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Volcano Watch — New ages show Haleakalā is a postshield volcano

Volcano Watch — New ages show Haleakalā is a postshield volcano

Haleakalā volcano, on Maui, is still in its postshield stage of volcanic evolution, as determined by 50 new isotopic ages. The volcano was long...

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Volcano Watch — Community-based research team begins to examine vog's health effects

Volcano Watch — Community-based research team begins to examine vog's health effects

"When you can't breathe, nothing else matters." The motto of the American Lung Association resonates for many of us who live on the island of Hawai'i...

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Volcano Watch — The Hawaiian Volcano Observatory will be ninety years old in January

Volcano Watch — The Hawaiian Volcano Observatory will be ninety years old in January

Early next month, the Hawaiian Volcano Observatory (HVO) will commemorate the ninetieth anniversary of its founding. On January 17, 1912, Thomas A...

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Volcano Watch — A lua can be a fine place for a volcanologist

Volcano Watch — A lua can be a fine place for a volcanologist

The roadway into Hawai`i Volcanoes National Park is an obstacle course now, as construction is underway for the new entrance station. The new station...

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Volcano Watch — What happens when lava flows into the sea?

Volcano Watch — What happens when lava flows into the sea?

Lava from Kīlauea continues to flow into the sea at East Kupapa`u and Kamoamoa. The steam plumes that usually rise from these ocean-entry points do...

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Volcano Watch — The ghosts of holiday eruptions past

Volcano Watch — The ghosts of holiday eruptions past

Every year about this time, the HVO staff asks the question: Will the volcano behave over the holidays? Given the amount of volcanic and seismic...

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Volcano Watch — Day in the life of an earthquake analyst

Volcano Watch — Day in the life of an earthquake analyst

A "Volcano Watch" article several months ago provided an overview of the recently installed current earthquakes web pages at the Hawaiian Volcano...

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Volcano Watch — Tidal lunacy

Volcano Watch — Tidal lunacy

Everybody is familiar with ocean tides that cause the ocean level to go up and down, usually twice a day. We can go down to the beach and watch this...

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Volcano Watch — One island chain, several lines of volcanoes

Volcano Watch — One island chain, several lines of volcanoes

Most people know that volcanoes formed the Hawaiian island chain. Few realize, however, that the chain consists of two or more strands of volcanoes...

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Volcano Watch — Long-lived eruptions may contribute to local droughts

Volcano Watch — Long-lived eruptions may contribute to local droughts

Over the past several weeks, visitors to Kīlauea have been treated to views of spectacular surface lava flows cascading down the pali and a new ocean...

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Volcano Watch — What's up with Mauna Loa?

Volcano Watch — What's up with Mauna Loa?

Of the more than 30 eruptions of Mauna Loa in the last hundred years, the 1975 and 1984 eruptions are the first events for which we have detailed...

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Volcano Watch — Ground uplift in Oregon Cascades is tipoff to rising magma

Volcano Watch — Ground uplift in Oregon Cascades is tipoff to rising magma

Volcanologists have long known that when molten rock rises to within 2-10 km (1-6 miles) of the Earth's surface, the overlying ground is often pushed...

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