Extension of the Superior–Churchill boundary zone into southern Canada

1979 ◽  
Vol 16 (9) ◽  
pp. 1691-1701 ◽  
Author(s):  
A. G. Green ◽  
G. L. Cumming ◽  
D. Cedarwell

A regional magnetic map for southwestern Manitoba and southeastern Saskatchewan (areas not covered by the Federal–Provincial aeromagnetic maps) has been compiled. After a review of the geological and geophysical characteristics of the Superior–Churchill boundary zone in northern Manitoba, the new compilation magnetic map was used as a guide for tracing the boundary zone southwards to the Canada–U.S.A. border.By comparing the patterns on the new magnetic map with those on the neighbouring Federal–Provincial aeromagnetic maps, the major east–west trending crustal belts in the Superior Province have been extended farther west than was previously possible. In addition, a major granite/greenstone terrain, which extends in a southerly direction from a region near Flin Flon to the Canada–U.S.A. border, has been delineated in the Churchill Province. To the west of this granite/greenstone terrain, in central Saskatchewan, there is an extensive region of low magnetic relief, similar to that observed across the Kisseynew gneiss belt in northern Manitoba.


1980 ◽  
Vol 17 (5) ◽  
pp. 617-632 ◽  
Author(s):  
A. G. Green ◽  
O. G. Stephenson ◽  
G. D. Mann ◽  
E. R. Kanasewich ◽  
G. L. Cumming ◽  
...  

Three seismic surveying techniques have been employed in a study of the Superior–Churchill boundary zone in southwestern Manitoba and southeastern Saskatchewan. Two reversed refraction – wide angle reflection profiles, one north–south within the Superior tectonic province and one east–west traversing part of the Superior tectonic province, the boundary zone, and part of the Churchill tectonic province, were used to obtain information on the gross velocity structure of the crust over a large region. Preliminary results from these surveys suggest that the crust beneath the north–south profile is typical of previously published crustal models of the western Superior Province, while the crust beneath the east–west profile is similar to that reported for the Churchill Province in eastern Alberta and western Saskatchewan. Generally, the upper and middle crustal sections in the two tectonic provinces are quite similar, while the lower crust in the Churchill Province has a distinct ~7 km/s layer that is not observed in this part of the Superior Province. In addition, there is a marked thickening of the crust within the boundary zone from ~41 km in the Superior Province to ~46 km in the Churchill Province.A 72 km length of fourfold common reflection point coverage was collected in order to determine the fine structure of the crust over a relatively small region. Reliable stacking velocities that may be used for future processing of the common reflection point data were obtained from an expanding spread reflection survey. Various data processing techniques, including common reflection point stacking, linear and nonlinear velocity filtering, and velocity spectral analysis, have been successful in enhancing reflections from the middle and lower parts of the crust. From the preliminary results of the two reflection surveys, it may be concluded that those parts of the crust which are shown as relatively simple layers in the refraction derived models, may be quite complex when viewed on a smaller scale.



1999 ◽  
Vol 58 (4) ◽  
pp. 263-272
Author(s):  
Jörg Doll ◽  
Michael Dick

The studies reported here focus on similarities and dissimilarities between the terminal value hierarchies ( Rokeach, 1973 ) ascribed to different groups ( Schwartz & Struch, 1990 ). In Study 1, n = 65 East Germans and n = 110 West Germans mutually assess the respective ingroup and outgroup. In this intra-German comparison the West Germans, with a mean intraindividual correlation of rho = 0.609, perceive a significantly greater East-West similarity between the group-related value hierarchies than the East Germans, with a mean rho = 0.400. Study 2 gives East German subjects either a Swiss (n = 58) or Polish (n = 59) frame of reference in the comparison between the categories German and East German. Whereas the Swiss frame of reference should arouse a need for uniqueness, the Polish frame of reference should arouse a need for similarity. In accordance with expectations, the Swiss frame of reference significantly reduces the correlative similarity between German and East German from a mean rho = 0.703 in a control group (n = 59) to a mean rho = 0.518 in the experimental group. Contrary to expectations, the Polish frame of reference does not lead to an increase in perceived similarity (mean rho = 0.712).



2007 ◽  
Vol 24 (3) ◽  
pp. 484-503 ◽  
Author(s):  
Lynn K. Shay ◽  
Jorge Martinez-Pedraja ◽  
Thomas M. Cook ◽  
Brian K. Haus ◽  
Robert H. Weisberg

Abstract A dual-station high-frequency Wellen Radar (WERA), transmitting at 16.045 MHz, was deployed along the west Florida shelf in phased array mode during the summer of 2003. A 33-day, continuous time series of radial and vector surface current fields was acquired starting on 23 August ending 25 September 2003. Over a 30-min sample interval, WERA mapped coastal ocean currents over an ≈40 km × 80 km footprint with a 1.2-km horizontal resolution. A total of 1628 snapshots of the vector surface currents was acquired, with only 70 samples (4.3%) missing from the vector time series. Comparisons to subsurface measurements from two moored acoustic Doppler current profilers revealed RMS differences of 1 to 5 cm s−1 for both radial and Cartesian current components. Regression analyses indicated slopes close to unity with small biases between surface and subsurface measurements at 4-m depth in the east–west (u) and north–south (υ) components, respectively. Vector correlation coefficients were 0.9 with complex phases of −3° and 5° at EC4 (20-m isobath) and NA2 (25-m isobath) moorings, respectively. Complex surface circulation patterns were observed that included tidal and wind-driven currents over the west Florida shelf. Tidal current amplitudes were 4 to 5 cm s−1 for the diurnal and semidiurnal constituents. Vertical structure of these tidal currents indicated that the semidiurnal components were predominantly barotropic whereas diurnal tidal currents had more of a baroclinic component. Tidal currents were removed from the observed current time series and were compared to the 10-m adjusted winds at a surface mooring. Based on these time series comparisons, regression slopes were 0.02 to 0.03 in the east–west and north–south directions, respectively. During Tropical Storm Henri’s passage on 5 September 2003, cyclonically rotating surface winds forced surface velocities of more than 35 cm s−1 as Henri made landfall north of Tampa Bay, Florida. These results suggest that the WERA measured the surface velocity well under weak to tropical storm wind conditions.



2021 ◽  
Vol 2021 (271) ◽  
pp. 1-16
Author(s):  
Alexandra Grey ◽  
Loy Lising ◽  
Jinhyun Cho

Abstract That English has spread in Asia is well-known, but this critical reflection, and the five contributions and book review that we hereby introduce, contribute to rectifying the relative absence in the sociology of language literature of studies approaching language ideologies and practices in specific Asian contexts from local perspectives. We are not alone; our inspections of journal archives show that scholars are increasingly responding to this relative absence in recent years. What this special issue offers is further diversity of both authors and cases, and moreover this special issue draws attention to the immutable, binary structure underlying the various globally-circulating discourses of the East and the West as part of investigating how socially constructed East-West binaries interact with language ideologies about English and other languages. It shifts the attention from fixity – East versus West – to diversity, extending East to Easts and West to Wests as our contributors identify and examine multiple, endogenous “imaginative geograph[ies]” (from Arif Dirlik’s [1996] “Chinese history and the question of Orientalism”, History and Theory 35(4): 97) constructed through various Orientalist ideologies. It founds this approach on a combination of the theory of recursive language ideologies and critical Orientalism scholarship. This is generative of new and useful sociolinguistic analyses. Having laid out this theoretical extension, this editorial then provides an overview of the issue’s contributions, which examine how socially constructed East-West binaries are interacting with language ideologies about English and other languages on sub-national scales in various Asian contexts including in Korea, China, Japan, Tajikistan and Pakistan.



2003 ◽  
Vol 37 (3) ◽  
pp. 737-763 ◽  
Author(s):  
Thammy Evans

Ever since the discovery of China by Western nations the West has continually tried to gain access to China, and sometime even to understand her. Conversely, many Eastern nations who came within China's reach have preferred to keep her at arms length. This dichotomy continues today, although the East/West division is less clear. The People's Republic of China's sheer geographical size, its location in the heart of Asia, its huge population and thus its potential as an economic and miitary superpower instils fear in many. Will the PRC become a ‘responsible power’, an irresponsible hegemon, or collapse into political disorder and chaos? In anticipation of the coming changes in the PRC, the foreign policy of those nations concerned with the PRC has oscillated between engagement and containment of China.



2021 ◽  
pp. 1-47
Author(s):  
Robin Clancy ◽  
Cecilia M. Bitz ◽  
Edward Blanchard-Wrigglesworth ◽  
Marie C. McGraw ◽  
Steven M. Cavallo

AbstractArctic cyclones are an extremely common, year-round phenomenon, with substantial influence on sea ice. However, few studies address the heterogeneity in the spatial patterns in the atmosphere and sea ice during Arctic cyclones. We investigate these spatial patterns by compositing on cyclones from 1985-2016 using a novel, cyclone-centered approach that reveals conditions as functions of bearing and distance from cyclone centers. An axisymmetric, cold core model for the structure of Arctic cyclones has previously been proposed, however, we show that the structure of Arctic cyclones is comparable to those in the mid-latitudes, with cyclonic surface winds, a warm, moist sector to the east of cyclones and a cold, dry sector to the west. There is no consensus on the impact of Arctic cyclones on sea ice, as some studies have shown that Arctic cyclones lead to sea ice growth and others to sea ice loss. Instead, we find that sea ice decreases to the east of Arctic cyclones and increases to the west, with the greatest changes occurring in the marginal ice zone. Using a sea ice model forced with prescribed atmospheric reanalysis, we reveal the relative importance of the dynamic and thermodynamic forcing of Arctic cyclones on sea ice. The dynamic and thermodynamic responses of sea ice concentration to cyclones are comparable in magnitude, however dynamic processes dominate the response of sea ice thickness and are the primary driver of the east-west difference in the sea ice response to cyclones.



1959 ◽  
Vol S7-I (8) ◽  
pp. 803-808
Author(s):  
Vladimir Stchepinsky

Abstract Upper Jurassic (Kimeridgian and Portlandian) and lower Cretaceous formations crop out in the area south of Bar-le-Duc, France. In contrast to the fractured area to the west, this area is a solid block. The relatively unimportant Veel-Combles fault is related to the Marne double fault, despite its isolation. An east-west fault, 20 kilometers long with a southward throw of 10 meters, can also be traced. The paleogeographic evolution of the area during the Mesozoic is outlined.



Author(s):  
Susumu Yamaguchi ◽  
Takafumi Sawaumi

Individuals exercise control over themselves, others, and environment. According to a seminal work by Weisz, Rothbaum, and Blackburn, which represents a Western view, people in the West prefer to control others or environment to make their life more comfortable (primary control), whereas people in the East prefer to control themselves to fit into environment (secondary control). This chapter critically examines the Western conceptualization of control. Then an alternative view based on Asian value system is presented. According to this view, East–West differences exist not in the target of control (oneself vs. others or environment) but in how people attempt to control others and their environment. The authors present empirical evidence to support the alternative view and propose a framework to understand individuals’ seeking for psychological well-being in the East and West. Westerners (especially North Americans) prefer to control the environment so that they can feel autonomous, whereas Easterners (especially Japanese) care more about consequences of control in terms of interpersonal harmony.



1970 ◽  
Vol 36 ◽  
pp. 125-151 ◽  
Author(s):  
John M. Coles ◽  
F. Alan Hibbert ◽  
Colin F. Clements

The Somerset Levels are the largest area of low-lying ground in south-west England, covering an extensive region between the highlands of Exmoor, the Brendon Hills and the Quantock Hills to the west, and the Cotswold and Mendip Hills to the east (Pl. XXIII, inset). The Quantock Hills and the Mendip Hills directly border the Levels themselves, and reach heights of over 250 metres above sea level. The valley between extends to 27 metres below sea level, but is filled to approximately the height of the present sea by a blue-grey clay. The Levels are bisected by the limestone hills of the Poldens, and both parts have other smaller areas of limestone and sand projecting above the peat deposits that cap the blue-grey clay filling. In this paper we are concerned with the northern part of the Levels, an area at present drained by the River Brue.The flat, peat-covered floor of the Brue Valley is some six kilometres wide and is flanked on the north by the Wedmore Ridge, and on the south by the Polden Hills (Pl. XXIII). In the centre of the valley, surrounded by the peat, is a group of islands of higher ground, Meare, Westhay, and Burtle. These islands, which would always have provided relatively dry ground in the Levels, are linked together by Neolithic trackways of the third millennium B.C. Several of these trackways formed the basis of a paper in these Proceedings in 1968 (Coles and Hibbert, 1968), which continued the work of Godwin and others (Godwin, 1960; Dewar and Godwin, 1963).



2014 ◽  
Vol 32 (1) ◽  
pp. 30-42
Author(s):  
Monika Boll

This article delves into the relationship between cultural radio and the Cold War. After 1945, culural radio took on a central role in the intellectual self-understanding of the early Federal Republic. From the very beginning, there was much less censorship than with political editorial departments. Thus, it was possible for cultrual radio to offer an intellectual forum in which socialism was not simply dismissed due to the official anticommunist political doctrine. This article shows the ways in which the East-West conflict was present in the cultrual departments of radio broadcasters. It argues that socialism appeared less as an ideological restraint or taboo, but rather as a productive challenge, which in the end was part of the modernization of West Germany's intellectual self-understanding. Two prominent examples buttress this argument: the free space that cultrual radio conquered in a kind of leftist integration with the West, and the rapid advancement of sociological discourse.



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