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Volcano Watch — Pavlof: a volcano without typical signs of unrest?

Volcano Watch — Pavlof: a volcano without typical signs of unrest?

Volcanoes commonly give us clues that they are going to erupt. Before an eruption, gas, magma, and other fluids move below the surface of a volcano...

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Photo and Video Chronology – Kīlauea – November 3, 2021

Photo and Video Chronology – Kīlauea – November 3, 2021

The ongoing eruption at Kīlauea's summit began at 3:21 p.m. HST on September 29, 2021. Lava activity is currently confined within Halema'uma'u crater...

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Photo and Video Chronology – Kīlauea – November 2, 2021

Photo and Video Chronology – Kīlauea – November 2, 2021

The ongoing eruption at Kīlauea's summit began at 3:21 p.m. HST on September 29, 2021. Lava activity is currently confined within Halema'uma'u crater...

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Photo and Video Chronology – Kīlauea – November 1, 2021

Photo and Video Chronology – Kīlauea – November 1, 2021

The ongoing eruption at Kīlauea's summit began at 3:21 p.m. HST on September 29, 2021. Lava activity is currently confined within Halema'uma'u crater...

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How do GPS stations monitoring Yellowstone measure such small movements?

How do GPS stations monitoring Yellowstone measure such small movements?

In Yellowstone, deformation of the ground surface can be measured to fractions of an inch.  Specialized methods of processing GPS data make it...

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Photo and Video Chronology – Kīlauea – October 29, 2021

Photo and Video Chronology – Kīlauea – October 29, 2021

The ongoing eruption at Kīlauea's summit began at 3:21 p.m. HST on September 29, 2021. Lava activity is currently confined within Halema'uma'u crater...

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Photo and Video Chronology – Kīlauea – October 28, 2021

Photo and Video Chronology – Kīlauea – October 28, 2021

The ongoing eruption at Kīlauea's summit began at 3:21 p.m. HST on September 29, 2021. Lava activity is currently confined within Halema'uma'u crater...

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Volcano Watch — How high is that lava fountain?

Volcano Watch — How high is that lava fountain?

The rapid onset of the current summit eruption sent USGS Hawaiian Volcano Observatory field crews running to grab their gear and head for the rim of...

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Photo and Video Chronology – Kīlauea – October 26, 2021

Photo and Video Chronology – Kīlauea – October 26, 2021

The ongoing eruption at Kīlauea's summit began at 3:21 p.m. HST on September 29, 2021. Lava activity is currently confined within Halema'uma'u crater...

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New USGS Professional Paper Chapter — A Decade of Geodetic Change at Kīlauea’s Summit— Observations, Interpretations, and Unanswered Questions from Studies of the 2008–2018 Halema‘uma‘u Eruption

New USGS Professional Paper Chapter — A Decade of Geodetic Change at Kīlauea’s Summit— Observations, Interpretations, and Unanswered Questions from Studies of the 2008–2018 Halema‘uma‘u Eruption

A new chapter of USGS Professional Paper 1867, "The 2008–2018 Summit Lava Lake at Kīlauea Volcano, Hawai‘i" was recently published online. The 2008...

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Photo and Video Chronology – Kīlauea – October 25, 2021

Photo and Video Chronology – Kīlauea – October 25, 2021

The ongoing eruption at Kīlauea's summit began at 3:21 p.m. HST on September 29, 2021. Lava activity is currently confined within Halema'uma'u crater...

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How much heat is emitted by hydrothermal areas on the floor of Yellowstone Lake?

How much heat is emitted by hydrothermal areas on the floor of Yellowstone Lake?

Measuring the heat output of a hydrothermal area is not easy—Earth’s surface is often too noisy for accurate measurements to be made easily.  But the...

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