Poroelastic Convection Modeling

Tidal signals are often found in in time-series measurements of black smoker fluid properties. In order to explore the effects of tidal loading on mid-ocean ridge hydrothermal systems, and to determine if these signals might originate from deep within the crust, I developed a series of numerical poroelastic convection models. The code was written from scratch in Matlab, and solves the equations governing linear poroelasticity and porous convection in two dimensions.

The models indicate that under certain circumstances, the measured tidal signals may be generated by tidal loading. The models also predict strong subseafloor mixing and large flow rate changes as a result of tidal forces. These latter findings have inspired my current interest in the development of flow measurement techniques for use in these systems.

Complete results of this work are now available in the journal Geochemistry, Geophysics, Geosystems (G3). A PDF version of the paper is available here.

Additional Files

Below we provide a supplementary file that was not published with the original paper.

Pressure Animation (8 MB mov) Animation showing the pore pressure change over the course of a single tidal cycle for Model 1.