Abstract Temperature exerts a first order control on rock strength, principally via thermally activated creep deformation and on the distribution at depth of the brittle-ductile transition zone. The latter can be regarded as the lower bound to the seismogenic zone, thereby controlling the spatial distribution of seismicity within a lithospheric plate. As such, models of the crustal thermal field are important to understand the localisation of seismicity. Here we relate results from 3D simulations of the steady state thermal field of the Alpine orogen and its forelands to the distribution of seismicity in this seismically active area of Central Europe. The model takes into account how the crustal heterogeneity of the region effects thermal properties and is validated with a dataset of wellbore temperatures. We find that the Adriatic crust appears more mafic, through its radiogenic heat values (1.30E-06 W/m3) and maximum temperature of seismicity (600 °C), than the European crust (1.3–2.6E-06 W/m3 and 450 °C). We also show that at depths of

中文翻译：

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横跨阿尔卑斯造山带及其前陆的 3D 热场及其与地震活动的关系

摘要 温度对岩石强度产生一级控制，主要是通过热激活蠕变变形和脆-韧过渡带深度分布。后者可以看作是发震带的下界，从而控制岩石圈板块内地震活动的空间分布。因此，地壳热场模型对于理解地震活动的定位很重要。在这里，我们将阿尔卑斯造山带及其前陆稳态热场的 3D 模拟结果与中欧地震活动区的地震活动分布联系起来。该模型考虑了该地区地壳非均质性如何影响热特性，并通过井筒温度数据集进行了验证。我们发现亚得里亚海地壳的辐射热值 (1.30E-06 W/m3) 和地震活动的最高温度 (600 °C) 比欧洲地壳 (1.3-2.6E-06 W/m3 和450°C）。我们还表明，在深度