  Marine debris pollution is a growing problem impacting aquatic ecosystems,
coastal recreation, and human society. Beaches are known to be a sink for
debris, and beaching needs to be accounted for in marine debris mass balances.
The process of buoyant debris beaching is not sufficiently well understood in
order to include this process yet. We develop a simplified model for buoyant
marine debris transport in bore-driven swash (where the water wets the beach
with each incoming wave). We validate the model with laboratory experiments and
use the combined results from the model and experiments to understand the
parameters that are important for dictating particle beaching. The most
relevant parameters are the particle inertia and the timing and velocity with
which debris particles enter the swash zone.
