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Fig. 1 | Journal of Applied Volcanology

Fig. 1

From: Lava flow hazard prediction and monitoring with UAS: a case study from the 2014–2015 Pāhoa lava flow crisis, Hawai‘i

Fig. 1

a Map displaying the June 27th flow footprint near the town of Pāhoa. Ground Control Points (GCP) depicted as white crosses (pre-flow GCPs) and blue crosses (post-flow GCPs) with corresponding numbers. In early December, 2014, the County bulldozed a firebreak to contain wildfires sparked by the lava flow. The firebreak provided access to the densely vegetated area for placing GCPs and conducting UAS flights. b UAS fixed-wing aircraft used in this study (SenseFly SwingletCAM) c Ground control station including laptop, radio telemetry modem, sun-shade box, and tripod. d UAS crew member communicating with nearby aircraft using a two-way aviation VHF radio. e Obtaining GCP geographic coordinates with a differential GPS Trimble Explorer 6000 unit and Zephyr external antenna. f June 27th flow surrounding a GCP

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