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首页> 外文会议>Geothermal Resources Council Annual Meeting >Three-Dimensional Seismic Images of the Larderello-Travale Geothermal Area-Italy from Microseismic Travel Time Data
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Three-Dimensional Seismic Images of the Larderello-Travale Geothermal Area-Italy from Microseismic Travel Time Data

机译：来自微震旅行时间数据的喇叭花曲线地热区域的三维地震图像 - 意大利

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摘要

Advanced seismological investigations such as a precise events location, a four-dimensional monitoring of the microseismic activity and an accurate study of moment tensors can be inherently supportive for the management of a geothermal field. However, since any of the above mentioned investigations requires accurate velocity models, a detailed knowledge of the three-dimensional P and S wave velocity structures can reveal crucial data both for the management of the field and for the further development of the geothermal source. Therefore, this study has been addressed to image the P- and S- velocity structures of the Larderello-Travale field by a three-dimensional microearthquakes tomographic inversion methodology. Due to the non-uniqueness of seismic velocities alone as indicators of variable rock properties, we also imaged the Vp/Vs and Vp~(*)Vs parameters of the Larderello-Travale field to emphasize variations in the subsurface of the physical rocks properties as fluid content and porosity, respectively. A comparison of these parameters with theoretical values deriving from effective porous medium modeling has been performed in order to interpret the results in terms of rock physics signatures.
机译：先进的地震性研究，例如精确的事件位置，对微震活动的四维监测以及对时刻张量的准确研究可以本质地支持地热场的管理。然而，由于上述研究中的任何一种研究需要准确的速度模型，所以三维P和S波速度结构的详细知识可以揭示用于管理领域的重要数据和地热源的进一步发展。因此，已经解决了该研究以通过三维微型断层倒置方法图像通过三维微曲面断层变换方法进行图像的P和S速度结构。由于单独的地震速度作为可变岩石属性的指标，我们还成像了易于摇滚字段的VP / VS和VP〜（*）参数，以强调物理岩石属性的地下的变化分别流体含量和孔隙率。已经进行了与从有效多孔介质建模中得出的理论值的这些参数的比较，以便在岩石物理签名方面解释结果。

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