Addressing past monsoon variability from speleothems

被引：3

作者：

Band, Shraddha ^{[1
]}

Yadava, M. G. ^{[2
]}

机构：

[1] Natl Taiwan Univ, Geosci Dept, Taipei, Taiwan

[2] Phys Res Lab, Ahmadabad 380009, Gujarat, India

来源：

CURRENT SCIENCE | 2020年 / 119卷 / 02期

关键词：

Indian monsoon; palaeoclimate; periodic analysis; speleothem; INDIAN-SUMMER MONSOON; HIGH-RESOLUTION; TRACE-ELEMENT; CENTRAL HIMALAYA; HULU CAVE; PRECIPITATION VARIABILITY; PARTITION-COEFFICIENTS; ISOTOPIC COMPOSITION; CLIMATE-CHANGE; STABLE OXYGEN;

D O I：

10.18520/cs/v119/i2/244-254

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Numerous observations indicate that speleothems can record signatures of the past climate variability. Systematics of stable isotopes and trace elements in speleothems and current methods of dating are discussed. delta O-18 in Indian speleothems is presently being used as a monsoon proxy. Several records from Indian karst locations are available, many of these cover recent several millennia and some extend back to similar to 280 ka. Salient features of monsoon variability reconstructed so far from Indian speleothems is briefly discussed. Some of the delta O-18 records show presence of non-persistent periodic changes suggesting controls of subtle variations in solar output and internal changes in the climate system.

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页码：244 / 254

页数：11

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