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| DOI | 10.13168/AGG.2024.0007 |
| COMPARATIVE ANALYSIS OF PCA AND ICA ON TREND ESTIMATION OF SEA-LEVEL CHANGE FROM TIDE GAUGE OBSERVATIONS | |
| 发表日期 | 2024 |
| ISSN | 1214-9705 |
| 起始页码 | 21 |
| 结束页码 | 1 |
| 卷号 | 21期号:1 |
| 英文摘要 | Sea -level rise directly caused by climate change is impacting coasts around the world and lowlying islands, requiring a continuous accurate monitoring. We analyze the sea -level data observed by 20 tide gauges located in the east coast of the United States of America (USA) over the period January 1972 to December 2021 by using an open -source toolbox SLR_APP. After mitigating noise using Principal Component Analysis (PCA) and Independent Component Analysis (ICA) method, we estimate the trend change and its uncertainty of sea -level considering the stochastic noise properties of the observations. The sea -level estimates and associated uncertainty are smaller than the raw observations after the noise reduction. Our results show that: the average values of the absolute trend change are 1.51 % and 0.82 %, and the mean trend uncertainty are reduced by 44.78 % and 21.26 % after PCA and ICA noise reduction, respectively. We conclude that PCA method performs better than ICA especially in reducing the associated trend uncertainty of the sea level change. Improving the sea -level rise estimation and prediction contribute globally to enhance public safety, in particular for the coastal communities. |
| 英文关键词 | Tide Gauge; Sea-Level Change; Trend Estimation; Stochastic Noise; PCA; ICA |
| 语种 | 英语 |
| WOS研究方向 | Geochemistry & Geophysics ; Mining & Mineral Processing |
| WOS类目 | Geochemistry & Geophysics ; Mining & Mineral Processing |
| WOS记录号 | WOS:001207146300006 |
| 来源期刊 | ACTA GEODYNAMICA ET GEOMATERIALIA
 |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/294692 |
| 作者单位 | Jiangxi University of Science & Technology; Jiangxi Normal University; East China University of Technology |
| 推荐引用方式 GB/T 7714 | . COMPARATIVE ANALYSIS OF PCA AND ICA ON TREND ESTIMATION OF SEA-LEVEL CHANGE FROM TIDE GAUGE OBSERVATIONS[J],2024,21(1). |
| APA | (2024).COMPARATIVE ANALYSIS OF PCA AND ICA ON TREND ESTIMATION OF SEA-LEVEL CHANGE FROM TIDE GAUGE OBSERVATIONS.ACTA GEODYNAMICA ET GEOMATERIALIA,21(1). |
| MLA | "COMPARATIVE ANALYSIS OF PCA AND ICA ON TREND ESTIMATION OF SEA-LEVEL CHANGE FROM TIDE GAUGE OBSERVATIONS".ACTA GEODYNAMICA ET GEOMATERIALIA 21.1(2024). |
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