Constraining short-­ and long-­term tectonic deformation above the Manila Trench, Western Luzon, Philippines, using uplifted corals and beach dunes

In order to better understand deformation above the Manila trench at multiple timescales, we propose to investigate coral microatolls, uplifted terraces, and uplifted beach dune sequences along the west coast of Luzon. The three components are complementary and will elucidate both the long-­‐term deformation history and the seismogenic potential of the Manila trench. Microatolls allow for the precise measurement of both sudden and gradual vertical deformation, thereby constraining past interseismic coupling and coseismic slip. Uplifted terraces and beach dunes offer less precise constraints, but provide context over longer timescales and critical data where microatolls are not found.