| Records |
| Author |
Müller, M.; Alaoui, A.; Külls, C.; Leistert, H.; Meusburger, K.; Stumpp, C.; Weiler, M.; Alewell, C. |
| Title |
Tracking water pathways in steep hillslopes by δ18O depth profiles of soil water |
Type |
Journal Article |
| Year |
2014 |
Publication |
Journal of hydrology |
Abbreviated Journal |
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| Volume |
519 |
Issue  |
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Pages |
340-352 |
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Elsevier |
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| Call Number |
THL @ christoph.kuells @ Mueller2014tracking |
Serial |
20 |
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| Author |
Gaj, M.; Beyer, M.; Hamutoko, J.; Uugulu, S.; Wanke, H.; Koeniger, P.; Külls, C.; Lohe, C.; Himmelsbach, T. |
| Title |
How do soil types affect stable isotope ratios of 2H and 18O under evaporation: A Fingerprint of the Niipele subbasin of the Cuvelai-Etosha basin, Namibia |
Type |
Conference Article |
| Year |
2014 |
Publication |
EGU Geophysical Abstracts |
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Issue |
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Pages |
5890 |
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THL @ christoph.kuells @ Gaj2014soil |
Serial |
44 |
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| Author |
Joseph, J.; Külls, C. |
| Title |
Calibration of 13C and 18O measurements in CO2 using Off-axis Integrated Cavity Output Spectrometer (ICOS) |
Type |
Conference Article |
| Year |
2014 |
Publication |
EGU Geophysical Abstracts |
Abbreviated Journal |
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Issue |
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Pages |
659 |
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THL @ christoph.kuells @ Joseph2014calibration |
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45 |
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| Author |
Külls, C.; Nunes, A.; Köbel-Batista, M.; Branquinho, C.; Bianconi, N.; Costantini, E. |
| Title |
Integrated use of soil physical and water isotope methods for ecohydrological characterization of desertified areas |
Type |
Conference Article |
| Year |
2014 |
Publication |
EGU Geophysical Abstracts |
Abbreviated Journal |
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Issue |
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Pages |
15430 |
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THL @ christoph.kuells @ Kuells2014integrated |
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46 |
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Külls, C. |
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Ecohydrological principles in economic models of water resources in drylands and desert restoration |
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Miscellaneous |
| Year |
2014 |
Publication |
UNCCD, 2nd Scient. Conf. |
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THL @ christoph.kuells @ Kuells2014ecohydrological |
Serial |
68 |
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| Author |
Stone, A.E.C.; Edmunds, W.M. |
| Title |
Naturally-high nitrate in unsaturated zone sand dunes above the Stampriet Basin, Namibia |
Type |
Journal Article |
| Year |
2014 |
Publication |
Journal of Arid Environments |
Abbreviated Journal |
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| Volume |
105 |
Issue |
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Pages |
41-51 |
| Keywords |
Kalahari, Namibia, Nitrate in the unsaturated zone, Stampriet Basin, Transboundary basin, Unsaturated zone recharge |
| Abstract |
Elevated groundwater nitrate levels are common in drylands, often in excess of WHO guidelines, with concern for human and animal health. In light of recent attempts to identify nitrate sources in the Kalahari this paper presents the first unsaturated zone (USZ) nitrate profiles and recharge rate estimates for the important transboundary Stampriet Basin, alongside the first rainfall chemistry records. Elevated subsurface nitrate reaches 100–250 and 250–525 mg/L NO3–N, with NO3–N/Cl of 4–12, indicating input above evapotranspiration. Chloride mass balance recharge rates range from 4 to 27 mm/y, indicating a vertical movement of these nitrate pulses toward the water table over multi-decadal timescales. These profiles are sampled from dune crests, away from high concentrations of animals and without termite mounds. Given low-density animal grazing is unlikely to contribute consistent spot-scale nitrate over decades, these profiles give an initial estimate of naturally-produced concentrations. This insight is important for the management of the Stampriet Basin and wider Kalahari groundwater. This study expands our knowledge about elevated nitrate in dryland USZs, demonstrating that it can occur as pulses, probably in response to transient vegetation cover and that it is not limited to long-residence time USZs with very limited downward moisture flux (recharge). |
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0140-1963 |
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no |
| Call Number |
THL @ christoph.kuells @ Stone201441 |
Serial |
218 |
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| Author |
Martínez-Santos, P.; Martínez-Alfaro, P.E. |
| Title |
A priori mapping of historical water-supply galleries based on archive records and sparse material remains. An application to the Amaniel qanat (Madrid, Spain) |
Type |
Journal Article |
| Year |
2014 |
Publication |
Journal of Cultural Heritage |
Abbreviated Journal |
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| Volume |
15 |
Issue |
6 |
Pages |
656-664 |
| Keywords |
Hydraulic heritage, Qanat, Groundwater, Foggara, Water-supply, Amaniel, Madrid |
| Abstract |
Engineering heritage refers to a broad variety of items of social, economic, aesthetic or historic relevance, including roads, dams, buildings and supply networks. Due to their utilitarian nature, their heritage value is often overlooked. This occurs even with those infrastructures that have played an essential role in underpinning the daily existence of entire civilizations. Underground water-supply networks provide an excellent example. Although there are exceptions, water networks tend to be functional in design, rather than monumental. Moreover, they present intricate linear layouts that often span several kilometres. This means they are costly to maintain once their operational life is over, and that they are prone to abandonment and destruction. Devising a priori protection strategies is important to preserve these valuable cultural assets. The following pages present a method to map linear structures based on archive records and sparse material remains. The method is illustrated through its application to the Amaniel qanat, a water-supply gallery built in Madrid, Spain, in the early 17th Century. An appraisal of the known remains was carried out first, leading to an inventory of galleries, shafts, shaft caps and deposits. This was followed by a thorough survey of over one thousand handwritten manuscripts, including physical descriptions of the aqueduct, budget accounts or water metering campaigns, among other documents. Known remains and written evidence were matched against original and auxiliary maps to reconstruct the itinerary of the aqueduct. This led to the identification of sectors where it is still possible to find remains in good condition. Thus, a priori mapping is advocated a valuable technique to locate and preserve these remains, as well as to devise non-invasive surveys and establish heritage protection zones. |
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1296-2074 |
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Approved |
no |
| Call Number |
THL @ christoph.kuells @ Martinezsantos2014656 |
Serial |
270 |
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