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1848 Marlborough earthquake : ウィキペディア英語版 | 1848 Marlborough earthquake
The 1848 Marlborough earthquake is the name associated with a severe earthquake which occurred at 1:40 a.m. on 16 October 1848 and whose epicenter was in the Marlborough region of the South Island of New Zealand. In Wellington the shaking lasted for about two minutes and caused widespread damage, especially to brick- or stone- built structures. Most of the buildings damaged in the earthquake were rebuilt in wood and this contributed to the relatively low level of damage and loss of life in the more powerful Wairarapa earthquake that hit Wellington seven years later. ==Tectonic setting==
New Zealand lies along the boundary between the Australian and Pacific Plates. In the South Island most of the relative displacement between these plates is taken up along a single dextral (right lateral) strike-slip fault with a major reverse component, the Alpine Fault. In the North Island, the displacement is mainly taken up along the Kermadec subduction zone, although the remaining dextral strike-slip component of the relative plate motion is accommodated by the North Island Fault System (NIFS).〔(Mouslopoulou,V., Nicol,A., Little, T.A. & Walsh, J.J. 2007. Terminations of large strike-slip faults: an alternative model from New Zealand. In: Cunningham, W. D. & Mann, P (eds).Tectonics of Strike-Slip Restraining and Releasing Bends. Geological Society of London, Special Publication, 290; p. 387–415. )〕 A group of dextral strike-slip structures, known as the Marlborough Fault System, transfer displacement between the mainly transform and convergent type plate boundaries in a complex zone at the northern end of South Island.〔(Van Dissen, R. & Yeats, R.S. 1991. Hope Fault, Jordan Thrust, and uplift of the Seaward Kaikoura Range, New Zealand. Geology, 19, 393–396 ).〕 The earthquake occurred on the Awatere Fault which is part of the Marlborough Fault System.〔(Grapes, R., Little, T. & Downes, G. 1998. Rupturing of the Awatere Fault during the 1848 October 16 Marlborough earthquake, New Zealand: historical and present day evidence, New Zealand Journal of Geology & Geophysics, 1998, Vol. 41: 387–399 )〕
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