ISSN:0017-467X    

DOI:10.1111/j.1745-6584.1966.tb01608.x

出版商:Blackwell Publishing Ltd    

年代:1966

数据来源: WILEY

摘要:

ABSTRACTThe frequency distribution of dissolved‐solids content of ground waters in geologically and climatologically homogeneous terrane units commonly approximates a log‐normal distribution. A graphic logarithmic transformation is de‐scribed which permits rapid calculation of approximate values for the mean, standard deviation, and coefficient of variation. Statistical parameters calculated by this method show good agreement with known physical conditions in the terranes studied and are precise enough for use as a mea‐sure of variability of quality of ground waters for national planning p

ISSN:0017-467X    

DOI:10.1111/j.1745-6584.1966.tb01609.x

出版商:Blackwell Publishing Ltd    

年代:1966

数据来源: WILEY

摘要:

AbstractThe States of Nebraska and Kansas are negotiating a compact for apportionment of the waters of the Big and Little Blue Rivers. So that the negotiating officials could allocate the water equitably, the amount of streamflow depletion caused by ground‐water withdrawals upgradient from the State line needed to be determined. At the request of the Nebraska officials, the U. S. Geological Survey constructed an electric analog model which could be used to determine the amount of streamflow depletion expected to occur in the next 60 years.The model simulates hydraulic conditions in an area of 7,400 square miles which includes the entire area drained by the Big and Little Blue Rivers in Nebraska. The trans‐missibility of the aquifer (Pleistocene in age) ranges from less than 1,000 to as much as 300,000 gallons per day per foot, and the storage coefficient averages about 0.20. The transmissibility values are based on examination of test‐ hole samples from more than 400 test holes in and adjacent to the basin.Analysis of the model indicates that predicted maximum ground‐water withdrawals between 1962 and 2022 will not deplete the base flow of the Big or Little Blue Rivers by more than 5

ISSN:0017-467X    

DOI:10.1111/j.1745-6584.1966.tb01610.x

出版商:Blackwell Publishing Ltd    

年代:1966

数据来源: WILEY

摘要:

AbstractThe consultant expects the driller to provide good data and competent performance. Exchanges of views associated with drilling and construction can prove to be mutually beneficial. Contacts between the consultants and the drillers have a tendency to upgrade the quality of the basic datacollected. These contacts may aid the driller in delivering full performance and thus improve the overall quality of thedrilling and construction he performs for the client. As a result, everybody associated with the water well industry‐drillers, consultants, and clients ‐ stands to gain by these contacts. It is hoped that these beneficial contacts within the water well industry will become even more common in years to come so we all can gain from one another's knowledge and experie

ISSN:0017-467X    

DOI:10.1111/j.1745-6584.1966.tb01611.x

出版商:Blackwell Publishing Ltd    

年代:1966

数据来源: WILEY

摘要:

AbstractPhotogeologic study has been useful in the location of ground‐water sources in the state ofSaoPaulo, Brazil, and could be important to the investigation of water resources in other areas.Until 1963, it was believed that large areas of the state were unsuited for the location of ground‐water wells (as in pre‐Devonian crystalline formations) and others weregenerally considered too hazardous (Paleozoic and Tertiary: sandstone lenses in shales). Since that time, when aerial photographs of the whole state became available, the authorhas verified an earlier hypothesis of his own that there are actually very few areas in the state which do not have suitable locations for water wells, and that photogeology is a most valuable method of prospecting.The water sources are parts of highly developed fault/ fracture systems which are identifiable on aerial photo‐graphs, at least in this warm humid climate with dry season. Over the fractures the rocks are deeply decomposed, the debris are removed in the rainy season, and existence of water in the dry season promotes higher and denser vegeta‐tion along aquiferous fractures, which usually are located in deep straight‐line valleys. Even where competent beds are overlain by more than 100 m of unconsolidated strata, many discontinuous nets of parallel straight‐line segments are detectable probably because all fractures are really faults with significant throw.To be most effective, the method requires stereoscopic study of areas having dimensions on the order of 10 × 10 km. The selection of locations for drilling should be sup‐ported by analyses of the dip of fracture planes (hade) and by other geological‐geophysical methods, especially by subsoil electrical res

ISSN:0017-467X    

DOI:10.1111/j.1745-6584.1966.tb01612.x

出版商:Blackwell Publishing Ltd    

年代:1966

数据来源: WILEY

摘要:

ABSTRACTIt is the purpose of this paper to call ro your attention the existence of the International Hydrogeologic Map Display and the International Legend for Hydrogeologic Maps, and to encourage those in the USA working in the water resources and associated fields to review these recommendations and forward their comments so that they may in turn be relayed to the next meeting of this international commit‐tee. It is requested that any maps following the legend be forwarded for addition to the committee's file and use in the Internationa] Display at the next General Assembly meeting of IUG

ISSN:0017-467X    

DOI:10.1111/j.1745-6584.1966.tb01613.x

出版商:Blackwell Publishing Ltd    

年代:1966

数据来源: WILEY

摘要:

AbstractA graduate program in hydrogeology is described, in which the field is defined as encompassing the whole range of processes operating in water and water‐mineral mixtures at and near the earth's surface. The interdisciplinary character of this training is insured by requiring both a minor from another department and course work in other sub‐disciplines of hydrogeology in addition to the one in which the thesis is carried out. The importance of nonscientific aspects of hydrogeology is recognized by allowing for minors in fields such as economics and business administrat

ISSN:0017-467X    

DOI:10.1111/j.1745-6584.1966.tb01614.x

出版商:Blackwell Publishing Ltd    

年代:1966

数据来源: WILEY

摘要:

ABSTRACTThe purpose of this paper is to stimulate additional interest in the hydrogeologic aspects of the International Hydrological Decade (IHD) program and to urge the full cooperation and participation of hydrogeologists in the research and educational activities of the Decade. The IHD, 1965–74, will strengthen the scientific base for water use and conservation, stimulate education and training in hydrology, and improve the ability of developing and developed countries alike to cope with their water resources problems. UNESCO provides an international intergovernmental umbrella and the Secretariat for IHD. More than 90 Member States of UNESCO are participating in IHD and a majority of these have established National Committees for IHD.The UNESCO/IHD program will consist primarily of activities of participating countries themselves, catalyzed, coordinated, and supplemented by international intergovern‐mental agencies and scientific associations. Activities of Member States of UNESCO include: collection of basic data through data analysis and applied hydrology; applied and basic research; continental and global water balances and the global hydrological cycle; establishment of hydrological networks and the development of technical competence; fundamental research; definition of principal hydrological features of countries such as precipitation, discharge of water, sediment and dissolved load, evapotranspiration, distribution of tritium in precipitation, surface and ground waters; experimental basin studies to provide insight on the interplay of environmental and hydrological parameters in a broad range of geological, climatic, and ecological conditions; distribution of water in the atmosphere, in lakes and rivers, underground, in permanent ice and snow and permafrost; studies of the rate at which water moves through the hydrologic cycle; use of orbiting satellites and remote sensing instruments for measuring phenomena in the atmosphere and at the Earth's surface and for relaying observational data; organization of egional advanced training and study courses and hydrological institutes; exchange of teams of experts, exchange of professors and research scientists; and organization of symposia and regional seminars.The US/IHD program focuses on the following five major objectives: (1) large‐scale balances of water and water‐borne material studies; (2) hydrological performance of river, lake, and ground‐water basin systems studies; (3) studies of specific hydrological processes and their variations in time, and improvement of methods and techniques; (4) education and training; and (5) services providing coordination and administration support. These objectives provide a framework within which the scientific and engineering community can contribute to IHD. A provisional US/IHD program statement identified, among others, the following hydrogeologic activities: estimation of ground‐water discharge to the sea, effects of variations in piezometric head on land subsidence, hydrology in limestone areas, radionuclide tracer studies, chemical behavior of ground water, and dispersion in moving ground water.Hydrogeologists are urged to submit proposals concerning activities for possible inclusion in the US/IHD program. The following seven criteria guide the formulation and inclusion of activities in the US/IHD program by the U. S. National Committee for IHD: (1) the activity is sufficiently fundamental or aimed at results so useful that it will interest all hydrologists; (2) the activity requires joint or coordinated work in two or more countries; (3) the activity concerns a problem whose solution and verification would be improved by work in two or more countries; (4) the activity concerns continental, hemispheric, or global phenomena or processes; (5) the activity requires action in international areas such as polar regions, international waters, and multi‐national basins; (6) the activity involves the hydrologic use of earth‐orbiting satellites; and (7) the activity involves intercountry exchange or visits of personnel (in some instances, the exchange or visit itself may be the main item of interest). Proposals may be of projects already in progress, for expansion or modification of on‐going projects, or for new work. Proposals may be submitted as contributions, requiring no financial aid from or through the IHD; for endorsement by IHD as an aid in obtaining financial aid elsewhere; or, when funds become available, as IHD projects receiving financial assistance from the IHD. Further information may be obtained from: U. S. Na‐tional Committee for the International Hydrological Decade, National Academy of Sciences, 2101 Constitution Avenue, N. W., Wash

ISSN:0017-467X    

DOI:10.1111/j.1745-6584.1966.tb01615.x

出版商:Blackwell Publishing Ltd    

年代:1966

数据来源: WILEY

ISSN:0017-467X    

DOI:10.1111/j.1745-6584.1966.tb01617.x

出版商:Blackwell Publishing Ltd    

年代:1966

数据来源: WILEY