TY - RPRT TI - Volcanic hail detected with GPS: The 2011 eruption of Grímsvötn Volcano, Iceland AU - Ronni Grapenthin AU - Sigrun Hreinsdottir AU - Alexa R. Van Eaton PY - 2018 DO - 10.1029/2018gl080317 UR - https://pubs.usgs.gov/publication/70219471 ID - 70219471 ER -