摘要
火山活动主要受地球内部能量间歇性释放所控制。对作差异旋转的内核而言,银河年周期可以改变太阳辐射量和太阳系速度,影响核幔的角动量交换和壳幔能量交换,造成热幔柱喷发和岩浆活动,控制了核幔边界到地表的能量交换过程。地球减速运动将释放出巨大能量。这是天文周期与火山旋回一一对应的原因。通过天文周期可预测未来火山活动。
Volcanism is controlled by the intermittent release of energy in the Earth. As concerns the differential rotation of the Earth's inner core, The Galactic Year may change the solar radiative quantity and the solar system's speed and affect the exchange of core—mantle angular momentum and crust—mantle energy,which leads to eruptions of superplumes and magma,and controls the energy exchange from CMB to crust. When the earth's speed decreases, it will release a huge amount of energy. They are the reason for the correspondence of the volcanic cycles one by one with the astronomical periods one by one. According to the astronomical periods, volcanic eruptions may possibly be predicted in the future.
出处
《地质论评》
CAS
CSCD
北大核心
1999年第S1期33-42,共10页
Geological Review
基金
国家自然科学基金(编号49774228)资助项目部分成果
关键词
火山旋回
银河年周期
差异旋转
地幔柱
臭氧层
volcanic cycles
Galactic Year
differential rotation
mantle plume
ozonosphere