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A portable, electromagnetic loop-coupling device has been built to locate points on the earth's surface over points in an underground cavity and to determine the depth to the cavity. This method presently requires both an underground and a surface...
1967-08-01
The reported high values of resistivity in the near surface zones in semi-arid regions on the island of Hawaii motivated research into the feasibility of using radio waves to sound the depth to the ground water table. Field tests using a 35 MHz...
1967-08-01
Seismic recording and playback techniques and equipment are being developed for use in mapping small scale geologic structures of significance in controlling the movement of ground water. High-frequency seismic waves produced by weight-dropping,...
1967-08-01
From June through August 1967, a thorough investigation was made of the presence and numbers of coliform bacteria, fecal streptococci (enterococci), and bacteria capable of growing on peptone-seawater agar at 28°. Six regularly monitored stations...
1967-12-01
The marine sub-tropic climate of Hawaii is particularly suited to the use of semi-contained hydraulic lysimeters. Field experiences in the use of these lysimeters reveal a number of problems among which were factors related to the unusual tropical...
1967-08-01
The waters of the streams in the South Kohala district of the island of Hawaii have long been noted for their extremely high color and at times a distinct peaty taste. Early attempts to treat this water have led to the conclusion that the color...
1967-08-01
Basic hydrological data including rainfall, runoff, historical flood, watershed characteristics, soil type, and land use of Hawaiian small watersheds on Oahu have been compiled and analyzed. Frequency analysis for annual peak discharge was made...
1967-12-01
The source of most of Oahu's domestic water supply is from ground water occurring in the permeable materials of volcanic rock. Movement of the ground water is intrinsically through thin cracks in basaltic lavas. This project studied passage of an...
1967-08-01
Two remote sensing techniques of measuring offshore ground-water spring discharge that have been studied are: (i) multispectral photography, and (ii) infrared thermometry. During the summer of 1967, exposure factors for filter-film-camera...
1967-08-01
On the basis of hydrology, geology, soils, and water quality, potential ground-water development along the coastal area of the Kahua area in the North Kohala District appears unfavorable for large supplies of fresh water. Low rainfall and the...
1968-04-01
U.S. Department of the Interior Grant/Contract No. 14-01-0001-1079; A-001-HI
1968-06-01
Pertinent to the field of the water resources of the Hawaiian Islands there have been several previous bibliographies, but they are mostly out of date, and there are great gaps among their coverages. The need for a comprehensive, up-to-date,...
1971-07-01
Artificial recharge for the purpose of replenishing the fresh ground-water body in Hawaii has been deliberately practiced in a few areas for many years, and has been recognized as incidental to other practices, principally irrigation, in many...
1971-11-01
The governmental structure of Hawaii through which its water-related agencies operate is a relatively simple one as compared to that of most other mainland states. A highly centralized state government dominates over one layer of four county-level...
1972-05-01
Neutron count data for calibration purposes were collected by neutron logging in 4 boreholes, and porosity data were determined from photo logs run on the same 4 boreholes. A neutron count-porosity calibration curve was constructed and was found...
1974-08-01
Heavy metals have long been known to exert toxic effects upon plants and animals at all trophic levels. Through the use of water as a cleansing and transporting agent, various types and forms of metals find their way into the sewerage system. To...
1974-09-01
An investigation of recycling sewage effluent by irrigation under Hawaiian conditions is being conducted in pilot field studies near Mililani Town in central Oahu under the sponsorship of the Board of Water Supply and the Division of Sewers, City...
1974-11-01
Planning an optimal system of activities for generating economic goods and services within an existing natural resource capacity is a difficult problem to solve. A mathematical programming model with the capacity to check multiple resource demand...
1974-07-01
This study investigated conditions contributing to cesspool failure and followed selected parameters to measure the degree of treatment afforded sewage in cesspool disposal. This laboratory study utilized bench scale soil lysimeters and two basic...
1966-08-01
A theoretical equation was adapted and modified for a water-table aquifer to relate freshwater flow to the sea, geometry of the fresh water-sea water interface, and aquifer characteristics under dynamic equilibrium. Verification was obtained in...
1967-02-01
Two deep wells, one at Puuloa and the other at Ewa Beach in the Pearl Harbor area were drilled through the thick sedimentary gap into Koolau basalt, and have been readied for multiple-zone recording of water levels and water quality. Plastic pipes...
1967-03-01
The gravity method has been applied in three wells in Hawaii to estimate density and porosity logs. The wells are the Schofield shaft on the island of Oahu, the Kihei #3 shaft on the island of Maui and the Pahala shaft on the island of Hawaii. The...
1971-02-01
A two-zone theoretical model, consisting of a cylindrical borehole filled with drilling mud and surrounded by homogeneous, isotropic rock, was studied to aid interpretation of electrical resistivity logs. Apparent resistivities are numerically...
1971-03-01
A new geophysical technique for the remote measurement of the electromagnetic properties of natural surfaces was investigated. Theoretical and laboratory work has produced evidence for the validity of the use of ultra-high frequency radio...
1971-05-01
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