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2000 Nicaragua earthquake
The 2000 Nicaragua earthquake occurred at 19:30 UTC on July 6. It had a magnitude of 5.4 on the moment magnitude scale and caused 7 deaths and 42 injuries. 357 houses were destroyed and 1,130 others were damaged in the earthquake.
==Tectonic setting==
The Pacific coast of Nicaragua lies above the convergent plate boundary where the Cocos Plate is subducting beneath the Caribbean Plate, at a rate of 83 mm per year. The direction of convergence is significantly oblique to the plate boundary, leading to an element of left lateral strike-slip movement within the overriding plate. Unlike the obliquely convergent boundary in Sumatra, where the strike-slip element is accommodated by displacement along the trench parallel Great Sumatran fault, no major NW-SE trending fault structure is known in Nicaragua. The most commonly mapped faults are SW-NE trending left lateral in type. The focal mechanisms of earthquakes in this part of Nicaragua are consistent with both orientations of faulting, due to the ambiguity inherent in interpreting the active fault planes for strike-slip events. The SW-NE faulting is thought to represent so-called "bookshelf faulting", which accommodates the oblique movement along the plate boundary, combined with clockwise rotation of the intervening blocks.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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