菲律宾海北部19cal.kaBP以来表层海水温度变化  

SEA SURFACE TEMPERATURE VARIATIONS IN THE NORTHERN PHILIPPINE SEA SINCE 19 CAL KABP

作　　者：吴永华[1,2] 翦知湣[2] 石学法[1] 程振波[1] 李小艳[1,2] 石丰登[1] 

机构地区：[1]国家海洋局第一海洋研究所海洋沉积与环境地质国家海洋局重点实验室,青岛266061 [2]同济大学海洋地质国家重点实验室,上海200092

出　　处：《海洋地质与第四纪地质》2012年第4期123-129,共7页Marine Geology & Quaternary Geology

基　　金：国家自然科学基金重点项目(40431002);国家自然科学基金项目(40806028);国家海洋局第一海洋研究所基本科研业务费专项资金项目(2009G21)

摘　　要：对菲律宾海北部E-2岩心柱(29.62°N、131.14°E,水深3 877m)进行了浮游有孔虫δ18 O分析、AMS14 C测年以及U3k7表层海水温度(U3k7-SST)的测试。结果表明,E-2岩心记录了约19cal.kaBP以来U3k7-SST变化过程,其末次冰消期整体变化过程与北大西洋高纬地区相似,记录了Heinrich 1(H1)、Blling/Allerd(B/A)和Younger Dryas(YD)等快速气候事件,同时也识别出发生于19.4～19.2和18.5～18.0cal.kaBP的2次变冷事件,说明了研究区与北大西洋气候存在遥相关;在B/A和YD阶段中发现的百年尺度气候波动及变化过程,可能反映了热带过程对研究区域的影响;E-2岩心柱末次冰消期变暖存在阶段性,其变暖时间开始于19.4cal.kaBP,而大幅升温阶段则从15.3cal.kaBP开始。Planktonic foraminiferal δ18O, AMS14C ages and U^k37 derived sea surface temperature （U^k37-SST） were analyzed at the gravity core E-2 from the northern Philippine Sea （29.62°N、131.14°E,water depth 3 877 m, core length 282 cm）. The results record the history of U^k37-SST variations since 19 cal kaBP. On the whole, the pattern of last deglaciation warming is similar to that in the high-latitude North Atlantic re- gion, implying a climate tele-connection between the northern Philippine Sea and high-latitude North At- lantic. Some climate events are recognized such as Heinrich 1 （H1）, B011ing/Aller0d （B/A）, Younger Dr- yas （YD）, and other two cold events at 19.4-19.2 and 18. 5-18.0 cal. kaBP respectively. The centenni- al-scale U37-SST variations are superimposed on the B/A and YD periods, probably suggesting a tropical influence on the study area. We also found that the last deglaciation warming probably began at - 19.4 cal. kaBP, and the more rapid warming started at -15.3 cal. kaBP.

关 键 词：末次冰消期 U3k7 表层海水温度 菲律宾海 

分 类 号：P736.2[天文地球—海洋地质]