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| Hawaii's Kilauea eruption could last for years, geologists warn | Hawaii's Kilauea eruption could last for years, geologists warn |
| (25 days later) | |
| The eruption of Kilauea volcano in Hawaii could last for months or even years, and threaten new communities on the Big Island, according to a report by US government geologists. | The eruption of Kilauea volcano in Hawaii could last for months or even years, and threaten new communities on the Big Island, according to a report by US government geologists. |
| 'The entire habitat is gone': Hawaii's natural wonders claimed by lava | 'The entire habitat is gone': Hawaii's natural wonders claimed by lava |
| At least 712 homes have already been destroyed and thousands of residents forced to evacuate since Kilauea began erupting on 3 May. | At least 712 homes have already been destroyed and thousands of residents forced to evacuate since Kilauea began erupting on 3 May. |
| But more areas could be at risk if the direction of a lava flow changes, the report by the Hawaiian Volcano Observatory said. | But more areas could be at risk if the direction of a lava flow changes, the report by the Hawaiian Volcano Observatory said. |
| A higher volume of molten rock is flowing underground from Kilauea’s summit lava reservoir than in previous eruptions, with supply to a single giant crack – known as fissure 8 – showing no sign of waning, according to the study published last week. | A higher volume of molten rock is flowing underground from Kilauea’s summit lava reservoir than in previous eruptions, with supply to a single giant crack – known as fissure 8 – showing no sign of waning, according to the study published last week. |
| “If the ongoing eruption maintains its current style of activity at a high eruption rate, then it may take months to a year or two to wind down,” said the report, which was designed to help authorities on the Big Island deal with potential risks from the volcano. | “If the ongoing eruption maintains its current style of activity at a high eruption rate, then it may take months to a year or two to wind down,” said the report, which was designed to help authorities on the Big Island deal with potential risks from the volcano. |
| Lava is bursting from same area about 40km (25 miles) down Kilauea’s eastern side as it did in eruptions of 1840, 1955 and 1960, the report said. The longest of those eruptions was in 1955. It lasted 88 days, separated by pauses in activity. | Lava is bursting from same area about 40km (25 miles) down Kilauea’s eastern side as it did in eruptions of 1840, 1955 and 1960, the report said. The longest of those eruptions was in 1955. It lasted 88 days, separated by pauses in activity. |
| The current eruption could become the longest in the volcano’s recorded history, it added. | The current eruption could become the longest in the volcano’s recorded history, it added. |
| Geologists believe previous eruptions may have stopped as underground lava pressure dropped due to multiple fissures opening up in Kilauea’s lower east rift zone, the report said. | Geologists believe previous eruptions may have stopped as underground lava pressure dropped due to multiple fissures opening up in Kilauea’s lower east rift zone, the report said. |
| The current eruption has coalesced around a single fissure, allowing lava pressure to remain high. | The current eruption has coalesced around a single fissure, allowing lava pressure to remain high. |
| A 400m (1,300ft) lava river now flows to the ocean from this “source cone” through an elevated channel about 16 to 22m above ground. | A 400m (1,300ft) lava river now flows to the ocean from this “source cone” through an elevated channel about 16 to 22m above ground. |
| “The main hazard from the source cone and the channel system is a failure of the cone or channel walls, or blockage of the channel where it divides in narrower braids. Either could divert most, if not all, of the lava to a new course depending on where the breach occurs,” the report said. | “The main hazard from the source cone and the channel system is a failure of the cone or channel walls, or blockage of the channel where it divides in narrower braids. Either could divert most, if not all, of the lava to a new course depending on where the breach occurs,” the report said. |
| The report said it only considered risks from a change in lava flow direction to communities to the north of the channel as residents there have not been evacuated, whereas residents to the south have already left their homes. | The report said it only considered risks from a change in lava flow direction to communities to the north of the channel as residents there have not been evacuated, whereas residents to the south have already left their homes. |
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