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The USGS Hawaiian Volcano Observatory monitors the six currently active volcanoes in Hawaii, but past eruptions have shaped all of the Hawaiian...

The USGS Hawaiian Volcano Observatory (HVO) keeps its eyes on active volcanoes in many ways.  While old fashioned eyes and a notebook are used when...

In December 2022, a team of scientists from Aotearoa New Zealand teamed up with scientists from the USGS Hawaiian Volcano Observatory (HVO) to carry...

Native Hawaiian oral traditions record a rich history of the changing volcanic landscape in Hawaiʻi. Interweaving cultural knowledge with scientific...

Geologic mapping has been one of the most fundamental mandates of the U.S. Geological Survey (USGS) since its establishment in 1879. Congress created...

In this third edition of "Eruptions of Hawaiian Volcanoes—Past, Present, and Future," we include information about Kīlauea’s 2018 eruption in the...

Over the past century, technological advancements have vastly improved volcano monitoring. One key innovation was the introduction of modern borehole...

Topographic mapping has been a key component of volcano monitoring for decades, helping scientists to study morphologic changes and predict the paths...

Kīlauea is one of the most active volcanoes in the world with eruptions common both at its summit caldera and within its two rift zones. Frequent...

We asked CVO scientists what volcanoes smell like; here is what they said.