论文标题
早期太阳系中冰冷的Kuiper带对物体的热演化中的蛇丁化
Serpentinization in the thermal evolution of icy Kuiper belt objects in the early Solar system
论文作者
论文摘要
在这里，我们提出了一种改进的算法，以模拟早期太阳系中行星的蛇形化过程。尽管假设类似蛇形化的反应在行星的热演化中起着重要作用，但是在此主题中很少有模型和受限模型。这些过程可能很重要，因为这些对象中所涉及的材料很丰富。我们的模型基于（Gobi＆Kereszturi 2017）的模型，并且包含了对热容量和岩石圈压力的考虑以及界面水量的计算。我们的结果与以前的计算的比较表明，例如蛇形时间 - 在特定初始条件下消耗大多数反应物所需的时间 - 或该过程产生的热量。在一个简单的应用中，我们表明，在冰冷的身体下，在某些现实条件下，在水冰的熔点下方，使用界面水的蛇形化反应可能能够进行，并最终将局部温度推到熔点上方，以开始“失控”蛇形化。根据我们的计算，在Radii R $ \ Gtrsim $ 200 km蛇底性化的对象中，可能很快就将这些尸体在早期太阳系中几乎整个内部进行了改革。
Here we present an improved algorithm to model the serpentinization process in planetesimals in the early Solar system. Although it is hypothesized that serpentinization-like reactions played an important role in the thermal evolution of planetesimals, few and restricted models are available in this topic. These processes may be important as the materials involved were abundant in these objects. Our model is based on the model by (Gobi & Kereszturi 2017), and contains improvements in the consideration of heat capacities and lithospheric pressure, and in the calculation of the amount of interfacial water. Comparison of our results with previous calculations shows that there are significant differences in the e.g. the serpentinization time -- the time necessary to consume most of the reactants at specific initial conditions -- or the amount of heat produced by this process. In a simple application we show that in icy bodies, under some realistic conditions, below the melting point of water ice, serpentinization reaction using interfacial water may be able to proceed and eventually push the local temperature above the melting point to start a 'runaway' serpentinization. According to our calculations in objects with radii R $\gtrsim$ 200 km serpentinization might have quickly reformed nearly the whole interior of these bodies in the early Solar system.
