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1.
《地学前缘(英文版)》2022,13(4):101383
Groundwater is an important water resource. The total amount of active groundwater in a hydrological cycle is about 3.5 times that of the total amount of surface water. The information in the deep groundwater records the material exchange and dynamics in the earth’s evolution, which is an important aspect of the Deep-Time Digital Earth (DDE) plan. In recent years, scientists have discussed the distribution of transboundary aquifers and the environmental significance of groundwater resources through groundwater databases established by international organizations, such as the Global Groundwater Information System and the chronicles consortium, and national institutes, such as national geological surveys. The application of the groundwater database in the DDE plan, however, has been limited by the management, interactivity, and monitoring method of the groundwater data. The ability to further integrate data that are private and scattered across research institutions and individuals, while establishing an open, unified, and shared groundwater data platform, is essential to enhance our understanding of groundwater, ranging from shallow to deep water, which is a goal of the DDE plan. In this study, we introduced the current situation of groundwater database operations in domestic and international research and provided frontier research with groundwater big data. Considering the related objectives of the DDE plan and the limitations of existing groundwater databases, we proposed an improvement plan and new prospects for applying groundwater databases in the research of the deep earth. 相似文献
2.
To develop sustainable groundwater management strategies, generally coupled simulation-optimization (SO) models are used. In this study, a new SO model is developed by coupling moving least squares (MLS)-based meshless local Petrov-Galerkin (MLPG) method and modified artificial bee colony (MABC) algorithm. The MLPG simulation model utilizes the advantages of meshless methods over the grid-based techniques such as finite difference (FDM) and finite element method (FEM). For optimization, the basic artificial bee colony algorithm is modified to balance the exploration and exploitation capacity of the model more effectively. The performance of the developed MLPG-MABC model is investigated by applying it to hypothetical and field problems with three different management scenarios. The model results are compared with other available SO model solutions for its accuracy. Further, sensitivity analyses of various model parameters are carried out to check the robustness of the SO model. The proposed model gave quite promising results, showing the applicability of the present approach. 相似文献
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The use of environmental tracers to characterise time scales when investigating groundwater is a technology that has been in use for half a century. Its usefulness is beyond controversy. However, the use of the word “age” for groundwater connected with these techniques is misleading due to its inherent connection to the general understanding of human age. “Age” as in the understanding of human age cannot be determined for groundwater, although it is a useful zero-order concept abundantly used in this context. This paper describes three basic definitions of “age” for groundwater ((1) idealized age as in particle tracking and piston flow, (2) mean residence time involving an age distribution and (3) apparent age) and discusses their context in view of recent developments in numerical groundwater modelling. It further gives arguments why the term “age” is unnecessary in modern hydrology and groundwater management and how not using it can enhance efficiency in system understanding: not using age needs less modelling effort and allows comparing models directly with measured values instead of comparing models with models. 相似文献
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6.
Land use change modelling: current practice and research priorities 总被引：39，自引：0，他引：39
Land use change models are tools to support the analysis of the causes and consequences of land use dynamics. Scenario analysis with land use models can support land use planning and policy. Numerous land use models are available, developed from different disciplinary backgrounds. This paper reviews current models to identify priority issues for future land use change modelling research. This discussion is based on six concepts important to land use modelling: (1) Level of analysis; (2) Cross-scale dynamics; (3) Driving forces; (4) Spatial interaction and neighbourhood effects; (5) Temporal dynamics; and (6) Level of integration. For each of these concepts an overview is given of the variety of methods used to implement these concepts in operational models. It is concluded that a lot of progress has been made in building land use change models. However, in order to incorporate more aspects important to land use modelling it is needed to develop a new generation of land use models that better address the multi-scale characteristics of the land use system, implement new techniques to quantify neighbourhood effects, explicitly deal with temporal dynamics and achieve a higher level of integration between disciplinary approaches and between models studying urban and rural land use changes. If these requirements are fulfilled models will better support the analysis of land use dynamics and land use policy formulation. 相似文献
7.
Over the world, a majority of water resources are managed by small- and medium-sized companies. Despite having limited personnel and financial resources, these companies have to ensure their groundwater management contains adequate quality control. This is an objective that any company can achieve with the means at its disposal, by using the continuous improvement method. In contrast to the technical approaches mainly used, which focus on the aquifer and the groundwater, the method presented in this article is specifically geared towards the individual conditions of the company extracting the water. A method of sustainable groundwater management is steadily built up by starting with the resources a company has available. The advantage of this approach is that any company, with its financial and personal resources, can achieve suitable groundwater by doing as much as it can within the bounds of its possibilities. Instead of calling in expensive external experts for a short period, the continuous improvement method calls at first for the participation of the companys employees and others involved. The aim is, ultimately, for learning organizations to be able to actively develop their own quality assurance strategies. The method introduced also enables a number of different water suppliers to collaborate within a network. Moreover, usage of the same guidelines allows international comparison. The continuous improvement of groundwater quality covers three scopes: groundwater extraction, groundwater protection, and the groundwater management system. In the following, the management system is based on sections from the International Standardization Organization (ISO 9001:2000) international quality management standard. The method is described using the example of mineral water and spa companies, which are often subject to difficult hydrogeological conditions. 相似文献
8.
P. D. Sreekanth P. D. Sreedevi Shakeel Ahmed N. Geethanjali 《Environmental Earth Sciences》2011,62(6):1301-1310
Prediction of water level is an important task for groundwater planning and management when the water balance consistently
tends toward negative values. In Maheshwaram watershed situated in the Ranga Reddy District of Andhra Pradesh, groundwater
is overexploited, and groundwater resources management requires complete understanding of the dynamic nature of groundwater
flow. Yet, the dynamic nature of groundwater flow is continually changing in response to human and climatic stresses, and
the groundwater system is too intricate, involving many nonlinear and uncertain factors. Artificial neural network (ANN) models
are introduced into groundwater science as a powerful, flexible, statistical modeling technique to address complex pattern
recognition problems. This study presents the comparison of two methods, i.e., feed-forward neural network (FFNN) trained
with Levenberg–Marquardt (LM) algorithm compared with a fuzzy logic adaptive network-based fuzzy inference system (ANFIS)
model for better accuracy of the estimation of the groundwater levels of the Maheshwaram watershed. The statistical indices
used in the analysis were the root mean square error (RMSE), regression coefficient (R
2) and error variation (EV).The results show that FFNN-LM and ANFIS models provide better accuracy (RMSE = 4.45 and 4.94, respectively,
R
2 is 93% for both models) for estimating groundwater levels well in advance for the above location. 相似文献
9.
Sarva Mangala Praveena Mohd Harun Abdullah Kawi Bidin Ahmad Zaharin Aris 《Environmental Earth Sciences》2012,66(3):719-728
Numerical models are capable of simulating various groundwater scenarios and relate it towards groundwater management. This
paper focuses on numerical modeling and water balance approaches in the search for a sustainable management plan in Manukan
Island. The impacts of pumping and recharge rates represented by groundwater scenarios were investigated by means of hydraulic
heads, chloride concentrations and water balance components. Overpumping and inconsistency in recharge rate are the stresses
shown in Scenario A. Scenario B involved with reduction pumping rate by 25% has shown an increase in groundwater levels, chloride
concentration and groundwater storage. Scenario C showed the most promising finding compared with Scenarios A and B. Highest
hydraulic heads, lowest chloride concentration (1,552.2 mg/L) and positive groundwater storage (254.3 m3/day) were obtained in Scenario C. Chloride concentration in pumping wells still exceeds World Health Organization International
Standard limit in Scenario C which illustrates an additional water treatment is needed. Nevertheless, in view of a compromise
groundwater management plan in study area, Scenario C is the best plan so far to protect the groundwater resources in the
study area. More understanding of the artificial recharge method (percolation tank) and study site by means of modeling studies
is needed. Additionally, further progress is needed in obtaining the water usage data from each part to determine the best
pumping rate. A sustainable groundwater management plan is crucial to maintain the natural resources and social benefits as
well as to protect the ecological balance of Manukan Island. 相似文献
10.
B. M. S. Giambastiani A. M. McCallum M. S. Andersen B. F. J. Kelly R. I. Acworth 《Hydrogeology Journal》2012,20(6):1027-1044
A FEFLOW three-dimensional (3D) groundwater model is developed to enhance the understanding of groundwater processes in the complex alluvial stratigraphy of Maules Creek Catchment (New South Wales, Australia). The aquifer vertical heterogeneity is replicated by indexing 204 lithological logs into units of high or low hydraulic conductivity, and by developing a 3D geological conceptual model with a vertical resolution based on the average lithological unit thickness for the region. The model mesh is populated with the indexed geology using nearest neighbour gridding. The calibrated model is successful in simulating the observed flow dynamics and in quantifying the important water-budget components. This indicates that the lateral groundwater flow from the mountainous region is the main inflow component of the system. Under natural conditions, the Namoi River acts as a sink of water, but groundwater abstraction increasingly removes a large amount of water each year causing dewatering of the system. The pumping condition affects the river–aquifer interaction by reversing the flow, from gaining to losing river conditions during the simulation period. The procedure is relevant for the development of groundwater models of heterogeneous systems in order to improve the understanding of the interplay between aquifer architecture and groundwater processes. 相似文献
11.
Through system design and analysis from the aspects of entity categories, hierarchical design, attribute design, and the final function design and realization of the system, this paper develops a software application based on Arc-view platform with a view to solving the deficiencies of conventional groundwater dynamic management in managing the spatial graphics data. Using this application into the supporting automatic monitoring system of groundwater level helps to achieve the automatic analysis of attribute data, and offer a new, visual and efficient automated management tool. Moreover, the computer geospatial modeling can realize the quick query and spatial analysis of geographic information, and thus facilitating dynamic simulation and prediction of the research object. However, a multi-functional, multi-level groundwater level information management system is a complex system engineering, which requires continuous improvement of the structure, development of functions, and supplement of user models. 相似文献
12.
NPGA-GW在地下水系统多目标优化管理中的应用 总被引：7，自引：0，他引：7
在地下水系统管理问题中,涉及到多个相互冲突的目标函数常常被简化为不同形式的单一目标函数来求解,这种通过单一目标函数的优化方法只能给出一个解,由此确定的方案有时会违背决策者的意愿。而通过多目标优化方法可以得到一系列供决策者权衡选择的解集。将地下水流模拟程序MODFLOW 和溶质运移模拟程序MT3DMS 相耦合,采用基于小生境技术的Pareto 遗传算法进行求解,开发了一个用于地下水系统多目标管理的应用程序NPGA-GW。并将该程序应用于一个二维地下水污染修复问题的多目标优化求解,结果表明,该程序能够在较短的时间内得到一系列Pareto 最优解,解的跨度足够决策者进行适当的选择,具有很好的应用前景。 相似文献
13.
本文论述了水文地质结构系统的基本思想以及建立水文地质结构系统模型的基本方法。具体研究了山西省太原地区的岩溶水文地质结构系统,将研究区划分为三个既相对独立又有一定联系的岩溶地下水亚系统,并分别建立了三个岩溶地下水亚系统的结构模型,即以多维脉络、三维层络、多层网络这些几何物理模型描述了该区岩溶地下水系统的四维特征;同时,对区内岩溶地下水资源的合理开发利用提出了具体方案。 相似文献
14.
基于GIS的地下水模拟可视化系统开发的初步探讨 总被引：7，自引：2，他引：7
系统开发的目的是克服GIS时空分析能力的不足，实现地下水模型与MAPGIS的耦合集成，在集成的基础上构建系统的可视化功能，在GIS平台上为地下水模拟的全过程提供一个统一高效的计算机环境。系统开发采用面向对象的软件开发方法，对各种地下水模型进行分解、抽象，建立基本的C＋＋类类型，每个模型都是基本类及其派生类对象的聚集类。系统实现的技术途径是以MAPGIS的二次开发函数作为“后台”支持，以VC＋＋作为编程工具，在充分利用MAPGIS的可视化功能的基础上，借助于OpenGL并应用科学可视化技术开发更能满足地下水模拟需要的可视化功能。 相似文献
15.
In terms of the research on groundwater–surface water heat-tracing methods, investigation of the interactions within the compound system of the groundwater–surface water–hyporheic zone can effectively reveal the relevant physicochemical processes and microbial properties. The evaluation of these properties represents a key component in qualitative and quantitative research on groundwater–surface water interactions. Therefore, this paper reviews the research results on groundwater–surface water interactions achieved by related researchers using heat as a natural tracer over the last decade. In connection with the application of heat-tracing theory to the basic principles of hyporheic exchange between groundwater and surface water, research on groundwater–surface water interaction through one-dimensional steady-state and transient-state heat transport analytical models, techniques to collect and analyze temperature time series data, and numerical simulation technology is reviewed. In addition, directions for future research using groundwater–surface water heat-tracing methods are suggested. First, hypothetical, difficult temperature boundary and hydrogeological conditions require further research. Second, hydrodynamic exchange capacity and the processes of heat exchange and solute concentration exchange in the hyporheic zone alongside riverbeds should be appropriately and accurately measured under multi-scale influences. Third, the overall study of the heat transport process inside the hyporheic zone induced by complex riverbed forms should be performed, and the response mechanism of riverbed hyporheic exchanges driven by riverbed form, the hydrodynamic force of surface water, and sediment permeability should be revealed. The objectives and goals of this paper are to encourage scholars interested in analyzing groundwater–surface water interactions using heat as a tracer to creatively solve practical problems and to improve the ecological functions of river aquatic habitats through new research results. 相似文献
16.
Giovanna De Filippis Laura Foglia Mauro Giudici Steffen Mehl Stefano Margiotta Sergio L. Negri 《Hydrogeology Journal》2017,25(7):2123-2138
The evaluation of the accuracy or reasonableness of numerical models of groundwater flow is a complex task, due to the uncertainties in hydrodynamic properties and boundary conditions and the scarcity of good-quality field data. To assess model reliability, different calibration techniques are joined to evaluate the effects of different kinds of boundary conditions on the groundwater flow in a coastal multi-layered aquifer in southern Italy. In particular, both direct and indirect approaches for inverse modeling were joined through the calibration of one of the most uncertain parameters, namely the hydraulic conductivity of the karst deep hydrostratigraphic unit. The methodology proposed here, and applied to a real case study, confirmed that the selection of boundary conditions is among the most critical and difficult aspects of the characterization of a groundwater system for conceptual analysis or numerical simulation. The practical tests conducted in this study show that incorrect specification of boundary conditions prevents an acceptable match between the model response to the hydraulic stresses and the behavior of the natural system. Such effects have a negative impact on the applicability of numerical modeling to simulate groundwater dynamics in complex hydrogeological situations. This is particularly important for management of the aquifer system investigated in this work, which represents the only available freshwater resource of the study area, and is threatened by overexploitation and saltwater intrusion. 相似文献
17.
Lina Mi Honglang Xiao Jianming Zhang Zhenliang Yin Yongping Shen 《Hydrogeology Journal》2016,24(4):971-986
Investigation of the evolution of the groundwater system and its mechanisms is critical to the sustainable management of water in river basins. Temporal and spatial distributions and characteristics of groundwater have undergone a tremendous change with the intensity of human activities in the middle reaches of the Heihe River Basin (HRB), the second largest arid inland river basin in northwestern China. Based on groundwater observation data, hydrogeological data, meteorological data and irrigation statistical data, combined with geostatistical analyses and groundwater storage estimation, the basin-scaled evolution of the groundwater levels and storage (from 1985 to 2013) were investigated. The results showed that the unbalanced allocation of water sources and expanded cropland by policy-based human activities resulted in the over-abstraction of groundwater, which induced a general decrease in the water table and groundwater storage. The groundwater level has generally fallen from 4.92 to 11.49 m from 1985 to 2013, especially in the upper and middle parts of the alluvial fan (zone I), and reached a maximum depth of 17.41 m. The total groundwater storage decreased by 177.52?×?108 m3; zone I accounted for about 94.7 % of the total decrease. The groundwater balance was disrupted and the groundwater system was in a severe negative balance; it was noted that the groundwater/surface-water interaction was also deeply affected. It is essential to develop a rational plan for integration and management of surface water and groundwater resources in the HRB. 相似文献
18.
Thomas Kalbacher Jens-Olaf Delfs Haibing Shao Wenqing Wang Marc Walther Luis Samaniego Christoph Schneider Rohini Kumar Andreas Musolff Florian Centler Feng Sun Anke Hildebrandt Rudolf Liedl Dietrich Borchardt Peter Krebs Olaf Kolditz 《Environmental Earth Sciences》2012,65(5):1367-1380
Numerical modeling of interacting flow and transport processes between different hydrological compartments, such as the atmosphere/land surface/vegetation/soil/groundwater systems, is essential for understanding the comprehensive processes, especially if quantity and quality of water resources are in acute danger, like e.g. in semi-arid areas and regions with environmental contaminations. The computational models used for system and scenario analysis in the framework of an integrated water resources management are rapidly developing instruments. In particular, advances in computational mathematics have revolutionized the variety and the nature of the problems that can be addressed by environmental scientists and engineers. It is certainly true that for each hydro-compartment, there exists many excellent simulation codes, but traditionally their development has been isolated within the different disciplines. A new generation of coupled tools based on the profound scientific background is needed for integrated modeling of hydrosystems. The objective of the IWAS-ToolBox is to develop innovative methods to combine and extend existing modeling software to address coupled processes in the hydrosphere, especially for the analysis of hydrological systems in sensitive regions. This involves, e.g. the provision of models for the prediction of water availability, water quality and/or the ecological situation under changing natural and socio-economic boundary conditions such as climate change, land use or population growth in the future. 相似文献
19.
Variations in pore-water pressure determined by the groundwater table within a riverbank have been investigated and recognized
as an essential factor in determining riverbank stability with respect to mass failure. However, the effect of pore-water
pressure is taken into account for most of the existing riverbank stability models under some simplified assumptions, and
the limitations of predicting ability may arise. To avoid the unrealistic estimation of pore-water pressure distribution,
the new approach proposed here is to couple riverbank stability with groundwater flow modeling, and apply this to tackle the
conjunction effect between river stage and groundwater table. Moreover, riverbank material characteristics and the influence
of infiltration can be taken into consideration via groundwater flow modeling. Two hypothetical examples, stage rising and
stage falling, are used to investigate the capabilities of the present study and two representative methods. The simulated
results show that riverbank failure is triggered particularly during the falling stage, which has been pointed out by other
researchers as well. Furthermore, the riverbank material characteristics predominantly control the occurrence of failure and
should be considered regarding assessment of riverbank stability. Additionally, the effects of parameters indicate that riverbanks
with soil properties of low permeability or high specific yield with great infiltration intensity during the falling stage
have a tendency to riverbank failure. 相似文献
20.
H. Aguilera S. Castaño L. Moreno M. E. Jiménez-Hernández A. de la Losa 《Hydrogeology Journal》2013,21(3):623-641
Las Tablas de Daimiel National Park (TDNP) in Spain is one of the most important semiarid wetlands of the Mediterranean area. The inversion of the regional groundwater flow, primarily due to overexploitation and inadequate aquifer management, has led to degradation. The system has turned from a groundwater discharge zone into a recharge zone, and has remained mostly dry since the 1980s. High heterogeneity and complexity, enhanced by anthropogenic management action, hampers prediction of the surface–groundwater system response to flooding events. This study analyses these interactions and provides empirical evidence to define a conceptual model of flooding-infiltration-groundwater dynamics through the application of a few simple analysis tools to basic hydrological data. Relevant surface water–groundwater interactions are mainly localized in the left (west) margin of TDNP, as confirmed by the fast responses to flooding observed in the hydrochemic, hydrodynamic and isotopic data. During drying periods, small artificial and/or low-flow natural floods are followed by infiltration of evaporated poor-quality ponding water into saline low-permeability layers. The results allow an improved understanding of the hydrological behaviour essential to support efficient management practices. The relative simplicity of the methodology allows for its application in other similar complex groundwater-linked wetlands where detailed knowledge of local geology is still absent. 相似文献