论文部分内容阅读
新生代以来,地表气候在大趋势上逐渐变冷,并呈现出冷暖交替的变化节律。影响气候变化的因素主要包括太阳辐射量和地内气候系统的反馈效应。揭示气候变化的最终规律需要更准确的天文计算和更长、更可靠的气候替代性指标的重建。综合大洋钻探计划IODP320、321航次在东赤道太平洋钻取了一系列保存完好、连续的深海沉积钻孔,为揭示新生代气候演变的规律提供了良好的研究材料。从全球视野的角度研究古海洋学和古气候学问题是揭示气候演变规律的良好方法,值得中国研究者借鉴。
Since the Cenozoic, the surface climate has gradually cooled down in the general trend, showing a changing rhythm of alternating cold and warm. Factors affecting climate change mainly include the amount of solar radiation and the feedback effect of the in-terrestrial climate system. Uncovering the ultimate law of climate change requires more accurate astronomical calculations and longer and more reliable reconstruction of climate-dependent indicators. Integrated ocean drilling program IODP 320,201 drilled a series of well-preserved and continuous deep-sea sedimentary boreholes in the eastern equatorial Pacific Ocean to provide a good research material for revealing the laws of Cenozoic climate evolution. Studying paleoceanography and paleoclimatology from a global perspective is a good way to reveal the law of climate evolution and is worth learning from Chinese researchers.