JaLCDOI 10.18926/ESR/49210
タイトル(別表記) Estimation of SPM concentration distribution over the central Seto Inland Sea
フルテキストURL esr_019_1_019_024.pdf
著者 海老 貴宏| 松本 宏文| 山川 純次|
抄録 Ordinary Kriging, OK, and Regression Kriging, RK, are the spatial statistical methods that are possible to estimate a horizontal distribution in a study area from discrete data. OK is the method which takes account of only spatial auto-correlation structure of the data, while RK is the method which takes account of an interrelationship between spatial auto-correlation structure and some auxiliary variables to minimize the estimation error. Analytical processing for OK and RK methods was performed by the R-Language (R Core Team, 2012) and its some additional libraries. The auxiliary variables required to perform RK method were prepared by a GIS application, Quantum GIS (Quantum GIS Development Team, 2012). The 3-dimensional geographic representation of the estimation maps was performed by the Google Earth (Google, 2012). In this report, OK and RK methods were applied to one of the Earth scientific information, SPM (Supended Particulate Matter). Then, these methods were considered by comparing two estimation maps, and finally considered qualitatively by displaying these maps in the Google Earth.
キーワード Ordinary Kriging Regression Kriging Auxiliary variable R-Language Google Earth
出版物タイトル Okayama University Earth Science Report
発行日 2012-12-26
19巻
1号
開始ページ 19
終了ページ 24
ISSN 1340-7414
言語 Japanese
著作権者 © 2012 by Okayama University Earth Science Reports Editorial Committee All Rights Reserved
論文のバージョン publisher
NAID 120005232328
JaLCDOI 10.18926/ESR/47746
タイトル(別表記) KED estimated distribution of Earth Scientific Information
フルテキストURL esr_018_1_001_003.pdf
著者 山川 純次| 海老 貴宏| 松本 宏文|
抄録 KED, the Kriging with External Drift, is one of the spatial statistical method for estimating some distribution from the discrete spatial sampled data set about the research field. The KED uses the kriging method (Matheron, 1973) with some auxiliary map to minimize the estimated error. The KED procedure was performed by the R-Language (Ihaka and Gentleman, 1996) using some geostatistical libraries. The auxiliary maps required by the KED were prepared by the authors with some GIS applications. The 3-dimensional geographic representations for the estimated distribution were performed by the Google Earth (Google, 2011). In this report, the KED was applied to some Earth scientific information to show the fundamental scheme of the method.
キーワード KED Universal kriging Regression kriging R-Language Google Earth
出版物タイトル Okayama University Earth Science Report
発行日 2011-12-26
18巻
1号
開始ページ 1
終了ページ 3
ISSN 1340-7414
言語 Japanese
著作権者 © 2011 by Okayama University Earth Science Reports Editorial Committee All Rights Reserved
論文のバージョン publisher
NAID 120003796474
JaLCDOI 10.18926/ESR/42460
タイトル(別表記) Representation of Earth scientific information by the Google(TM) Earth
フルテキストURL esr_017_025_026.pdf
著者 山川 純次| 海老 貴宏| 松本 宏文|
抄録 The Google(TM) Earth is a GIS application provided by the Google, with versatile and high performance visualization and manipulation capability for geographic information. The Google Earth is also a multi-platform application, so the installation and running cost for research and education site is relatively low. The Earth scientific information also have a geographic information scheme, so the Google Earth has some potential to support the education and research field of the Earth science. In this report, some Earth scientific information were converted by the R-Language and its libraries for represent by the Google Earth. The 3-dimensional representation of the information will be able to support to understanding the specification of the data for the Earth scientific research and education field.
キーワード Earth scientific information GIS Google Earth Kriging R-Language
出版物タイトル Okayama University Earth Science Report
発行日 2010-12-24
17巻
1号
開始ページ 25
終了ページ 26
ISSN 1340-7414
言語 Japanese
著作権者 © 2010 by Okayama University Earth Science Reports Editorial Committee All Rights Reserved
論文のバージョン publisher
NAID 120002753318
JaLCDOI 10.18926/ESR/42459
タイトル(別表記) DGEM: Digital Geological Elevation Model
フルテキストURL esr_017_021_023.pdf
著者 山川 純次| 海老 貴宏| 松本 宏文|
抄録 DGEM, a Digital Geological Elevation Model, was developed using the digital geological map and the JPGIS DEM data with some GIS application and the R-Language. In the model, the information of the geological map was combined with the DEM by their coordinates. The integration of those two digital map was performed by the R-Language, so the model can be used by some useful presentation library of the language, such as the RGL, or by some geographical calculation libraries. Moreover, the DGEM will be used by the spatial statistical libraries of the R-Language to investigate some geological spatial distributed specifications.
キーワード Digital geological map DEM JPGIS QuantumGIS R-Language
出版物タイトル Okayama University Earth Science Report
発行日 2010-12-24
17巻
1号
開始ページ 21
終了ページ 23
ISSN 1340-7414
言語 Japanese
著作権者 © 2010 by Okayama University Earth Science Reports Editorial Committee All Rights Reserved
論文のバージョン publisher
NAID 120002753317