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Volcano Watch — Forecasting lava flows and eruption clouds

Volcano Watch — Forecasting lava flows and eruption clouds

When lava flows from an erupting vent or from an active lava tube, scientists face the challenge of determining, or forecasting, which areas are...

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Volcano Watch — Eruptions and fires

Volcano Watch — Eruptions and fires

Lava is not fire. People sometimes talk about lava as fire, as in "fire fountain," "curtain of fire," and "river of fire." Most realize that these and...

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Volcano Watch — Monitoring volcanic activity with electronc tiltmeters

Volcano Watch — Monitoring volcanic activity with electronc tiltmeters

Volcanic activity often results in various forms of ground motion. The scale of this motion, or deformation, to use the scientific term, ranges from...

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Volcano Watch — The Yellowstone Volcano Observatory: Monitoring a restless volcanic giant

Volcano Watch — The Yellowstone Volcano Observatory: Monitoring a restless volcanic giant

In 1912, when Thomas Jaggar dug a cellar to house a seismograph on the north rim of Kilauea's caldera, there was only one other volcano observatory on...

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Photo and Video Chronology - Kīlauea - May 16, 2002

Photo and Video Chronology - Kīlauea - May 16, 2002

Pāhoehoe flow at base of Pūlama pali, Kīlauea Volcano, Hawai‘i.

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Volcano Watch — Mauna Loa's eruption of 1916: Great expectations?

Volcano Watch — Mauna Loa's eruption of 1916: Great expectations?

On May 19, 1916, at 7:15 a.m., Mauna Loa began to erupt at about the 3,355 m (11,000 ft) elevation on the southwest rift zone. A mushroom-shaped cloud...

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Volcano Watch — Earthquake location laboratory

Volcano Watch — Earthquake location laboratory

One of the basic objectives for seismographic networks is monitoring and maintaining records of earthquakes and other seismic sources. At the Hawaiian...

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Volcano Watch — Pu`ukapukapu: understandable but still mysterious

Volcano Watch — Pu`ukapukapu: understandable but still mysterious

Pu`ukapukapu sits atop the most imposing cliff along the south coast of Kilauea, towering over the back-country camp site of Halape and dropping 320 m...

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Volcano Watch — Crater-floor eruptions require suitably pressurized magma

Volcano Watch — Crater-floor eruptions require suitably pressurized magma

Lava has been a frequent visitor at Pu`u `O`o cone these past few weeks. It has flooded the crater floor and erupted from vents around the cone...

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Photo and Video Chronology - Kīlauea - April 18, 2002

Photo and Video Chronology - Kīlauea - April 18, 2002

Scenes around Pu`u `O`o and Puka Nui

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Volcano Watch — Volcanoes are a part of the "breathing" of the Earth

Volcano Watch — Volcanoes are a part of the "breathing" of the Earth

One evening a couple of weeks ago, the summit of Kilauea began to deform at an impressive rate. Although the ground tilt and associated tremor caused...

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Volcano Watch — Lest we forget, April is tsunami awareness month

Volcano Watch — Lest we forget, April is tsunami awareness month

April is "Tsunami Awareness Month" in Hawai`i. Tsunami is the deadliest natural hazard in Hawai`i. The month of April is chosen to remind people of...

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