10BE Isotope Recordsin Sediment Core Z14-6fromthe Eastern Okinawa Trough Duringthe Last Deglaciationand Holocene
详细信息
- 责任者：Yang Yongliang(National Research Center of Geoanalysis ; Beijing 100037) ; Liu Zhenxia
- 刊名：Quaternary Sciences
- 出版年：2012
- 卷期：32(3)
- 页码：p.417-422
- issnNo：ISSN1001-7410
- isbnNo：CN11-2708/P
摘要
line !important; FONT: 13px/21px Verdana, Arial, Helvetica, sans-serif; WHITE-SPACE: normal; ORPHANS: 2; FLOAT: none; LETTER-SPACING: normal; COLOR: rgb(51,51,51); WORD-SPACING: 0px; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px">The WEIGHT: normal; WORD-SPACING: 0px; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px">10line !important; FONT: 13px/21px Verdana, Arial, Helvetica, sans-serif; WHITE-SPACE: normal; ORPHANS: 2; FLOAT: none; LETTER-SPACING: normal; COLOR: rgb(51,51,51); WORD-SPACING: 0px; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px">Be records in sediment Core Z14-6 from the eastern side of the middle Okinawa Trough(27°07’N,127°27’E; water depth: 739m;core length: 8.96m)during the last glacial period and the Holocene are discussed and compared with the 10line !important; FONT: 13px/21px Verdana, Arial, Helvetica, sans-serif; WHITE-SPACE: normal; ORPHANS: 2; FLOAT: none; LETTER-SPACING: normal; COLOR: rgb(51,51,51); WORD-SPACING: 0px; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px">Be records in sediment Core DGKS9603(28°08.869’N,127° 16.238’E;water depth: 1100m,core length: 585cm)from the North Okinawa Trough. 10line !important; FONT: 13px/21px Verdana, Arial, Helvetica, sans-serif; WHITE-SPACE: normal; ORPHANS: 2; FLOAT: none; LETTER-SPACING: normal; COLOR: rgb(51,51,51); WORD-SPACING: 0px; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px">Be concentrations in 12 layers in the core section of 2~175cm which covers the chronologic range of 0.37~29.3kaB.P.were determined using Accelerating Mass-Spectrometry(AMS). The average 10line !important; FONT: 13px/21px Verdana, Arial, Helvetica, sans-serif; WHITE-SPACE: normal; ORPHANS: 2; FLOAT: none; LETTER-SPACING: normal; COLOR: rgb(51,51,51); WORD-SPACING: 0px; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px">Be concentration was 6.10×108line !important; FONT: 13px/21px Verdana, Arial, Helvetica, sans-serif; WHITE-SPACE: normal; ORPHANS: 2; FLOAT: none; LETTER-SPACING: normal; COLOR: rgb(51,51,51); WORD-SPACING: 0px; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px"> atoms/g,with the maximum 8.71×108line !important; FONT: 13px/21px Verdana, Arial, Helvetica, sans-serif; WHITE-SPACE: normal; ORPHANS: 2; FLOAT: none; LETTER-SPACING: normal; COLOR: rgb(51,51,51); WORD-SPACING: 0px; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px">atoms/g occurring at 6.3kaB.P.The 10line !important; FONT: 13px/21px Verdana, Arial, Helvetica, sans-serif; WHITE-SPACE: normal; ORPHANS: 2; FLOAT: none; LETTER-SPACING: normal; COLOR: rgb(51,51,51); WORD-SPACING: 0px; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px">Be concentrations in the last glacial were generally low and also lower than those in DGKS9603.The average sedimentation rate of 10line !important; FONT: 13px/21px Verdana, Arial, Helvetica, sans-serif; WHITE-SPACE: normal; ORPHANS: 2; FLOAT: none; LETTER-SPACING: normal; COLOR: rgb(51,51,51); WORD-SPACING: 0px; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px">Be in Z14-6 was 1.04×109line !important; FONT: 13px/21px Verdana, Arial, Helvetica, sans-serif; WHITE-SPACE: normal; ORPHANS: 2; FLOAT: none; LETTER-SPACING: normal; COLOR: rgb(51,51,51); WORD-SPACING: 0px; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px"> atoms/cm2line !important; FONT: 13px/21px Verdana, Arial, Helvetica, sans-serif; WHITE-SPACE: normal; ORPHANS: 2; FLOAT: none; LETTER-SPACING: normal; COLOR: rgb(51,51,51); WORD-SPACING: 0px; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px">·ka,with the maximum 1.36×109line !important; FONT: 13px/21px Verdana, Arial, Helvetica, sans-serif; WHITE-SPACE: normal; ORPHANS: 2; FLOAT: none; LETTER-SPACING: normal; COLOR: rgb(51,51,51); WORD-SPACING: 0px; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px"> atoms/cm2line !important; FONT: 13px/21px Verdana, Arial, Helvetica, sans-serif; WHITE-SPACE: normal; ORPHANS: 2; FLOAT: none; LETTER-SPACING: normal; COLOR: rgb(51,51,51); WORD-SPACING: 0px; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px">·ka occurred at 6.3kaB.P.and minimum 6.45×108line !important; FONT: 13px/21px Verdana, Arial, Helvetica, sans-serif; WHITE-SPACE: normal; ORPHANS: 2; FLOAT: none; LETTER-SPACING: normal; COLOR: rgb(51,51,51); WORD-SPACING: 0px; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px"> atoms/cm2line !important; FONT: 13px/21px Verdana, Arial, Helvetica, sans-serif; WHITE-SPACE: normal; ORPHANS: 2; FLOAT: none; LETTER-SPACING: normal; COLOR: rgb(51,51,51); WORD-SPACING: 0px; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px">·ka at 9.27kaB.P.layers,respectively.Due to the shallow water depth,the Kuroshio did not flow through Z14-6 during the last glacial,therefore the average sedimentation rate of 10line !important; FONT: 13px/21px Verdana, Arial, Helvetica, sans-serif; WHITE-SPACE: normal; ORPHANS: 2; FLOAT: none; LETTER-SPACING: normal; COLOR: rgb(51,51,51); WORD-SPACING: 0px; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px">Be in Z14-6 was at the level of the global mean 10line !important; FONT: 13px/21px Verdana, Arial, Helvetica, sans-serif; WHITE-SPACE: normal; ORPHANS: 2; FLOAT: none; LETTER-SPACING: normal; COLOR: rgb(51,51,51); WORD-SPACING: 0px; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px">Be atmospheric production rate(1.21×109line !important; FONT: 13px/21px Verdana, Arial, Helvetica, sans-serif; WHITE-SPACE: normal; ORPHANS: 2; FLOAT: none; LETTER-SPACING: normal; COLOR: rgb(51,51,51); WORD-SPACING: 0px; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px"> atoms/cm2line !important; FONT: 13px/21px Verdana, Arial, Helvetica, sans-serif; WHITE-SPACE: normal; ORPHANS: 2; FLOAT: none; LETTER-SPACING: normal; COLOR: rgb(51,51,51); WORD-SPACING: 0px; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px">·ka). The decreases of sedimentation rate of 10line !important; FONT: 13px/21px Verdana, Arial, Helvetica, sans-serif; WHITE-SPACE: normal; ORPHANS: 2; FLOAT: none; LETTER-SPACING: normal; COLOR: rgb(51,51,51); WORD-SPACING: 0px; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px">Be may be related to the low temperature events,among which are Younger Dryas(YD)and Heinrich event H1. 10line !important; FONT: 13px/21px Verdana, Arial, Helvetica, sans-serif; WHITE-SPACE: normal; ORPHANS: 2; FLOAT: none; LETTER-SPACING: normal; COLOR: rgb(51,51,51); WORD-SPACING: 0px; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px">Be sedimentation rate of Z14-6 significantly decreased at about 3kaB.P.and 9kaB.P.,suggesting large variations of the Kuroshio Current.The peak values of 10line !important; FONT: 13px/21px Verdana, Arial, Helvetica, sans-serif; WHITE-SPACE: normal; ORPHANS: 2; FLOAT: none; LETTER-SPACING: normal; COLOR: rgb(51,51,51); WORD-SPACING: 0px; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px">Be sedimentation rate of Z14-6 in the Holocene were considerably higher than those during the last glacial period,indicating that the influence of the Kuroshio Current on Z14-6 site had occurred.