WorldCat Identities


Works: 1,371 works in 1,436 publications in 1 language and 1,771 library holdings
Publication Timeline
Wastewater applications in forest ecosystems( Book )

1 edition published in 1982 in English and held by 6 WorldCat member libraries worldwide

Under proper design and management, a forest ecosystem in the central United States should renovate municipal wastewater as long or longer than conventional agricultural systems, especially when design limitations are hydraulic loading rate, heavy metals, P and N. Forest systems require smaller buffer zones than agricultural systems and lower sprinkler pressures. Immature forests are better wastewater renovators than mature forests. (Author)
Acoustic emissions from polycrystalline ice by W. F St. Lawrence( Book )

1 edition published in 1982 in English and held by 6 WorldCat member libraries worldwide

The acoustic emission response from fine-grained polycrystalline ice subjected to constant compressive loads was examined. A number of tests were conducted with the nominal stress ranging from 0.8 to 3.67 MPa at a temperature of -5 C. The acoustic emission response was recorded and the data are presented with respect to time and strain. The source of acoustic emissions in ice is considered in terms of the formation of both microfractures and visible fractures that develop without catastrophic failure of the ice. A model to describe the acoustic emission response is developed. (Author)
Bibliography on snow, ice and permafrost with abstracts( Book )

7 editions published between 1954 and 1958 in English and held by 6 WorldCat member libraries worldwide

The primary purpose of th bibliography is to aid USA SIPRE and others conducting research on scientific and engineering aspects of snow, ice, and perennially and seasonally frozen ground. Included are such diverse topics as airplane icing, the characteristics of sea ice, various aspects of snow removal and ice control, cold regions engineering, and field investigations of snow cover, land ice, and permafrost. Each entry contains, in addition to an informative abstract, the necessary bibliographic information, a code designating a library possessing a copy of the original (CF. P. IV), and its assigned call number. Universal Decimal Classification nu bers are taken from the schedules prepared by the Scott Polar Research Institute, Cambridge, England. (Author)
Conduction phase change beneath insulated heated or cooled structures by Virgil J Lunardini( Book )

1 edition published in 1982 in English and held by 5 WorldCat member libraries worldwide

The problem of thawing beneath heated structures on permafrost (or cooled structures in non-permafrost zones) must be addressed if safe engineering designs are to be conceived. In general, there are no exact solutions to the problem of conduction heat transfer with phase change for practical geometries. The quasi-steady approximation is used here to solve the conductive heat transfer problem with phase change for insulated geometries including infinite strips, rectangular buildings, circular storage tanks, and buried pipes. Analytical solutions are presented and graphed for a range of parameters of practical importance. (Author)
Deceleration of projectiles in snow by Donald G Albert( Book )

1 edition published in 1982 in English and held by 5 WorldCat member libraries worldwide

Instrumented M374 projectiles were launched into snow, nylon, and Styrofoam targets using a 10.7-m radius centrifuge. For snow of 410-kg/cu m 3 density, the 3.1-kg test projectile experienced decelerations of approximately 220, 400, and 550 m/sq s (at a depth of 0.1 m) for initial impact velocities of 15,30 and 46 m/s respectively. These values disagree with values predicted from a simple hydrodynamic drag force approximation. The decelerations measured for snow targets were always greater than those measured for nylon shaving targets (of density 120 kg/cu m) indicating that this material is not a good analog for snow of the density used in these tests. (Author)
Shore ice ride-up and pile-up features : Part I: Alaska's Beaufort Sea coast by Austin Kovacs( Book )

2 editions published between 1983 and 1984 in English and held by 4 WorldCat member libraries worldwide

Observations of shore ice pile-up and ride-up along the Alaska Beaufort Sea coast in 1983 and 1984 are presented. New information on historical accounts of onshore ice movement, uncovered since publication of Part I in this series, is reported. An account is given of ice overtopping a concrete caisson exploration island in the Canadian Beaufort Sea. Part I covered the winters of 1979-80, 1980-81 and 1981-82. Part II presents observations made in early May and late July 1983 and mid-May 1984
Crystalline structure of urea ice sheets used in modeling experiments in the CRREL test basin by A. J Gow( Book )

1 edition published in 1984 in English and held by 4 WorldCat member libraries worldwide

This report describes the growth characteristics and crystalline textures of urea ice sheets which are now used extensively in the Cold Regions Research and Engineering Lab. (CRREL) test basin for modeling sea ice. The aims of the report are to describe the different kinds of crystalline texture encountered in urea ice sheets and to show that even small variations in texture can drastically influence the mechanical behavior of urea ice sheets. Standard petrographic techniques for studying microstructure in thin sections were used on 24 urea ice sheets. These investigations entailed observations of the crystalline texture of the ice (including details of the subgrain structure), grain size measurements, and studies of the nature and extent of urea entrapment and drainage patterns in the ice. Increased knowledge of the factors controlling the crystalline characteristics of urea ice sheets has progressed to the point where test basin researchers at CRREL are now able to fabricate ice sheets with prescribed structures leading to predictable mechanical properties. Originators supplied keywords include: Sea ice, and Mechanical properties
A statistical evaluation of soil and climatic parameters affecting the change in pavement deflection during thawing of subgrades by Edwin J Chamberlain( Book )

1 edition published in 1981 in English and held by 4 WorldCat member libraries worldwide

This report analyzes the results of a field study previously reported by Scrivner et al. (1969) for the National Cooperative Highway Research Program. These authors studied the seasonal pavement deflection characteristics of 24 test sites on roads in service in regions with freezing indexes ranging from 100 F-days to 2100 F-days. They used the Dynaflect cyclic pavement loading device to determine the pavement system response. Of specific interest to my analysis was the increased pavement deflection after freezing and thawing and the time to recovery of normal deflection characteristics. These characteristics were related to soil and climatic factors using statistical techniques. The most significant observations of this statistical analysis are: (1) that the freezing index is not a significant parameter in determining the percent increase in pavement deflection during thawing, and (2) that the recovery time is inversely proportional to the depth of freezing. As was expected, the most significant variable affecting the increase in pavement deflection was the frost susceptibility classification. This observation reinforces the necessity for careful selection of soil materials used in pavement systems. (Author)
Atmospheric icing on communication masts in New England by Nathan D Mulherin( Book )

1 edition published in 1986 in English and held by 4 WorldCat member libraries worldwide

Rime icing and freezing precipitation are of concern to the radio and television broadcasting industry. This report contains the results of a study seeking to document the severity and extent of transmitter tower icing and related problems in the northeastern United States. Information was obtained via mail questionnaire and telephone interviews with 85 station owners and engineers concerning 118 different stations. Results show that television and FM broadcasters are seriously impacted by tower icing; however, AM operators are usually not affected by expected New England icing levels. Combined annual costs for icing protection and icing-related repairs averaged $121, $402 and $3066 for AM, FM and TV stations respectively. None of the AM stations polled employ any icing protection in the three northern states averaged 80%, indicating a significant concern for icing in that region. In contrast, the percentage of FM stations with icing protection was 63.5% for the southern New England states. The usage of guyed versus non-guyed towers was a poor indicator of icing costs. However, the factors of increasing mast height and mast top elevation are significant to increasing costs
Aerostat icing problems by Ben Hanamoto( Book )

1 edition published in 1983 in English and held by 4 WorldCat member libraries worldwide

This report describes laboratory tests to determine the effectiveness of a copolymer coating on a balloon to minimize ice build-up problems when operating in sleet, freezing rain or other ice-forming conditions. Methods for deicing the surface after an ice cover form are also described. A small-scale balloon was used for the laboratory tests. A full-scale prototype was also partially coated with the copolymer to test its effectiveness as an icing control measure. (Author)
Secondary Stress within the Structural Frame of DYE-3: 1978-1983( Book )

1 edition published in 1984 in English and held by 4 WorldCat member libraries worldwide

DEW line ice cap station DYE-3 was moved sideways 210 ft and placed on a new foundation in 1977, then raised 27 ft in 1978. Secondary forces within the structural steel framework were measured in 1978, 1981, 1982, and 1983. The overall level of secondary stresses had increased but through 1983 the columns were still within their stress limitations. Some localized overstress is expected in 1984. The concept of using above-surface trusses to resist wind loads and brace the eight columns has proven to be satisfactory. It has eliminated the subsurface enclosures used in the past to protect subsurface trusses, enclosures that proved to be the structural weak link of the original facility; their elimination has resulted in a stronger facility that is easier to maintain. The measurements and findings of this program were used in the development of the design to extend the life of DYE-3 to be implemented in 1984. That work should reduce the level of secondary stresses in the frame
Impact of dredging on water quality of Kewaunee Harbor, Wisconsin by I. K Iskandar( Book )

1 edition published in 1984 in English and held by 4 WorldCat member libraries worldwide

Six sediments and four water samples were collected from Kewaunee, Wisconsin, in 1981, prior to dredging of this Lake Michigan harbor. A modified elutrate test was used to estimate potential impact on water quality upon harbor dredging and disposal of the sediments in a confined facility. The modification of the test included a comparison between containment release under aerated vs unaerated conditions and filtered vs unfiltered elutrates. Statistical analysis showed that the differences in the chemical characteristics between the filtered and unfiltered samples were significant for soluble reactive P and all the tested metals except Cu. Significant but low amounts of heavy metals (Cd, Pb, Zn, Ni, Fe, Mn) and soluble reactive P will be released to the water if the effluent is not filtered. Under aerated conditions, COD in both the filtered and unfiltered samples was higher than under unaerated conditions. In contrast, total organic carbon was much higher under the unaerated condition than under aerated conditions. The study concluded that sediment and contaminant releases from the confined disposal facility (CDF) to the harbor water were less than those from the Kewaunee River input. Also, retention of effluent in the CDF for about four days decreased the suspended solids in the effluent to about 40 to 50 mg/L, which is similar to the concentration in the lake water. The use of sand filters should not be for routine operation but rather for emergency cases when there is not enough time for effluent retention in this CDF
New England mountain icing climatology by Charles C Ryerson( Book )

1 edition published in 1988 in English and held by 4 WorldCat member libraries worldwide

Statistics and weather maps are used to compare the atmospheric icing climatology of two New England mountains: Mount Mansfield in northern Vermont and Mount Washington in New Hampshire. Atmospheric icing, as measured with Rosemount ice detectors, is twice as frequent on Mount Washington, with about 12-20 times greater intensities and 25-50 times more accretion. Periods between icing events average 35-45 hours on the two peaks. Most Mount Mansfield icing events are of low intensity. Plots indicate the return probabilities of ice events by length, intensity and accretion magnitude. Approximately half of all severe icing on the two peaks occurs during and immediately after cold front passages. Icing is most intense when lows are about 450 km to the east of the mountains. High-pressure centers are never closer than about 450 km during intense icing. Prolonged accretion periods occur when coastal and inland storms merge or follow closely. (fr)
The Effectiveness and Influences of the Navigation Ice Booms on the St. Marys River( Book )

1 edition published in 1984 in English and held by 4 WorldCat member libraries worldwide

Ice problems developed in the Sault Ste. Marie, Michigan, portion of the St. Marys River because of winter navigation Passing ships and natural influences moved ice from Soo Harbor into Little Rapids Cut in sufficient quantities to jam, cause high water in the harbor, and prevent further ship passage. After physical model and engineering studies, two ice booms with a total span of 1375 ft (419 m) with a 250-ft (76-m) navigation opening between were installed at the head of Little Rapids Cut in 1975. A modest field study program on the booms was conducted for the ensuring four winters to determine ice and boom interaction and the effects of ship passages on the system. Forces on some anchors were recorded and supplemental data were taken by local personnel. Several reports have been written about the booms' early operations. This paper presents four-year summary of the main effects of the booms on ice and ship interaction and vice versa. Throughout the four winter seasons, the small quantities of ice lost over and between the booms were manageable. Ships usually passed through the boom without influencing the boom force levels, but at time they brought about large changes. One boom needed strengthening, and artificial islands were added for upstream ice stability. Coast Guard icebreakers were also a necessary part of winter navigation in this area
Frost Susceptibility of Soil, Review of Index Tests( Book )

2 editions published in 1981 in English and held by 3 WorldCat member libraries worldwide

Methods of determining the frost susceptibility of soils are identified and presented in this report. More than one hundred criteria were found, the most common based on particle size caharacteristics. These particle size criteria are frequently augmented by information such as grain size distribution, uniformity coefficients and Atterberg limits. Information on permeability, mineralogy and soil classification has also been used. More complex methods requiring pore size distribution, moisture-tension, hydraulic-conductivity, heave-stress, and frost-heave tests have also been proposed. However, none has proven to be the universal test for determining the frost susceptibility of soils. Based on this survey, four methods are proposed for further study. They are the U.S. Army Corps of Engineers Frost Susceptibility Classification System, the moisture-tension hydraulic-conductivity test, a new frost-heave test, and the CBR-after-thaw test. (Author)
Ice effects on hydraulics and fish habitat by George D Ashton( Book )

2 editions published in 1990 in English and held by 3 WorldCat member libraries worldwide

In the temperature zones of the world the formation of ice in streams and rivers may have significant effects on their water depths and velocities, even when the stream discharge does not change. Velocity and water depth are among the attributes that constitute the habitat of the aquatic species that reside in the streams and rivers. Thus, to evaluate the habitat it is important to be able to characterize the effects of ice on velocity and depth. In this report I summarize the effects of river ice on hydraulic behavior, with examples meant to provide guidance in evaluating what habitats may be expected in winter comparison with non-ice conditions of the same stream. While river ice formations may be complex at the small scale of tens of meters or less, on a larger scale they are often sufficiently uniform to enable reasonable comparisons of depth and velocities with and without ice present. The emphasis here is on shallow rivers, such as the Platte River in Nebraska. The Platte is subjected to many competing demands for its flow, among which are the demands for habitat. A concern for the required winter flows was the motivation for this study. (jes)
Roof moisture survey - U.S. Military Academy : prepared for U.S. Military Academy by C. J Korhonen( Book )

1 edition published in 1979 in English and held by 3 WorldCat member libraries worldwide

The roofs and upper story walls of buildings 745E, 752, and 756 at the U.S. Military Academy, West Point, New York, were surveyed with a hand-held infrared camera to locate sources of reported wall leaks. An electrical resistance probe was used to determine the relative level of moisture in wall components. Several 3-in.-diam core samples of each roof were obtained to verify suspected moisture conditions and to examine the roof membrane in cross section. Wet areas on each roof were outlined with white spray paint. Wall leaks are believed to be caused by wind-driven rain entering the parapet walls in locations where the decorative glaze-coat has spalled off. Recommendations for maintenance of these buildings are based on information derived from the infrared survey, electric resistance readings, core samples and visual examinations. (Author)
Optimization Model for Land Treatment Planning, Design and Operation. Part 2. Case Study( Book )

1 edition published in 1983 in English and held by 3 WorldCat member libraries worldwide

A procedure to evaluate design and operating options for slow-rate land treatment systems is demonstrated. The nonlinear optimization model LTMOD is used to generate optimal monthly operating regimes (effluent application patterns) and to define optimal design configurations (combinations of storage capacity and irrigation area). The model is applied to a hypothetical slow-rate land treatment system in a cool, humid area with a forage crop, where the operation and design of the system is constrained by the potential for nitrogen renovation in the storage facility and in the soil-corp system. The cost properties over the range of optimal design alternatives are examined to deduce some general cost characteristics of slow-rate systems ranging from 0.5 to 10 mgd. (Author)
Technical assessment of Maglev system concepts by James Lever( Book )

3 editions published in 1998 in English and held by 2 WorldCat member libraries worldwide

The Government Maglev System Assessment Team operated from 1991-1993 at part of the National Maglev Initiative. We assessed the technical viability of four U.S. Maglev system concepts using the French TGV high speed train and the German TR07 Maglev system as assessment baselines. Maglev in general offers advantages that include high speed potential, excellent system control, high capacity, low energy consumption, low maintenance, modest land requirements, low operating costs, and ability to meet a variety of transportation missions. Further, the U.S. Maglev concepts could provide superior performance to TR07 for similar cost or similar performance for less cost. They also could achieve both lower trip times and lower energy consumption along typical U.S. routes. These advantages result generally from the use of large gap magnetic suspensions, more powerful linear synchronous motors and tilting vehicles. Innovative concepts for motors, guideways suspension and superconducting magnets all contribute to a potential for superior long term performance of U.S. Maglev systems compared with TGV and TR07
International Conference on Snow Hydrology: The Integration of Physical, Chemical, and Biological Systems Held in Brownsville, Vermont on 6-9 October 1998( Book )

2 editions published in 1998 in English and held by 2 WorldCat member libraries worldwide

This report comprises the abstracts of all papers presented at a special four-day conference on snow hydrology held in Vermont, U.S.A., 6-9 October 1998. The purpose of this conference was to provide a forum for sharing new knowledge on snow-cover properties and processes, chemical processes in the seasonal snow cover, biotic interactions with the seasonal snow cover, distributed snowmelt models, and scaling problems in snow hydrology To encourage exchange between disciplines, papers were sought that addressed the relation between processes-physical, chemical, and biological-and the integration and distribution of these processes over different spatial and temporal scales
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