Tag Archive | "lava"

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Volcano Watch: Kilauea activity update for July 2, 2015

Kīlauea’s East Rift Zone lava flow continues to feed widespread breakouts northeast of Puʻu ʻŌʻō. Active flows are slowly covering and widening the flow field.

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Scattered breakouts remain active northeast of Puʻu ʻŌʻō on the June 27th lava flow, but have not advanced significantly over the past month. This photo shows the farthest reach of active lava on the flow field today, which was about 8 km (5 miles) northeast of the vent on Puʻu ʻŌʻō. Minor brush fires were active where lava was entering forest. Photo taken Friday, June 19, 2015 courtesy of USGS/HVO

Volcano Watch: Kilauea activity update for June 25, 2015

Kīlauea’s East Rift Zone lava flow continues to feed widespread breakouts northeast of Puʻu ʻŌʻō. Active flows are slowly overplating and widening the flow field.

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This 1891 map shows much of the saddle between Mauna Kea (at top of map) and Mauna Loa. Lava flows depicted as black irregular shapes in the lower half of the map were erupted from Mauna Loa, with labeled ages ranging from “ancient” to 1881. The Mauna Kea branch of the 1880–1881 lava flow, visible as a small, thumb-shaped flow at the bottom center of the map, sits atop the much larger 1855–1856 lava flow that also threatened Hilo. To see details of this extraordinary map, go to http://ags.hawaii.gov/survey/map-search/, enter "1718" in the "Registered Map No." box, and click "Search" to open the full resolution map. Map courtesy of Hawaii State Archives.

Volcano Watch: Map and newspaper archives help unravel the eruptive histories of Hawaiian volcanoes

USGS Hawaiian Volcano Observatory scientists extract as much insight as possible from historic accounts of eruptions, and then combine that information with current observations.

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One month ago the summit lava lake was at the rim of the Overlook crater (the small crater in the center of the photo), spilling lava onto the floor of Halemaʻumaʻu Crater (the larger crater that fills much of the photo), creating the dark flows surrounding the Overlook crater. Since that time the lava lake has dropped, associated with summit deflation, and today the lake level was about 60 meters (200 feet) below the Overlook crater rim. The stack of recent overflows is visible on the wall of the Overlook crater as the layer of dark lava atop the older, light colored lava forming the majority of the Overlook crater wall. The photo is taken from the southeast rim of Halemaʻumaʻu Crater. The closed Halemaʻumaʻu overlook is in the upper left corner of the photo. Jaggar Museum and HVO can be seen as a small bump on the horizon in the upper right portion of the photograph. Photo taken Thursday, June 9, 2015 courtesy of USGS/HVO

Volcano Watch: Kilauea activity update for June 11, 2015

Kīlauea’s summit lava lake level fluctuated over the past week, but remained well below the Overlook crater rim. Kīlauea’s East Rift Zone lava flow continues to feed widespread breakouts northeast of Puʻu ʻŌʻō. Active flows remain within about 5 miles of Puʻu ʻŌʻō.

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Volcano Watch: Kilauea activity update for June 4, 2015

Kīlauea’s summit lava lake level fluctuated over the past week, but remained well below the Overlook crater (vent) rim and out of direct view from Jaggar Museum.

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Ashfall damages corn crop in Ecuador following an eruption of Tungurahua Volcano. Photograph courtesy Patricio Ramon, Escuela Politécnica Nacional, Quito, Ecuador.

Volcano Watch: International team visits Hawaii to study impacts of volcanic ash, volcanic gas and lava flows

For the next two weeks, the USGS/HVO hosts scientists from New Zealand and Alaska who are funded in part by a joint U.S. – New Zealand Commission on Science and Technology Cooperation.

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Volcano Watch: Kilauea activity update for May 28, 2015

Kīlauea’s summit lava lake level fluctuated over the past week, but remained well below the Overlook crater (vent) rim and out of direct view from Jaggar Museum.

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Volcano Watch: Kilauea activity update for May 21, 2015

Kīlauea’s summit lava lake level dropped rapidly in response to summit deflation. Kīlauea’s East Rift Zone lava flow continues to feed widespread breakouts northeast of Puʻu ʻŌʻō.

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Kīlauea Volcano’s summit lava lake dropped from nearly overflowing on April 26, 2015 (left), to about 62 m (203 ft) below the newly created (by multiple overflows) vent rim on May 15, 2015 (right). Photo courtesy of USGS/HVO

Volcano Watch: Recent activity highlights Kīlauea Volcano’s restless nature

Kīlauea made the news this past month with many changes, including an elevated lava lake level at the volcano’s summit. So, what exactly happened over the past month, and what does it mean?

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Kīlauea Volcano's summit lava lake continued to drop today (May 15, 2015). Measurements of the lake surface late Friday afternoon (May 15) showed that it was 62 m (203 ft) below the top of the newly-created vent rim, a ridge (or levee) of solidified lava about 8 m (26 ft) thick that accumulated on top of the Halemaʻumaʻu Crater floor from multiple overflows of the vent during the past two weeks. Photo taken Friday, May 15, 2015 courtesy of USGS/HVO

Magma moves towards the Southwest Rift Zone after drop in Halemaumau lava lake

On Wednesday (May 13), the focus of deformation changed to the southern part of Kīlauea’s summit caldera and upper Southwest Rift Zone, where rapid and localized inflationary tilt was recorded.

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Volcano Watch: Kilauea activity update for May 14, 2015

Kīlauea’s summit lava lake dropped out of view early in the week in response to summit deflation. As of Thursday, May 14, the lake was about 120 feet below the vent rim.

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Volcano Watch: Restless activity beneath Mauna Loa continues

The recent high lava lake levels at Kīlauea Volcano have caught the attention of visitors and kama‘aina alike. But we shouldn’t forget that unrest at Mauna Loa continues.

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Jul 2, 2015 / 5:15 pm

 

 

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