Identification of frequent La Nina events during the early 1800s in the east equatorial Pacific

被引：5

作者：

Druffel, Ellen R. M. ^{[1
]}

Griffin, Sheila ^{[1
]}

Vetter, Desiree ^{[1
]}

Dunbar, Robert B. ^{[2
]}

Mucciarone, David M. ^{[2
]}

机构：

[1] Univ Calif Irvine, Dept Earth Syst Sci, Irvine, CA 92697 USA

[2] Stanford Univ, Environm Earth Syst Sci, Stanford, CA 94305 USA

来源：

GEOPHYSICAL RESEARCH LETTERS | 2015年 / 42卷 / 05期

基金：

美国国家科学基金会;

关键词：

corals; paleoclimate; ENSO; El Nino; La Nina; Central Mode Water; CLIMATE VARIABILITY; RADIOCARBON; CALIBRATION; RECORD; PROXY; ENSO;

D O I：

10.1002/2014GL062997

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

We report measurements of near monthly C-14 and O-18 during selected decades from an east equatorial Pacific coral that grew during the past four centuries. We find that El Nino events occurred regularly during the late 1700s. During the early 1800s, El Nino events occurred less often, and La Nina conditions prevailed, which were accompanied by unprecedented, low cool season C-14 values and high cool season O-18 values. These results indicate that shallow overturning water (e.g., Central Mode Water) from the North Pacific was likely an important source of water to the Galapagos area during the early 1800s.

引用

页码：1512 / 1519

页数：8

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