排序方式： 共有5条查询结果，搜索用时 46 毫秒
1
1.
Abstract SEASAT altimetric measurements are used to determine the gravity anomalies across two passive continental margins: the western margin of the Rockall Plateau, UK, and the Exmouth Plateau off north-west Australia. The small gravity anomalies observed over the starved western margin of the Rockall Plateau require the existence of a major density contrast within the crust, as well as the Moho, and show that the elastic thickness is less than 5 km at the time of rifting. The gravity anomaly over the Exmouth Plateau is compared with the gravity anomaly calculated from the sediment loading of a thin elastic plate, taking account of the variation in crustal thickness. This comparison shows that the Exmouth Plateau also has a small effective elastic thickness of 5 km, even for loads emplaced between 60 and 120 Myr after rifting. Elastic thicknesses of about 5 km have also been reported for other sedimentary basins, and are to be expected if the rheological properties of the crust and mantle depend on the ratio of the present temperature to the melting temperature. Flexural effects are therefore likely to be of minor importance in sedimentary basins. 相似文献
2.
Integrated water resource management and institutional integration: realising the potential of spatial planning in England 总被引：1，自引：0，他引：1
This paper explores the various dimensions of integration that need consideration in developing appropriate institutional arrangements for integrated water resource management (IWRM), drawing upon both IWRM and spatial planning sources. As a result, a framework of integration in IWRM is set out. This is then used to consider the strengths and weaknesses of the new spatial planning system in England, and its potential to contribute to IWRM activities that are being developed, partly in response to the European Union Water Framework Directive. From this analysis it is argued that, taken overall, spatial planning is well placed to meet these challenges and it could in fact play a much more central role than is currently envisaged. An alternative model for IWRM in England is set out which sees the new river basin management plans as integral, rather than parallel, to the spatial planning system. 相似文献
3.
SUE SLADEN 《Geology Today》1995,11(2):72-77
Museums may not be the first place that people think of in connection with a scientific specialism such as geology. They are more frequently associated with the study of history: the Victorians, the Romans, Ancient Egypt. This popular misconception is not, however, based on fact; the Doughty Report of the early 1980s showed that there are around 300 museums in Britain with geology collections just waiting to be used. 相似文献
4.
SUE GRIMMOND 《The Geographical journal》2007,173(1):83-88
5.
SUE PLOWMAN 《New Zealand geographer》1995,51(1):19-21
Debates about research methodologies have recently gained currency in human geography. This paper examines my response to qualitative research I recently undertook on female single parents and their residential location choice. I discuss the methodology and examine issue of positionality and reflexivity as their elate to my research. 相似文献
1