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Personal profile

Research Interests

Volcano Geophysics and Geodynamics, Mid-Ocean Ridge Processes, Melt Generation and Migration Through the Upper Mantle. My current research utilizes thermomechanical models to better understand the rheological controls on magma reservoir growth, pressurization, and volcanic eruption. I also use geodynamic models to investigate melting and melt migration in the mantle beneath mid-ocean ridges. My work involves a multi-pronged approach that combines data collection on land and at sea with data analysis and model development. Future projects include case studies of active continental volcanic systems as well as seagoing field expeditions to better understand the formation of new oceanic crust at mid-ocean ridges.

Personal profile

In November and December of 2016 Dr. Gregg served as Chief Scientist of the OASIS Expedition. K-12 students had the opportunity to follow along with the OASIS Science Team on an expedition of discovery to investigate submarine volcanoes that have never been explored before. You can learn more about the 2016 expedition on the OASIS Facebook Page and/or OASIS YouTube Channel. Make sure to *Subscribe* to follow along with the team when they return to the OASIS field sight in December 2018!

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Education

  • Ph.D. Massachusetts Institute of Technology / Woods Hole Oceanographic Institution Joint Program 2008
  • B.S. Geology & Geophysics, University of Missouri - Rolla, now MS&T

Teaching

  • GEOL 350: Volcanoes
  • GEOL 450: Probing the Earth's Interior
  • GEOL 593X: Volcano Geophyiscs & Geodynamics
  • GEOL 593P: Mid-ocean Ridge Tectonics
  • GEOL 593K: Applied Geophysics

Office Address

3016 Natural History Building

Office Phone

+1.217.333.3540

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Research Output

Hindcasting Magma Reservoir Stability Preceding the 2008 Eruption of Okmok, Alaska

Albright, J. A., Gregg, P. M., Lu, Z. & Freymueller, J. T., Aug 16 2019, In : Geophysical Research Letters. 46, 15, p. 8801-8808 8 p.

Research output: Contribution to journalArticle

  • How Accurately Can We Model Magma Reservoir Failure With Uncertainties in Host Rock Rheology?

    Zhan, Y. & Gregg, P., Aug 1 2019, In : Journal of Geophysical Research: Solid Earth. 124, 8, p. 8030-8042 13 p.

    Research output: Contribution to journalArticle

  • Impact of Crustal Rheology on Temperature-Dependent Viscoelastic Models of Volcano Deformation: Application to Taal Volcano, Philippines

    Morales Rivera, A. M., Amelung, F., Albino, F. & Gregg, P. M., Jan 2019, In : Journal of Geophysical Research: Solid Earth. 124, 1, p. 978-994 17 p.

    Research output: Contribution to journalArticle

  • Integrating Reservoir Dynamics, Crustal Stress, and Geophysical Observations of the Laguna del Maule Magmatic System by FEM Models and Data Assimilation

    Zhan, Y., Gregg, P. M., Le Mével, H., Miller, C. A. & Cardona, C., Dec 1 2019, In : Journal of Geophysical Research: Solid Earth. 124, 12, p. 13547-13562 16 p.

    Research output: Contribution to journalArticle

  • Stress Triggering of the 2005 Eruption of Sierra Negra Volcano, Galápagos

    Gregg, P. M., Le Mével, H., Zhan, Y., Dufek, J., Geist, D. & Chadwick, W. W., Dec 28 2018, In : Geophysical Research Letters. 45, 24, p. 13,288-13,297

    Research output: Contribution to journalArticle