A model-based estimate of the groundwater budget and associated uncertainties in Bengaluru, India
A model-based estimate of the groundwater budget and associated uncertainties in Bengaluru, India
复制标题
印度班加罗尔地下水预算和相关不确定性的基于模型的估计
DOI：
10.1080/1573062x.2020.1836237
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发表时间：
2020
影响因子：
2.7
通讯作者：
V. Mehta
中科院分区：
文献类型：
--
作者：
S. K. Tomer;M. Sekhar;K. Balakrishnan;D. Malghan;S. Thiyaku;M. Gautam;V. Mehta
摘要了解发展中国家城市的水代谢是具有挑战性的，因为缺乏足够的知识，如何社会，基础设施和水文方面的耦合。使用印度的Bengalu市，我们展示了精细分辨率数据如何为基于模型的城市地下水预算估计提供信息。2016年在154个地点测量了地下水位，并用于估计模型参数和不确定性。总用水量估计为每天14.7亿升（MLD）。地下水泵满足了大部分的用水需求（827 MLD），其次是公用事业供水（643 MLD）。总补给量估计为973 MLD。自然补给量（183 MLD）远小于供水和废水系统泄漏造成的人为补给量（791 MLD）。该市经历了地下水净负平衡（40 MLD）。自然补给和总用水量估计显示不确定性较低。这些通量的空间变化的描述和相关的二次信息。
ABSTRACT Understanding the water metabolism of developing country cities is challenging because of insufficient knowledge of how social, infrastructural and hydrological dimensions are coupled. Using Bengaluru City in India, we demonstrate how fine-resolution data can inform model-based estimates of urban groundwater budgets. Groundwater levels were measured at 154 locations in 2016 and used to estimate model parameters and uncertainty. Total water use was estimated at 1470 million litres per day (MLD). Groundwater pumping meets the majority of this use (827 MLD), followed by utility water supply (643 MLD). Total recharge was estimated at 973 MLD. Natural recharge is a much smaller portion (183 MLD) compared to anthropogenic recharge from leaking water supply and wastewater systems (791 MLD). The city experienced a net negative groundwater balance (40 MLD). Natural recharge and total water use estimates showed lower uncertainty. Spatial variation in these fluxes is described and related to secondary information.