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Interferogram shows range change at Mauna Loa and Kīlauea
 

Interferogram shows range change at Mauna Loa and Kīlauea

The lack of any basalt in Yellowstone caldera—the existence of a magmatic "shadow"—is good evidence that the rhyolite magma chamber is still at least...

Portulaca sclerocarpa (also known as ‘Ihi mākole) is a critically endangered small succulent plant in the purslane family (Portulacaceae). It only...

Images acquired using inexpensive cameras from airborne platforms can be used to monitor surface changes in thermal areas over a variety of spatial...

Continuing with the Volcano Awareness Month theme of people and their work at the USGS Hawaiian Volcano Observatory, we move on to another role at HVO...

 Yellowstone National Park contains rock formations that span over half the Earth's 4.6-billion-year lifespan! 

The U.S. Geological Survey's Hawaiian Volcano Observatory (HVO) recorded a magnitude-4.2 earthquake located beneath Kīlauea Volcano's south flank on...

Halema‘uma‘u crater lake on January 31

When I was seven years old, I won my county's earthquake safety poster contest. I remember going to a special award luncheon with the mayor, who...

Hydrothermal explosions are the most likely of Yellowstone's various volcanic hazards, and the potential for additional future explosions is not...