National Ground Water Association (NGWA)

Modeling and fieldwork relationship shared in May-June issue of Groundwater

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If you are a member of the NGWA Scientists and Engineers membership section, you just received, or will soon receive, the May-June 2017 issue of Groundwater®. Below I offer a brief overview of the issue.

In his Guest Editorial, 'The Ying and Yang of Groundwater,' new Technology Editor David Lipson, Ph.D., offers his personal perspective of how theory and practice (modeling and fieldwork) in groundwater hydrology go hand in hand; one cannot do one without the other. 

Lipson, who became technology editor in January 2017, also announces an exciting new opportunity for groundwater consultants who may have completed a project of potential interest to the readers of Groundwater but lack the time to convert that into a peer-reviewed journal article. If they completed a publicly available technical report, Groundwater may accept an executive summary to be included in its Technology Spotlight section. 

In our Letter to the Editor column, managed by Stephen Kraemer, Ph.D., Mike Müller-Petke et al. comment on the 2016 paper by Bin Chen et al. on 'Complex Inversion of MRT Signals Under Different Loop Configurations for Groundwater Exploration.' The comment is followed by a reply from the authors.

In their Issue Paper, 'A Global Synthesis of Managing Groundwater Dependent Ecosystems Under Sustainable Groundwater Policy,' Melissa M. Rohde et al. offer a global synthesis of opportunities and challenges for managing groundwater-dependent ecosystems under sustainable water management policies.

This issue features 10 Research Papers on various topics: 

  • Pradeep Mugunthan et al. offer a new modeling tool for an enhanced representation of groundwater/surface water transition zone processes in contaminant fate and transport. 
  • Abdullah H.A. Dehwah et al. show that aquifer treatment can provide a high degree of pretreatment to remove natural organic matter from seawater. 
  • Hossein Rajabpour and Abdorreza Vaezihir introduce a new hydrogeological method to determine the trend of concealed faults and apply this method to the North Tabriz Fault in northwest Iran.
  • H.A. Loaéiciga evaluates methods for safe yield estimation under climatic variability with implications for groundwater management. 
  • Thomas B. Atherholt et al. demonstrate that the usefulness of coliform bacteria as indicators of fecal pollution of groundwater may be weakened by a seasonal difference in detection rates. 
  • Ilaria Butera and Claudia Soffia show how trajectory data from an unknown source can be usefully inserted into a cokriging system for solute path and transmissivity estimation. 
  • S.D. Mei et al. discuss how the airflow induced by rainfall enhances the phreatic level rise before actual recharge and that this drives the occurrence of the Lisse effect. 
  • P.G. Cook et al. present simple analytical solutions to provide preliminary estimates of water resource impacts of unconventional gas development. 
  • Hubert J. Morel-Seytoux et al. provide a physical meaning to the widely used empirical leakance factor (e.g., in MODFLOW) through an equivalence relation with the analytical SAFE conductance.
  • Yohann Cousquer et al. present an efficient tool to estimate the river conductance from prior information on physical parameters. 

This issue also features a Methods Note and Case Study Paper. Tariq Laattoe et al. present in the Method Note a method to implement a spatially periodic solute boundary in MT3DMS and PHT3D for use when simulating repeating structures. 

In their Case Study Paper, Ziv Moreno and Amir Paster studied the transport of a tracer in a heterogeneous (layered) aquifer during remediation by a partially penetrating pumping well. 

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