A first shallow firn-core record from Glaciar La Ollada, Cerro Mercedario, central Argentine Andes

被引：14

作者：

Bolius, David ^{[1
]}

Schwikowski, Margit ^{[1
]}

Jenk, Theo ^{[1
,2
]}

Gaeggeler, Heinz W. ^{[1
,2
]}

Casassa, Gino ^{[3
]}

Rivera, Andres ^{[3
,4
]}

机构：

[1] Paul Scherrer Inst, CH-5232 Villigen, Switzerland

[2] Univ Bern, Dept Chem & Biochem, CH-3012 Bern, Switzerland

[3] Ctr Estudios Cietificos, Valdivia 1469, Chile

[4] Univ Chile, Dept Geog, Lab Glaciol, Santiago 33887, Chile

来源：

ANNALS OF GLACIOLOGY, VOL 43, 2006 | 2006年 / 43卷

基金：

瑞士国家科学基金会;

关键词：

D O I：

10.3189/172756406781812474

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

In January 2003, shallow firn cores were recovered from Glaciar Esmeralda on Cerro del Plomo (33 degrees 14'S, 70 degrees 13'W, 5300 m.a.s.l.), central Chile, and from Glaciar La Ollada on Cerro Mercedario (31 degrees 58'S, 70 degrees 07'W; 6070 m.a.s.l.), Argentina, in order to find a suitable archive for paleoclimate reconstruction in a region strongly influenced by the El Nino-Southern Oscillation. In the area between 28 degrees S and 35 degrees S, the amount of winter precipitation is significantly correlated to the Southern Oscillation Index, with higher values during El Nino years. Glaciochemical analysis indicates that the paleo-record at Glaciar La Ollada is well preserved, whereas at Glaciar Esmeralda the record is strongly influenced by meltwater formation and percolation. A preliminary dating of the Mercedario core by annual-layercounting results in atime-span of 17years (1986-2002), yieldingan average annual net accumulation of 0.45 m w.e.

引用

页码：14 / +

页数：3

共 33 条

[1]

ACEITUNO P, 1988, MON WEATHER REV, V116, P505, DOI 10.1175/1520-0493(1988)116<0505:OTFOTS>2.0.CO

[2]

[3]

[Anonymous], GLOBAL HISTORICAL CL

[4] Aerosol climatology at the high-alpine site Jungfraujoch, Switzerland [J].