Anandakrishnan, S., Bilén, S.G., Urbina, J.V., Bock, R.G., Burkett, P.G., Portelli, J.P., 2021. The geoPebble System: Design and Implementation of a Wireless Sensor Network of GPS-Enabled Seismic Sensors for the Study of Glaciers and Ice Sheets 12.. https://doi.org/10.3390/geosciences12010017