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DOI | 10.1029/2020GL092329 |
Apparent periodic and long‐term changes in AAIW and UCDW properties at fixed depths in the Southwest Pacific, with indications of a regime shift in the 1930s | |
Ronald E. Thresher; Stewart J. Fallon | |
2021-04-26 | |
发表期刊 | Geophysical Research Letters
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出版年 | 2021 |
英文摘要 | Metal/calcium ratios in two long‐lived deep‐sea gorgonian corals (Lepidisis and Corallium spp.) in the Southwest Pacific evidence periodic decadal variability at depths that correspond to Antarctic Intermediate Water (AAIW) and shallow Upper Circumpolar Deep Water, and a shift in the mid‐ to late 1930s in mean ambient temperatures, barium/silicate concentrations and possibly pH, the rate at which these properties change over time, and the relationship between temperatures at fixed depth and the Southern Annular Mode (SAM). The decadal periodicity, which is evident in other biological indices in the study area, can be accounted by water mass heave on the order of 100‐150 m, which is consistent with observed scales of variability in the AAIW. The proximate and ultimate causes of the mid‐century shifts are unclear, but could be related to suggested mid‐20th century changes in climate parameters globally and, more specifically, in the sub‐polar SW Pacific. |
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/325000 |
专题 | 气候变化 |
推荐引用方式 GB/T 7714 | Ronald E. Thresher,Stewart J. Fallon. Apparent periodic and long‐term changes in AAIW and UCDW properties at fixed depths in the Southwest Pacific, with indications of a regime shift in the 1930s[J]. Geophysical Research Letters,2021. |
APA | Ronald E. Thresher,&Stewart J. Fallon.(2021).Apparent periodic and long‐term changes in AAIW and UCDW properties at fixed depths in the Southwest Pacific, with indications of a regime shift in the 1930s.Geophysical Research Letters. |
MLA | Ronald E. Thresher,et al."Apparent periodic and long‐term changes in AAIW and UCDW properties at fixed depths in the Southwest Pacific, with indications of a regime shift in the 1930s".Geophysical Research Letters (2021). |
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