“When will Mauna Loa erupt next?” This was the title of a Volcano Awareness Month video presentation released by the USGS Hawaiian Volcano Observatory in January. This was also the topic of discussion among HVO scientists last week following the detection of slight changes in ground deformation and seismicity at the summit of Mauna Loa.
Kilauea’s current lava lake formed on Dec. 20, 2020, and rose rapidly within Halema’uma’u crater during the dynamic first week of the ongoing summit eruption. Near the end of December, the eruption stabilized and the lava lake has been slowly changing since then.
This story begins after Kilauea’s May 4, 2018, magnitude-6.9 earthquake and lower East Rift Zone eruption. The magnitude-6.9 earthquake resulted in seaward motion at the surface of Kilauea’s south flank of up to approximately 1.5 feet as measured by GPS monitoring stations operated by the U.S. Gelogical Survey’s Hawaiian Volcano Observatory.
Words matter in volcanology just as in the rest of society. Words matter among volcanologists themselves, of course, but they particularly matter in our dealings with the public, when we attempt to both tell what is happening and educate about how volcanoes work. Accuracy of words promotes understanding and clarity of thought and is essential to both telling and educating.
Every rock on Earth is made of up a unique combination of chemical elements, and lavas/tephra formed during Hawaiian eruptions are no exception. What is the geochemistry of Kilauea’s newest tephra — and how can it help us understand the processes driving the ongoing eruption?
Volcanic gases are an important part of eruptions — they help magma to rise within the earth and erupt, they can tell us how much lava is being erupted, and the volcanic air pollution (vog) they cause can be a hazard. So it is important for the USGS Hawaiian Volcano Observatory (HVO) to measure how much of what kind of gas is being emitted by our volcanoes.
Tephra is any type and size of rock fragment that is forcibly ejected from a volcano and travels an airborne path during an eruption. Examples include ash, bombs, scoria, and shards of volcanic glass such as Pele’s hair and Pele’s tears).
Lava activity remains confined to Halema‘uma‘u crater, the Hawaiian Volcano Observatory reported Tuesday morning.
Voggy conditions are forecast for West Hawaii through at least midweek as Kilauea’s most recent eruption continues, forecasters said.
It has been an exciting week at Kilauea Volcano as the summit eruption that began on the evening of December 20th continues. The eruption remains confined within Halema‘uma‘u crater. Monitoring data show no signs of activity migrating from the summit into the rift zones, nor indications of summit collapse like those in 2018.
HONOLULU — Park rangers have cited dozens of people who have gathered at Hawaii Volcanoes National Park to witness an ongoing eruption of the Kilauea volcano.
‘Twas the Sunday before Christmas, the eve of the winter solstice, and festive holiday lights blinked of bright red and green. And then, shortly after 9:30 p.m. on Dec. 20, so did the Hawaiian Volcano Observatory’s (HVO’s) volcano alert level/aviation color codes for Kilauea!
Two vents continued to feed lava into a rapidly enlarging lava lake filling Halema‘uma‘u crater, the Hawaiian Volcano Observatory said.