Geographical Linked Data: The Administrative Geography of Great Britain on the Semantic Web   总被引：1，自引：0，他引：1  

John Goodwin  Catherine Dolbear  Glen Hart 《Transactions in GIS》2008,12(Z1):19-30

Ordnance Survey, the national mapping agency of Great Britain, is investigating how semantic web technologies assist its role as a geographical information provider. A major part of this work involves the development of prototype products and datasets in RDF. This article discusses the production of an example dataset for the administrative geography of Great Britain, demonstrating the advantages of explicitly encoding topological relations between geographic entities over traditional spatial queries. We also outline how these data can be linked to other datasets on the web of linked data and some of the challenges that this raises.  相似文献   

Distribution and geochronology of Oregon Plateau (U.S.A.) flood basalt volcanism: The Steens Basalt revisited     

Matthew E. Brueseke  Matthew T. Heizler  William K. Hart  Stanley A. Mertzman 《Journal of Volcanology and Geothermal Research》2007

The timing and petrogenesis of mid-Miocene flood basalt volcanism in the northwest United States has been extensively addressed, yet the chemical characteristics and temporal details of the Steens Basalt, exposed on the Oregon Plateau, are poorly defined. Steens Basalt volcanism has generally been accepted to have occurred at ∼ 16.6 Ma, coeval and/or just prior to the onset of Columbia River Basalt Group volcanism to the north. New major and trace element analyses and nine ⁴⁰Ar/³⁹Ar ages ranging from 15.51 ± 0.28 to 16.58 ± 0.18 Ma were obtained on Oregon Plateau flood basalt lava flows from stratigraphic sections in close proximity to Steens Mountain. Additionally, new ⁴⁰Ar/³⁹Ar ages were obtained on the uppermost and thirty-first lava flow down from the top of the ∼ 1 km section of Steens Basalt exposed at Steens Mountain and yield eruption ages of 16.59 ± 0.10 and 16.55 ±0.10 Ma, respectively. Field relations between these basalt sections suggest that multiple eruptive centers were present in the vicinity of Steens Mountain.  相似文献   

Fire intensity,slopewash and bio‐transfer of sediment in eucalypt forest,Australia     

Deirdre Dragovich  Rowena Morris 《地球表面变化过程与地形》2002,27(12):1309-1319

Sediment movement (slopewash and bio‐transfer), runoff, and organic matter movement (mainly leaf litter, ash and charcoal) were monitored on ten plots for a six‐month period following bushfires in eastern Australia in the 1990s. Plots were installed in areas which had experienced high, moderate and low intensity burns. Although between‐plot variability was high, slopewash and organic matter amounts were greatest on the intensely burnt areas, and progressively less on moderate and low intensity burns. In contrast, most leaf litter input from scorched leaf fall was derived from, and collected in, moderately burnt areas. Bio‐transfer of sediment (direct downslope surface movement produced by faunal activity) occurred mainly by ant mounding, and was more than ten times greater on moderately burnt areas than on plots having high or low intensity burns. Bio‐transfer accounted for approximately 36 per cent of total sediment collected, with this material being recorded least often and in smallest quantities on areas of high intensity burns. Bio‐transfer by ant mounding and animal scratchings contributed loose surface sediment for transport by overland flow, disproportionately increasing total sediment movement to plot aprons in areas of moderate intensity burns. Copyright © 2002 John Wiley & Sons, Ltd.  相似文献   

    

P. E. Hart  R. O. Duda  M. T. Einaudi 《Mathematical Geology》1978,10(5):589-610

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Erratum     

G. G. Baxter  S. M. Cargill  A. H. Chidester  P. E. Hart  G. M. Kaufman  F. Urquidi-Barrau  D. D. Picklyk 《Mathematical Geology》1979,11(3):343

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URBAN RESIDENTIAL RENOVATION AND RENEWAL: MODELING BY GRAPHIC SYNTHESIS     

Graeme H. T. Hart 《The Professional geographer》1980,32(4):439-445

Houses in inner-city areas, because of their age, suffer the depredations of functional obsolescence and decay. Some, however, have sound locations and are able to assemble economic forces that precipitate rehabilitation by both renters and owners. Accompanying restoration is a concomitant increase in market value and in population density, the corollary of which is a reduction in lot size. This process is modeled by graphically synthesizing elements of location theory, urban growth theory, and principles of economics.  相似文献   

The long arm of climate change: societal teleconnections and the future of climate change impacts studies   总被引：1，自引：0，他引：1  

Susanne C. Moser  Juliette A. Finzi Hart 《Climatic change》2015,129(1-2):13-26

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Paleogene carbon isotope excursions in the Bunkers Hill borehole: Hampshire Basin, UK     

Emma Hodgson  Stephen T. Grimes  Gregory D. Price  Meriel E.J. Fitzpatrick  Malcolm B. Hart  Melanie J. Leng 《Proceedings of the Geologists' Association. Geologists' Association》2011,122(3):460-471

This study demonstrates that the Bunkers Hill borehole, which is located within the Hampshire Basin, contains a carbon isotope excursion (CIE) in the Upnor Formation followed by a positive recovery from another CIE within the overlying Reading Formation. This study has also shown that the CIE in the Upnor Formation predates the Paleocene/Eocene Thermal Maximum (PETM), while the carbon isotope recovery at the base of the Reading Formation is most likely related to it. The positive carbon isotope trend, before a return to more negative values, seen throughout the majority of the Reading Formation can also be seen in coeval deposits in the Jubilee 404T borehole in the London Basin and in the Tienen Formation in the Doel and Kallo boreholes from the Belgium Basin. This indicates that this post-PETM carbon isotope signal may, therefore, be regional if not global in nature.  相似文献   

Salt weathering and experimental desalination treatment of building sandstone,Sydney (Australia)     

Deirdre Dragovich  Matthew Egan 《Environmental Earth Sciences》2011,62(2):277-288

Local sandstone used in nineteenth century buildings in Sydney has been affected by salt weathering and surface crust formation. This study trialled two approaches, namely washing-and-vacuuming and poulticing, to salt-removal treatment of weathered sandstone blocks from the Sydney Hospital and Australian Museum. Both treatments removed solutes from the stones in laboratory tests. ICP/titration of sampled scrapings at depths of 0–2, 2–5 and >50 mm showed substantial between-sample variation, with no significant difference being recorded in solute levels after treatment (Mann–Whitney U test), except for sulfur and sodium. Sulfur levels increased at the surface (0–2 mm) following washing-and-vacuuming but not poulticing for the Hospital and Museum samples. Sodium levels increased at the surface (0–2 mm) following poulticing but not washing-and-vacuuming for the Hospital samples. The presence of surface crusts may have contributed to some of the variation in desalination responses.  相似文献   

Jurassic planktonic foraminifera from the United Kingdom     

Melissa J. Oxford  F. JohnGregory  Malcolm B. Hart  rew S. Henderson  Michael D. Simmons  & Matthew P. Watkinson 《地学学报》2002,14(3):205-209

Unequivocal planktonic foraminifera have been discovered in Oxfordian strata from Dorset and Scotland. These assemblages are, in part, coeval with previously reported occurrences of planktonic taxa in the Oxfordian of Normandy and Seine Maritime (France). Three species are now reported from the United Kingdom for the first time: Globuligerina oxfordiana ( Grigelis, 1958 ), Haeuslerina helvetojurassica ( Haeusler, 1881 ) and Compactogerina sp. cf. C. stellapolaris ( Grigelis, 1977 ). There appears to be a close relationship between the distribution of these planktonic taxa in the UK and a marked sea-level highstand.  相似文献