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首页> 外文期刊>Journal of Volcanology and Geothermal Research2012V243-244NOCT,15 >Modelling of hydrothermal fluid flow and structural architecture in an extensional basin, Ngakuru Graben, Taupo Rift, New Zealand
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Modelling of hydrothermal fluid flow and structural architecture in an extensional basin, Ngakuru Graben, Taupo Rift, New Zealand

机译：延伸盆地的热液流体流动和结构构造模型，新西兰陶波纵谷Ngakuru Graben

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摘要

Present-day geothermal activity on the margins of the Ngakuru graben and evidence of fossil hydrothermal activity in the central graben suggest that a graben-wide system of permeable intersecting faults acts as the principal conduit for fluid flow to the surface. We have developed numerical models of fluid and heat flow in a regional-scale 2-D cross-section of the Ngakuru Graben. The models incorporate simplified representations of two 'end-member' fault architectures (one symmetric at depth, the other highly asymmetric) which are consistent with the surface locations and dips of the Ngakuru graben faults. The models are used to explore controls on buoyancy-driven convective fluid flow which could explain the differences between the past and present hydro thermal systems associated with these faults.
机译：如今，Ngakuru grab片边缘的地热活动和中央grab片中化石热液活动的证据表明，整个grab片状渗透性相交断层系统是流体流向地表的主要管道。我们已经开发了Ngakuru Graben区域区域二维横截面中的流体和热流的数值模型。这些模型结合了两种“末端构件”断层构造的简化表示（一种在深度上对称，另一种高度不对称），与Ngakuru en陷断层的表面位置和倾角一致。该模型用于探索对浮力驱动的对流流体流动的控制，这可以解释与这些断层有关的过去和现在的水热系统之间的差异。

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