作　　者： ; ;

机构地区： 南京大学地理与海洋科学学院海岸与海岛开发教育部重点实验室

出　　处： 《海洋地质与第四纪地质》 2011年第1期93-100,共8页

摘　　要： 20世纪80年代中期以来,光释光技术广泛应用于海岸风沙沉积物测年研究中,并取得了丰硕的成果。随着光释光测年激发光源和单片再生剂量方法的快速发展,海岸风沙光释光测年的时间范围不断扩大,测年的准确度逐渐提高,已测得最年轻的海岸风沙沉积物的年龄小于10年,最老的年龄达到90多万年。利用光释光年龄重建海岸风沙演化进程及其与全球气候变化关系的研究,正成为学术界关注的焦点,光释光测年方法在将来的砂质海岸演化、区域气候变化及海平面变化等全球变化问题的研究中具有广阔发展前景。 Since the mid-1980＇s much progress has been made in the use of optical stimulated luminescence（OSL） dating method into the studies of coastal aeolian sediments.OSL is one of the important dating methods used in Quaternary geology and archeology.In this paper the main achievements and advances in OSL dating of coastal aeolian sediments were summarized.With the development of the stimulating light source and OSL dating methods itself,more accurate dating results of the coastal aeolian sediments could be obtained.The improvement of OSL dating methods,such as the single aliquot additive dose protocol and the single aliquot regenerative dose protocol,has expanded the dating range and enhanced the precision of OSL dating.The youngest age of coastal aeolian sediments,which have been dated by OSL dating,is within 10 years,and the oldest one is over 900 thousands years.A great deal of researches in this field focus on the evolution of coastal aeolian dune and its relationship with global climate changes in the past.With the ongoing development of OSL dating technology,sandy coast evolution,regional climatic changes and sea level changes will be studied deeply and widely in the near future.

关 键 词： 光释光测年 海岸风沙 过去气候变化

领　　域： [天文地球] [天文地球]