Wild Land

Cooling of the hydrothermal system at Mt. Ruapehu indicates that the recent period of unrest is drawing to a close. Crater lake temperatures have fallen, gas emission are reduced and volcanic tremor has declined.

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Increased gas output and continued high lake temperatures at Mt. Ruapehu show that the volcano has continued to be active since its last eruption.

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White Island volcano has not reacted significantly to Friday’s nearby earthquake, and activity noted since is thought to be normal behaviour for the volcano.

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GeoNet has changed its volcano webcam and drum page, allowing it to extend coverage to another eight locations regularly monitored by New Zealand’s vulcanologists.

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Tuesday May 13, 2008: GNS Science issued an alert bulletin for Mount Ruapehu this morning.

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GNS Science issued an alert bulletin for Ruapehu volcano yesterday, the 23rd of April 2008, reporting increased activity.

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Shallow earthquake activity on the northern flank of Ngauruhoe volcano, which began in May 2006, has increased.

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Dozens of small-to-moderate sized earthquakes which have struck near White Island volcano since late November seem to have caused only minor changes to the hydrothermal system on the island.

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A burst of earthquake activity near White Island has prompted Geonet to issue an alert bulletin for the volcano.

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GNS Science downgraded the alert status for Mt. Ruapehu yesterday, following the absence of eruptive activity since September 25th.

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Mt. Ruapehu in the central North Island erupted at 8:23 p.m. on Tuesday September 25th 2007. Within a few hours, activity associated with the earthquake swarm near Matata in the Bay of Plenty increased.

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The largest island in the Hawaii chain, Hawaii (known to locals as The Big island), has experienced an earthquake swarm this morning.

The 65 quakes reported by the US Geological Survey are occurring at shallow depths on the south-eastern flank of one of the planet’s most active volcanoes – Kilauea volcano.

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The level of the crater lake at White Island volcano has dropped rapidly during March and April. At the beginning of March 2007, the lake was 9 metres below overflow, but this has rapidly declined by 19 metres.

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Volcanic earthquake activity at Mt. Ruapehu has increased since Sunday’s lahar, indicating that there may be a consequent increase in activity within the crater lake over the next few days to weeks.

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Yesterday’s lahar on Mt Ruapehu has been described as bigger than the lahar that followed Ruapehu’s 1995 eruption but smaller than the destructive Tangiwai lahar of 1953 that claimed 151 lives.

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