Tag Archive | "volcano watch"

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Volcano Watch: Kilauea activity update for February 19, 2015

The summit lava lake level fell from about 10 m (30 ft) during the week, and was about 45 meters (150 ft) below the rim of the Overlook crater as of Thursday, February 19, 2015.

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Volcano Watch: Volcano watching on the other side of the world

On the morning of February 4, 2015, Piton de la Fournaise started to erupt. Although more than 10,000 miles from Hawai‘i, this eruption was of unusual importance for scientists studying Kīlauea.

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Volcano Watch: Deformation specialist changes the shape of HVO for the better

In the 10 years since Mike Poland joined the USGS Hawaiian Volcano Observatory staff, he has accomplished a tremendous amount of research, mentored a vast number of students and young researchers, forged close friendships and warm collegial relationships at HVO.

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Lava diversion was successful during the 1983 eruption. Photograph of the Sapienza barrier by Jack Lockwood, U.S. Geological Survey, May 29, 1983.

Volcano Watch: What does it take to successfully divert a lava flow?

In discussions about lava diversion, Italy and Iceland are often touted as places where lava flows have been successfully diverted. But what did it take for those efforts to succeed?

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Another view of the flow front in the northwest portion of Kaohe Homesteads. The leading portion of the flow front narrowed over the past two days and was roughly 150 m (500 ft) wide. Photo courtesy of USGS/HVO

Volcano Watch: HVO and Hawai‘i County Civil Defense jointly track the June 27th lava flow

The USGS Hawaiian Volcano Observatory (HVO) and Hawai‘i County Civil Defense (HCCD) are working closely together to gather and share information about the June 27th lava flow through daily helicopter overflights.

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A closer look at the lava lake at Kīlauea's summit. The lake was roughly 53 m (170 ft) below the floor of Halemaʻumaʻu Crater the morning of September 17, 2014. Photo courtesy of USGS/HVO

Volcano Watch: Kilauea activity update for September 18, 2014

The summit lava lake within Halemaʻumaʻu Crater produced nighttime glow that was visible via HVO’s webcam over the past week.

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Volcano Watch: Kilauea activity update for September 11, 2014

The summit lava lake within Halemaʻumaʻu Crater produced nighttime glow that was visible via HVO’s webcam over the past week. The lava lake level ranged from 180‒215 ft below the rim of the Overlook crater.

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View from above the end of the June 27th lava flow, looking along its northeast trend through the Wao Kele o Puna Forest Reserve. On the afternoon of September 10, 2014, the flow front was 0.6 km (0.4 mi) from the boundary between the Forest Reserve and Kaohe Homesteads, visible at far right. Photo courtesy of USGS/HVO

Volcano Watch: The June 27th flow advances toward Pāhoa

The flow narrowness and rapid development of a robust tube system within subsurface cracks make the June 27th lava flow unique among the hundreds of lava flows that Puʻu ʻŌʻō has erupted.

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A closer look at the stream of lava pouring into the deep ground crack on Monday (Sept 1). Photo courtesy of USGS/HVO

Volcano Watch: HVO scientists are closely watching Kīlauea—and Mauna Loa

The USGS Hawaiian Volcano Observatory (HVO) is closely tracking the Kīlauea lava flow, which is threatening residential areas in the Puna District of the island.

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Volcano Watch: Kilauea activity update for August 29, 2014

On the East Rift Zone of Kīlauea Volcano, the June 27th flow from Puʻu ʻŌʻō remained active. The farthest point on the steaming ground crack was 11.9 km (7.4 mi) from the vent.

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This figure compares the photo above with an equivalent view from a thermal camera on August 28, 2014. The plumes of smoke mark the farthest active lava on the surface (small, scattered lobes of pāhoehoe), which are also shown as small hotspots in the thermal image. The pad of lava that emerged from the ground crack earlier this week was inactive at the surface but still quite warm (high temperature patch in center of image). East of this pad of lava, steaming (just below the center of the photograph) has appeared over the past day, suggesting that lava is continuing to advance below the surface along a ground crack. Direct views into the crack were not possible due to thick vegetation, but close views of the steaming areas with the thermal camera reveal temperatures up to 190 C (370 F). These high temperature are further evidence of lava moving through the crack. Photos courtesy of USGS/HVO

Volcano Watch: June 27th lava flow activity continues, so stay informed!

In response to the USGS/HVO Aug. 22, 2014, news release that Kīlauea’s June 27th lava flow could become a concern for communities downhill of the Pu‘u ‘Ō‘ō vent, the Hawaii County Civil Defense Agency has quickly organized a series of informational meetings.

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On August 5 2014, the Visible Infrared Imaging Radiometer Suite (VIIRS) sensor on Suomi-NPP captured natural-color images of both Iselle and Hurricane Julio en route to Hawaii. The image above is a composite of three satellite passes over the tropical Pacific Ocean in the early afternoon. Note that Iselle’s eyewall had grown less distinct; the storm had descreased to category 2 intensity. The bright shading toward the center-left of the image is sunglint, the reflection of sunlight off the water and directly back at the satellite sensor. NASA image by Jeff Schmaltz, LANCE/EOSDIS Rapid Response." width="595" height="396" /> On August 5 2014, the Visible Infrared Imaging Radiometer Suite (VIIRS) sensor on Suomi-NPP captured natural-color images of both Iselle and Hurricane Julio en route to Hawaii. The image above is a composite of three satellite passes over the tropical Pacific Ocean in the early afternoon. Note that Iselle’s eyewall had grown less distinct; the storm had descreased to category 2 intensity. The bright shading toward the center-left of the image is sunglint, the reflection of sunlight off the water and directly back at the satellite sensor. NASA image by Jeff Schmaltz, LANCE/EOSDIS Rapid Response.

Volcano Watch: How do volcanoes affect the weather and climate?

Conventional wisdom among many residents was that the Island of Hawai‘i is immune to hurricanes because its large volcanic mountains obstruct approaching storms, diverting them around the island.

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Mar 4, 2015 / 5:15 pm

 

 

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