Tag Archive | "usgs"

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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Kīlauea lava flow northeast of Pu‘u ‘Ō‘ō a potential concern

The June 27th lava flow, named for the date it began erupting, continues to advance to the northeast of its vent on the flank of Pu‘u ‘Ō‘ō on Kīlauea Volcano’s East Rift Zone.

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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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Volcano Watch: Kilauea activity update for August 21, 2014

On the East Rift Zone of Kīlauea Volcano, the June-27th flow from Puʻu ʻŌʻō advanced toward the northeast and was 9.4 km (5.8 miles) from the vent on August 18.

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Greg Javar snaps a “selfie” while helping USGS Hawaiian Volcano Observatory geologist Matt Patrick (right) set up a thermal camera to record lava lake activity within the summit vent of Kīlauea Volcano. Javar and fellow UH-Mānoa student Pua Pali (not shown) were selected to intern at HVO this summer through the Native Hawaiian Science and Engineering Mentorship Program.

Volcano Watch: University of Hawaii students complete summer internships HVO

This week, the HVO bids aloha to two interns, Pua Pali and Greg Javar, who gained first-hand experience monitoring volcanoes and earthquakes by working with USGS scientists this summer.

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USGS volcano and eathquake monitoring restored after Tropical Storm Iselle

As of Wednesday afternoon, August 13, all power issues were resolved and the U.S. Geological Survey Hawaiian Volcano Observatory resumed monitoring volcanoes and earthquakes.

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Volcano Watch: Kilauea activity update for August 6, 2014

On the East Rift Zone of Kīlauea Volcano, the June-27 flow from Pu‘u ‘Ō‘ō continued to advance toward the northeast and reached 7.0 km (4.3 miles) from the vent by mid-week.

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Kilauea’s current eruption is a natural laboratory for volcanologists

Volcano Watch: If it happened yesterday, it can happen tomorrow

We can be thankful that Kīlauea is in a quiet period now, but we shouldn’t have an ostrich mentality about the future.

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Volcano Watch: Kilauea activity update for July 31, 2014

Kīlauea’s summit lava lake within Halema‘uma‘u produced nighttime glow that was visible via HVO’s Webcam over the past week.

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Landslides triggered by the magnitude-6.7 Kīholo Bay and magnitude-6.0 Māhukona earthquakes on October 15, 2006, stripped vegetation from the East Branch of Honokāne Nui Valley and extensively damaged the Kohala Ditch Trail that zigazags across the valley wall. USGS photo.

Volcano Watch: Hawaii still rocks!

Hawaii was listed among the 16 states facing the highest risk for earthquakes. The 6.7 magnitude Kiholo Bay quake and 6.0 magnitude Mahukona quake in 2006 stripped vegetation from valley walls.

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Spatter landed on wooden fencing laying on the ground at the closed tourist overlook, igniting it in a few places. Photo taken on Wednesday (July 23). Photo courtesy of USGS/HVO

Volcano Watch: Kilauea activity update for July 24, 2014

A collapse at the Halemaumau Overlook Vent Wednesday (July 23) sent molten lava flying out of the vent and onto the abandonded visitor’s area burning the old wooden fencing.

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Composite false-color Landsat-8 satellite image of Semisopochnoi Island on July 14, 2014, produced by combining the shortwave infrared, near infrared, and visible wavelength data. This color combination enhances the visualization of vegetation, exposed rocks, and snow (light blue). This is a rare, partly cloudy satellite image and some of the volcanic features are indicated. The image does not show evidence of increased surface temperatures in response to the increased number of volcanic earthquakes that began in early June 2014. For information about Ladsat8 see the website: http://landsat.usgs.gov/index.php.

Volcano Watch: Five restless and erupting Alaska volcanoes keep scientists busy in June

Do you want to know which volcanoes in the U.S. are erupting or may be about to erupt? You can find answers on the U.S. Geological Survey’s Volcano Hazards Program website.

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Aug 29, 2014 / 5:15 pm

 

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