共查询到20条相似文献，搜索用时 31 毫秒
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James D Sidaway 《Area》2005,37(4):373-377
This paper examines a key aspect of how the global geometries of finance and trade articulate the euro–dollar relationship. Here, European integration extends into a global financial and trading system replete with contradictions. The paper examines these, drawing upon a literature from international political economy, foregrounding the spatialities that they signal. 相似文献
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在有关养老的老年学和地理学研究中,“就地养老”是一个广泛使用的概念,并一直被认为是解决老龄人口养老需求的有效政策手段。迄今为止,关于就地养老的研究主要关注了很多能够让老年人健康就地(或在家)养老的物质方面的因素,比如住房条件或家庭照护。有些老年学研究者们认识到,就地养老受到居住环境中实体环境和社会、情感因素的共同影响。但我们认为,在养老体验研究中,要更加深入地审视“人”和“地方”之间的复杂关系。特别是,我们主张就地养老成功的因素是地方具有维持良好关系的潜力。提到“地方(place)”一词的时候,人们过分局限于关注老年人身体上接近的地理空间,或是具有实体边界的地方,例如房子或社区。而我们通过回顾现有文献发现,对许多选择就地养老的人来说,更具有意义的是随着时间的推移,他们在不同空间尺度上所建立起来的多元的、网络化的社会和非社会关系。基于这个新的视角,可以更好地理解老年人与地方的多层次的联系,以及从不同尺度和不同类型的人与地方的关系来考察就地养老的意义。 相似文献
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《Basin Research》2018,30(3):564-585
Studies in both modern and ancient Cordilleran‐type orogenic systems suggest that processes associated with flat‐slab subduction control the geological and thermal history of the upper plate; however, these effects prove difficult to deconvolve from processes associated with normal subduction in an active orogenic system. We present new geochronological and thermochronological data from four depositional areas in the western Sierras Pampeanas above the Central Andean flat‐slab subduction zone between 27° S and 30° S evaluating the spatial and temporal thermal conditions of the Miocene–Pliocene foreland basin. Our results show that a relatively high late Miocene–early Pliocene geothermal gradient of 25–35 °C km−1 was typical of this region. The absence of along‐strike geothermal heterogeneities, as would be expected in the case of migrating flat‐slab subduction, suggests that either the response of the upper plate to refrigeration may be delayed by several millions of years or that subduction occurred normally throughout this region through the late Miocene. Exhumation of the foreland basin occurred nearly synchronously along strike from 27 to 30° S between ca. 7 Ma and 4 Ma. We propose that coincident flat‐slab subduction facilitated this wide‐spread exhumation event. Flexural modelling coupled with geohistory analysis show that dynamic subsidence and/or uplift associated with flat‐slab subduction is not required to explain the unique deep and narrow geometry of the foreland basin in the region implying that dynamic processes were a minor component in the creation of accommodation space during Miocene–Pliocene deposition. 相似文献
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Fluxes of CO<Subscript>2</Subscript>, CH<Subscript>4</Subscript> and N<Subscript>2</Subscript>O from alpine grassland in the Tibetan Plateau 总被引：1，自引：0，他引：1
PEIZhiyong OUYANGHua ZHOUCaiping XUXingliang 《地理学报(英文版)》2003,13(1):27-34
Using static chamber technique,fluxes of CO2,CH4 and N2O were measured in the alpine grassland area from July 2000 to July 2001,determinations of mean fluxes showed that CO2 and N2O were generally released from the soil,while the alpine grassland accounted for a weak CH4 sink.Fluxes of CO2,CH4 and N2O ranged widely.The highest CO2 emission occurred in August,whereas almost 90?of the whole year emission occurred in the growing season.But the variations of CH4 and N2O fluxes did not show any clear patterns over the one-year-experiment.During a daily variation,the maximum CO2 emission occurred at 16:00,and then decreased to the minimum emission in the early morning.Daily pattern analyses indicated that the variation in CO2 fluxes was positively related to air temperatures(R^2=0.73)and soil temperatures at a depth of 5 cm(R^2=0.86),whereas daily variations in CH4 and N2O fluxes were poorly explained by soil temperatures and climatic variables.CO2 emissions in this area were much lower than other grasslands in plain areas. 相似文献
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R.I. Waller A.J. Russell T.A.G.P. van Dijk & Ó. Knudsen 《Geografiska Annaler: Series A, Physical Geography》2001,83(1-2):29-38
During the initial stages of the November 1996 jökulhlaup at Skeiðarárjökull, Iceland, floodwaters burst onto the glacier surface via a series of fractures. This supraglacial drainage led to the formation of a number of distinct ice surface depressions, one of which is investigated in detail. The morphology and structural characteristics of this feature are described, as well as the sedimentology of an associated assemblage of debris-filled fractures. This work suggests that debris-charged subglacial floodwaters travelled up to the glacier surface, where supraglacial flow occurred initially via an extensive network of fractures, orientated parallel to the glacier margin. Supraglacial discharge became progressively more focused into a series of discrete outlets, leading to the mechanical erosion of a number of depressions on the glacier surface. The associated transfer of subglacially derived floodwaters to high levels within the glacier resulted in the rapid entrainment of large volumes of sediment which may influence the patterns, processes and products of ice-marginal sedimentation in the future. 相似文献
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Melanie Wall 《New Zealand geographer》1997,53(2):40-45
Since the colonisation of Aotearoa / New Zealand by Pakeha, Maori have been stereotypically imagined as the Black Other. One of the principal mechanisms for the continued perpetuation of this racialised discourse is the representation of ‘race’ through stereotypes in the media. ‘New’ cultural geography provides a theoretical foundation to interrogate stereotypical (re)formations of Maori identity. I conclude that the use of the stereotype in the (re)formation of Maori identity further demarcates and constrains Maori within the perennial position of the Black Other. Only through a retheorisation of difference (which moves beyond the construction of the Maori ‘race’ through stereotypes), can the impact of racialisation be effectively resisted. 相似文献
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The distinctive black‐and‐white houses from Singapore's colonial era that survive in enclaves as fine dwellings for the present‐day elite have been recognized and documented as a type. In this paper we tell the story of their cultural formation, which is one of remarkable hybridity. Various influences were brought to bear and resolved into the black‐and‐white house‐type, which was not invented ‘all at once’ in Singapore, but developed over the course of more than two centuries. We begin the story in India, when British settlers learnt from local Bengali practices to make serviceable dwellings for a climate that they found difficult. The overhanging roofs that shaded walls and the tall internal volumes were formalized with reference to European expectations of geometry and finish, and the bungalow was born. In British Malaya the bungalow was further hybridized with the house on stilts that was well known to the indigenous tradition. This produced the spatial configuration that is to be found also in the Singapore houses, with their extensive verandas on an upper floor level. Their distinctive colouring comes from a different tradition: the black‐and‐white Tudoresque style that was very popular in Britain and sometimes called ‘Old English’. This was used by the British colonizers so that they could feel more at home in surroundings that were in a far‐off foreign cultural environment. 相似文献
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Thaddeus Chidi Nzeadibe Chukwuedozie Kelechukwu Ajaero Mary Basil Nwoke 《Singapore journal of tropical geography》2015,36(3):376-393
This study applies the political ecology perspective in reframing corporate‐community engagement and adapts the community‐directed intervention (CDI) strategy using Global Memorandum of Understanding (GMoU) framework in relation to 30 rural communities that are likely to be affected by gas exploration and production activities in the Niger Delta region. The study draws attention to the indigenous structures and capacities of communities to implement CDI initiatives for possible replication in areas facing similar development challenges. Adopting the CDI framework as represented by the GMoU model could reconfigure social relations of power between companies and communities and fast‐track development and prevent or, at least, reduce corporate‐community tensions and conflicts in the petro‐economy of the Niger Delta. 相似文献
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Late Cenozoic uplift of the Amanos Mountains and incision of the Middle Ceyhan river gorge, southern Turkey; Ar–Ar dating of the Düziçi basalt 总被引：4，自引：0，他引：4
Ali Seyrek Tuncer Demir Malcolm Pringle Sema Yurtmen Rob Westaway David Bridgland Anthony Beck George Rowbotham 《Geomorphology》2008,97(3-4):321-355
Using the Ar–Ar technique, we have obtained the first numerical dates for the Pleistocene volcanism along the valley of the River Ceyhan in the Düziçi area of southern Turkey, in the western foothills of the Amanos Mountains. Our six dates indicate a single abrupt episode of volcanism at 270 ka. We have identified a staircase of 7 fluvial terraces, at altitudes of up to 230 m above the present level of the Ceyhan. Using the disposition of the basalt as an age constraint, we assign these terraces to cold-climate stages between marine oxygen isotope stages 16 and 2, indicating rates of fluvial incision, equated to surface uplift, that increase upstream through the western foothills of this mountain range at between 0.25 and 0.4 mm a− 1. Extrapolation of these uplift rates into the axis of the range suggests that the entire 2300 m of present-day relief has developed since the Mid-Pliocene, a view that we confirm using numerical modelling. Since 3.7 Ma the Amanos Mountains have formed a transpressive stepover along the northern part of the Dead Sea Fault Zone, where crustal shortening is required by the geometry. Using a physics-based technique, we have modelled the overall isostatic response to the combination of processes occurring, including crustal thickening caused by the shortening, erosion caused by orographic precipitation, and the resulting outward flow of mobile lower-crustal material, in order to predict the resulting history of surface uplift. This modelling suggests that the effective viscosity of the lower crust in this region is in the range 1–2 × 1019 Pa s, consistent with a Moho temperature of 590 ± 10 °C, the latter value being in agreement with heat flow data. This modelling shows that the nature of the active crustal deformation is now understood, to first order at least, in this key locality within the boundary zone between the African and Arabian plates, the structure and geomorphology of which have been fundamentally misunderstood in the past. 相似文献