Cool tropical temperatures shift the global delta O-18-T relationship: An explanation for the ice core delta O-18-borehole thermometry conflict?

被引：108

作者：

Boyle, EA

机构：

[1] Department of Earth, Massachusetts Inst. of Technology, Cambridge

[2] Department of Earth, Massachusetts Inst. of Technology, Cambridge

来源：

GEOPHYSICAL RESEARCH LETTERS | 1997年 / 24卷 / 03期

关键词：

D O I：

10.1029/97GL00081

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

The discrepancy between central Greenland borehole temperatures and the isotopic composition of Last Glacial Maximum ice can be explained by a shift in the delta(18)O-T relationship for the hydrological cycle linked to cooler tropical temperatures. This concept is illustrated using a simple Rayleigh distillation model. An estimate for alpha=Delta delta(18)O/Delta T (LGM-Holocene) of -0.37 parts per thousand/degrees C is determined with a simple graphical technique.

引用

页码：273 / 276

页数：4

共 19 条

[1] PAST ANTARCTIC PENINSULA CLIMATE (1850-1980) DEDUCED FROM AN ICE CORE ISOTOPE RECORD [J].