Salinity records for the 1997-98 El Nino from Western Pacific corals

被引：84

作者：

Morimoto, M ^{[1
]}

Abe, O

Kayanne, H

Kurita, N

Matsumoto, E

Yoshida, N

机构：

[1] Univ Tokyo, Dept Earth & Planetary Sci, Tokyo 1130033, Japan

[2] Nagoya Univ, Grad Sch Environm Studies, Nagoya, Aichi 4648601, Japan

[3] Tokyo Inst Technol, Dept Environm Sci & Technol, Yokohama, Kanagawa 2268502, Japan

[4] Japan Sci & Technol Corp, CREST, Kawaguchi, Japan

来源：

GEOPHYSICAL RESEARCH LETTERS | 2002年 / 29卷 / 11期

关键词：

D O I：

10.1029/2001GL013521

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

[1] Seasonal sea surface salinity (SSS) records can be of great value in reconstructing El Nino/Southern Oscillation (ENSO) variability in the equatorial Western and Central Pacific, a region where ENSO-related evaporation and precipitation (E-P) changes are dramatic. The delta(18)O values of coral skeleton (delta(18)O(coral)) reflect seawater delta(18)O (delta(18)O(seawater)) changes, which in tropical oceans are also generally influenced by E-P changes. Therefore, delta(18)O(coral) is a good indicator of rainfall and ENSO variability. We present biweekly data from Palau, in the northern part of the Western Pacific Warm Pool, for the period 1998-2000, which indicate a strong quantitative relationship between delta(18)O(coral), sea surface temperature, delta(18)O(seawater) and SSS. The coral skeletal delta(18)O values documented the SSS changes after the 1997-98 El Nino; therefore, delta(18)O(coral) can be used to estimate paleosalinity changes. However, the slope of the delta(18)O(seawater) - SSS relationship cannot be assumed to be constant throughout the tropics, making site-specific calibrations is essential.

引用

页码：35 / 1

页数：4

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