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Volcano Watch — A fresh look at Kīlauea’s 1924 explosive deposits

Volcano Watch — A fresh look at Kīlauea’s 1924 explosive deposits

Last week’s “Volcano Watch” summarized Kīlauea’s explosive eruptions of 1924 and their impacts on communities. This week, we dig a little deeper and...

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Volcano Watch — The blast of the century at Kīlauea

Volcano Watch — The blast of the century at Kīlauea

Kīlauea began erupting explosively 100 years ago this week, for the first time in nearly a century. The eruption lasted for about 17 days, killing one...

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Volcano Watch — What’s shaking at the summit of Kīlauea?

Volcano Watch — What’s shaking at the summit of Kīlauea?

This past week, earthquakes and inflation near Kīlauea’s summit prompted temporary closures within Hawaiʻi Volcanoes National Park. What is happening...

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Photo and Video Chronology — Webcam upgrades on the Southwest Rift Zone of Mauna Loa

Photo and Video Chronology — Webcam upgrades on the Southwest Rift Zone of Mauna Loa

On April 24, HVO staff installed a new webcam and upgraded an existing webcam on the Southwest Rift Zone of Mauna Loa. 

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Volcano Watch — Introducing HVO's new online eruption map

Volcano Watch — Introducing HVO's new online eruption map

The production of maps to track the progress of ongoing eruptions has long been part of the USGS Hawaiian Volcano Observatory (HVO) mission to inform...

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Preparing for volcano hazards: Where is the world’s largest lahar evacuation drill held?

Preparing for volcano hazards: Where is the world’s largest lahar evacuation drill held?

At around 14,410-feet Mount Rainier, a snowcapped volcano in the Cascade Range, towers above the Puget Lowlands.  

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Photo and Video Chronology — Drying out at Kīlauea summit and new USGS Data Release

Photo and Video Chronology — Drying out at Kīlauea summit and new USGS Data Release

HVO staff visited the KWcam site on April 18 to replace desiccant and dry out the enclosure. A new USGS Data Release publishes measurements of the...

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How tall are you really? Establishing Mount Shasta's summit elevation in the 20th century

How tall are you really? Establishing Mount Shasta's summit elevation in the 20th century

There are a couple of ways to make a volcano shorter: it could have an eruption or a debris avalanche, or it could simply erode over time. Or, it...

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Volcano Watch — HVO and Collaborators Continue Seismic Surveys Across the Active Volcanoes of Hawaii

Volcano Watch — HVO and Collaborators Continue Seismic Surveys Across the Active Volcanoes of Hawaii

The Island of Hawai‘i is one of the most seismically active regions in the world. In the last five years, an average of 600-1200 earthquakes per week...

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Volcano Watch — STEM and suction solutions at HVO

Volcano Watch — STEM and suction solutions at HVO

STEM is an acronym that stands for Science, Technology, Engineering and Mathematics. In the educational system, encouraging STEM curriculum prepares...

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How hot is Long Valley Caldera?

How hot is Long Valley Caldera?

Measuring the temperature of lava erupting on the Earth’s surface is possible with the right equipment. But how do you figure out the temperature of...

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Volcano Watch — Using acoustic signals to identify the start of 2022 Mauna Loa eruption

Volcano Watch — Using acoustic signals to identify the start of 2022 Mauna Loa eruption

The 2022 eruption of Mauna Loa occurred late in the evening of November 27th. The eruption was preceded by intense earthquake activity about half an...

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