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Fig. 14 | Journal of Applied Volcanology

Fig. 14

From: Volcanic plume height monitoring using calibrated web cameras at the Icelandic Meteorological Office: system overview and first application during the 2021 Fagradalsfjall eruption

Fig. 14

The react.js website used for making height measurements. (A) panel for selecting camera, date, time and atmospheric wind profile. (B) Panel for setting the vent location, plume height, downwind marker distance, and wind orientation (if wind profile data is inaccurate or absent), (C) panel for updating camera orientation parameters if the camera is found to have changed orientation due to storms, the mount sagging, etc. The focal length can also be changed for ptz video streams, which zoom as well as pan and tilt. These are also supported by the website but not further discussed here. (D) The selected webcam image with the horizon plotted in red, the vertical above the vent location in yellow, the horizontal plume height level in cyan and a point d m downwind at plume height marked as a red point

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Journal of Applied Volcanology

ISSN: 2191-5040

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