Fig. 5: Drone observations of the inner crater. | Communications Earth & Environment

Fig. 5: Drone observations of the inner crater.

From: Photogrammetry and analogue experiments in 3D-printed mold applied to the 2022-2023 lava emplacement at Lascar Volcano in Chile

Fig. 5

a Georeferenced drone image showing the funnel structure on the crater floor. The extent of the funnel is outlined by a white dashed circle. Concentric fractures surrounding the funnel are indicated by red arrows. b Georeferenced drone image revealing enlargement of the funnel, marking its progressive development. c Thermal orthomosaic (0.75 m/pixel) showing the highest thermal anomalies concentrated in a circular area on the crater floor, corresponding to the funnel. d Thermal orthomosaic (0.75 m/pixel) displaying markedly reduced thermal anomalies. The funnel and the northern deposit are largely cooled. Optical and thermal maps created using ArcGIS Pro (v3.3).

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