Evan Arntzen

Father, Husband, Geologist, Environmental Compliance Rep

[Evan Arntzen @evan_arntzen]

Hard charging science in action! Regulated river flows in the Hanford Reach of the Columbia River provide ideal conditions to test ideas and measure conditions within the hyporheic zone. https://t.co/0DCGTsQlnm

[James Stegen @JamesStegen]

New video showing install of subsurface peepers in Columbia River sediments, with @kcwrighton. Peepers have chambers distributed at different depths that equilibrate with solutes in the pore water to interrogate biogeochemical function. #PNNLSBRSFA @doescience @PNNLab