Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1002/2016GL071197 |
Signals of astronomical climate forcing in the exposure topography of the North Polar Layered Deposits of Mars | |
Becerra, Patricio; Sori, Michael M.; Byrne, Shane | |
2017 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS
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ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2017 |
卷号 | 44期号:1 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | Using high-resolution topography, we link the stratigraphy of layered ice deposits at the north pole of Mars to astronomically driven climate variability. Observations of trough exposures within these deposits are used to construct virtual ice cores at 16 sites, to which we apply wavelet analysis to identify periodicities in layer properties. To confidently relate these periodicities to climatic forcing, we identify overlapping dominant stratigraphic wavelengths and compare their ratios to that of the two dominant modes of insolation variability. The average ratio of stratigraphic wavelengths in the profiles is 1.90.1, lower than the ratio of 2.3 between dominant insolation periodicities. A similar analysis of synthetic stratigraphic profiles created with a climate-driven model of ice and dust accumulation shows that this lower stratigraphic ratio is a natural consequence of time-variable ice accumulation rates. |
英文关键词 | Mars polar climate record |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000393954900008 |
WOS关键词 | INTERANNUAL VARIABILITY ; DUST STORMS ; ICE AGES ; REGION ; STRATIGRAPHY ; CYCLES ; RECORD |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
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/27123 |
专题 | 气候变化 |
作者单位 | Univ Arizona, Lunar & Planetary Lab, Tucson, AZ 85721 USA |
推荐引用方式 GB/T 7714 | Becerra, Patricio,Sori, Michael M.,Byrne, Shane. Signals of astronomical climate forcing in the exposure topography of the North Polar Layered Deposits of Mars[J]. GEOPHYSICAL RESEARCH LETTERS,2017,44(1). |
APA | Becerra, Patricio,Sori, Michael M.,&Byrne, Shane.(2017).Signals of astronomical climate forcing in the exposure topography of the North Polar Layered Deposits of Mars.GEOPHYSICAL RESEARCH LETTERS,44(1). |
MLA | Becerra, Patricio,et al."Signals of astronomical climate forcing in the exposure topography of the North Polar Layered Deposits of Mars".GEOPHYSICAL RESEARCH LETTERS 44.1(2017). |
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