Massive Hunga Volcano Eruption Created an Atmospheric Pulse That Caused an Unusual Tsunami-Like Disturbance

This looping video shows a series of GOES-17 satellite images that caught an umbrella cloud generated by the underwater eruption of the Hunga Tonga-Hunga Ha’apai volcano on January 15, 2022. Crescent-shaped bow shock waves and numerous lighting strikes are also visible. Credit: NASA Earth Observatory image by Joshua Stevens using GOES imagery courtesy of NOAA … Read more

From the archives: Adventurers explore a volcano in ’33

To mark our 150th year, we’re revisiting the Popular Science stories (both hits and misses) that helped define scientific progress, understanding, and innovation — with an added hint of modern context. Explore the Notable pages and check out all our anniversary coverage here. Despite their tragic ends at Mount Unzen in Japan in 1991, prolific … Read more

Antarctic Orca Submarine Volcano Blasted by Swarm of 85,000 Earthquakes

The Carlini base on King George Island, hosting the seismometer located closest to the seismic region, and the Bransfield Strait. Credit: Milton Percy Plasencia Linares In a remote area, a mix of geophysical methods identifies magma transfer below the seafloor as the cause. Even off the coast of Antarctica, volcanoes can be found. A sequence … Read more

Volcano Watch: From Mauna Loa or Kilauea? A geologic whodunnit

Mauna Loa and Kilauea are the two most active volcanoes on the Island of Hawaii, and they have overlapping eruption histories. They are located in close proximity, with their summit craters only about 34 kilometers (21 miles) apart. In fact, part of Kilauea is built on the southeast flank of Mauna Loa, which is the … Read more

Volcano Watch: From Mauna Loa or Kīlauea? A Geologic Whodunnit

Volcano Watch is a weekly article and activity update written by US Geological Survey Hawaiian Volcano Observatory scientists and affiliates. This week’s article was written by Hawaiian Volcano Observatory postdoctoral researcher Julie Chang. Mauna Loa and Kīlauea are the two most active volcanoes on the Island of Hawai’i, and they have overlapping eruption histories. They … Read more

Snowpack changes how a California volcano ‘breathes’

The best-studied tree kill area on Mammoth Mountain is located beside Horseshoe Lake (lower right). Credit: SR Brantley / USGS. Thirty years ago, on the flanks of a volcano in California’s Sierra Nevada range, trees began to die en masse, suffocated at their roots by carbon dioxide seeping up from the mountain’s depths after a … Read more

Volcano Watch – Something new from something old: A new Geologic Map of the State of Hawaiʻi

From US Geological Survey Hawaiian Volcano Observatory scientists and affiliates The original purpose of geologic mapping in Hawaiʻi was to understand the distribution of groundwater and soils to support agriculture. But as geologic maps have been developed over time, they’ve provided basic information on how the Hawaiian Islands evolved, the workings of individual volcanoes, and … Read more

Manmade Volcano Machines And The Unbalancing Of The Geological Carbon Cycle

REYKJANES PENINSULA, ICELAND – MARCH 28: People’s figures are illuminated by the glow of the lava on … [+] March 28, 2021 on the Reykjanes Peninsula, Iceland. (Photo by Sophia Groves / Getty Images) Getty Images This is the fourth article in a series about the mechanics of the natural carbon cycle. Please also see … Read more

Volcano Watch: Remembering the 2011 Kamoamoa eruption

The 35-year-long Pu’u’o’o eruption on the middle East Rift Zone of Kilauea was a remarkable opportunity for scientists to improve volcano research and monitoring. Even short-lived episodes in this eruption, like the four-day-long Kamoamoa eruption, offered important insights. For the 11th anniversary of the Kamoamoa eruption, this week’s “Volcano Watch” highlights the episode and some … Read more

Expedition to highest active volcano unearths clues about life on other worlds

Solon and Steckel venture into a giant, frozen maze of icy, stalagmite-like spikes called penitentes. Credit: Amanda Steckel. A harsh sun shines down through a cloudless sky, across a vast and unforgiving landscape. It is covered in gray rock, giant ice sculptures and expansive fields of spiky, yellow and orange bushes. In the distance, intimidating … Read more