Figure 2
From: Hydrogeochemical changes before and during the 2016 Amatrice-Norcia seismic sequence (central Italy)

Chebotarev’s classification diagram for groundwater. This figure has been realized using Grapher 7. All groundwater analyzed in this work falls within the calcium-bicarbonate quadrant. See ref.98 for the creation method of Chebotarev’s diagram.