Characteristics of three recent earthquake sequences in the Taupo Volcanic Zone, New Zealand

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• 作者：Tony Hurst ; Stephen Bannister ; Russell Robinson ; Bradley Scott
• 关键词：Seismology ; Taupo Volcanic Zone ; Swarms ; Fluid injection
• 刊名：Tectonophysics
• 出版年：2008
• 期刊代码：82_00401951
• 类别：ear
• 出版时间：2 June 2008
• 卷：452
• 期：1-4
• 页码：17-28
• 文件大小：1106 K

摘要

We have analysed three recent earthquake sequences in the northern part of the Taupo Volcanic Zone. A 1998 sequence at Haroharo with a largest event of M_L 4.8, and a 2004 sequence near Lake Rotoehu (largest event M_L 5.4), had normal b-values, and displayed an aftershock decay pattern, with most of the activity within the first few days. In contrast, a 2005 sequence a few tens of kilometres away at Matata (largest event M_L 4.1), had very different characteristics, with a slow development and decay, no tendency for enhanced seismicity after the larger events, and a very high b-value.