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I study how magma is transported from Earth’s mantle to the surface at volcanoes and the interaction of mantle plumes with ocean ridges. I also investigate the structures that control rupture segmentation at the Cascadia subduction zone. I lead research expeditions to the Cascadia margin, oceanic spreading centers, and volcanic hotspots. I collect and analyze dense geophysical data and use inverse modeling on high performance computers.

Ongoing projects

  • Santorini: Detailed vertical structure of a recharging crustal magma plumbing system at an arc volcano. State-of-the-art analysis and interpretation of a unique active source seismic dataset for deep structure and state of magma system.
  • Cascadia 2021: Investigating subduction zone segmentation with a 3D high-resolution Vp model. Dense onland recording of offshore deep penetration airgun shots to image the structures that relate to rupture complexity of the Cascadia megathrust.
  • Galapagos 2022: An Open Access experiment to seismically image Galapagos plume-ridge interaction. A large OBS deployment for teleseismic and ambient noise imaging of the mantle and lithosphere.

Oregon Center for Volcanology: YouTube video

Themes

  • Subduction zone segmentation and structure
  • Volcanic plumbing and eruption.
  • Plume-Ridge interactions
  • Mid-ocean ridge crustal structure and relationship to mantle processes.
  • Development of advanced seismic methods including tomography, waveform modeling, and full waveform inversion
  • Integrating geophysical, geochemical and geodynamic observations.
  • Modeling of physical processes

Links to Research projects 

  1. Santorini magma plumbing structure (2015 PROTEUS cruise report)
  2. Newberry volcano magma system and geothermal energy
  3. Mid-ocean ridge magma and hydrothermal plumbing
  4. Galapagos crustal and mantle structure
  5. Cascadia Initiative: An onshore/offshore experiment to study megathrust earthquakes in the Pacific Northwest and also volcanic arc structure, the formation, deformation and hydration of the Juan De Fuca and Gorda plates.