Palaeoclimatic cycles and new glacial periods induced by the impact of extraterrestrial bodies  

作　　者：WANG Shijie, OUYANG Ziyuan, XIAO Zhifeng and LI Chunlai State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550002, China. 

出　　处：《Chinese Science Bulletin》1999年第S2期128-130,共3页

摘　　要：THE consequence of "nuclear winter" induced by nuclear war and climatic catastrophe induced by extraterrestrial impact were widely studied for fear of the potential danger of the basic nuclear war (the totalexplosive equivalent 5 000Mt TNT). Using zero-dimensional energy balance model authors reportedthe short-term climatic effect induced by six huge Cenozoic bolide-impact events (65, 34, 15, 2.4,1.1, 0.73 MaBP). However, only the direct climatic effect of dusts yielded by the impact was considered in the previous study. In this note, based on the previous simulation results the effect of variance ofglobal reflectance with temperature on the long-term climatic change was further taken into consideration.Combined with the strata records of palaeoclimatic change the relationship of impact energy with its in-

关 键 词：BOLIDE impact events palaeoclimatic cycle formation of NEW GLACIAL period SIMULATING calculation Cenozoic. 

分 类 号：P532[天文地球—古生物学与地层学]