The first five years of Kīlauea's summit eruption in Halemaʻumaʻu Crater, 2008-2013
… From the time the eruption began, the new "Overlook crater" inside Halemaʻumaʻu has exhibited fluctuating lava lake activity, occasional small explosive events, and a persistent gas plume. The beautiful nighttime glow impresses and thrills visitors in Hawaiʻi Volcanoes National Park, but the continuous emission of sulfur dioxide gas produces "vog" (volcanic smog) that can severely affect communities and local agriculture downwind. … See Fact Sheet for more info.
Recent HVO research paper
Continuous monitoring of Hawaiian volcanoes with thermal cameras
… Thermal cameras can sometimes "see" through volcanic fume that obscures views to visual webcams and the naked eye, and often provide a much clearer view of the extent of high temperature areas and activity levels. We describe a thermal camera network recently installed by the Hawaiian Volcano Observatory to monitor Kīlauea's summit and east rift zone eruptions (at Halemaʻumaʻu and Puʻu ʻŌʻō craters, respectively) and to keep watch on Mauna Loa's summit caldera. … See paper for more info.