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Figure 1

From: Excess degassing drives long-term volcanic unrest at Nevado del Ruiz

Figure 1

Satellite image of Nevado del Ruiz showing the location of MultiGAS (n = 1) and NOVAC stations (n = 5) used in this study. (A) Distribution of SO2 Max concentrations recorded by the MultiGAS station between 2018 and 2021; and (B) Wind direction data from the NOVAC network, showing good agreement between the location of the permanent MultiGAS station and the predominant wind direction. On the right, photos taken from the monitoring webcams between 2018 and 2021 are courtesy of the Observatorio Vulcanológico y Sismológico de Manizales (Servicio Geológico Colombiano).

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