Current and Past Projects

Hikurangi Trench Regional Electromagnetic Survey to Image the Subduction Thrust (HT-RESIST)

Hikurangi Trench Regional Electromagnetic Survey to Image the Subduction Thrust (HT-RESIST)

Beginning mid-December 2018, we will be sailing onboard the R/V Roger Revelle  in the waters east of North Island, New Zealand to carry out a marine EM survey of the Hikurangi subduction zone (HSZ). We will collect both passive magnetotelluric (MT) d...
SALSA EM: Mapping Subglacial Groundwater in Antarctica

SALSA EM: Mapping Subglacial Groundwater in Antarctica

During November 2018 to January 2019 we will be carrying out an extensive EM survey on the Whillans ice stream to map subglacial groundwater.  We will collect both passive magnetotelluric (MT) data as well as active-source EM data, as described in our ...
Freshwater Beneath the US Atlantic Continental Shelf

Freshwater Beneath the US Atlantic Continental Shelf

In 2015 we conducted a pilot study of large-scale electromagnetic (EM) surveying of offshore groundwater at locations off New Jersey and Martha’s Vineyard. EM methods remotely measure bulk electrical conductivity, which is strongly a function of groundwater s...
Anisotropy and Physics of the Pacific Lithosphere Experiment (APPLE)

Anisotropy and Physics of the Pacific Lithosphere Experiment (APPLE)

This project aims to study electrical anisotropy in the oceanic crust and mantle in the Northeastern Pacific.  We are currently reanalyzing controlled-source electromagnetic (CSEM) data collected in 2001 and originally analyzed in the 2005 PhD thesis ...
Magnetotelluric and Seismic Investigations of Okmok Volcano

Magnetotelluric and Seismic Investigations of Okmok Volcano

This project uses geophysical techniques to characterize the magmatic system beneath Okmok volcano   in the Aleutian island arc.  In the summer of 2015, amphibious magnetotelluric   (MT) data and onshore passive seismic  data were collec...
Magnetotelluric Observations of Cascadia using a Huge Array (MOCHA)

Magnetotelluric Observations of Cascadia using a Huge Array (MOCHA)

This is a collaborative project to image details of convergent margin segmentation and the distribution of fluids associated with the subducting slab using combined onshore and offshore magnetotelluric (MT) data in Oregon and Washington. This data will...
Serpentinite, Extension and Regional Porosity Experiment across the Nicaraguan Trench (SERPENT)

Serpentinite, Extension and Regional Porosity Experiment across the Nicaraguan Trench (SERPENT)

This project is the first to use controlled-source electromagnetic (CSEM) imaging to image the fluid content of the incoming plate and forearc crust at a subduction zone. In 2010 we collected broadband magnetotelluric (MT) and CSEM data along a 300 km...
East Pacific Rise at 9ºN

East Pacific Rise at 9ºN

In February 2004 we carried out an extensive EM survey across the Northern East Pacific Rise near 9º30' N.  The goals of this experiment were to image the upper mantle and crustal magmatic system associated with plate spreading volcanism at this fast-spreading m...