全球大地热流研究进展

Global heat flow:An overview over past 20 years

大地热流是表征地球热状态的重要地球物理参数,它记录了发生在地球深部各种作用过程和能量平衡的信息。大地热流的测量与汇编是固体地球物理学领域的基础性工作。本文对最近20年来全球大地热流研究的相关进展进行了综述,包括介绍近年来全球大地热流数据库建立和汇编情况,据此阐述了全球大地热流的分布规律及主控因素。继而重点对大陆和大洋热流研究中的若干重要概念或关键问题(如热流省、热流一生热率关系、壳幔热流配分系数、大洋岩石圈热演化模型和地下水循环等)、全球热量收支及其时空变化等方面进行了分析。最后,就全球热流汇编研究中需注意的问题以及今后的研究方向做了一些讨论。

Surface heat flow is one key geophysical parameter to represent the thermal regime of the Earth, and records the information of various deep Earth processes and energy balance. Measurement and compilation of global heat flow is a fundamental work in solid geophysics. In this article, we reviewed the major advancement of global heat flow related studies over past 20 years, including the introduction of global heat flow database and compilation, and showing heat flow pattern and interpretation. More important, some key concepts or issues in continental and oceanic heat flow studies （for instance, heat flow province, partitioning coefficient of crustal and mantle heat flow, thermal model of oceanic lithosphere and hydrothermal circulation, etc.） and global heat budget and its tempo-spatial variation are all presented here in detail. Finally, some problems concerning heat flow compilation and utilization are discussed, along with some possible research topics in future.