{"title":"岩盤地下水の水質・同位体組成調査*(1)","authors":"本島 勲","doi":"10.5917/JAGH1959.27.39","DOIUrl":"https://doi.org/10.5917/JAGH1959.27.39","url":null,"abstract":"","PeriodicalId":422881,"journal":{"name":"THE JOURNAL OF THE JAPANESE ASSOCIATION OF GROUNDWATER HYDROLOGY","volume":"387 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1985-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124792816","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":"特性曲線型有限要素法を用いた密度差のある地下水流動の数値解析-淡水・塩水2相流への応用","authors":"藤縄 克之","doi":"10.5917/JAGH1959.26.12","DOIUrl":"https://doi.org/10.5917/JAGH1959.26.12","url":null,"abstract":"","PeriodicalId":422881,"journal":{"name":"THE JOURNAL OF THE JAPANESE ASSOCIATION OF GROUNDWATER HYDROLOGY","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1984-02-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127659835","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}
A transient dispersion-convection equation, which appears in the problems of heat and mass transport in flowing groundwater, is solved numerically by means of a finite element method coupled with the method of characteristics. Numerical errors such as numerical dispersion and oscillation, generally encountered in solving dispersion-convection equations numerically, can be eliminated by using the proposed method. Numerical solutions by the characteristic finite element method showed good agreement with analy-
{"title":"A‘Characteristie’Finite Element Method for Dispersion-Convection Equation.","authors":"K. Fujinawa","doi":"10.5917/JAGH1959.25.93","DOIUrl":"https://doi.org/10.5917/JAGH1959.25.93","url":null,"abstract":"A transient dispersion-convection equation, which appears in the problems of heat and mass transport in flowing groundwater, is solved numerically by means of a finite element method coupled with the method of characteristics. Numerical errors such as numerical dispersion and oscillation, generally encountered in solving dispersion-convection equations numerically, can be eliminated by using the proposed method. Numerical solutions by the characteristic finite element method showed good agreement with analy-","PeriodicalId":422881,"journal":{"name":"THE JOURNAL OF THE JAPANESE ASSOCIATION OF GROUNDWATER HYDROLOGY","volume":"105 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1983-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133869041","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":"非定常地下水変動場における透水(量)係数の推定","authors":"上田 年比古, 文昭 平野, 健二 神野","doi":"10.5917/JAGH1959.25.81","DOIUrl":"https://doi.org/10.5917/JAGH1959.25.81","url":null,"abstract":"","PeriodicalId":422881,"journal":{"name":"THE JOURNAL OF THE JAPANESE ASSOCIATION OF GROUNDWATER HYDROLOGY","volume":"99 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1983-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129752221","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}
Preseismic and coseismic changes in groundwater level at the earthquake on February 20 and June 12, 1978, both of which occurred off the coast of Miyagi prefecture, are studied. The study was conducted by the data recorded at wells installed for the protection of groundwater resources in Miyagi prefecture. The record of groundwater level change is so complicated due to superimposing of various kinds of noises, that processed trend lines instead are mainly analyzed. The trend of groundwater level for 30 days, 10 days and 0.5-1 days preceding each earthquake showed normal pattern, without any signs of preseismic effects. The coseismic change in groundwater level is detected at all wells. The direction of the change did not coincide with stress distribution which is estimated from initial shock of seismic wave. The amplitude of level changes decreased with an increase of depth of strainers. This phenomenon is regarded as a result of sediment compaction by
{"title":"The Fluctuation in Groundwater Level prior and after the Miyagi Oki Earthquakes.","authors":"Yoshitake Egawa","doi":"10.5917/JAGH1959.22.119","DOIUrl":"https://doi.org/10.5917/JAGH1959.22.119","url":null,"abstract":"Preseismic and coseismic changes in groundwater level at the earthquake on February 20 and June 12, 1978, both of which occurred off the coast of Miyagi prefecture, are studied. The study was conducted by the data recorded at wells installed for the protection of groundwater resources in Miyagi prefecture. The record of groundwater level change is so complicated due to superimposing of various kinds of noises, that processed trend lines instead are mainly analyzed. The trend of groundwater level for 30 days, 10 days and 0.5-1 days preceding each earthquake showed normal pattern, without any signs of preseismic effects. The coseismic change in groundwater level is detected at all wells. The direction of the change did not coincide with stress distribution which is estimated from initial shock of seismic wave. The amplitude of level changes decreased with an increase of depth of strainers. This phenomenon is regarded as a result of sediment compaction by","PeriodicalId":422881,"journal":{"name":"THE JOURNAL OF THE JAPANESE ASSOCIATION OF GROUNDWATER HYDROLOGY","volume":"74 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1980-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127356864","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}
The occurrence of a landslide is very often correlated with topographical and geological characteristics of the landslide area as well as the existence of groundwater in the area. Therefore, overall information about surface and underground water in the landslide area is required in order to elucidate the mechanism of the slide, to predict its activity, and to design construction works for its prevention. On the basis of various findings and observations hitherto accumulated on groundwater in and outside landslide areas, the water may be divided into two categories ; the one flowing at a low filtration velocity through strata which are regarded hydrogeologically as aquifers, and the other flowing at considerably high filtration velocities through stratum portions, water veins which are distinguished in permeability from their surroundings. When the water veins postulated above are supplied with a large quantity of water at a stretch by a heavy rain or meltwater, or when abnormal effects are exercised on the veins by an earthquake, banking, or other causes, a possibility of landslide occurrence is developed. Therefore, in order to elucidate the above-mentioned mechanism etc., it is necessary to grasp the routes and scales of these water veins. The conditions of existence of groundwater in and outside landslide areas used to be investigated mainly by seismic and/or electrical methods which utilize either elastic or electrical properties of soil mass including water, respectively. These methods are useful to detect places where water may exist in a relatively large quantity. However, the both methods have furnished little information with regard to water existing in a vein form. Considering circumstances in summer that many landslide areas are rich in cold spring water and on the other hand the earth's surface is heated to a warmer temperature by solar radiation, the utilization of the temperature difference between them could offer useful information on the location and size of water vein. Reflecting upon the methods so far used, the author found out that methods utilizing thermal properties of water and soil are not included among them. Prospecting methods applying underground temperature measurement at shallow depth have been studied and employed mainly in the field of hot-spring exploration. YUHARA (1955) presented a method by which the scale and existence depth of a hot-spring vein are estimated theoretically from a temperature-distance curve obtained by measuring 1-m-depth underground temperature. Except for the field of hot-springs, NOMURA and MAKINO (1958) carried out preliminary investigations for mining by measuring temperature of shallow depth up to 60 cm, and examined the accuracy of ther-
{"title":"Method of Investigating Groundwater-vein Streams by Measuring One-meter-depth Temperature in Landslide Areas Part 1","authors":"A. Takeuchi","doi":"10.5917/JAGH1959.22.73","DOIUrl":"https://doi.org/10.5917/JAGH1959.22.73","url":null,"abstract":"The occurrence of a landslide is very often correlated with topographical and geological characteristics of the landslide area as well as the existence of groundwater in the area. Therefore, overall information about surface and underground water in the landslide area is required in order to elucidate the mechanism of the slide, to predict its activity, and to design construction works for its prevention. On the basis of various findings and observations hitherto accumulated on groundwater in and outside landslide areas, the water may be divided into two categories ; the one flowing at a low filtration velocity through strata which are regarded hydrogeologically as aquifers, and the other flowing at considerably high filtration velocities through stratum portions, water veins which are distinguished in permeability from their surroundings. When the water veins postulated above are supplied with a large quantity of water at a stretch by a heavy rain or meltwater, or when abnormal effects are exercised on the veins by an earthquake, banking, or other causes, a possibility of landslide occurrence is developed. Therefore, in order to elucidate the above-mentioned mechanism etc., it is necessary to grasp the routes and scales of these water veins. The conditions of existence of groundwater in and outside landslide areas used to be investigated mainly by seismic and/or electrical methods which utilize either elastic or electrical properties of soil mass including water, respectively. These methods are useful to detect places where water may exist in a relatively large quantity. However, the both methods have furnished little information with regard to water existing in a vein form. Considering circumstances in summer that many landslide areas are rich in cold spring water and on the other hand the earth's surface is heated to a warmer temperature by solar radiation, the utilization of the temperature difference between them could offer useful information on the location and size of water vein. Reflecting upon the methods so far used, the author found out that methods utilizing thermal properties of water and soil are not included among them. Prospecting methods applying underground temperature measurement at shallow depth have been studied and employed mainly in the field of hot-spring exploration. YUHARA (1955) presented a method by which the scale and existence depth of a hot-spring vein are estimated theoretically from a temperature-distance curve obtained by measuring 1-m-depth underground temperature. Except for the field of hot-springs, NOMURA and MAKINO (1958) carried out preliminary investigations for mining by measuring temperature of shallow depth up to 60 cm, and examined the accuracy of ther-","PeriodicalId":422881,"journal":{"name":"THE JOURNAL OF THE JAPANESE ASSOCIATION OF GROUNDWATER HYDROLOGY","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1980-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121058325","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}
About 60, 000 m3 of ground water is being used every day in Tokamachi City for textile industry and melting snow. Hence, groundwater level has been remarkably lowered in the urban center. The auther made a survey on groundwater of the said area, and found the interesting fact that there is a relationship between the distribution of groundwater quality and the contamination, which is reported in this paper.
{"title":"Change in Electric Resistivity of Ground Water, due to Contamination","authors":"S. Iwanaga","doi":"10.5917/JAGH1959.19.77","DOIUrl":"https://doi.org/10.5917/JAGH1959.19.77","url":null,"abstract":"About 60, 000 m3 of ground water is being used every day in Tokamachi City for textile industry and melting snow. Hence, groundwater level has been remarkably lowered in the urban center. The auther made a survey on groundwater of the said area, and found the interesting fact that there is a relationship between the distribution of groundwater quality and the contamination, which is reported in this paper.","PeriodicalId":422881,"journal":{"name":"THE JOURNAL OF THE JAPANESE ASSOCIATION OF GROUNDWATER HYDROLOGY","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1977-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122269752","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":"宮城県.鬼首.吹上温泉地域から吹上沢に流入した温泉水量と地下水量","authors":"次男 尾崎","doi":"10.5917/JAGH1959.18.101","DOIUrl":"https://doi.org/10.5917/JAGH1959.18.101","url":null,"abstract":"","PeriodicalId":422881,"journal":{"name":"THE JOURNAL OF THE JAPANESE ASSOCIATION OF GROUNDWATER HYDROLOGY","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1976-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129863822","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}
Introduction In paddy fields, the water table depth of shallow groundwater fluctuates through irrigation. Irrigation water, conveyed usually by the river, is distributed into paddy fields through irrigation canals. Therefore, by using data obtained from continuously measuring the water depth of the river, the water table depth of shallow groundwater in paddy fields can be predicted. Using data showing the water depth of the Aya River in Kagawa Prefecture, a prediction of the water table depth of shallow groundwater in paddy fields in the lower part of the river was attempted. Method The water table depth of the shallow groundwater in the study area was daily measured by using observation wells (Fig. 1). Data showing the water table depth during the six years from July 1964 to June 1970 was used for this analysis. The water level in the Aya River was observed one time daily at the Kamogawa Measuring Point of the Kamogawa Water Purifying Plant of the Bureau of Water Supply of the Sakaide Municipal Office. The Measuring Point is located about three km up the river from AR-5. Data, from July 1964 to June 1970, showing the water level of the Aya River, was obtained at this Measuring Point and used for this study. Results and Discussions As shown in Fig. 1, a low dam to protect the paddy fields from seawater intrusion at high tide has been constructed near the Kumoi Bridge in the lower part of the Aya River. Below this low dam, fluctuation of the water level in the Aya River is definitely affected by tidal motin. It is known that the groundwater fluctuates in response to ocean tides on the coast (1, 4). And as reported in the previous paper (2) , data (obtained from observation wells located in the lower part of the study area below the low dam) showed that the fluctuation of the water table of the shallow groundwater was more affected by tidal motion than by precipitation. Therefore, data obtained from the ten observation wells, such as ER-1 and ER 2, FR-1 to FR-5, EL-1 and EL-2, and FL-1 was not used for this analysis. In order to see the relationship between D and H, a figure, as shown in Fig. 2, was
{"title":"On the Relationship between the Water Level in the River and the Water Table Depth of Shallow Groundwater in Paddy Fields","authors":"K. Fukuda","doi":"10.5917/JAGH1959.14.15","DOIUrl":"https://doi.org/10.5917/JAGH1959.14.15","url":null,"abstract":"Introduction In paddy fields, the water table depth of shallow groundwater fluctuates through irrigation. Irrigation water, conveyed usually by the river, is distributed into paddy fields through irrigation canals. Therefore, by using data obtained from continuously measuring the water depth of the river, the water table depth of shallow groundwater in paddy fields can be predicted. Using data showing the water depth of the Aya River in Kagawa Prefecture, a prediction of the water table depth of shallow groundwater in paddy fields in the lower part of the river was attempted. Method The water table depth of the shallow groundwater in the study area was daily measured by using observation wells (Fig. 1). Data showing the water table depth during the six years from July 1964 to June 1970 was used for this analysis. The water level in the Aya River was observed one time daily at the Kamogawa Measuring Point of the Kamogawa Water Purifying Plant of the Bureau of Water Supply of the Sakaide Municipal Office. The Measuring Point is located about three km up the river from AR-5. Data, from July 1964 to June 1970, showing the water level of the Aya River, was obtained at this Measuring Point and used for this study. Results and Discussions As shown in Fig. 1, a low dam to protect the paddy fields from seawater intrusion at high tide has been constructed near the Kumoi Bridge in the lower part of the Aya River. Below this low dam, fluctuation of the water level in the Aya River is definitely affected by tidal motin. It is known that the groundwater fluctuates in response to ocean tides on the coast (1, 4). And as reported in the previous paper (2) , data (obtained from observation wells located in the lower part of the study area below the low dam) showed that the fluctuation of the water table of the shallow groundwater was more affected by tidal motion than by precipitation. Therefore, data obtained from the ten observation wells, such as ER-1 and ER 2, FR-1 to FR-5, EL-1 and EL-2, and FL-1 was not used for this analysis. In order to see the relationship between D and H, a figure, as shown in Fig. 2, was","PeriodicalId":422881,"journal":{"name":"THE JOURNAL OF THE JAPANESE ASSOCIATION OF GROUNDWATER HYDROLOGY","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1972-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126347234","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 IN EAST PAKISTAN","authors":"M. Yoshikawa","doi":"10.5917/JAGH1959.13.12","DOIUrl":"https://doi.org/10.5917/JAGH1959.13.12","url":null,"abstract":"","PeriodicalId":422881,"journal":{"name":"THE JOURNAL OF THE JAPANESE ASSOCIATION OF GROUNDWATER HYDROLOGY","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1971-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129330462","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}
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