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| Content Provider | Springer Nature Link |
|---|---|
| Author | Biggs, Andrew J. W. |
| Copyright Year | 2011 |
| Abstract | Salt accessions from artesian and sub-artesian bores have been calculated for the Queensland Murray-Darling Basin (QMDB), Australia, using available water chemistry, licensing data and a number of assumptions. The majority (~90%) of the salt accessions come from sub-artesian bores used for irrigation (including intensive livestock) purposes. Historically, free-flowing artesian bores in the west of the basin have contributed large quantities of salt, but their contributions have declined with capping and piping of these bores. The highest salt yields (t/km$^{2}$) are in the Condamine catchment, which also contains 70% of the bores in the region. Groundwater salt accessions are considerably less than atmospheric (rainfall) accessions in all catchments except the Condamine. Further expansion of the coal seam gas industry may substantially increase non-cyclic groundwater accessions, further reducing catchment salt export/import ratios.Les apports de sel par forages artésiens et artésiens non jaillissants ont été calculés pour le bassin Murray-Darling en Queensland (QMDB), Australie, en utilisant chimie de l’eau, données réglementaires et plusieurs hypothèses. La majorité (~90%) des apports de sel vient de forages artésiens non jaillissants utilisés pour l’irrigation (incluant cheptel vif). Historiquement, les forages jaillissants de l’Ouest du bassin ont apporté de grandes quantités de sel, mais leur apport a décliné avec leur fermeture et leur tubage. Les apports de sel les plus élevés (t/km$^{2}$) sont sur le bassin versant de Condamine, qui présente aussi 70% des forages de la région. Les apports salins par l’eau de nappe sont considérablement inférieurs aux apports atmosphériques (précipitations) dans tous les bassins, sauf celui de Condamine. De nouveaux développements de l’industrie du gaz de houille peuvent sensiblement accroître les apports non-cycliques de nappe, réduisant d’avantage les ratios export/import de sel.Se ha calculado el acceso de sal de pozos artesianos y subartesianos en la Cuenca Queensland Murray-Darling (QMDB), Australia, usando la química del agua disponible, datos con licencia y una serie de supuestos. La mayoría (~90%) de los accesos de sal provienen de pozos subartesianos usados para propósitos de irrigación (incluida la ganadería intensiva). Históricamente, los pozos artesianos de flujo libre en el oeste de la cuenca han contribuido con grandes cantidades de sal, pero sus contribuciones han disminuido con el taponamiento y entubamiento de estos pozos. Las producciones más altas de sal (t/km$^{2}$) están en la cuenca Condamine, la cual también contiene el 70% de los pozos de la región. Los accesos de agua subterránea salada son considerablemente menos que los accesos atmosféricos (precipitaciones) en todas las cuencas a excepción de la Condamine. Una expansión ulterior de la industria del gas de las vetas de carbón puede incrementar sustancialmente los accesos de agua subterránea no cíclicas, reduciendo ulteriormente los cocientes exportaciones / importaciones de sal en la cuenca.利用现有水化学、许可申请资料和一些假设条件,作者计算了自流孔和次自流孔给澳大利亚昆士兰墨累-达令盆地(QMDB)造成的盐分累积。大部分盐(约90%)来自于用于灌溉(包括集约化畜牧)的次自流井。历史上,自由流动的自流孔向盆地西部贡献了大量盐分。而后期封孔和对自流孔的管道化处理,自流孔贡献的盐分也随之减少。康达明流域是产盐量最高的地区(t/km$^{2}$),盆地内70%的井孔分布在该流域。除康达明流域外,地下水盐分累积量显著低于大气(降雨)带来的盐。 煤层气工业的进一步扩展可能导致不循环的地下水大幅度增加,进而减少流域内盐分输出/输入的比例。Foi estudada a salinização a partir de furos artesianos e sub-artesianos na Bacia de Murray-Darling, em Queensland (QMDB), na Austrália, usando análises químicas das águas disponíveis, dados de licenciamento e um determinado número de hipóteses assumidas. A maioria (~90%) da salinização provém de furos sub-artesianos usados para rega (incluindo criação intensiva de gado). Historicamente, os furos artesianos que fluíam livremente na parte oeste da bacia contribuíram com grandes quantidades de sais, mas as suas contribuições entraram em declínio com a colocação de protecções na cabeça dos furos e com o entubamento das suas águas. As maiores cargas salinas (t/km$^{2}$) situam-se na bacia de Condamine, a qual contém também 70% dos furos da região. A salinização com origem em águas subterrâneas é consideravelmente inferior à atmosférica (precipitação) em todas as bacias hidrográficas, excepto a de Condamine. A futura expansão da indústria do gas natural em camada carbonífera pode aumentar substancialmente a carga salina não cíclica a partir de águas subterrâneas, reduzindo então a relação exportação/importação de sais na bacia. |
| Starting Page | 719 |
| Ending Page | 726 |
| Page Count | 8 |
| File Format | |
| ISSN | 14312174 |
| Journal | Hydrogeology Journal |
| Volume Number | 19 |
| Issue Number | 3 |
| e-ISSN | 14350157 |
| Language | Portuguese |
| Publisher | Springer-Verlag |
| Publisher Date | 2011-03-15 |
| Publisher Institution | International Association of Hydrogeologists |
| Publisher Place | Berlin, Heidelberg |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Australia Murray-Darling Basin Groundwater statistics Salinity Geology Waste Water Technology Water Pollution Control Water Management Aquatic Pollution Hydrogeology |
| Content Type | Text |
| Resource Type | Article |
| Subject | Earth and Planetary Sciences Water Science and Technology |
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