.1016/j.ijggc.2020.102956
  • Appriou D., N.J. Huerta, Z. Zhang, J.A. Burghardt, and D.H. Bacon. 2020. Evaluation of Containment and Geomechanical Risks at Integrated Mid-Content Stacked Carbon Storage Hub Sites. PNNL-30047. Richland, WA: Pacific Northwest National Laboratory. Evaluation of Containment and Geomechanical Risks at Integrated Mid-Content Stacked Carbon Storage Hub Sites
  • McElroy E.M., A.R. Lawter, D. Appriou, F.N. Smith, M.E. Bowden, O. Qafoku, and L. Kovarik, et al. 2020. "Iodate interactions with calcite: Implications for natural attenuation." Environmental Earth Sciences 79, no. 12, Article No. 306. PNNL-SA-146389. doi:10.1007/s12665-020-09023-1


  • Appriou D. 2019. Assessment of the Geomechanical Risks Associated with CO2 Injection at the FutureGen 2.0 Site. PNNL-28657. Richland, WA: Pacific Northwest National Laboratory. Assessment of the Geomechanical Risks Associated with CO2 Injection at the FutureGen 2.0 Site
  • Fernandez C.A., V. Gupta, G.L. Dai, A.P. Kuprat, A.H. Bonneville, D. Appriou, and J.A. Horner, et al. 2019. "Insights into a Greener Stimuli-Responsive Fracturing Fluid for Geothermal Applications." ACS Sustainable Chemistry & Engineering 7, no. 14:19660-19668. PNNL-SA-144518. doi:10.1021/acssuschemeng.9b04802
  • Xianjin Y., T.A. Buscheck, K. Mansoor, Z. Wang, K. Gao, L. Huang, and D. Appriou, et al. 2019. "Assessment of Geophysical Monitoring Methods for Detection of Brine and CO2 Leakage in Drinking Water Aquifers." International Journal of Greenhouse Gas Control 90. PNNL-SA-141369. doi:10.1016/j.ijggc.2019.102803
  • Yonkofski C., D. Appriou, and J.L. Downs. 2019. Dust Control Planning. PNNL-29152. Richland, WA: Pacific Northwest National Laboratory. Dust Control Planning




  • Gilmore T.J., A.H. Bonneville, E.C. Sullivan, M.E. Kelley, D. Appriou, V.R. Vermeul, and S.K. White, et al. 2016. "Characterization and Design of the FutureGen 2.0 Carbon Storage Site." International Journal of Greenhouse Gas Control 53. PNNL-SA-116762. doi:10.1016/j.ijggc.2016.07.022



  • Bonneville A., T.J. Gilmore, E.C. Sullivan, V.R. Vermeul, M.E. Kelley, S.K. White, and D. Appriou, et al. 2013. "Evaluating the Suitability for CO2 Storage at the FutureGen 2.0 Site, Morgan County, Illinois, USA." Energy Procedia 37. PNNL-SA-91308. doi:10.1016/j.egypro.2013.06.541