From measurements of thermal and electrical conductivities of 64 ocean sediment samples obtained from piston cores taken off the Oregon Coast, and from 37 water-saturated sandstone samples analyzed by Zierfuss and Van der Vliet (1956), as well as 51 thermal conductivities and water contents of ocean sediments analyzed by Ratcliffe (1960), this research shows that a useful relationship can be obtained giving thermal conductivity when electrical conductivity is known. Analysis of the data was made using theoretical concepts which have been known for many years to relate thermal and electrical conductivity to porosity. The results of this research may make possible a convenient determination of in situ thermal conductivity that would give the average conductivity in materials containing large variations in conductivity. / Graduation date: 1966

Sediments on the inner portion of the Oregon continental shelf consist of clean, well-sorted, detrital sand. This sand has an average median diameter of 2.53Φ (. 173 mm) and is both positively and negatively skewed. Deposits with median diameters in the coarse sand and gravel classes occur at depths of 20 to 40 fathoms and probably represent ancient beach or fluviatile deposits formed during lower stands of sea level. The outer shelf and upper slope are covered by poorly sorted sediments with median diameters in the fine sand to fine silt classes. Mean diameters of the sediments are almost always smaller than their median diameters and the sediments are positively skewed. The heavy mineral assemblages are dominated by the amphibole and pyroxene groups and the opaque-garnet association. Pyroxenes are most abundant in the coarser-grained sediments of the inner shelf and decrease in abundance offshore. Amphiboles are most abundant in the finer-grained sediments of the outer shelf and upper slope. Highest concentrations of the opaque-garnet association also are found in the inshore samples. Sediments of the continental shelf are derived from two principal sources, rivers and erosion of coastal terrace deposits. Rivers are probably contributing only fine-grained material to the shelf as much of the coarser fluviatile material is thought to be trapped in the estuaries. The terrace deposits are actively being eroded and are thought to contribute about 21,000,000 cubic feet (.00013 cubic miles) of sediment to the continental shelf annually. Evidence suggests that much of the inner-shelf sand is probably a relict transgressive sheet sand that was deposited during the last rise in sea level. Most of the deposition of the modern sand on the shelf has been confined to the inner portion of the inner shelf. Finer-grained sediments have been deposited on the outer shelf and upper slope. Characteristics of the sediments on the present continental shelves may be useful in identifying continental shelf deposits in the geologic column. / Graduation date: 1966

Graduation date: 1987

Graduation date: 1966

Typescript. / Bibliography: leaves 163-174. / xiv, 174 l illus., maps, graphs, tables

This thesis addressed the Late Post-classic (A.D. 1200 - 1500) Nahua-Pipil of the central Pacific coast of Guatemala. It evaluated archaeological settlement plan data and ceramics in association with regional geography, and ethnohistorical accounts in conjunction with GIS tools for their analysis. The goal is to reconstruct Nahua-Pipil sociopolitical organization, testing the hypothesis that it was based on the Nahua altepetl system.

A set of closely-spaced tide-gauge records of the 1960 Chilean tsunami was obtained on the Pacific Coast of Canada. The object of this study was to glean as much as possible of the information contained in these records. The investigation was carried on by power spectrum analysis, cross-spectrum analysis and visual inspection of the tide-gauge records. An interpretation is offered which invokes the mechanisms of wave buildup due to shoaling, clapotis effect, resonance, viscous dissipation, and shift of energy between wave and current by Reynolds stresses to explain the form of the power spectra. In the appendices are given a formula for the response characteristics of stilling wells, an application of an electrical engineering result for the response characteristics of pressure gauges, an elucidation of the conversion of power estimates to the positive frequency range, an interpretation of the phase difference from cross-spectra, and a formula for prewhitening the covariances before performing the Fourier transform in the spectral analysis. / Science, Faculty of / Physics and Astronomy, Department of / Graduate

For Canadians the Second World War traditionally evokes images of the invasion of Normandy, the Falaise Gap, and the ill-fated raid on Dieppe. Over the years Canadians who served overseas have been recognized but, at the same time, soldiers who served on the home front have been overlooked. This is because many of Canada's home defence soldiers were conscripted under the National Resources Mobilization Act, and were unwilling to go overseas. Thousands of Canadians, however, were denied entry into the regular forces because they were too old, too young, or classified as medically unfit. In British Columbia during the Second World War, these men were given the opportunity to enlist in a unique home guard unit called the Pacific Coast Militia Rangers (P.C.M.R.). The Pacific Coast Militia Rangers were organized in response to public pressure, and because existing coastal defences were inadequate. Composed of unpaid volunteers trained in guerilla tactics, the Pacific Coast Militia Rangers were a home defence force peculiar to British Columbia. The Rangers were not a typical military organization. Rather, they were a distinctively North American fighting force in the tradition of previous Ranger formations. A sense of historical tradition was evident in the designation of "Rangers" for British Columbia's Second World War guerilla home defence volunteers. In North America, since the 1700s, men born in and acquainted with the hinterland-frontiersmen, hunters, cowboys, and trappers proficient in the use of firearms-have been formed into irregular Ranger units in times of emergency. There is a long list of these North American Ranger organizations: Rogers' Rangers in the French and Indian War; Butler's Loyalist Rangers, the East Florida Rangers, and the Queen's Rangers in the American Revolution; the Frontier Battalion of the Texas Rangers in the revolution against Mexican authority; Mosby's Rangers in the U.S. Civil War; and the Rocky Mountain Rangers in the Northwest Rebellion. The Pacific Coast Militia Rangers were the twentieth century revival of this Ranger tradition. Throughout history, all Ranger units have used the same tactics: they employed guerilla warfare with an emphasis on surprise attacks, they operated in small units which were highly mobile, and they focussed on rifle training. A lack of formal military discipline has also been characteristic of all Ranger formations. The Pacific Coast Militia Rangers, then, were not an innovation in the Canadian military experience. They were part of a distinct military tradition of irregular troops adapted to suit North American frontier conditions. The Pacific Coast Militia Rangers reflected the character, fears, and internal conflicts of British Columbia's society. British Columbia was a predominantly white community and the P.C.M.R. mirrored the widespread white ethnic prejudices in the province. Ethnic groups were largely excluded from the Rangers and Native Indians, who were accepted as valuable recruits, were treated in a paternalistic manner. Militant trade unionism has been an important facet of B.C. history, and trade unionists were prominent in the Pacific Coast Militia Rangers. Trade unions fully supported the P.C.M.R. and Ranger membership was dominated by the working class. The labour movement's influence in the P.C.M.R. can be seen in the anxiety over the possible employment of Ranger units to break strikes. The role of war veterans in the P.C.M.R. also reflected the composition of the larger society. First World War veterans were a well-defined group in B.C. society, and their values and outlook were revealed through their Ranger participation. The veterans' zeal and rivalry with younger Rangers indicates that their patriotism was, at times, misguided, but it was rooted in a personal need to play a visible role in the war effort. The P.C.M.R. operated in a democratic manner: if the commander of a Ranger company was disliked by his men, he could be voted out of his position. Similarly, if Rangers disagreed with directives from P.C.M.E. headquarters they were quick to express their displeasure and threatened resignation. This would have been impossible in the regular army, but in the P.C.M.R.-composed of citizen-soldiers-it was a commonplace pattern. The social equality between ranks, and the egalitarian way in which the P.C.M.R. operated expressed the New World frontier values of British Columbia in the 1940s. The wartime fears and phobias of British Columbians showed in the actions of the Pacific Coast Militia Rangers. Life in British Columbia during the early years of the Second World War was, for the most part, as secure as life in other regions of Canada. This was changed, however, with the bombing of Pearl Harbor on 7 December 1941. The aggressiveness of Japan and the stunning success of her war machine, caused panic in the Pacific Coast province about the vulnerability of B.C. to an attack. In addition, the war sharpened the already existing white racial animosity against the Japanese, and _ provided a socially acceptable outlet for its expression. White British Columbia has had a history of fear of Asians and, subsequently, anti-Orientalism has been a current in the province's culture. In much the same way that anti-Japanese sentiment forced the federal government to intern and evacuate British Columbia's Japanese population, so too did public outcry prompt the formation of local home guard units. These two problems-the defence of British Columbia and anti-Japanese sentiment-became manifest in the history of the Pacific Coast Militia Rangers. From the Dominion government's viewpoint, the P.C.M.R. was a valuable organization. The Rangers provided military protection at a low cost, but they also comforted a frightened population which demanded protection from a Japanese invasion. It will be argued here that while the main purpose of the P.C.M.R. was home defence, the organization became much more than that to both the government and the people of British Columbia. Quite apart from its defence role, the P.C.M.R. provided reassurance, sustained the morale of a population at war, and acted as a means to indoctrinate civilians with military propaganda. / Arts, Faculty of / History, Department of / Graduate

Grain is the single most important export commodity shipped through four important Canadian ports on the Pacific Coast. Recent rapid growth in these exports have strained present facilities close to capacity. Therefore the necessity has arisen to study the problem of future requirements for grain handling facilities in British Columbia. Furthermore the over-all development of British Columbia ports has been widely discussed in recent years and because grain is such an important export, the problem of port development requires specific study of grain handling facilities. Investigation of future grain handling requirements relied on both library and field sources. Field work, mainly in the form of interviews with people in port administration and grain handling and selling were especially useful in gaining first-hand knowledge of the actual problems of grain exporting. Facts and opinions gained from field work were also invaluable to interpretation of a large mass of statistics that were available from various library sources. The results of the research have led to several conclusions. The most important is that the Pacific Coast of Canada requires new grain handling facilities in the near future. In addition improvements in handling are possible within existing facilities and throughout the extensive system of grain gathering which begins on the farms, hundreds of miles from the export point. In addition to the above findings there are several important secondary conclusions. First, the markets for grain are likely to continue growing in the foreseeable future. Because the markets of greatest growth are near the Pacific Ocean, Canada's West Coast ports are well situated to serve them. Second, the United States Pacific ports are also well situated to provide direct competition with Canada. If and when this competition becomes more direct, Canada will require the best facilities to keep its customers. Third, Canadian ports have definite advantages to ship operators over the United States ports in the form of lower charges for port use, but maintenance of efficiency in Canadian ports is essential to maintaining this advantage. Finally, the main Canadian Pacific ports are physically suitable for the expansion of grain handling facilities. / Business, Sauder School of / Graduate

Early life stages of many marine and diadromous fish species use sandy beach surf zones, which occur along >50% of the world's marine coastlines. This extensive habitat can provide juvenile fishes with an abundant supply of potential prey and the ability to hide from predators in its shallow turbid waters. Chinook salmon is an anadromous species that migrates to the ocean during their first (subyearlings) or second (yearlings) year of life. The majority of subyearlings reside in estuaries during their first summer season; however, a small number of juveniles also use surf zones. Early marine residence is considered a critical period for Chinook salmon due to high mortality rates; however the role of surf zones in Chinook salmon life history is unclear. Therefore, I determined the distribution of juvenile Chinook salmon on beaches of the eastern North Pacific, compared the migration and growth patterns observed in surf zones and estuaries, identified the factors that accounted for variation in juvenile surf zone catch, explored the factors that influence growth rate variation in surf zones and estuaries, and modeled how growth rates in these coastal habitats may vary in the near future with predicted changes in climate. The majority (94%) of juveniles were caught in surf zones adjacent to estuaries with trough areas, which are beach sections where sand moved by currents and waves produce a trench-like shape. Surf zone fish were collected in significantly lower numbers than estuarine juveniles but entered brackish/ocean waters at similar sizes. Juveniles in surf zones consumed similar organisms (gammarid amphipods, crustacean larvae and insects) as in estuaries. Furthermore, stomach fullness indices (average = 2% of body weight) and growth rates (average = 0.4 mm day�����) were similar in surf zones and estuaries. At one surf zone, juvenile catch was positively correlated to short-term specific growth rates (14 days prior to capture). A bioenergetics modeling approach indicated that given current conditions, consumption rates accounted for more of the variation in growth than prey energetic content and temperature. Climate models predict future increases in fresh water temperature (1.5 to 5.8��C), sea surface temperature (1.2��C) and wave height (0.75 m) that could influence estuarine and surf zone use. Therefore, I developed a local mixing model based on these predictions to estimate future surf zone and estuarine water temperatures in two of the watersheds studied. Based on these temperature projections and the bioenergetics model, I predicted how juvenile specific growth rates would vary in both habitats. I determined that increases in water temperature in both habitats would reduce specific growth rates by 9 to 40% in surf zones and estuaries if diet composition and consumption rates remain similar to present conditions. To compensate for the decline in growth, juveniles may increase their consumption rates or consume more energetically rich prey, if available. If they are not able to compensate, their size at the end of the season may be reduced, which could reduce their overall survival. These results confirm that a small number of suyearling Chinook salmon use sandy beach surf zones, mostly adjacent to estuary mouths, where they experience growth conditions comparable to estuaries. My findings indicate that, in certain situations, juvenile Chinook salmon surf zone use can be influenced by surf zone growth conditions, while variation in growth rates are themselves most strongly influenced by variation in consumption rates in surf zones and estuaries. Predicted changes in coastal western North American climate will likely modify juvenile growth conditions in the next 50 years, and potentially reduce overall survival. Additional insights into the potential impacts of climate change on juvenile salmon will require estimates of changes in the composition, energetic quality and abundance of prey communities inhabiting coastal environments. / Graduation date: 2013