Carpi, Katelyn2021-11-292021-11-292021-05-012021-08-10http://hdl.handle.net/20.500.13013/1516The stratigraphy and depth to bedrock at the Forest River salt marsh in Salem, MA was constrained using seismic refraction methods. A ~2 m layer of peat was found on top of a layer of glaciomarine clay, with a transition layer in between. The depth to bedrock was constrained to greater than 19.5 m. Two surveys were completed and each had different p-wave velocities for both of the materials. The tide and weather conditions were then researched. It was concluded that the change in p-wave velocity from one survey to the next was due to a change in density caused by an increase of moisture in the area.eventGeologySeismic RefractionStratigraphy