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  • 1
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    Geographic object‐based image analysis (GEOBIA) of the distribution and characteristics of aeolian sand dunes in Arctic Sweden (2022)
    Details
    Publication Date: 2023-11-18
    Description: Current climate change in the Arctic is unprecedented in the instrumental record, with profound consequences for the environment and landscape. In Arctic Sweden, aeolian sand dunes have been impacted by climatic changes since their initial formation after the retreat of the last glacial ice sheet. Dune type, location and orientation can therefore be used to explore past wind patterns and landscape destabilisation in this sensitive area. However, knowledge of the full spatial extent and characteristics of these dunes is limited by their inaccessibility and dense vegetation cover. Geographic object‐based image analysis (GEOBIA) permits the semi‐automatic creation of reproducible parameter‐based objects and can be an appropriate means to systematically and spatially map these dunes remotely. Here, a digital elevation model (DEM) and its derivatives, such as slope and curvature, were segmented in a GEOBIA context, enabling the identification and mapping of aeolian sand dunes in Arctic Sweden. Analysis of the GEOBIA‐derived and expert‐accepted polygons affirms the prevalence of parabolic dune type and reveals the coexistence of simple dunes with large coalesced systems. Furthermore, mapped dune orientations and relationships to other geomorphological features were used to explore past wind directions and to identify sediment sources as well as the reasons for sand availability. The results indicate that most dune systems in Arctic Sweden were initially supplied by glaciofluvial and fluvial disturbances of sandy esker systems. Topographic control of wind direction is the dominant influence on dune orientation. Further, our approach shows that analysing the GEOBIA‐derived dune objects in their geomorphological context paves the way for successfully investigating aeolian sand dune location, type and orientation in Arctic Sweden, thereby facilitating the understanding of post‐glacial landscape (in)stability and evolution in the area.
    Description: Göran Gustafsson Foundation http://dx.doi.org/10.13039/501100003426
    Keywords: ddc:551.3 ; geomorphological mapping ; Holocene ; landscape development ; parabolic dunes ; semi‐automatic landform delimination ; wind directions
    Language: English
    Type: doc-type:article
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    CITATION GEO-LEO
  • 2
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    Detrital zircon U-Pb age and detrital rutile trace element data from the late Neogene Baode Red Clay sequence, Chinese Loess Plateau, and detrital rutile geochemistry from 14 potential source areas (2023)
    PANGAEA
    Details
    Publication Date: 2023-03-01
    Description: The data were collected for a joint detrital zircon and detrital rutile provenance study of the late Neogene aeolian Baode Red Clay, located on the northern part of the Chinese Loess Plateau. The data consist of detrital zircon U-Pb ages of the 4.04–2.64 Ma Baode Red Clay (four samples from the Pliocene Jingle Formation and one sample from the 2.64 Ma Transitional Unit), and detrital rutile trace element geochemistry of the 6.91–2.64 Ma Baode Red Clay (three samples from the Miocene Baode Formation, five samples from the Pliocene Jingle Formation, and one sample from the Transitional Unit) and 14 potential sedimentary source areas in Central-East Asia. The data were collected using Nu Plasma AttoM single collector ICP-MS (Nu Instruments Ltd., Wrexham, UK) connected to an Analyte Excite 193 ArF laser ablation system (Photon Machines, San Diego, USA) at the Geological Survey of Finland. The rutiles were analysed for Li, Mg, Al, Si, P, Ca, Sc, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Rb, Sr, Y, Zr, Nb, Mo, Sn, Sb, Ba, La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, Hf, Ta, W, Pb, Th, and U. The grain size fractions of the analysed grains were mostly 30–90 μm for the Red Clay zircons and rutiles, and 20–500 μm for the potential source area rutiles.
    Keywords: Chinese Loess Plateau; detrital rutile; detrital zircon; eolian sediment; Miocene; Pliocene; Provenance; Red Clay
    Type: Dataset
    Format: application/zip, 2 datasets
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    DATA PANGAEA
  • 3
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    Detrital zircon U-Pb age from the late Neogene Baode Red Clay sequence, Chinese Loess Plateau (2023)
    PANGAEA
    Details
    Publication Date: 2023-03-01
    Description: The data consist of detrital zircon U-Pb ages of the 4.04–2.64 Ma Baode Red Clay (four samples from the Pliocene Jingle Formation and one sample from the 2.64 Ma Transitional Unit). The data were collected using Nu Plasma AttoM single collector ICP-MS (Nu Instruments Ltd., Wrexham, UK) connected to an Analyte Excite 193 ArF laser ablation system (Photon Machines, San Diego, USA) at the Geological Survey of Finland.
    Keywords: Age; Age, 206Pb/238U Lead-Uranium; Age, 207Pb/206Pb Lead-Lead; Age, 207Pb/235U Lead-Uranium; Age, error; Age, mineral; Baode; Chinese Loess Plateau; Comment; Correlation coefficient, isotope ratio error; Degree of concordance; detrital rutile; detrital zircon; eolian sediment; Fluence; Grain ID; Grain size, maximum; Grain size, minimum; Identification; LA-ICP-MS, Laser-ablation inductively coupled plasma mass spectrometer; LATITUDE; Lead; Lead-206; Lead-206/Lead-204 ratio; Lead-206/Uranium-238, error, relative; Lead-206/Uranium-238, standard deviation; Lead-206/Uranium-238 ratio; Lead-207/Lead-206 ratio; Lead-207/Lead-206 ratio, error, relative; Lead-207/Lead-206 ratio, standard deviation; Lead-207/Uranium-235, error, relative; Lead-207/Uranium-235, standard deviation; Lead-207/Uranium-235 ratio; Lithologic unit/sequence; LONGITUDE; Miocene; Pliocene; Preferred age; Provenance; Red Clay; Repetition rate; Sample ID; Sediment sample; SES; Spot size; Thorium; Uranium
    Type: Dataset
    Format: text/tab-separated-values, 53231 data points
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    DATA PANGAEA
  • 4
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    Detrital rutile trace element from the late Neogene Baode Red Clay sequence, Chinese Loess Plateau, and detrital rutile geochemistry from 14 potential source areas (2023)
    PANGAEA
    Details
    Publication Date: 2023-07-10
    Description: The data consist of detrital rutile trace element geochemistry of the 6.91–2.64 Ma Baode Red Clay (three samples from the Miocene Baode Formation, five samples from the Pliocene Jingle Formation, and one sample from the Transitional Unit) and 14 potential sedimentary source areas in Central-East Asia. The data were collected using Nu Plasma AttoM single collector ICP-MS (Nu Instruments Ltd., Wrexham, UK) connected to an Analyte Excite 193 ArF laser ablation system (Photon Machines, San Diego, USA) at the Geological Survey of Finland. The rutiles were analysed for Li, Mg, Al, Si, P, Ca, Sc, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Rb, Sr, Y, Zr, Nb, Mo, Sn, Sb, Ba, La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, Hf, Ta, W, Pb, Th, and U. The grain size fractions of the analysed grains were mostly 30–90 μm for the Red Clay zircons and rutiles, and 20–500 μm for the potential source area rutiles.
    Keywords: Age; Aluminium; Antimony; Badain_Jaran; Badain Jaran; Baode; Barium; Calcium; Central_Mu_Us; Central Mu Us; Cerium; Chinese Loess Plateau; Chromium; Cobalt; Copper; detrital rutile; detrital zircon; Dysprosium; East_Mu_Us; East Mu Us; eolian sediment; Erbium; Europium; Event label; Fluence; Gadolinium; Grain ID; Grain size, maximum; Grain size, minimum; Hafnium; Holmium; Identification; Iron; Junggar_Basin; Junggar Basin; LA-ICP-MS, Laser-ablation inductively coupled plasma mass spectrometer; Lanthanum; LATITUDE; Lead; Lithium; Lithologic unit/sequence; Location; LONGITUDE; Lutetium; Magnesium; Manganese; Miocene; Molybdenum; Mu_Us; Mu Us; Neodymium; Nickel; Niobium; Northeast_Tengger; Northeast Tengger; Phosphorus; Pliocene; Praseodymium; Provenance; Qaidam_Basin; Qaidam Basin; Qilian_Fan-branch_of_Shiyang_River; Qilian Fan - branch of Shiyang River; Red Clay; Repetition rate; Rubidium; Samarium; Sample ID; Scandium; Sediment sample; Sediment type; SES; Silicon; South_Tengger; South Tengger; Spot size; Strontium; Tantalum; Tarim_Basin; Tarim Basin; Terbium; Thorium; Thulium; Tin; Tungsten; Ulanbuh; Uranium; Vanadium; West_Mu_Us; West Mu Us; Yellow_River-Dari; Yellow_River-Zhenluo; Yellow River, Dari; Yellow River, Zhenluo; Ytterbium; Yttrium; Zinc; Zirconium
    Type: Dataset
    Format: text/tab-separated-values, 141298 data points
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    DATA PANGAEA
  • 5
    Electronic Resource
    Electronic Resource
    Relative importance of internal pressure and excluded-volume effects in resolution of network collapse problem (1983)
    s.l. : American Chemical Society
    Macromolecules 16 (1983), S. 672-678 
    Details
    ISSN: 1520-5835
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ma00238a034
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    Paper (German National Licenses)
    Fulltext
  • 6
    Electronic Resource
    Electronic Resource
    THE ECONOMIC FEASIBILITY OF DUAL PURPOSE NUCLEAR DESALINATION OF GROUND WATER (1979)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of the American Water Resources Association 15 (1979), S. 0 
    Details
    ISSN: 1752-1688
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Architecture, Civil Engineering, Surveying , Geography
    Notes: : The economic feasibility of a large scale dual purpose (desalting water and power production) facility were evaluated. Although a site in the Tularosa basin of southern New Mexico was chosen as a case study for this analysis, it is believed that the approach and consequential results would be applicable to alternative sites in the Southwest. The basic project evaluated included: a) a ground water well field; b) a dual purpose, nuclear, desalination plant; c) a mineral recovery plant; and d) a reservoir for recreation and irrigation storage. Principle project outputs included electrical power, minerals, recreation, and water for either irrigated agricultural production or export to an adjoining river basin. Two alternative project designs were developed for detailed analysis. The first alternative encompassed all major project components. The results, in discounted net values used to assess the feasibility of the project, were essentially negative; that is, values were less than zero for full scale development. The net benefits ranged from $-986.57 million at a 5 percent discount rate, to $-1,137.528 million at a discount rate of 10 percent. In the second alternative, exportation of the desalted water from the Tularosa basin to two adjacent rivers was analyzed with somewhat better net benefits, ranging from $-382,527 million to $-478,612 million at the 5 and 10 percent discount rates.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1752-1688.1979.tb01172.x
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    Paper (German National Licenses)
    Fulltext
  • 7
    Electronic Resource
    Electronic Resource
    WATER SUPPLY COSTS FOR SMALL PRIVATE UTILITIES (1991)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of the American Water Resources Association 27 (1991), S. 0 
    Details
    ISSN: 1752-1688
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Architecture, Civil Engineering, Surveying , Geography
    Notes: : This paper examines the cost of water supply for small and mid-sized private water utilities. An econometric approach was employed in which data on utility costs and characteristics were used to estimate a total water supply cost function from which average and marginal costs were derived. The results suggest that although average and marginal costs decline with output, the rate of decline rapidly approaches zero, and unit costs therefore appear to remain relatively constant over a wide range of output. Implications of the results for pricing policy are examined.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1752-1688.1991.tb01452.x
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    Paper (German National Licenses)
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  • 8
    Electronic Resource
    Electronic Resource
    FORECASTING INDUSTRIAL WATER UTILIZATION IN THE PETROLEUM REFINING SECTOR: AN OVERVIEW (1975)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of the American Water Resources Association 11 (1975), S. 0 
    Details
    ISSN: 1752-1688
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Architecture, Civil Engineering, Surveying , Geography
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1752-1688.1975.tb00667.x
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    Paper (German National Licenses)
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  • 9
    Electronic Resource
    Electronic Resource
    Association of trifluoroacetic acid in vapor and in organic solvents (1972)
    s.l. : American Chemical Society
    The @journal of physical chemistry 〈Washington, DC〉 76 (1972), S. 2039-2044 
    Details
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/j100658a023
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    Paper (German National Licenses)
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  • 10
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    Coupled European and Greenland last glacial dust activity driven by North Atlantic climate (2017)
    National Academy of Sciences
    Details
    Publication Date: 2017-11-27
    Description: Centennial-scale mineral dust peaks in last glacial Greenland ice cores match the timing of lowest Greenland temperatures, yet little is known of equivalent changes in dust-emitting regions, limiting our understanding of dust−climate interaction. Here, we present the most detailed and precise age model for European loess dust deposits to date, based on 125 accelerator mass spectrometry 14C ages from Dunaszekcső, Hungary. The record shows that variations in glacial dust deposition variability on centennial–millennial timescales in east central Europe and Greenland were synchronous within uncertainty. We suggest that precipitation and atmospheric circulation changes were likely the major influences on European glacial dust activity and propose that European dust emissions were modulated by dominant phases of the North Atlantic Oscillation, which had a major influence on vegetation and local climate of European dust source regions.
    Print ISSN: 0027-8424
    Electronic ISSN: 1091-6490
    Topics: Biology , Medicine , Natural Sciences in General
    Published by National Academy of Sciences
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    PAPER CURRENT
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