Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2019GL086022 |
A Full-Spectrum Bedrock Thermal Expansion Model and Its Impact on the Global Positioning System Height Time Series | |
Lei, Jintao1; Chen, Wu1; Li, Zhao1; Li, Fei2; Zhang, Shengkai2 | |
2020-01-16 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS
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ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2020 |
卷号 | 47期号:1 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China |
英文摘要 | Bedrock thermal expansion includes prominent seasonal (annual and semiannual) terms and intricate nonseasonal variations (high-frequency change and transient signals). However, the nonseasonal variations are usually ignored in geodetic studies due to defects in analytical solutions. In this study, we calculate the full-spectrum bedrock thermal expansion displacement using the skin temperature from the ERA5 reanalysis data set. The results show that the nonseasonal variations of bedrock thermal expansion, with a range (maximum minus minimum) reaching 3 mm in some regions, can be observed by geodetic instruments and thus cannot be ignored. Moreover, the mean power of the nonseasonal variations accounts for 20% of the entire thermal expansion. Without considering the influence of the nonseasonal variations, this "noise" would remain in the original observations and contaminate related geophysical inversions. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000513983400036 |
WOS关键词 | DIFFERENT SPATIAL SCALES ; SEASONAL-VARIATIONS ; GPS ; DEFORMATION ; WATER ; REGION ; GRACE |
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/279501 |
专题 | 气候变化 |
作者单位 | 1.Hong Kong Polytech Univ, Dept Land Surveying & Geoinformat, Hong Kong, Peoples R China; 2.Wuhan Univ, Chinese Antarctic Ctr Surveying & Mapping, Wuhan, Peoples R China |
推荐引用方式 GB/T 7714 | Lei, Jintao,Chen, Wu,Li, Zhao,et al. A Full-Spectrum Bedrock Thermal Expansion Model and Its Impact on the Global Positioning System Height Time Series[J]. GEOPHYSICAL RESEARCH LETTERS,2020,47(1). |
APA | Lei, Jintao,Chen, Wu,Li, Zhao,Li, Fei,&Zhang, Shengkai.(2020).A Full-Spectrum Bedrock Thermal Expansion Model and Its Impact on the Global Positioning System Height Time Series.GEOPHYSICAL RESEARCH LETTERS,47(1). |
MLA | Lei, Jintao,et al."A Full-Spectrum Bedrock Thermal Expansion Model and Its Impact on the Global Positioning System Height Time Series".GEOPHYSICAL RESEARCH LETTERS 47.1(2020). |
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