Physics and Chemistry of the Earth, Part A: Solid Earth and Geodesy最新文献_第6页

Concatenation of hourly RINEX files 每小时RINEX文件的连接

Physics and Chemistry of the Earth, Part A: Solid Earth and Geodesy Pub Date : 2001-01-01 Epub Date: 2001-06-27 DOI: 10.1016/S1464-1895(01)00101-6

H. Habrich

引用次数: 0

Mechanical compaction, microstructures and permeability evolution in sandstones 砂岩力学压实、微观结构及渗透率演化

Physics and Chemistry of the Earth, Part A: Solid Earth and Geodesy Pub Date : 2001-01-01 Epub Date: 2001-04-02 DOI: 10.1016/S1464-1895(01)00021-7

C. David , B. Menendez , W. Zhu , T-f. Wong

引用次数: 87

Thematic volume on “compaction, subsidence and the mechanics of granular materials” 专题卷“压实、沉降和颗粒材料力学”

Physics and Chemistry of the Earth, Part A: Solid Earth and Geodesy Pub Date : 2001-01-01 Epub Date: 2006-08-26 DOI: 10.1016/S1464-1895(01)80003-X

C. David (Guest editor of Physics and Chemistry of the Earth), N. Petford (Guest editor of Physics and Chemistry of the Earth), R. Risnes (Guest editor of Physics and Chemistry of the Earth)

引用次数: 1

Compaction of microfossil and clay-rich chalk sediments 微化石和富粘土白垩沉积物的压实作用

Physics and Chemistry of the Earth, Part A: Solid Earth and Geodesy Pub Date : 2001-01-01 Epub Date: 2001-04-02 DOI: 10.1016/S1464-1895(01)00023-0

I.L. Fabricius

{"title":"Compaction of microfossil and clay-rich chalk sediments","authors":"I.L. Fabricius","doi":"10.1016/S1464-1895(01)00023-0","DOIUrl":"10.1016/S1464-1895(01)00023-0","url":null,"abstract":"<div><p>The aim of this study was to evaluate the role of microfossils and clay in the compaction of chalk facies sediments. To meet this aim, chalk sediments with varying micro texture were studied. The sediments have been tested uniaxially confined in a stainless-steel compaction cell. The sediments are: 1) Pure carbonate chalk with mudstone texture from Stevns Klint (Denmark), 2) Relatively pure chalk sediments with varying content of microfossils from the Ontong Java Plateau (Western Pacific), 3) Clay-rich chalk and mixed sediments from the Caribbean. The tested samples were characterised by porosity, carbonate content, and microfossil content. The texture was quantified by analysis of backscattered electron micrographs of polished sections. The samples do not compact along a common stress — porosity trend. This observation can be explained as a result of the differences in content of microfossils and fine-grained silica and clay. Samples with relatively pure chalk mud supported texture compact along a common stress — matrix porosity trend. Microfossils thus have a passive role, apparently because they are supported by the chalk mud. Samples with fine-grained silica and clay can be modelled to follow the same trend if we assume that a part of the fine-grained silica and clay are in the supporting frame and that the remaining silica and clay has a passive pore-filling role. The modelled part of the clay and silica in the frame varies from 0% to 100%. Porosity and sonic velocity variations for a given degree of consolidation may be a key to indirect interpretation of content of microfossils and porefilling fine-grained silica and clay in chalk.</p></div>","PeriodicalId":101024,"journal":{"name":"Physics and Chemistry of the Earth, Part A: Solid Earth and Geodesy","volume":"26 1","pages":"Pages 59-62"},"PeriodicalIF":0.0,"publicationDate":"2001-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1464-1895(01)00023-0","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81794649","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: 14

An assessment of the quality of GPS/MET radio limb soundings during February 1997 1997年2月全球定位系统/MET无线电肢体探测的质量评估

Physics and Chemistry of the Earth, Part A: Solid Earth and Geodesy Pub Date : 2001-01-01 DOI: 10.1016/S1464-1895(01)00035-7

C. Marquardt, K. Labitzke, C. Reigber, T. Schmidt, J. Wickert

引用次数: 27

Atmospheric water vapour content determined from zenith delay assuming a local model of troposphere 假设对流层局地模式，由天顶延迟确定大气水蒸气含量

Physics and Chemistry of the Earth, Part A: Solid Earth and Geodesy Pub Date : 2001-01-01 Epub Date: 2001-05-07 DOI: 10.1016/S1464-1895(01)00040-0

K. Kuyrzyńska, A. Gabryszewska

引用次数: 6

The IGS global data center at the CDDIS - an update 位于CDDIS的IGS全球数据中心——一个更新

Physics and Chemistry of the Earth, Part A: Solid Earth and Geodesy Pub Date : 2001-01-01 Epub Date: 2001-06-27 DOI: 10.1016/S1464-1895(01)00108-9

C. Noll , M. Dube

引用次数: 8

On hourly orbit determination 每小时轨道测定

Physics and Chemistry of the Earth, Part A: Solid Earth and Geodesy Pub Date : 2001-01-01 Epub Date: 2001-06-27 DOI: 10.1016/S1464-1895(01)00100-4

J. Douša, L. Mervart

引用次数: 7

Atmospheric sounding by ground-based and space-based systems 地面和天基系统的大气探测

Physics and Chemistry of the Earth, Part A: Solid Earth and Geodesy Pub Date : 2001-01-01 Epub Date: 2001-05-07 DOI: 10.1016/S1464-1895(01)00036-9

N.A. Berbeneva, V.E. Kunitsyn, O.G. Razinkov, V.I. Zakharov

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引用次数: 5

Atmospheric modeling in GPS data analysis for high accuracy positioning 大气模拟在GPS数据分析中的高精度定位

Physics and Chemistry of the Earth, Part A: Solid Earth and Geodesy Pub Date : 2001-01-01 Epub Date: 2001-06-27 DOI: 10.1016/S1464-1895(01)00069-2

O. Bock , E. Doerflinger

{"title":"Atmospheric modeling in GPS data analysis for high accuracy positioning","authors":"O. Bock , E. Doerflinger","doi":"10.1016/S1464-1895(01)00069-2","DOIUrl":"10.1016/S1464-1895(01)00069-2","url":null,"abstract":"<div><p>In this paper we review the atmospheric modeling methods used in GPS data analysis. Due to the strong spatial inhomogeneity and temporal variability of atmospheric constituents, especially water vapor, accurate modeling of path delay in GPS signals is necessary for high-accuracy positioning (e.g., tectonics and sea-level change) and meteorological applications (climatology and weather forecasting). State-of-the-art path delay modeling consists primarily in parameter estimation. In this strategy, zenith path delays are estimated during the GPS data reduction. External correction is another common strategy, in which the wet path delay is measured by a remote sensing instrument (usually a microwave radiometer). However, the latter is not as generalized, and is rather used for specific field campaigns or local long term observations. Both strategies have led to quite similar coordinate accuracies (using daily GPS observations), at the level of 1–2 mm in the horizontal component and 5–10 mm in the vertical component. The external correction strategy is capable of achieving even higher accuracy under specific conditions. Recent models, including gradients in the parameter estimation strategy have only led to marginal improvement. A major limitation of both strategies seems to be the use of mapping functions for the hydrostatic path delay correction. With the parameter estimation strategy, this limitation applies also to wet path delay correction. The use of numerical weather prediction and analysis models, and/or spaceborne sounding instruments, is suggested for replacing mapping functions and possibly for performing directly the hydrostatic correction. New instruments, such as Raman lidars, might also be used for a more accurate external wet path delay correction in the presence of strong atmospheric inhomogeneity. Further work is still needed for achieving measurements of absolute water vapor distribution in the atmosphere for this purpose.</p></div>","PeriodicalId":101024,"journal":{"name":"Physics and Chemistry of the Earth, Part A: Solid Earth and Geodesy","volume":"26 6","pages":"Pages 373-383"},"PeriodicalIF":0.0,"publicationDate":"2001-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1464-1895(01)00069-2","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79534639","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: 44