中国科学院南海海洋研究所机构知识库
Advanced  
SCSIO OpenIR  > 海洋科技动态信息-印太暖池系统研究  > 期刊论文
学科主题: Geochemistry & Geophysics
题名: Oxygen isotope systematics in Diploastrea heliopora: New coral archive of tropical paleoclimate
作者: Watanabe, T ; Gagan, MK ; Correge, T ; Scott-Gagan, H ; Cowley, J ; Hantoro, WS
通讯作者: nabe@kahaku.go.jp
刊名: GEOCHIMICA ET COSMOCHIMICA ACTA
发表日期: 2003-01-01
卷: 67, 期:7, 页:1349-1358
收录类别: sci
部门归属: Australian Natl Univ, Res Sch Earth Sci, Canberra, ACT 0200, Australia; Natl Sci Museum, Dept Geol, Tokyo 1690073, Japan; Inst Rech Dev, Noumea 98800, New Caledonia; Indonesian Inst Sci, Res & Dev Ctr Geotechnol, Bandung 40135, Indonesia
摘要: Diploastrea heliopora forms dense, robust, dome-shaped coral colonies throughout the reef ecosystems of the tropical Pacific and Indian Oceans. This slow-growing (2 to 6 mm/yr) coral has the potential to yield continuous paleoclimate records spanning up to 1000 yr for the warmest waters on Earth, the Indo-Pacific Warm Pool, and has a long fossil history as a single recognizable species. Despite the potential of Diploastrea to be an important new paleoclimate archive, little is known about the systematics of geochemical tracers incorporated into its skeleton. To fill this knowledge gap, we compared skeletal delta(18)O signatures in live Diploastrea and Porites colonies from Southwest Lagoon, near Amedee Lighthouse, New Caledonia (at the southern latitudinal limit for Diploastrea) and Alor, Indonesia (in the core area of the Indo-Pacific Warm Pool). We designed a new microsampling technique to minimize smoothing and distortion of the isotopic records due to the complex calyx architecture and slow growth of Diploastrea. High-resolution isotope profiles from the septal portion of the Diploastrea corallite are attenuated, whereas those restricted to the central columella are similar in quality to those extracted from the well-established Porites coral archive. The delta(18)O-temperature relationship for the columellar portion of Diploastrea (-0.18parts per thousand/degreesC) is in good agreement with that derived for a nearby Porites (-0.19parts per thousand/degreesC; Quinn et al., 1996), on the basis of comparison with an in situ sea surface temperature record from Amedee Lighthouse. There is a measurable difference of 0.3 +/- 0.1parts per thousand between the kinetic/biological disequilibrium offsets from seawater delta(18)O composition for Diploastrea and Porites. Despite this offset in mean delta(18)O, Diploastrea accurately records the regional differences in mean temperature and salinity between New Caledonia and the Indo-Pacific Warm Pool. Additional tests show that Diploastrea records El Nino-Southern Oscillation (ENSO) interannual variability in sea surface temperature and salinity across the southwestern Pacific, indicating that it should yield dependable paleo-ENSO records. Based on these results, we propose that D. heliopora has the potential to provide an important new coral archive of tropical paleoclimate. (C) Copyright 2003 Elsevier Science Ltd.
原文出处: 查看原文
内容类型: 期刊论文
URI标识: http://ir.scsio.ac.cn/handle/344004/8491
Appears in Collections:海洋科技动态信息-印太暖池系统研究_期刊论文

Files in This Item: Download All
File Name/ File Size Content Type Version Access License
Oxygen isotope systematics in Diploastrea heliopora New coral archive of tropical paleoclimate.pdf(559KB)----开放获取--View Download

Recommended Citation:
Watanabe, T; Gagan, MK; Correge, T; Scott-Gagan, H; Cowley, J; Hantoro, WS.Oxygen isotope systematics in Diploastrea heliopora: New coral archive of tropical paleoclimate,GEOCHIMICA ET COSMOCHIMICA ACTA,2003,67(7):1349-1358
Service
Recommend this item
Sava as my favorate item
Show this item's statistics
Export Endnote File
Google Scholar
Similar articles in Google Scholar
[Watanabe, T]'s Articles
[Gagan, MK]'s Articles
[Correge, T]'s Articles
CSDL cross search
Similar articles in CSDL Cross Search
[Watanabe, T]‘s Articles
[Gagan, MK]‘s Articles
[Correge, T]‘s Articles
Related Copyright Policies
Null
Social Bookmarking
Add to CiteULike Add to Connotea Add to Del.icio.us Add to Digg Add to Reddit
文件名: Oxygen isotope systematics in Diploastrea heliopora New coral archive of tropical paleoclimate.pdf
格式: Adobe PDF
所有评论 (0)
暂无评论
 
评注功能仅针对注册用户开放,请您登录
您对该条目有什么异议,请填写以下表单,管理员会尽快联系您。
内 容:
Email:  *
单位:
验证码:   刷新
您在IR的使用过程中有什么好的想法或者建议可以反馈给我们。
标 题:
 *
内 容:
Email:  *
验证码:   刷新

Items in IR are protected by copyright, with all rights reserved, unless otherwise indicated.

 

 

Valid XHTML 1.0!
Copyright © 2007-2017  中国科学院南海海洋研究所 - Feedback
Powered by CSpace