After Dark in the Park Video Archives - Jan 28 2014
As magma rises from the Earth's mantle to the surface, the expansion of volcanic gases drives the spectacular lava fountains and flows erupted by Hawaiian volcanoes. While Kīlauea still produces picturesque lava flows from its East Rift Zone, and its summit crater hosts a dynamic lava pond, it also releases huge amounts of volcanic gases which have negatively impacted downwind communities, agriculture, and infrastructure for years. Jeff Sutton and Tamar Elias, USGS Hawaiian Volcano Observatory geochemists, will offer an update about these gases, especially those related to the 2008‐2013 activity at Halema'uma'u Crater, and will talk about volcanic pollution (vog)—how it forms and what we've learned about its effects on our island environment. An optional "gas- tasting" party will follow the talk.