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Kilauea volcan
Shield volcano 1277 m (4,190 ft)
Hawai'i, 19.41°N / -155.29°W
Condition actuelle: normal / en sommeil (1 sur 5)
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Eruptions du volcan Kilauea:
Near-continuous eruptions. Since 1960: 1961 (4x), 1962, 1963 (2x), 1965 (2x), 1967-68, 1968 (2x), 1969, 1969-74, 1971 (2x), 1973 (2x), 1974 (3x), 1975, 1977, 1979, 1980, 1982 (2x), 1983-2008 (ongoing)
Style éruptif tipique:
Dominant effusive depuis 1790, mais ~ de 60% au cours des derniers explosive ~ 2500 ans.
Derniers séismes proches
Voyages au volcan Kilauea
Hawaii - Birthplace of Islands (14 days walking and study tour to Oahu, Kauai, Maui, Hawai'i)
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Volcan Kilauea assis par la NASA (C)

 

Nouvelles du volcan Kilauea

Kilauea volcano update: Eruption continues with no signs of ending soon

Tuesday Jul 24, 2018 06:28 AM | AUTEUR : T

The fissure 8 channel continues to carry lava toward the coast on the west side of Kapoho Crater (vegetated cone, far left). Northwest of this cone, overflows (lower left) of the channel occurred overnight, but lava was confined to the existing flow field and did not threaten any homes or structures. (image 23 July: HVO / USGS)
The fissure 8 channel continues to carry lava toward the coast on the west side of Kapoho Crater (vegetated cone, far left). Northwest of this cone, overflows (lower left) of the channel occurred overnight, but lava was confined to the existing flow field and did not threaten any homes or structures. (image 23 July: HVO / USGS)
HVO's most recent lava flow map
HVO's most recent lava flow map
Collapse of Kīlauea's caldera floor has exposed South Sulphur Bank, prominent in the mid-19th century but covered as lava flows filled the caldera. The flat top of the white deposit shows how high the caldera fill reached. As the caldera floor dropped in mid-June 2018, South Sulphur Bank was again exposed. The height of the bank, now more than 65 m (213 ft), increases about 2.5 m (9 ft) with each collapse event at Kīlauea's summit. On the caldera floor, white patches lie along spatter ramparts formed in 1971 and 1974. (image 22 July: HVO / USGS)
Collapse of Kīlauea's caldera floor has exposed South Sulphur Bank, prominent in the mid-19th century but covered as lava flows filled the caldera. The flat top of the white deposit shows how high the caldera fill reached. As the caldera floor dropped in mid-June 2018, South Sulphur Bank was again exposed. The height of the bank, now more than 65 m (213 ft), increases about 2.5 m (9 ft) with each collapse event at Kīlauea's summit. On the caldera floor, white patches lie along spatter ramparts formed in 1971 and 1974. (image 22 July: HVO / USGS)
During the past weeks, the lower east rift zone eruption has been continuing without really significant changes: around the main vent (fissure #8), a large cinder has been built by the continuous fountaining during the first weeks), and magma erupted from there has been flowing through a now well-established perched wide channel towards the new ocean entry at Kaphoho, where new land is being formed.
Overflows from this channel and resulting secondary lava flows so far have been minor, and mostly confined to the existing lava flow field and not damaging any new homes.
As of yesterday, "the most vigorous ocean entry was located a few hundred meters northeast of the southern flow margin with a few tiny pahoehoe toes entering the ocean from the Kapoho Bay lobe to the north. The southern margin of the flow remains about 500 m (0.3 mi) from the boat ramp at Isaac Hale Park; however, a new lobe has started from the southern lobe and is active along its southwestern margin slowly heading toward the ocean." (HVO)
Occasional minor lava emission had also been observed from other fissures up to about 2 weeks ago last time.
The summit caldera continues to undergo subsidence, characterized by a remarkably stable pattern of gradual build-up of seismic activity released in a magnitude 5+ quake at roughly 12 hours intervals, and resulting additional collapse of the crater floor and adjacent areas.
Actualités précédentes
Sunday, Jul 01, 2018
Volcanic Ash Advisory Center Washington (VAAC) issued the following report: ... [details]
This aerial image taken on Sunday morning 24 June 2018, shows the  section of the channelized flow below Kapoho crater where the lava is ponding  and overflowing at its edges, sending lava laterally. (Bruce Omori, Extreme Exposure Fine Art Gallery)
Friday, Jun 29, 2018
Kilauea’s LERZ eruption continues in much the same way as it has since lava flows from fissure 8 reached the ocean at Kapoho at the start of June. The cinder cone constructed through lava spattering around fissure 8 is by now 55 m (180 ft) tall at its highest point, mostly hiding the lava fountains which only occasionally rise above it. HVO/USGS estimates that the rate at which lava effuses from fissure 8 is approximately 100 cubic meters per second. The well established 8-mile channel through which this lava is quickly transported to the ocean shows intermittent, short-lived overflows which rarely extend beyond the existing flow field. ... [details]
Lava continues to erupt at a high rate from Fissure 8 and flow within the well established channel to the ocean south of Kapoho. (HVO/USGS)
Saturday, Jun 23, 2018
The fissure eruption at Kilauea’s Lower East Rift Zone continued without any change throughout the past week. Activity remains focused on Fissure 8 where lava is still erupting at a high rate and then flows within the well established channel to the ocean. Fissures 6, 16/18 and 22 have been intermittently active, showing incandescence and/or lava spattering that at times created small flows. ... [details]
Saturday, Jun 23, 2018
Volcanic Ash Advisory Center Washington (VAAC) issued the following report: ... [details]
This image was captured during the helicopter overflight on June 18, 2018. It shows the growing Halema‘uma‘u crater viewed to the southeast, with HVO and Jagger Museum sitting on the caldera rim to give a better scale of the ongoing subsidence at the summit. (HVO/USGS)
Friday, Jun 22, 2018
Kilauea’s summit continues to steadily subside in response to the large volume of magma that was drained from beneath the caldera towards the lower East Rift Zone early May. This process is most pronounced around Halema’uma’u crater whose walls are falling in on itself and by now has grown to nearly twice its original width and depth – having partially swallowed the old overlook parking lot. What was once a 12-acre (0,05 square km) lava lake in the middle of the crater has grown to more than 130 acres (0.526 square km), at places up to 300 m (1000 ft) deep, and is getting larger every single day. A preliminary estimate of summit volume loss is around 260 million cubic meters as of June 15th, 2018. ... [details]

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