THE JOURNAL OF THE JAPANESE ASSOCIATION OF GROUNDWATER HYDROLOGY最新文献

{"title":"Estimation of Two-Dimensional Distribution of Transmissivity by Kalman Filtering Theory","authors":"F. Hirano, T. Ueda, K. Jinno","doi":"10.5917/JAGH1959.26.35","DOIUrl":"https://doi.org/10.5917/JAGH1959.26.35","url":null,"abstract":"Hydrological transmissivity is one of the important parameters for the analysis of groundwater flow. However, it is seldom that we can get exact and detailed distribution of transmissivity and hence we can not help extrapolating it, especially when there are only a few observed values. <BR> In the previous report (Ueda <I>et al</I>. , 1983c) , we proposed the method in which the optimal estimation of the spatial distribution of the transmissivity can be obtained through the Kalman Filtering Theory. In the present report, we discuss the method of generating the anisotropic random field of transmissivity and that of calculating the auto-correlation coefficient which represents the spatial structure of transmissivity. Also, we show the examples on how the anisotropic distribution of transmissivity can be obtained through the filtering theory.","PeriodicalId":422881,"journal":{"name":"THE JOURNAL OF THE JAPANESE ASSOCIATION OF GROUNDWATER HYDROLOGY","volume":"53 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132736691","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}

{"title":"Groundwater and Base Runoff in Osaka Group Hill","authors":"N. Miyake","doi":"10.5917/JAGH1959.20.175","DOIUrl":"https://doi.org/10.5917/JAGH1959.20.175","url":null,"abstract":"","PeriodicalId":422881,"journal":{"name":"THE JOURNAL OF THE JAPANESE ASSOCIATION OF GROUNDWATER HYDROLOGY","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115207914","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}

{"title":"Groundwater of Ethiopia: on the development of groundwater of A. I. D. bank Underground Water Resources Development Project@@@エチオピア農工業開発銀行(A.I.D.Bank)地下水開発プロジエクトにおける地下水開発について","authors":"M. Fujinami","doi":"10.5917/JAGH1959.19.8","DOIUrl":"https://doi.org/10.5917/JAGH1959.19.8","url":null,"abstract":"The writer has engaged in hydrogeological survey and technical services for ETHIOPIA A. I. D. BANK Undeground Water Resources Development Project. <BR> This project was started on Novemder 1974, ultilizing six Japanese drilling rigs (four percussion type and two rotary type) for the purpose of solving the drought problem. <BR> Based on the data odtained from this project the writer classifies the ground water types into five classes, and are listed as follows : <BR> 1. Abyssinia plateau type <BR> 2. Rift valley type <BR> 3. Dire Dawa fan type <BR> 4. Ogaden desert type <BR> 5. Awash valley type <BR> The discharge rate is expected 100-300 1/min. with drawdown 10-40m, except the Ogaden desert in which the successful drilling depth are from 50m upto 120m. <BR> Most of the water in the survey area has a conductivity around 500ppm with hith hardness. In the Ogaden area, water from the wells shows high chlorine contents of 2000ppm and up. <BR> The water of some wells in the Rift valley, contains as high as 6ppm Fluorine. <BR> In the Awash valley the water of the wells shows high water temperature of above 30&deg;C. <BR> As for the drilling method, rotary drilling method, with the exception of few wells by air rotary drilling method, was used in the Abyssinia platau. Cable tool method was used in the Rift valley area. Either cable tool or rotary method was used in the other areas. 1.ま えが き このプロジエク トは,日 本政府 とエチオ ピア政府 との借款契約に基づ きエチオ ピァAJ.D.BANK を窓 口として新たに設立 された地下水開発 プロジエ ク トである◎ これについては蔵田延男(1974)の ◇ 三協工業株式会社地質部 (昭和52年1月10日 愛理) 報告がある◎ 1974年4月 よ り同年11月 までに プロジエ ク トのデポの建設及び機械機材の搬入が行なわれ,1974年 1珊12印 こ第1号 井がデポ内に掘 さくを開始 した.掘 さく機械は 日本製 のパーカッシ ョン型4台,ロ ータ リー2型 台の合計6台 で1975年7月 には全機稼動状態 とな り,以 来1976年5月 現在27本 が完全に 仕上が り,3本 が特殊 ポ ンプ待ち,5本 が途中で掘さ くを中止 し,3本 が掘 さ く中であ る◎","PeriodicalId":422881,"journal":{"name":"THE JOURNAL OF THE JAPANESE ASSOCIATION OF GROUNDWATER HYDROLOGY","volume":"74 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115328558","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}

{"title":"Distributicn of Cl and Fe in groundwater of the coastal basin and salt-water encroachment.","authors":"H. Okutsu","doi":"10.5917/JAGH1959.7.3","DOIUrl":"https://doi.org/10.5917/JAGH1959.7.3","url":null,"abstract":"","PeriodicalId":422881,"journal":{"name":"THE JOURNAL OF THE JAPANESE ASSOCIATION OF GROUNDWATER HYDROLOGY","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115915916","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}

{"title":"Basic Theory of Ground-Water Flow in Deformable Porous Media","authors":"M. Higuchi","doi":"10.5917/JAGH1959.21.29","DOIUrl":"https://doi.org/10.5917/JAGH1959.21.29","url":null,"abstract":"","PeriodicalId":422881,"journal":{"name":"THE JOURNAL OF THE JAPANESE ASSOCIATION OF GROUNDWATER HYDROLOGY","volume":"174 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116389373","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}

{"title":"Model Experiments of Salt Water Intrusion by Pumping Up","authors":"H. Kawabata","doi":"10.5917/JAGH1959.15.1","DOIUrl":"https://doi.org/10.5917/JAGH1959.15.1","url":null,"abstract":"","PeriodicalId":422881,"journal":{"name":"THE JOURNAL OF THE JAPANESE ASSOCIATION OF GROUNDWATER HYDROLOGY","volume":"67 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122130367","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}

{"title":"A Technique of Cross-Plot Analysis for Unconsolidated Aquifer","authors":"Keiichi Kodai","doi":"10.5917/jagh1959.19.1","DOIUrl":"https://doi.org/10.5917/jagh1959.19.1","url":null,"abstract":"Permeability das'nt relate to total porosity, but relate to effective porosity except the pores in the clay content. <BR> In order to calculate effective porosity it is expected that techniques of cross-plot analysis which has been used for consolidated or semi-consolidated reservoir in oil industry are applied to unconsolidated aquifer. Each logging of density (&rho;<SUB>b</SUB>), gamma-ray (&gamma;<SUB>ray</SUB>), normal resistivity(R), and spontaneous potential (SP) is very often carried out in water well on the point of economic view, however we see the difficlties of doing cross-plot analysis because conceptive interrelation among their logs is obscurity. Then, we expand a mathematical treatment concernig cross-ploting between density and neutron (&phi;<SUB>N</SUB>) logs which was developed by J. A. Krug and D. O. Cox in 1976, in the range of unconsolidated formation. <BR> Consequently, we get as the following matters : the quantitative detail of effective porosity and the clay content on circumference of aquifer ; and the accuracy of the values which are presumed in a mathematical tretment process. <BR> Therefore, some cross-plot among each water-well logging (&rho;<SUB>b</SUB>,&gamma;<SUB>ray</SUB>, R, and SP) will be able to analyze in fulure by combining the interrelation in the variables obtained from analysis of &rho;<SUB>b</SUB>-&phi;<SUB>N</SUB> cross-plot. 1.は じめに クロスプロヅト解析技術 とは,異 なる複数 の検層 曲線の値を縦横の両軸に して,夫 々クロス プロヅ トし解析す る技術のことであ り,相 関図的 な分析は もちろん含まれるが,主 目的はむ しろ相関から逸 脱 した分布点など,そ の間に表わ された特異 なパターンが地質的,そ して深度的に何を意味 している かを坑井物理検 層の技術的理論をふまえなが ら解折 しよ うとす るものである. すなわち,帯 水層の生命である透水性は,わ ずかな粘土の混入によ りその性質を著 しく劣化させ る *地質調査所 **Geological Survey of Japan (昭和51年11月20日 受理) ので,粘 土分 の精密な見積 りは有効間隙率の正確な見積 りとならんで最 も重要であ り,こ の透水性の 定量的算定は,多 くの場合複数種類の検層を同時的に実施 し,そ のデー・タを種 々クロス プロッ トす る ことに よ り発見できるところの各地層中の粘土分 の指示 と,こ れに反比例する透水性に関す る変数, そしてその他の地域的特徴を関係づけることによ り可能 となる. 油層工学関係における貯留層(固 結または半固結層)の ためのこの技術は,以 前か ら検層解折 のた めに班究されていて,そ の範囲も拡大されつつ ある現状にある.帯 水層(主 に未固結層)解 折のため の水井戸検層に も,こ の技術の長所を吸収応用 してい く必要が あるが,現 在は まだその初期的段階に ある◎ 2.水 井戸用クロスプ ロツトの概念について 経済性を考慮 した水井戸用 クロスプロット解析のための検層種類 としては,密 度,ガ ソマ線 比抵 抗,そ してSPの 最低4種 類の検層が考え られ,こ れ らか ら6通 りの組含せがで きる.し か し,こ の 組合せの うち,現 段階では概念的にだけみても未だ不明なものが大半である◎例 えば,ガ ンマ線 とS Pの クロスプロッ トか らは,SP応 答大,ガ ンマ線応答小のところは透水性良好部分 となる傾 向を示 すが,具 体的に,条 件の相違によ り生 じる各変数の処理を どう克服するかが未だ明確でない.と りあ えず,こ こに,ガ ソマ線 と密度,お よび ガソマ線 と比抵抗の2つ の クロスプロヅ ト解析のための一般 的概念図を示す◎ 図一1と 図一2は,砂 および砂岩の構成鉱物が石英だけで重鉱物を含 まない場合,ガ ソマ線 と密度 間,な らびにガンマ線 と比抵抗間の各地層性質区分の概念的関係範囲を表わ した ものである◎ なおシ ル ト分が混入す る場合は,放 射線強度および容積密度 とも,粘 土 と砂の中間的性質を一般に示す もの と考 えられ,そ れだけ複雑化するが,実 際には,一 井当 りで遭遇す る地質の種類は,概 念図中の全範 囲の うち数 ケ所 程 度 の分 散状 プ ロ ヅク中に プ ロ ヅ ト点 が偏 向 ・集 中す るの で,解 析 上 の困難 性は 減 少 す るはず で あ る◎ ガ ソマ線一 密度 クロス プ ロッ トの概念 図(図 一1)中 の点線 内は,多 くの場 合,主 に 欧米 に おけ る 油 層解 析の 対象 とな る地 層範 囲 として でて くる固結 または 半固 結層 の 範囲 であ って(注;図 中のSH ALEと は,O.04mmφ 以 下 の シル ト ・粘 土 に よ りつ つ まれ た 砂 ・礫 の層 と,油 層工 学上 定 義 され て い る.),未 固結 帯 水層 の場合は 主 に実線 の範 囲 内で プ ロッ トされ る.な お,ガ ンマ線 一比 抵 抗 ク ロス プPヅ トの概 念 図(図 一2)か らは,ガ ンマ線 と比抵 抗 の クロス プ","PeriodicalId":422881,"journal":{"name":"THE JOURNAL OF THE JAPANESE ASSOCIATION OF GROUNDWATER HYDROLOGY","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117092319","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}

{"title":"On the fresh-water lens at Sanri, Kochi city.","authors":"K. Shimizu","doi":"10.5917/JAGH1959.7.8","DOIUrl":"https://doi.org/10.5917/JAGH1959.7.8","url":null,"abstract":"","PeriodicalId":422881,"journal":{"name":"THE JOURNAL OF THE JAPANESE ASSOCIATION OF GROUNDWATER HYDROLOGY","volume":"124 ","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120874682","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}

{"title":"Numerical Analysis of Groundwater Density Flow with Boundary Element Method and the Effect of Impervious Wall against Salt Water Intrusion","authors":"K. Fujino","doi":"10.5917/JAGH1959.27.51","DOIUrl":"https://doi.org/10.5917/JAGH1959.27.51","url":null,"abstract":"It has been reported that the salt groundwater invade inland and the aquifers become contaminated with salt as a result of over discharges of fresh groundwater by the wells in coastal areas, and the drawdown of groundwater level by the shortage of precipitation. Consequently, it is significant to calculate the movement of salt groundwater. <BR> In the present paper, for the study of preventation of salt water intrusion, the author discusses the formulation for a numerical analysis of the groundwater density flow with the boundary element method. Numerical analysis was carried out for the following two cases, (1) the steady problem in -unconfined groundwater, (2) the unsteady problem in confined groundwater. <BR>The stability of unsteady numerical solution was obtained to calculate the real part of eigen values every time step. About the behavior of fresh and salt water interface, the numerical solutions show good agreement with the experimental results. <BR> Also, the author estimated the effect of the impervious wall for countermeasure against salt water intrusion.","PeriodicalId":422881,"journal":{"name":"THE JOURNAL OF THE JAPANESE ASSOCIATION OF GROUNDWATER HYDROLOGY","volume":"68 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124800671","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}

{"title":"Turnover Time of Groundwater Systems in the Rokko Mountains with the Aid of Environmental Tritium","authors":"K. Kitaoka, Ryuma Yoshioka","doi":"10.5917/JAGH1959.26.131","DOIUrl":"https://doi.org/10.5917/JAGH1959.26.131","url":null,"abstract":"","PeriodicalId":422881,"journal":{"name":"THE JOURNAL OF THE JAPANESE ASSOCIATION OF GROUNDWATER HYDROLOGY","volume":"78 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125042145","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}