Tag Archive | "hvo"

Public can vote for Hawaiian Volcano Observatory to win award

Beginning Friday, May 10, members of the public can vote online (websites listed below) for the “People’s Choice Award” to honor the federal employee/team they believe has made the most significant contribution to the American people. Voting ends on July 8. The People’s Choice winner will be announced at a Partnership for Public Service event […]

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Ash rises above Halemaʻumaʻu within Kīlauea’s summit caldera in this May 27, 2018, telephoto image from near Volcano House Hotel in Hawaiʻi Volcanoes National Park. By the time Kīlauea’s summit collapse events ended on August 2, Halema‘uma‘u was 2.5 km (1.5 mi) wide and 500 m (1600 ft) deep; prior to the 2018 collapses, it was about 1 km (0.5 mi) wide and 85 m (about 280 ft) deep. A segment of a long-closed Park trail is visible winding across the caldera floor (lower left). USGS photo by K. Anderson.  

Volcano Watch: New insights gained from Kīlauea Volcano’s 2018 summit collapses

A year ago, USGS Hawaiian Volcano Observatory scientists and Island of Hawaiʻi residents were in the throes of an historically unprecedented series of events for Kīlauea.

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Scientists use a laser diffraction particle size analyzer to examine fine ash from the 2018 Kīlauea summit explosions. The research examines fine ash (grains 1 mm to 1 micrometer) and investigates the processes of eruption, fragmentation, and respiratory health hazards (PM10, PM2.5). USGS image by A. Van Eaton

Volcano Watch: Kilauea activity update for May 9, 2019

Scientists use a laser diffraction particle size analyzer to examine fine ash from the 2018 Kīlauea summit explosions.

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The start of fissure 3 during Kīlauea’s lower East Rift Zone eruption. Lava erupting to the surface cut across Kaupili Street around 7:00 a.m. on May 4, 2018. USGS photo by M. Patrick.

Volcano Watch: HVO geologists recall their first day of the 2018 lower East Rift Zone eruption 

With the one-year anniversary of the Lower East Rift Zone eruption, USGS Hawaiian Volcano Observatory staff, are reflecting on this historic event.

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A small collapse of the Pu‘u ‘Ō‘ō crater at 6:14 a.m. HST today (May 1, 2019) was the last 'hurrah' for a GPS instrument located on the crater's edge (red circle). This station, designated PUOC, served faithfully throughout Kīlauea's 2018 eruption and was an important source of information on the shallow magma system of Pu‘u ‘Ō‘ō. The station's last reported position showed it moving rapidly to the southeast, consistent with motion into the crater (inset shows data transmissions from April 11 through this morning). Monitoring of Pu‘u ‘Ō‘ō is currently being accomplished by additional GPS and tilt stations farther from the edge of the crater. The larger equipment installation near the solar panels was not affected by this morning's collapse and continues to function. However, contingency plans are in place in case collapses of the crater edge continue. USGS photo by I. Johanson on March 18, 2019, annotated on May 1, 2019.

Volcano Watch: Kilauea activity update for May 2, 2019

Kῑlauea Volcano is not erupting and its USGS Volcano Alert level remains at NORMAL.

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Volcano Watch: Kilauea activity update for April 25, 2019

Kῑlauea Volcano is not erupting and its USGS Volcano Alert level remains at NORMAL.

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This image is from a temporary monitoring camera on the west rim of Kilauea Caldera. The camera is looking E towards the bottom of the newly enlarged Halemaʻumaʻu crater, although the deepest part of the crater is not visible from this vantage point. The crater from left to right (roughly NNE to SSW) is approximately 1 km (0.6 mi) across. The depth of the crater in the visible image from the rim is several hundred meters.

Volcano Watch: Kilauea activity update for April 18, 2019

Kῑlauea Volcano is not erupting and its USGS Volcano Alert level remains at NORMAL.

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Location of the 5.3 magnitude earthquake at 5:09 p.m. HST, Saturday, April 13, 2019.

Hawaiian Volcano Observatory records 5.3M quake and aftershocks in Kona Saturday (April 13)

Three aftershocks were recorded within an hour of the earthquake, including a magnitude-3.0 event approximately 11 minutes following the mainshock. Additional aftershocks are expected.

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A high-precision GPS unit (on white “T” in foreground) records its position at a ground control point along Pohoiki Road. This marker was painted in July 2018 and is visible in numerous aerial photographs taken by Hawaiian Volcano Observatory geologists throughout Kīlauea’s lower East Rift Zone eruption last summer. GPS data are recorded over a period of four minutes at each location, enabling vertical precision of approximately 18 cm (7 in). USGS photo by M. Zoeller, 03/22/2019.

Volcano Watch: Recent ground control survey helps finalize USGS lava thickness map

Some lava thicknesses on the preliminary map were slightly overestimated, while others were underestimated.

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A closer view of a gravity reading at a station located in the south part of Kīlauea caldera. When repeated over time, gravity measurements can detect changes in subsurface mass that might not be detectable by other monitoring methods. Scientists track this data because the changes could be related to magma movement within the volcano. USGS photo by M. Poland, 03/20/2019.

Volcano Watch: Kilauea activity update for April 4, 2019

Rates of seismicity, deformation, and gas release have not changed significantly over the past week.

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Senator Mazie K. Hirono questions Interior Secretary Nominee David Bernhardt about the future home of Hawaiian Volcano Observatory.

Senator Hirono questions decision to relocate Hawaiian Volcano Observatory to Oahu

Moving Hawaiian Volcano Observatory to Oahu “Doesn’t Seem to Make a Lot of Sense”

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This image is from a temporary monitoring camera on the west rim of Kilauea Caldera. The camera is looking East towards the bottom of the newly enlarged Halemaʻumaʻu crater, although the deepest part of the crater is not visible from this vantage point. The crater from left to right (roughly NNE to SSW) is approximately 1 km (0.6 mi) across. The depth of the crater in the visible image from the rim is several hundred meters. Image courtesy of USGS/HVO Webcam

Volcano Watch: Kilauea activity update for March 28, 2019

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

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This aerial view of the western part of Kīlauea Volcano’s caldera was taken on August 6, 2018. The down-dropped block is faulted about 120 m (400 feet) below the caldera floor. Many 19th-century lava flows are exposed in the fault scarps. Halema‘uma‘u (not visible) is to the left of this photo. USGS photo by D.Swanson.

Volcano Watch: New outcrops make good geology

As Halemaʻumaʻu sank and widened, its crater wall began to expose lava flows that formed during earlier eruptions and were covered by later flows.

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After magma drained from Pu‘u ‘Ō‘ō on April 30, 2018, the crater was roughly 356 m (1168 ft) deep, with the upper part of the crater flared and the deeper part a narrower cylindrical shaft. Collapses on the crater walls have since enlarged sections of the crater and filled the deepest part with rockfall debris, creating a much different crater geometry—as shown in this comparison of models from May 11, 2018, and March 18, 2019. Today, the deepest portion of the crater is 286 m (938 ft).

Volcano Watch: Kilauea activity update for March 22, 2019

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

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