大洋岩石圈形成的岩浆增生模型：对全球热损失的启示
A Magma Accretion Model for the Formation of Oceanic Lithosphere: Implications for Global Heat Loss
摘要：
本文提出了一个简单的大洋岩石圈岩浆增生模型，并探讨了它对理解大洋岩石圈热场的意义。新的模型（指定的ESTA）假设存在横向变化的岩浆增生速率和温度之间的岩石圈和软流圈的边界带。根据该模型计算的热流和水深变化大大改善了与各自观测数据集的拟合。改进后的拟合适用于整个年龄范围，而不需要援引稳定洋壳中大规模热液循环的特设假设。研究结果表明，全球热损失的估计需要缩小至少25%。
英文摘要：
A simple magma accretion model of the oceanic lithosphere is proposed and its implications for understanding the thermal field of oceanic lithosphere examined. The new model (designated VBA) assumes existence of lateral variations in magma accretion rates and temperatures at the boundary zone between the lithosphere and the asthenosphere. Heat flow and bathymetry variations calculated on the basis of the VBA model provide vastly improved fits to respective observational datasets. The improved fits have been achieved for the entire age range and without the need to invoke the ad-hoc hypothesis of large-scale hydrothermal circulation in stable ocean crust. The results suggest that estimates of global heat loss need to be downsized by at least 25%.
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