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Volcano Watch — HVO: 1996 in review

Volcano Watch — HVO: 1996 in review

As 1996 draws to a close, we can look back and reflect on the tumultuous year that the U.S. Geological Survey's Hawaiian Volcano Observatory...

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Volcano Watch — Big Island geologic map

Volcano Watch — Big Island geologic map

Volcanoes, glacial deposits, and faults related to huge undersea landslides are three of the remarkable geologic features depicted on a colorful new U...

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Volcano Watch — Geologic hazards on Maui

Volcano Watch — Geologic hazards on Maui

Much has been said in past columns about the volcanic and seismic hazards on the Big Island, but what about the hazards on the other islands?

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Volcano Watch — Kīlauea has its faults

Volcano Watch — Kīlauea has its faults

Visitors to the lava viewing area at the end of the Chain of Craters road in Hawai`i Volcanoes National Park travel over one of the largest fault...

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Volcano Watch — A Mauna Loa SW rift eruption 240 years ago

Volcano Watch — A Mauna Loa SW rift eruption 240 years ago

William D. Westervelt, in his 1916 book "Hawaiian Legends of Volcanoes", recounted a story about the origin of the two hills called "Na Pu`u a Pele,"...

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Volcano Watch — Hawaii Scientific Drilling Project

Volcano Watch — Hawaii Scientific Drilling Project

Early last week, C. Barry Raleigh, Dean of the School of Ocean and Earth Science and Technology at the University of Hawaii, Manoa, announced that the...

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Volcano Watch — Volcanic gases provide clues to how volcanoes work

Volcano Watch — Volcanic gases provide clues to how volcanoes work

In a double handful of molten magma (weighing about a pound), there is less than a tenth of an ounce, by weight, of dissolved gas—roughly the same...

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Volcano Watch — Measuring the mountains: Ground deformation of Hawaii's volcanoes

Volcano Watch — Measuring the mountains: Ground deformation of Hawaii's volcanoes

The ground's surface around the active Hawaiian volcanoes Kīlauea and Mauna Loa is constantly changing. Lava flows laminate their sides during active...

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Volcano Watch — Deep earthquakes

Volcano Watch — Deep earthquakes

Each year, the Hawaiian Volcano Observatory records thousands of earthquakes with its island-wide network of seismographs. Often, many of these...

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Volcano Watch — Scientists measuring Mauna Loa

Volcano Watch — Scientists measuring Mauna Loa

Last week scientists at the U.S. Geological Survey's Hawaiian Volcano Observatory (HVO) began their annual ground deformation surveys at the summit of...

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Volcano Watch — Age and appearance of lava flows

Volcano Watch — Age and appearance of lava flows

When visitors to this island arrive at the Keahole airport and travel along the Queen Ka'ahumanu highway to a hotel in south Kohala, they cannot help...

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Volcano Watch — Seismology at the Hawaiian Volcano Observatory

Volcano Watch — Seismology at the Hawaiian Volcano Observatory

Seismology, the science of earthquakes and the mechanical properties of the Earth, is the primary method used to monitor the volcanoes of Hawaii and...

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