Tag Archive | "usgs"

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Volcano Watch: Kilauea activity update for February 4, 2016

Kīlauea continues to erupt at its summit and East Rift Zone. During the past week, the summit lava lake level was relatively stable.

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Volcano Watch: Why you’ve never heard of Hilo’s Kalanakamaa gulch

The first place we saw this name is the 1870s description of the boundary between the ahupuaʻa of Waiākea and Kūkūau 1.

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Volcano Watch: Kilauea activity update for January 28, 2016

Kīlauea continues to erupt at its summit and East Rift Zone. During the past week, the summit lava lake level was relatively stable, varying between about 35 and 38 m (115–125 ft) below the vent rim within Halema‘uma‘u Crater.

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Volcano Watch: A geological tour of the Hawaiian Islands: Hawaiʻi

As you likely already know, the Island of Hawai‘i is made up of five volcanoes. Less well known is a sixth volcano…

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In this shaded relief and bathymetric map of Maui County, colors indicate water depth, from shallow (orange and yellow) to deep (blue and purple), with shades of gray indicating island areas above sea level. From: U.S. Geological Survey Geologic Investigations Series Map I-2809, “Hawaiʻi’s Volcanoes Revealed”

Volcano Watch: A geologic tour of the Hawaiian Islands: Maui

Despite their close proximity, the volcanoes of Maui Nui have quite different eruptive histories.

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Volcano Watch: Kilauea activity update for January 21, 2016

Kīlauea continues to erupt at its summit and East Rift Zone. On the East Rift Zone, scattered lava flow activity remained within about 4 miles of Puʻu ʻŌʻō Crater.

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In this shaded relief and bathymetric map of O‘ahu, which comprises two volcanoes (Waiʻanae and Koʻolau), colors indicate water depth, from shallow (orange and yellow) to deep (purple), with shades of gray indicating the island area above sea level. From: U.S. Geological Survey Geologic Investigations Series Map I-2809, “Hawaiʻi’s Volcanoes Revealed."

Volcano Watch: A geologic tour of the Hawaiian Islands: Oʻahu

January is Volcano Awareness Month, during which our “Volcano Watch” articles are exploring the geology of the Hawaiian Islands. The series continues this week with a look at Oʻahu.

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Volcano Watch: Kilauea activity update for January 14, 2016

On the East Rift Zone, scattered lava flow activity remained within about 6 km (4 mi) of Puʻu ʻŌʻō.

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Explosive event at Halemaumau ejects unique, hollow Pele’s Tear

Rockfalls impacting Halemaumau’s lava lake trigger explosive events that propel volcanic rock fragments (tephra) upward. A one-of-a-kind, completely hollow Pele’s tear was found after the explosion.

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Volcano Watch: A geologic tour of the Hawaiian islands: Kauaʻi and Niʻihau

Throughout January, the USGS Hawaiian Volcano Observatory (HVO), in cooperation with Hawaiʻi Volcanoes National Park and the University of Hawaiʻi at Hilo will offer public talks around the island.

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Volcano Watch: Kilauea activity update for January 7, 2016

During the past week, the summit lava lake level varied between about 28 and 35 m (95–115 ft) below the vent rim within Halema‘uma‘u Crater.

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An HVO geologist collects a molten lava sample for chemical analysis, scooping up a bit with the rock hammer to then drop in the water bucket to quench it. Puʻu ʻŌʻō is visible in the distance. Photo taken Wednesday, December 30, 2015 courtesy of USGS/HVO

Volcano Watch: Kīlauea Volcano’s East Rift Zone eruption turns 33!

January 3, 2016, marks the 33rd anniversary of the start of the Puʻu ʻŌʻō eruption.

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Feb 5, 2016 / 5:15 pm

 

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