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Daily updates about ongoing eruptions, recent images and videos of summit and East Rift Zone volcanic activity, maps, and data about recent earthquakes in Hawaii are posted on the HVO website. 

Volcano Watch is a weekly article and activity update written by U.S. Geological Survey Hawaiian Volcano Observatory scientists and colleagues.

Filter Total Items: 1818
Volcano Watch — Surviving a Tsunami

Volcano Watch — Surviving a Tsunami

With great sorrow and shock, the world is bearing witness to the horrendous effects of the earthquake and tsunami that occurred in the Indian Ocean...

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Volcano Watch — Volcanic gas measurements on Mauna Loa are an expanded challenge

Volcano Watch — Volcanic gas measurements on Mauna Loa are an expanded challenge

Several recent Volcano Watch articles have discussed the difficult nature of making specific eruption predictions about Mauna Loa, the largest volcano...

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Volcano Watch — All basalts are not born equal?

Volcano Watch — All basalts are not born equal?

Recently, an important volcanological meeting of minds took place in Pucon, Chile. It was the International Association of Volcanology and Chemistry...

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Volcano Watch — New instruments on Mauna Loa detect changing inflation

Volcano Watch — New instruments on Mauna Loa detect changing inflation

In early December every year, thousands of earth scientists gather in San Francisco to present and discuss their latest findings. This meeting is...

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Volcano Watch — Seasonal surprises are not only in Santa's realm

Volcano Watch — Seasonal surprises are not only in Santa's realm

As winter solstice draws near, the seasonal tradition of illuminating this darkest time of year becomes more obvious. Already many homes, shops, and...

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Volcano Watch — To be or not to be a lava bench or delta

Volcano Watch — To be or not to be a lava bench or delta

What's in a name? In geology, plenty. Some of the biggest controversies erupt over terminology. For example, HVO scientists like to argue over terms...

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Volcano Watch — Deep Mauna Loa seismicity continues

Volcano Watch — Deep Mauna Loa seismicity continues

While breakouts in the coastal area below Pu`u `O`o, attract renewed attention from scientists and visitors alike, seismologists at the U.S...

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Volcano Watch — Designing new eyes for monitoring volcanoes

Volcano Watch — Designing new eyes for monitoring volcanoes

Scientists have all sorts of ways to remotely monitor volcanoes. Here at Hawaiʻian Volcano Observatory, for example, we use seismometers, GPS...

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Volcano Watch — Red-rock junkies are enjoying the show: Kīlauea lava flows pour into sea, Mount St. Helens lava pushes up snow and ice

Volcano Watch — Red-rock junkies are enjoying the show: Kīlauea lava flows pour into sea, Mount St. Helens lava pushes up snow and ice

Lava erupting from the Pu`u `O`o vent is again spilling into the sea and adding new land along Kīlauea's shoreline to the delight of red-rock junkies...

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Volcano Watch — Kīlauea provides a basis for research into alien atmospheres

Volcano Watch — Kīlauea provides a basis for research into alien atmospheres

Thomas Jaggar, the first director of the Hawaiʻian Volcano Observatory, from 1912-1940, probably never imagined that the gas compositions he measured...

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Volcano Watch — Mauna Loa events in 1903 - separating the wheat from the chaff

Volcano Watch — Mauna Loa events in 1903 - separating the wheat from the chaff

As we await the next eruption of Mauna Loa, some HVO scientists have been looking at old eruption records which enable us to see trends that could...

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Volcano Watch — Who da guy behind the HVO daily web updates?

Volcano Watch — Who da guy behind the HVO daily web updates?

The Hawaiʻian Volcano Observatory website (hvo.wr.usgs.gov) gets over half-a-million visitors a month. Most of those hits are folks checking out the...

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