Acta Geodynamica et Geomaterialia最新文献

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Iteration Empirical Mode Decomposition to reduce the north-south striping noise in GRACE post-processing 迭代经验模式分解以减少 GRACE 后处理中的南北条纹噪声
Acta Geodynamica et Geomaterialia Pub Date : 2024-06-06 DOI: 10.13168/agg.2024.0014
Zhao Wu
{"title":"Iteration Empirical Mode Decomposition to reduce the north-south striping noise in GRACE post-processing","authors":"Zhao Wu","doi":"10.13168/agg.2024.0014","DOIUrl":"https://doi.org/10.13168/agg.2024.0014","url":null,"abstract":"Considering that the traditional EMD method cannot be used to sufficiently extract true geophysical signals during GRACE time-varying gravity field postprocessing, a novel iterative empirical mode decomposition (EMD) processing strategy was proposed. The proposed iterative EMD method fully considers the inadequacy of the traditional EMD method in extracting geophysical signals and filtering noise. In this research, a 14-yr spherical harmonic (SH) time series of GRACE CSR RL06 data truncated to degree and order 60 was analysed by the iterative EMD method, and the results were compared with those of the traditional EMD method. To gain insight into the extracted signals, we analysed them from two perspectives: the spectral domain and the spatial domain. The results showed that the correlation coefficients between the filtered SH coefficients obtained by the iterative EMD method and the original SH coefficients are lower than those obtained by the traditional EMD method; for example, the correlation coefficients of C 12,12 and C 60,60 were 0.95 and 0.88 and 0.72 and 0.58, respectively. The spatial domain results indicated that compared with the traditional EMD method, the iterative EMD method could effectively retain the signal intensity while filtering north ‒ south stripe noise. Moreover, to evaluate the noise filtering efficiency, the ratios of the latitude-weighted RMS over land and ocean were adopted, and the mean RMS ratios for all available months obtained via the iterative and traditional EMD methods were 3.54 and 3.34, respectively, representing a relative improvement of 6.17 %. Finally, to verify the accuracy of the iterative EMD method in extracting geophysical signals, two river basins were analysed via comprehensive comparison with GRACE mascon data, and the results showed that the estimated regional mean mass change series obtained via the iterative EMD method is closer to that obtained from the GRACE mascon data. Thus, it can be concluded that the iterative EMD method can be employed to effectively suppress noise and more accurately extract real geophysical signals relative to the traditional EMD method.","PeriodicalId":502375,"journal":{"name":"Acta Geodynamica et Geomaterialia","volume":"42 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141377879","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Integrated analysis on gravity, 2D seismic, and well data of the Abu Tumayam Trough, Western Sirt Basin, Libya 利比亚西锡尔特盆地阿布图马亚姆海槽重力、二维地震和油井数据综合分析
Acta Geodynamica et Geomaterialia Pub Date : 2024-05-14 DOI: 10.13168/agg.2024.0013
Abdelhakim S. Eshanibli
{"title":"Integrated analysis on gravity, 2D seismic, and well data of the Abu Tumayam Trough, Western Sirt Basin, Libya","authors":"Abdelhakim S. Eshanibli","doi":"10.13168/agg.2024.0013","DOIUrl":"https://doi.org/10.13168/agg.2024.0013","url":null,"abstract":"","PeriodicalId":502375,"journal":{"name":"Acta Geodynamica et Geomaterialia","volume":"21 21","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140982130","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Hardy function modeling elevation anomaly based Tikhonov regularization 基于 Tikhonov 正则化的哈代函数建模海拔异常
Acta Geodynamica et Geomaterialia Pub Date : 2024-03-21 DOI: 10.13168/agg.2024.0008
Xiannan Han
{"title":"Hardy function modeling elevation anomaly based Tikhonov regularization","authors":"Xiannan Han","doi":"10.13168/agg.2024.0008","DOIUrl":"https://doi.org/10.13168/agg.2024.0008","url":null,"abstract":"","PeriodicalId":502375,"journal":{"name":"Acta Geodynamica et Geomaterialia","volume":"94 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140224105","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Explore the relationship between sunspot area and sunspot number with a new method 用新方法探索太阳黑子面积与太阳黑子数量之间的关系
Acta Geodynamica et Geomaterialia Pub Date : 2024-02-05 DOI: 10.13168/agg.2024.0003
Juan Zhao
{"title":"Explore the relationship between sunspot area and sunspot number with a new method","authors":"Juan Zhao","doi":"10.13168/agg.2024.0003","DOIUrl":"https://doi.org/10.13168/agg.2024.0003","url":null,"abstract":"","PeriodicalId":502375,"journal":{"name":"Acta Geodynamica et Geomaterialia","volume":"185 6","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139862716","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
tatistically optimal Slepian method for processing GRACE Level 2 data 处理 GRACE 2 级数据的最佳 Slepian 统计方法
Acta Geodynamica et Geomaterialia Pub Date : 2024-02-05 DOI: 10.13168/agg.2024.0004
Yu Cao
{"title":"tatistically optimal Slepian method for processing GRACE Level 2 data","authors":"Yu Cao","doi":"10.13168/agg.2024.0004","DOIUrl":"https://doi.org/10.13168/agg.2024.0004","url":null,"abstract":"","PeriodicalId":502375,"journal":{"name":"Acta Geodynamica et Geomaterialia","volume":"30 5","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139805100","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Explore the relationship between sunspot area and sunspot number with a new method 用新方法探索太阳黑子面积与太阳黑子数量之间的关系
Acta Geodynamica et Geomaterialia Pub Date : 2024-02-05 DOI: 10.13168/agg.2024.0003
Juan Zhao
{"title":"Explore the relationship between sunspot area and sunspot number with a new method","authors":"Juan Zhao","doi":"10.13168/agg.2024.0003","DOIUrl":"https://doi.org/10.13168/agg.2024.0003","url":null,"abstract":"","PeriodicalId":502375,"journal":{"name":"Acta Geodynamica et Geomaterialia","volume":"13 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139802809","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
tatistically optimal Slepian method for processing GRACE Level 2 data 处理 GRACE 2 级数据的最佳 Slepian 统计方法
Acta Geodynamica et Geomaterialia Pub Date : 2024-02-05 DOI: 10.13168/agg.2024.0004
Yu Cao
{"title":"tatistically optimal Slepian method for processing GRACE Level 2 data","authors":"Yu Cao","doi":"10.13168/agg.2024.0004","DOIUrl":"https://doi.org/10.13168/agg.2024.0004","url":null,"abstract":"","PeriodicalId":502375,"journal":{"name":"Acta Geodynamica et Geomaterialia","volume":"37 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139864965","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Mineralogical, physicochemical and thermal investigations of Taibet and Tendla sands material from the Northern Algerian Sahara 阿尔及利亚撒哈拉沙漠北部塔伊贝特和坦德拉沙材料的矿物学、物理化学和热学研究
Acta Geodynamica et Geomaterialia Pub Date : 2023-11-28 DOI: 10.13168/agg.2023.0014
Meriem Touil
{"title":"Mineralogical, physicochemical and thermal investigations of Taibet and Tendla sands material from the Northern Algerian Sahara","authors":"Meriem Touil","doi":"10.13168/agg.2023.0014","DOIUrl":"https://doi.org/10.13168/agg.2023.0014","url":null,"abstract":"","PeriodicalId":502375,"journal":{"name":"Acta Geodynamica et Geomaterialia","volume":"4 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139223704","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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