Eruptions continue at Kilauea Volcano’s summit and East Rift Zone. The summit lava lake remains relatively high, its level fluctuating slightly with changes in summit pressure. At Pu’u ‘O’o, only the lava flow advancing southeast appears to be active. The June 27th lava flow may have stopped. No Pu’u ‘O’o lava flows currently pose a threat to nearby communities.
Deflationary tilt started last night and continues this morning, following a classic DI event pattern. However, the broader trend recorded by summit tiltmeters over the past few weeks has been one of gradual inflationary tilt. The level of the summit lava lake remains relatively high, though is has fallen slightly with the deflation. Rates of seismicity are at background levels, with episodes of tremor associated with changes in the vigor of spattering within the Overlook vent. Sulfur dioxide emissions from the summit vent ranged from 4,200 to 4,700 metric tons/day when measurements were last possible during good trade wind conditions. Data from GPS networks and InSAR (satellite radar) show continued long-term inflation of the summit and upper Southwest Rift Zone magma reservoirs.
Pu’u ‘O’o Observations:
A webcam on Pu’u ‘O’o showed continued slow subsidence of the crater floor, which is consistent with the very gradual deflationary tilt recorded by the Pu’u ‘O’o tiltmeter. Seismicity is at background levels, and the sulfur dioxide emission rate from all East Rift Zone vents was about 410 metric tons/day when last measurable on June 1.
Lava Flow Observations:
An HVO overflight yesterday found no active surface lava on the June 27th flow field north of the East Rift Zone, though some small breakouts may have been overlooked. HVO scientists will continue to watch this area over the coming days – the more time that passes without active lava in this part of the flow field, the more likely it is that the supply of fresh lava to the June 27th flow has ceased. Only the p?hoehoe lava flow that emerged from the east flank of Pu’u ‘O’o on May 24 was active yesterday, and it continues to advance southeast. The flow was 2.7 km (1.7 mi) long yesterday afternoon, meaning it has made it roughly half way to the top of Pulama pali. An HVO webcam has been deployed to monitor the flow (Mobile Cam 3, on HVO’s website).
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June 10 , 2016. Kilauea , Hawai :
19°25’16” N 155°17’13” W,
Summit Elevation 4091 ft (1247 m)
Current Volcano Alert Level: WATCH
Current Aviation Color Code: ORANGE
Source : HVO.
Photo : Bruce Omori