The Ruapehu lahar emergency response plan development process : an analysis
Identifies and discusses important issues influencing effective emergency response planning for a lahar produced by the collapse of a tephra barrier (layer) deposited at the Mt Ruapehu Crater Lake outlet by the 1995-96 eruptions. Considers issues of coordination (due to the large number of agencies...
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| Published in | Australasian journal of disaster and trauma studies Vol. 2004; no. 1 |
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| Main Author | |
| Format | Journal Article |
| Language | English |
| Published |
2004
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| Subjects | |
| Online Access | Get full text |
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| Abstract | Identifies and discusses important issues influencing effective emergency response planning for a lahar produced by the collapse of a tephra barrier (layer) deposited at the Mt Ruapehu Crater Lake outlet by the 1995-96 eruptions. Considers issues of coordination (due to the large number of agencies involved), communication and information management, and training. Source: National Library of New Zealand Te Puna Matauranga o Aotearoa, licensed by the Department of Internal Affairs for re-use under the Creative Commons Attribution 3.0 New Zealand Licence. |
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| AbstractList | Identifies and discusses important issues influencing effective emergency response planning for a lahar produced by the collapse of a tephra barrier (layer) deposited at the Mt Ruapehu Crater Lake outlet by the 1995-96 eruptions. Considers issues of coordination (due to the large number of agencies involved), communication and information management, and training. Source: National Library of New Zealand Te Puna Matauranga o Aotearoa, licensed by the Department of Internal Affairs for re-use under the Creative Commons Attribution 3.0 New Zealand Licence. Achieving a high state of emergency response preparedness is imperative as the breach of the barrier restraining Crater Lake, Mt Ruapehu, New Zealand draws near. A number of key planning issues are identified here that will influence the effectiveness of the Emergency Response Plans (ERPs) currently at various stages of completion for the agencies that must respond to this event. A Southern Response Lahar Planning Group of organisations with statutory response obligations has been convened to facilitate a unified response. The tephra barrier formed during the 1995-96 eruptions at Ruapehu, and the lake has been gradually filling since (it was emptied during the eruptions). If the barrier breaches catastrophically it will send a lahar (dense volcanic-ash-saturated flash flood) down the Whangaehu river posing a hazard to life which is particularly high at several points down stream. A similar lahar in 1953 damaged the rail bridge at Tangiwai and lead to the deaths of 151 train passengers. The Eastern Ruapehu Lahar Warning System (ERLAWS) utilises three separate lahar sensors high on the mountain to automatically trigger lights and gates at the key road bridge and rail bridge at Tangiwai, to give warning and activate response agencies' response plans. The emergency response involves a set of over a dozen agencies each with distinct but interrelated responsibilities in the event. Once the alarm is triggered it has been calculated that the lahar will reach the Tangiwai road and rail bridges within approximately 90 minutes. This event is somewhat unique because (a) it has a relatively short window of probable occurrence, a matter of months, once the lake rises above the base of the tephra dam, and (b) once the alarm is triggered the core response agencies have a particularly short period of time (< 90 minutes) in which they must respond at Tangiwai (the time is shorter on the Desert Road and the mountain itself). |
| Author | Galley, Ian |
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| Snippet | Identifies and discusses important issues influencing effective emergency response planning for a lahar produced by the collapse of a tephra barrier (layer)... Achieving a high state of emergency response preparedness is imperative as the breach of the barrier restraining Crater Lake, Mt Ruapehu, New Zealand draws... |
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| Title | The Ruapehu lahar emergency response plan development process : an analysis |
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