We are using a radiation transport modeling package called GEANT4 to model the effect crustal magnetic sources have on incoming radiation. Because some radiation is composed of charged particles, they should be deflected by strong magnetic fields. We are currently testing the efficacy of martian crustal magnetic shielding, with the goal of providing future human explorers an estimate of areas that may be safer for habitation.

We are using an iterative method of downward continuation on MGS and MAVEN magnetometer data to estimate the magnetic field at low altitudes. This work includes rigorous testing to determine under which conditions this iterative method of downward continuation is feasible and accurate.

We used an inversion method (Parker's Method: Parker, 1991, JGR) to determine the mangetization direction of crustal magnetic anomalies on the Moon. We came up with a new method of determining the uncertainty associated with the results, which allowed us to determine that several paleopole (axis of the ancient global dipolar field) locations are 1) equatorial and 2) not aligned with each other. This implies that the Moon's ancient global magnetic axis must have been off from it's spin axis for at least some of its history.

We used a spectral admittance technique to determine the elastic thickness of the Moon. We also did a TON of testing of our method to determine the appropriate uncertainities associated with our results. Our findings suggest that much of the loading on the Moon must have taken place within the first 200 Myr after lunar magma ocean solidification, though some areas (Te > 40 km) may be recording events as late at 3.5 Ga.

I am no longer actively working on these projects, but have presented on these topics in the past

• Mercury Spectroscopy

• Mars Spectroscopy

• Potential Cryovolcanism on Europa