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

{"title":"A Method for discriminating Aquifer by Density Logging","authors":"Keiichi Kodai","doi":"10.5917/JAGH1959.15.70","DOIUrl":"https://doi.org/10.5917/JAGH1959.15.70","url":null,"abstract":"","PeriodicalId":422881,"journal":{"name":"THE JOURNAL OF THE JAPANESE ASSOCIATION OF GROUNDWATER HYDROLOGY","volume":"89 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":"126401829","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":"Some Information on the Karst-spring Resources","authors":"Kiniti Simizu","doi":"10.5917/JAGH1959.7.6","DOIUrl":"https://doi.org/10.5917/JAGH1959.7.6","url":null,"abstract":"","PeriodicalId":422881,"journal":{"name":"THE JOURNAL OF THE JAPANESE ASSOCIATION OF GROUNDWATER HYDROLOGY","volume":"2 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":"130426009","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":"Ground Water Flow in Small-Scale Talus Depcsit","authors":"T. Ochiai","doi":"10.5917/JAGH1959.15.20","DOIUrl":"https://doi.org/10.5917/JAGH1959.15.20","url":null,"abstract":"","PeriodicalId":422881,"journal":{"name":"THE JOURNAL OF THE JAPANESE ASSOCIATION OF GROUNDWATER HYDROLOGY","volume":"2018 9","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120909492","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":"Water Resources of the Southern Semiarid Area of Madagascar","authors":"K. Mori","doi":"10.5917/JAGH1959.24.26","DOIUrl":"https://doi.org/10.5917/JAGH1959.24.26","url":null,"abstract":"This paper outlines the water resources of the southern area of Madagascar, which is based on the field investigation and several reports concerning with the potable water development plan requested from the government of Madagascar. <BR> The area, under the tropical semiarid climate, is classified geographically into the Mahahaly Plateau, the Karimbola Plateau and the Ambovombe Basin, from the west to the east. The average annual precipitation over the area is about 350&sim;600 mm and it decreases westward. The Karimbola Plateau and the Ambovombe Basin, where the population density is about 15 per one square kilometer, are underlain by continental sediments ranging in age from Tertiary to Quaternary. The Mahahaly Plateau is occupied by Tertiary limestone which yields little groundwater, so that the plateau is not inhabitable. <BR> European Communities have been giving assistance to construction of a pipeline from the Menarndra River to the Karimbola Plateau for supplying potable water. On the other hand, Japan will support to develop water resources in the Ambovombe Basin. About 87, 000 people living in a hill, coastal side of the basin, are in great trouble from lack of water. Apart from the hill, they manage to gain perched groundwater as well as surface water. It is very difficult to get water in the hill because the groundwater level is deep, mo:e than 100 meters from the surface, and an <I>inplubia</I> easily dries up at summer season. <BR> It is recommended to install more <I>inplubia</I> , to inquire deep groundwater as well as perched groundwater and to increase water wagons for the improvement of water supply. 地質調査所, Geological Survey of Japan.","PeriodicalId":422881,"journal":{"name":"THE JOURNAL OF THE JAPANESE ASSOCIATION OF GROUNDWATER HYDROLOGY","volume":"28 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":"130176319","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":"Chemical Water Quality in the Groundwater in the Ooyanojima Island and its Surrounding Islands, Kumamoto Prefecture","authors":"H. Ueki, Y. Otawara","doi":"10.5917/jagh1959.27.129","DOIUrl":"https://doi.org/10.5917/jagh1959.27.129","url":null,"abstract":"The purpose of this survey is to determine the chemical quality of the groundwaters in the Ooyanojima Island and its surrounding islands (Iwajima, Tobasejima, Yushima, and Nokamajima Island). These islands, a small island on the Ariake Sea and Yatsushiro Sea, is situated about fifty kilometers south west of Kumamoto City, Kumamoto Prefecture. In this article, 46 groundwater samples (38 shallow well waters and other samples) in this area were collected in September 1977 (partly during 1979 to 1983) and analyzed for the pH value, potassium permanganate consumed, total residue, major components and some ions dissolved in them. Based on the analytical results of many dissolved components, it was shown that the concentrations of the major components were widely varied in each well (table 1) . There were considerably a large amount of contents of Na+, Ca2+, HCO3—, Cl—, SO42—,and soluble silicate in the groundwaters in this area. The relations of the concentration of cations and anions in the groundwaters were Na+ )Ca2+ )Mg2+ )K+ and HCO3 )C1— )SO42—, respectively. By use of the key diagram method, the chemical composition of the groundwaters in this area was mainly devided into two different composition in each (fig. 2), namely noncarbonate hardness type (Ca—Cl•SO4 type) and carbonate hardness type (Ca—HCO3 type). The concentrations of chemical components dissolved in the shallow well waters were generally larger than that of dissolved in the deep well waters, except for total iron and soluble silicate. The concentrations of nitrate nitrogen in the shallow well waters in this area were found to be in the range of 0.2 — 39.1mg/1. Their arithmetic mean value (7.0mg/1) was markedly high and became about 10 times larger than that in the deep well waters, however, the source of that was not made to elucidate for this investigation. The concentration of soluble silicate in the groundwaters collected from the Cretaceos period","PeriodicalId":422881,"journal":{"name":"THE JOURNAL OF THE JAPANESE ASSOCIATION OF GROUNDWATER HYDROLOGY","volume":"153 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":"134057778","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":"Tiltings of Alluvial ground and Variation of waetr table and qality of free groundwater","authors":"C. Kondo","doi":"10.5917/JAGH1959.15.57","DOIUrl":"https://doi.org/10.5917/JAGH1959.15.57","url":null,"abstract":"","PeriodicalId":422881,"journal":{"name":"THE JOURNAL OF THE JAPANESE ASSOCIATION OF GROUNDWATER HYDROLOGY","volume":"12 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":"130985846","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":"Hydraulic Analysis of Ground Water with Rainfall Infiltration around Cut-Off Wall","authors":"Kuniaki Sato","doi":"10.5917/JAGH1959.23.65","DOIUrl":"https://doi.org/10.5917/JAGH1959.23.65","url":null,"abstract":"This paper presents a hydraulic analysis of unconfined ground water with the rainfall infiltration around the cut-off wall, based on Dupiut's assumption as used in hydraulics. Flow analysis is concerned with change of water depth, change of flow rate and storage volume originated in construction of cut-off wall on the declined impermeable bed. It is clearly found that different flow characters are formed by existing the rainfall infiltration compared with those of flow ignored the infiltration. Available informations are proposed by detail examinations of theoretical results and computation examples for steady flow of unconfined aquifer having the cut-off wall.","PeriodicalId":422881,"journal":{"name":"THE JOURNAL OF THE JAPANESE ASSOCIATION OF GROUNDWATER HYDROLOGY","volume":"125 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":"132326260","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":"Motion of the Seawater Interface in Confined Aquifer: The relation between the motion of the seawater interface and the spatial distribution of pumping intensity@@@揚水分布変動と塩水化域との関係","authors":"Y. Fukuo","doi":"10.5917/JAGH1959.14.33","DOIUrl":"https://doi.org/10.5917/JAGH1959.14.33","url":null,"abstract":"This paper describes a theoretical consideration about the effect of pumping of fresh water on the motion of seawater interface already formed in a confined aquifer. At first, the differential equation of interface is derived from the fundamental equation of confined water in the case where the aquifer is impervious at its lower surface and has the pumping well distributed continuously at its upper one, and is solved under the conditions that the constant supply of fresh water is given at a fixed point of the upper course and the pressure of water is taken as a hydrostatic distribution. From this solution, it is found that the toe of the interface is moved backward or forward by the inerease of fresh water inflow or of the amount of pumping, respectively and is also, moved more back according to the more concentration of pumping intensity on the lower course of aquiter. Finally, an example is shown for the method through which, in the coastal region where the residual flow of fresh water into the sea exists, this residue is fully pumped up within the limit that the present toe of interface remains immoved. ま え が き. 臨海地域における地下水の塩水化が,そ の地域の工業用水や灌がい用水に重要な支障をきた してい ることはずい分前か ら提起 され,各 方面から検討 されてい ることは衆知の ことである.そ の主要な原 因が過剰な揚水にもとつ くことは明らかで,塩 水化の進行を防 ぐために揚水を制限した り,表 流水の 高度な利用計画が進め られているが,こ の塩水化の現象を揚水分布 と関連 させて,理 論的に統一 した 考察を進める とい う試みは充分なされていない ように思 う. 最近では,地 方の町村にもこの塩水化問題が起 り,飲 料水生活用水な ど上水道 としての利用に も支 障を きた しつつある.そ のため,簡 易上水道 としての淡水源を上流地域に設けた井戸か ら揚水 した り, さらに深 く井戸を掘って新 しい被圧地下水を揚水 した りして,現 状を しのいでいる例を多 くみる.地 下水の塩水化域が どのよ うに進行す るかを理解 してお くことは,こ の ような計画をたてる上で是非必 要 なことである1). *京 都大学防災研究所 被圧地下 水 の場合 には,過 剰 な揚水 のために地下水圧が低下 し,滞 水層 の末端 をおお う被 ふ く層が 破れ て,海 水が浸入 しだす ことに よって,塩 水化が始 まるにちが いない.こ の論文 では,海 水 が浸入 して塩水化域 が生 じてい る所 で,揚 水分布 の変動が塩水化域 を どの よ うに前進後退 させ るかを主な対 象 として考察 した. 臨海地 域 では,潮 汐に もとつ く塩水化 の進 行 も考 え られ る.潮 汐振動 に よって,淡 塩水界面 は振動 しなが ら前 後進 し,界 面 の混 合が促進 されて,拡 散 に よる塩水化域 の拡 大が生 じるであろ う◎ この拡 大 の規模 は,滞 水層 中におけ る淡 水 と塩水 の混合 の難 易に起 因す る ことは明 らかで2),こ の問題 の解 明に努 力 したい と思 ってい るが,こ こでは,そ の準備 として,定 常状態 を取 り上げ.地 下水流 量や揚 水量 の変動に よって,こ の状態 が変化す る様i子を論 じた◎ 1.塩 水化域 の基本式 の導 出 被圧地下 水 の基礎方程式 は,地 下水 の圧 力水頭 くpiezometrichead)を ψ とす る と.次 式 の よ うに 表わ され る3). ここに,tは 時間,8は 重力加速度,toes地 下水密度 であ り,ん お よびG+2μ)は それぞれ被圧滞水 層 の透水 係数 お よび体積弾 性率 であ る. 鉛 直上方に2軸 を とる と,水 頭 ψは水圧Pを 用 いて, 滞水 層の形 は軸方 向には一様で地下水流 は二次 元流 として取扱 え る と仮定す る.滞 水層 の下面 は完全に不透 であ り,上 面 では まえが きで 述べ た よ うに塩水化 をひ きお こす揚水が存在す る場合を考察す る. 下面9=ζi(x)で の境界条件 は,図1で 見 られ る よ うに,.y軸 方 向 に単位厚,κ 軸 方 向に微小長 を もち,こ の下面が斜面 にな ってい る微 小 プ リズム1を 考 え,こ の プ リズム中に地下水が溜 らない ことを表現 すれ ば得 られ る. 上面2瓢 ζ2(x)に おける境界条件は,下 面 と同 じよ うに,こ の上面 を斜面 に もつ微小 プ リズム]1を 考 え,さ らに κ軸 の単 位長 当 りq(t,x)の 揚水 が存在す る ことを考 慮 して,こ の プ リズム中の水 収支を表現す れば よい. (1)をzに 関 して ζiか ら ζ2ま で積 分 し,3.(4)を 入 れ る と が得 られ る.κ ≡ρ9/(λ+2μ)は,滞 水 層が単位長水頭 に相当す る圧 力を周囲か ら受 けた ときに収縮 す る体積 歪に相 当す る量 で,そ の次元 は.[κ]=11Lで あ る. 一般 ,滞 水層 は水平に近 く,し たが って地下 水流 もほ とん ど水平 方 向で鉛直流 はない と近似 で き る.こ の場 合には,図2の よ うに,滞 水層下面 を ζ1-O,上 面 をk-D(Dは 滞水 層厚)に と る と都 合が よい.揚 水q(t.x)の ために地下水 圧 ρは低下 し.滞 水層 の海水 と接 してい る境界 面 が透水状態 に","PeriodicalId":422881,"journal":{"name":"THE JOURNAL OF THE JAPANESE ASSOCIATION OF GROUNDWATER HYDROLOGY","volume":"10 19","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114085621","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":"Fresh Water-Salt Water Interface Model and Hydrodynamic Dispersion Model in Coastal Aquifers","authors":"T. Kakinuma, Y. Kishi, Kunimitsu Inouchi","doi":"10.5917/JAGH1959.27.141","DOIUrl":"https://doi.org/10.5917/JAGH1959.27.141","url":null,"abstract":"","PeriodicalId":422881,"journal":{"name":"THE JOURNAL OF THE JAPANESE ASSOCIATION OF GROUNDWATER HYDROLOGY","volume":"20 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":"133873367","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 Studies of Salt Water Intrusion by Pumping Up","authors":"H. Kawabata","doi":"10.5917/JAGH1959.16.19","DOIUrl":"https://doi.org/10.5917/JAGH1959.16.19","url":null,"abstract":"","PeriodicalId":422881,"journal":{"name":"THE JOURNAL OF THE JAPANESE ASSOCIATION OF GROUNDWATER HYDROLOGY","volume":"165 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":"116124268","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}