Tag Archive | "kilauea"

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Volcano Watch: Kilauea activity update for November 15, 2018

Kīlauea is not erupting. Low rates of seismicity, deformation, and gas release have not changed significantly over the past week.

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Panorama of the Kīlauea Caldera Wide Angle from HVO Observation Tower. November 7, 2018. Images courtesy of USGS/HVO

Volcano Watch: Kilauea activity update for November 8, 2018

Kīlauea is not erupting. Low rates of seismicity, deformation, and gas release have not changed significantly over the past week.

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Kīlauea Volcano's summit, as viewed from the southwest, shows the collapsed area of Halema‘uma‘u and the adjacent caldera floor. A section of Crater Rim Drive preserved on a down-dropped block is visible at the far right. Volcanic gases rising from magma stored beneath the summit continue to escape to the surface, as they have for as long as Kīlauea has existed, resulting in deposits of sulfur on the crater walls.

Volcano Watch: Kilauea activity update for November 1, 2018

A slight inflationary trend near and east of Puʻu ʻŌʻō suggests that magma may be refilling the middle East Rift Zone. Low seismicity and reduced gas emissions do not indicate that the magma is shallow, but HVO continues to closely monitor this area and will report any significant changes.

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Volcano Watch: Kilauea activity update for October 25, 2018

A slight inflationary trend near and east of Puʻu ʻŌʻō suggests that magma may be refilling the middle East Rift Zone. Low seismicity and reduced gas emissions do not indicate that the magma is shallow, but HVO continues to closely monitor this area and will report any significant changes.

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Low sulfur dioxide gas emissions on Kīlauea have resulted in greatly diminished vog (volcanic air pollution) in Hawaii, giving rise to spectacular views on the island. Here, looking across the field of lava erupted from Kīlauea's lower East Rift Zone this past summer, the shield-shaped profiles of Mauna Loa (left) and Mauna Kea (right) can be clearly seen in the far distance. Photo taken Wednesday, October 10, 2018 courtesy of U.S. Geological Survey

Volcano Watch: Kilauea activity update for October 18, 2018

Kīlauea is not erupting. Summit and East Rift Zone activity are greatly reduced, with low rates of seismicity, deformation, and gas emissions recorded this past week.

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Fissure 8 Cone on October 10, 2018. USGS/HVO image.

Volcano Watch: Kilauea activity update for October 11, 2018

Kīlauea activity is greatly reduced, with low rates of seismicity, deformation, and gas emissions recorded this past week, and no active lava at the surface of the volcano since September 5.

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Webcam image of Kilauea Caldera from Hawaiian Volcano Observatory. Image courtesy of USGS/HVO

USGS lowers volcano alert level from WATCH to ADVISORY level

Accordingly, HVO is lowering the Volcano Alert Level for ground-based hazards from WATCH to ADVISORY. This means volcanic activity has decreased significantly but continues to be closely monitored for renewed activity. The Aviation Color Code is also being lowered from ORANGE to YELLOW.

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This comparison shows the area of Kapoho before and after. Kapoho Crater is in the left portion of the image. Lava filled much of the crater, including the small nested crater that contained Green Lake. The Kapoho Beach Lots subdivision is in the right side of the image, north of Kapoho Bay, and was completely covered by the fissure 8 lava flow. Vacationland Hawai‘i, in the lower right corner of the image, was also completely covered, along with the adjacent tide pools. Kapoho Farm Lots, near the center of the image, is also beneath the flow. For a map of the 2018 lower East Rift Zone eruption fissures and surrounding area, see the HVO web site

Volcano Watch: Kilauea activity update for October 4, 2018

Active lava has not been seen within the fissure 8 cone since September 5, and the high rates of seismicity and deflationary deformation at the summit stopped abruptly on August 4.

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Fissure 8 cone. September 27, 2018.

Volcano Watch: Kilauea activity update for September 27, 2018

At Kīlauea’s lower East Rift Zone, the most recent significant incandescence visible within the fissure 8 cone was on September 15. At the summit of the volcano, seismicity and ground deformation remain low.

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South side of Halemaʻumaʻu at the summit of Kīlauea Volcano, showing a short section of Hawaiʻi Volcanoes National Park’s Crater Rim Drive (arrow) preserved on a block of the former caldera floor that has dropped down about 80 m (260 ft). Thinly bedded Kīlauea explosion deposits (E) from 16th-18th centuries are overlain by 19th and 20th century lava flows in the wall of Halemaʻumaʻu. USGS photo by D. Swanson.

Volcano Watch: Will this summer’s limited collapse of Kīlauea caldera eventually widen?

Putting together the evidence for such events is complicated, time-consuming, field-oriented research, but it paid dividends at Kīlauea by recognizing the large-scale cyclic behavior of the volcano during the past 2,500 years.

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Volcano Watch: Kilauea activity update for September 20, 2018

The combined sulfur dioxide emission rates at Kīlauea’s summit, Puʻu ʻŌʻō, and lower East Rift Zone remain at less than 1,000 tonnes per day—lower than at any time since late 2007.

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Volcano Watch: Kilauea activity update for September 13, 2018

Since the beginning of September, small lava flows have been observed within the fissure 8 cone, but none have extended outside the walls of the cone.

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Volcano Watch: Kilauea activity update for September 6, 2018

At Kīlauea’s lower East Rift Zone, lava intermittently erupted within the fissure 8 cone, but no lava flowed beyond the spillway. Residents in the lower Puna and Kīlauea summit areas should stay informed and heed Hawaii County Civil Defense alerts.

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Volcano Watch: Kilauea activity update for August 30, 2018

At Kīlauea’s lower East Rift Zone, no incandescence was visible in the fissure 8 cone and no lava was entering the ocean as of August 30, 2018.

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