Cyclic loading of an idealized clay‐filled fault: comparing hydraulic flow in two clay gouges

The flow of water along discontinuities, such as fractures or faults, is of paramount importance in understanding the hydrogeology of many geological settings. An experimental study was undertaken comprising two experiments on a 30° slip‐plane filled with kaolinite or Ball Clay gouge using a bespoke Angled Shear Rig (ASR). The gouge was initially loaded in equal step changes in vertical stress, followed by unloading of the sample in similar equal steps. This was followed by reloading to a new maximum stress, followed by unloading; the test history was therefore load‐unload‐reload‐unload (LURU). The transmissivity of the kaolinite and Ball Clay gouge showed a power‐law relationship with vertical stress. The LURU history showed considerable hysteresis, with flow effectively unchanged during unloading, even when vertical stress was close to zero. Reloading resulted in flow similar to that seen during unloading suggesting that the unloading‐reloading path is similar to the rebound‐reconsolidation line in classic soil mechanics. These observations show the importance of stress history on fracture flow; consideration of just the current stress acting upon a fracture may result in inaccuracies of predicted hydraulic flow. Once a new stress maximum was achieved the transmissivity of the fracture continued to reduce. No significant variation was seen in the flow response of kaolinite and Ball Clay gouge suggesting that the inclusion of illite and quartz did not have a significant influence on the form of the relationship between stress and flow, i.e. both described by a power‐law.     

‘Not a Position for a Gentleman’: Sir Matthew Nathan as Colonial Administrator: From Cape Coast Castle to Dublin Castle via Natal

This article examines the role of Sir Matthew Nathan, British permanent under secretary for Ireland at the time of the Easter Rising in April 1916, and how critical events in his career as soldier, colonial governor and civil servant shaped his conduct and reaction to events in Ireland as the Rising unfolded around him. The article raises issues of identities: namely Nathan's own identity as an English gentleman, when, given his Jewish background, he was an outsider to that caste. Nathan's brief military career and lengthier career as a colonial governor earned him high praise as a model bureaucrat. In this paper Nathan's track from the War Office through government houses situated in West Africa, Hong Kong and Natal to Dublin Castle is traced to illustrate the changes in his character from decisiveness to indecision. While Nathan clearly misread the volatile situation in Ireland over the 1916 Easter weekend, his actions demonstrated both indecision and bureaucratic delaying tactics. It is argued that his experiences with obdurate settler ministers in Natal played a role in shaping his hesitancy at the time of crisis in Dublin and that this hesitancy provided an opportunity for the direct action of the Irish Volunteers. The conclusion is that, at the time of the Irish crisis, Nathan failed to exercise the ‘power of the personal influence’ expected of an experienced governor.     

The 1989 Tasmanian election: The green independents consolidate

This paper provides an analysis of the election of 13 May 1989 which was a major watershed in Tasmanian politics. Independent members of parliament were elected in each of Tasmania's five electorates with the result that neither the Liberal Party nor the ALP could govern in their own right The period following the election was marked by continuing political drama punctuated by several key events. These events included the development of the Tasmanian Parliamentary Accord between the ALP and the Independents, continued pressure from supporters of the Liberal Party for a fresh election, and arrests in relation to an alleged attempt to bribe a newly‐elected ALP member to cross the floor and support the Liberal Party. The defeat of the Gray government in a vote of no‐confidence following the recall of parliament, and the resignation of Premier Gray, led to the commissioning of a minority ALP ministry, relying on the support of the Independents.     

Structure and culture in a non‐partisan Westminster parliament: Canada's northwest territories

For legislatures which have not developed out of indigenous political culture, it is important to understand the interplay of structure and culture. This paper examines the influence of structural arrangements and of cultural context on the attitudes and perceptions of members of the legislature in Canada's Northwest Territories (NWT). This institution is marked by a notable lack of congruence between its British cabinet‐parliamentary structure and the aboriginal political culture of NWT society. Structure and culture are both found to be important influences, but on different attitudinal dimensions: structure affects members’ perceptions of how political processes work, whereas culture determines members’ normative evaluations of politics.     

Playing war

This paper argues that war video games are transitional spaces that connect players to the ‘war on terror’. It explores the pervasive influence of militarism in video games and how the US Army is enlisting play as an active force in blurring the distinctions between civilian and soldier. The paper begins by theorizing what exactly it means to ‘play’, and settles on the concept of ‘transitional space’ provided by psychoanalyst Donald Winnicott. It then investigates the ‘military entertainment complex’, an assemblage of institutions and sites that produce military video games for commercial release. Next, the paper looks at the aesthetics of video games, revealing an entrenched colonial logic instrumental for military recruitment and consent. The final section pulls all of this together to argue that video games are transitional spaces instrumental to understanding the everyday geographies of violence, terror, and warfare.