A Direct-Push Sample-Freezing Drive Shoe for Collecting Sediment Cores with Intact Pore Fluid, Microbial, and Sediment Distributions

Jared Trost, USGS Minnesota Water Science Center, Mounds View, United States, Barbara A Bekins, U.S. Geological Survey, Branch of Hydro-Ecological Interactions, Menlo Park, CA, United States, Thomas M Christy, Geoprobe Systems, Salina, KS, United States and Brent Mason, USGS Minnesota Water Science Center, Mounds View, MN, United States