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Martínez-Santos, P.; Martínez-Alfaro, P.E. |
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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) |
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2014 |
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Journal of Cultural Heritage |
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15 |
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6 |
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656-664 |
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Hydraulic heritage, Qanat, Groundwater, Foggara, Water-supply, Amaniel, Madrid |
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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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THL @ christoph.kuells @ Martinezsantos2014656 |
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270 |
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Stone, A.E.C.; Edmunds, W.M. |
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Title |
Naturally-high nitrate in unsaturated zone sand dunes above the Stampriet Basin, Namibia |
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Journal Article |
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Year |
2014 |
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Journal of Arid Environments |
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105 |
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41-51 |
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Kalahari, Namibia, Nitrate in the unsaturated zone, Stampriet Basin, Transboundary basin, Unsaturated zone recharge |
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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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THL @ christoph.kuells @ Stone201441 |
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279 |
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Külls, C.; Jobin, J.; Weiler, M. |
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Title |
Environmental analytics for water carbon management: enable WCM: Schlussbericht |
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2015 |
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Albert Ludwigs Universität, Professur für Hydrologie |
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THL @ christoph.kuells @ Kuells2015environmental |
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65 |
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Severi, A.; Masoudian, M.; Kordi, E.; Roettcher, K. |
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Discharge coefficient of combined-free over-under flow on a cylindrical weir-gate |
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2015 |
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ISH Journal of Hydraulic Engineering |
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21 |
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1 |
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42-52 |
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Taylor & Francis |
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THL @ christoph.kuells @ doi:10.1080/09715010.2014.939503 |
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88 |
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Kharaka, Y.; Harmon, R.; Darling, G. |
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W. Mike Edmunds (1941–2015) |
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2015 |
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Applied Geochemistry |
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59 |
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225-226 |
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0883-2927 |
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THL @ christoph.kuells @ kharaka_w_2015 |
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103 |
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Silva, M.L. da; Bonotto, D.M. |
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Title |
Uranium isotopes in groundwater occurring at Amazonas State, Brazil |
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Journal Article |
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2015 |
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Applied Radiation and Isotopes |
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97 |
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24-33 |
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Amazon area, Dissolved uranium, Groundwater, Tube wells, U/U activity ratio |
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This paper reports the behavior of the dissolved U-isotopes 238U and 234U in groundwater providing from 15 cities in Amazonas State, Brazil. The isotope dilution technique accompanied by alpha spectrometry were utilized for acquiring the U content and 234U/238U activity ratio (AR) data, 0.01–1.4µgL−1 and 1.0–3.5, respectively. These results suggest that the water is circulating in a reducing environment and leaching strata containing minerals with low uranium concentration. A tendency to increasing ARs values following the groundwater flow direction is identified in Manaus city. The AR also increases according to the SW–NE directions: Uarini→Tefé; Manacapuru→Manaus; Presidente Figueiredo→São Sebastião do Uatumã; and Boa Vista do Ramos→Parintins. Such trends are possibly related to several factors, among them the increasing acid character of the waters. The waters analyzed are used for human consumption and the highest dissolved U content is much lower than the maximum established by the World Health Organization. Therefore, in view of this radiological parameter they can be used for drinking purposes. |
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0969-8043 |
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THL @ christoph.kuells @ silva_uranium_2015 |
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140 |
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Liesch, T.; Hinrichsen, S.; Goldscheider, N. |
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Title |
Uranium in groundwater — Fertilizers versus geogenic sources |
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Journal Article |
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2015 |
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Science of The Total Environment |
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536 |
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981-995 |
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Drinking water, Fertilizer, Geogenic background, Groundwater, Uranium |
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Due to its radiological and toxicological properties even at low concentration levels, uranium is increasingly recognized as relevant contaminant in drinking water from aquifers. Uranium originates from different sources, including natural or geogenic, mining and industrial activities, and fertilizers in agriculture. The goal of this study was to obtain insights into the origin of uranium in groundwater while differentiating between geogenic sources and fertilizers. A literature review concerning the sources and geochemical processes affecting the occurrence and distribution of uranium in the lithosphere, pedosphere and hydrosphere provided the background for the evaluation of data on uranium in groundwater at regional scale. The state of Baden-Württemberg, Germany, was selected for this study, because of its hydrogeological and land-use diversity, and for reasons of data availability. Uranium and other parameters from N=1935 groundwater monitoring sites were analyzed statistically and geospatially. Results show that (i) 1.6% of all water samples exceed the German legal limit for drinking water (10μg/L); (ii) The range and spatial distribution of uranium and occasional peak values seem to be related to geogenic sources; (iii) There is a clear relation between agricultural land-use and low-level uranium concentrations, indicating that fertilizers generate a measurable but low background of uranium in groundwater. |
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0048-9697 |
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THL @ christoph.kuells @ liesch_uranium_2015 |
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145 |
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Lach, P.; Cathelineau, M.; Brouand, M.; Fiet, N. |
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Title |
In-situ Isotopic and Chemical Study of Pyrite from Chu-Sarysu (Kazakhstan) Roll-front Uranium Deposit |
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Journal Article |
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2015 |
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Procedia Earth and Planetary Science |
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13 |
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207-210 |
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LA-ICP-MS, pyrite, roll-front, SIMS, sulfur isotopy, traces elements, uranium |
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Pyrite is common in roll-front type uranium deposit in Chu-sarysu basin, Kazakhstan. Combined in-situ microstructural, isotopic and chemical analysis of pyrite indicates variation in precipitation conditions and in fluid composition. Broad-scale δ34S heterogeneity indicates a complex multi-facet evolution. First generation authigenic framboïdal aggregates are biogenic as demonstrated by the lowest δ34S values of -48‰ to -28‰. The latest generation pyrites are probably hydrothermal with greater δ34S variation (-30‰ to +12‰). This hydrothermal pyrite commonly displays variable enrichment of several trace elements especially As, Co and Ni. Strong variation in δ34S values and variable trace element enrichment is interpreted in terms of continuous variations in fluid composition. |
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1878-5220 |
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THL @ christoph.kuells @ lach_-situ_2015 |
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182 |
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Hamidian, A.; Ghorbani, M.; Abdolshahnejad, M.; Abdolshahnejad, A. |
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Title |
RETRACTED: Qanat, Traditional Eco-technology for Irrigation and Water Management |
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Journal Article |
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2015 |
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Agriculture and Agricultural Science Procedia |
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4 |
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119-125 |
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This article has been retracted: please see Elsevier Policy on Article Withdrawal (https://www.elsevier.com/about/our-business/policies/article-withdrawal). This article has been retracted at the request of Editor. The authors have plagiarized part of a book Veins of Desert, by Semsar Yazdi, Ali Asghar; Labbaf Khaneiki, Majid published by UNESCO-ICQHS, 2010 pages 2, 3, 5, 6, 7, 11, 44, 156, 157 and 158. One of the conditions of submission of a paper for publication is that authors declare explicitly that their work is original and has not appeared in a publication elsewhere. Re-use of any data should be appropriately cited. |
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2210-7843 |
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Efficient irrigation management and its effects in urban and rural landscapes |
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THL @ christoph.kuells @ Hamidian2015119 |
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252 |
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Author |
Abiye, T. |
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Title |
Synthesis on groundwater recharge in Southern Africa: A supporting tool for groundwater users |
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Journal Article |
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2016 |
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Groundwater for Sustainable Development |
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2-3 |
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182-189 |
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Arid and semi-arid areas, Groundwater recharge, Recharge estimation methods, Southern Africa |
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This synthesis on groundwater recharge targets the Southern African region as a result of the dependence of the community and economic sector on the groundwater resource. Several literature based recharge studies were collected and assessed in order to find out the main controls to the occurrence of recharge. The Water Table Fluctuation and Base flow separation methods have been tested in the catchment that drains crystalline basement rocks and dolostones close to the city of Johannesburg, South Africa. Based on the assessed data the Chloride Mass Balance method resulted in groundwater recharge of less than 4% of the rainfall, while it reaches 20%, when rainfall exceeds 600mm. For the classical water balance method, recharge proportion is less than 3% of rainfall as a result of very high ambient temperature in the region. Based on the Saturated Volume Fluctuation and Water Table Fluctuation methods, recharge could be less than 6% for annual rainfall of less than 600mm. Observational results further suggest that sporadic recharge from high intensity rainfall has important contribution to the groundwater recharge in the region, owing to the presence of permeable geological cover, which could not be fully captured by most of the recharge estimation methods. This study further documents an evaluation of the most reliable recharge estimation methods in the area such as the chloride mass balance, saturated volume fluctuation and water table fluctuation methods in order to successfully manage the groundwater resource. |
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2352-801x |
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THL @ christoph.kuells @ abiye_synthesis_2016 |
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101 |
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