Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2021GL092948 |
Holocene hydroclimatic reorganizations in northwest Canada inferred from lacustrine carbonate oxygen isotopes | |
G. Everett Lasher; Mark B. Abbott; Lesleigh Anderson; Lindsey Yasarer; Michael Rosenmeier; Bruce P. Finney | |
2021-08-09 | |
发表期刊 | Geophysical Research Letters |
出版年 | 2021 |
英文摘要 | Sub-centennial oxygen (δ18O) isotopes of ostracod and authigenic calcite from Squanga Lake provides evidence of hydroclimatic extremes and a series of post-glacial climate system reorganizations for the interior region of northwest Canada. Authigenic calcite δ18O values range from –16 to –21‰ and are presently similar to modern lake water and annual precipitation values. Ostracod δ18O record near identical trends with calcite, offset by +1.7 ± 0.6‰. At 11ka BP (kaBP = thousands of years before 1950), higher δ18O values reflect decreased precipitation-evaporation (P-E) balance from residual ice sheet influences on moisture availability. A trend to lower δ18O values until ∼8 ka BP reflects a shift to wetter conditions, and reorganization of atmospheric circulation. The last millennium and modern era are relatively dry, though not as dry as the early Holocene extreme. North Pacific climate dynamics remained an important driver of P-E balance in northwest Canada throughout the Holocene. |
领域 | 气候变化 |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/335847 |
专题 | 气候变化 |
推荐引用方式 GB/T 7714 | G. Everett Lasher,Mark B. Abbott,Lesleigh Anderson,et al. Holocene hydroclimatic reorganizations in northwest Canada inferred from lacustrine carbonate oxygen isotopes[J]. Geophysical Research Letters,2021. |
APA | G. Everett Lasher,Mark B. Abbott,Lesleigh Anderson,Lindsey Yasarer,Michael Rosenmeier,&Bruce P. Finney.(2021).Holocene hydroclimatic reorganizations in northwest Canada inferred from lacustrine carbonate oxygen isotopes.Geophysical Research Letters. |
MLA | G. Everett Lasher,et al."Holocene hydroclimatic reorganizations in northwest Canada inferred from lacustrine carbonate oxygen isotopes".Geophysical Research Letters (2021). |
条目包含的文件 | 条目无相关文件。 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论