Precise reconstruction of sea surface temperature for the last 10,000 years based on skeletal records of hermatypic corals.

对基海岛和关岛造礁石珊瑚的骨骼记录进行了深入调查。他们导致了以下两个结论。1.我们从基海岛的全新世阶地收集了造礁石珊瑚化石，也没有Ruckus。珊瑚没有被成岩作用改变。珊瑚δ^<18>（δ^<18>）表明，在6.3-8.1 ka期间，菊海岛的海表温度（SST）等于或略低于现今（25.4℃），3.1-6.3 ka和1.4-3.1 ka期间分别比现今低3℃和1℃.我们研究了骨骼记录在213年的珊瑚芯（Porites lodata），GD 2，从双礁，关岛。1980-2000年δ^<18>O_3<coral>呈季节性波动，振幅较小，为0.23-0.57%_o（VPDB）。在<18><coral>厄尔尼诺年（γ=-0.81）和非厄尔尼诺/南方涛动年（γ=-0.66），SST与δ^ O之间的统计相关性比拉尼娜年（γ=-0.48）强。这些不同的统计关系反映了<18><18><sw>厄尔尼诺（&lt;27℃）和拉尼娜（&gt;21℃）期间关岛冬季SST和海水δ^ O（δ^ O）的变化，反映了西太平洋暖池（WPWP）的迁移。在厄尔尼诺期冬季，由于西太平洋海温的东移，关岛被相对较低的SST和较高的SSS水团所包围，在GD 2中表现为相对较大的季节SST振幅和正的δ^<18>O_2异常<sw>。而在拉尼娜期间的冬季，由于西太平洋海温的向西移，蒸发量增加，降水量减少，SST超过28℃，SSS变大。这些变化导致了La Nina期、El Nino期、El Nino期和El Nino期SST季节变化小得多，并导致δ^<18>O_2<sw>正距平。

Intensive investigations have been conducted on skeletal records of hermatypic corals from Kikai-jima and Guam. They have led to the following two conclusions.1. We collected fossil hermatypic corals from the Holocene terraces on Kikai-jima, nor them Ruckus. The corals have net been diagenetically altered. Coral δ^<18>(δ^<18>) indicates that sea surface temperature (SST) were equal to or somewhat cooler than the present (25.4℃) during 6.3-8.1 ka in Kikai-jima and that it was lower than the present by 3℃ and 1℃ during 3.1-6.3 ka and 1.4-3.1 ka, respectivety.2. We have examined skeletal records in a 213-year coral core (Porites lodata), GD2, from Double Reef, Guam. δ^<18>O_<coral> shows seasonal fluctuations with small amplitudes of 0.23-0.57%_o (VPDB) for the years 1980-2000. A stronger statistical relationship exists between SST and δ^<18>O_<coral> for El Nino years (γ=-0.81) and non-ENSO years (El Nino/Southern Oscillation) (γ=-0.66) than for La Nina years (γ=-0.48). These different statistical relationships are a manifestation of changes in the winter season SST and changes in seawater δ^<18>O (δ^<18>O_<sw>) during El Nino (<27℃) versus la Nina periods (>21℃) at Guam, which reflects the migration of Western Pacific Warm Pool (WPWP). In the winter season of EI Nino periods, Guam Island is surrounded by a relatively low SST and high SSS water mass due to eastward migration of WPWP, which is recorded in GD2 as a relatively Large amplitude of seasonal SST and positive anomalies δ^<18>O_<sw>. In contrast, in the winter season of La Nina periods, SST exceeds 28℃ and SSS becomes greater by increases in evaporation and decreases in precipitation due to the westward migration of WPWP. These changes result in much smaller changes in seasonal SST foe La Nina periods El Nino periods to El Nino periods and in positive δ^<18>O_<sw> anomalies.