 
   
 
  
  
 
  Laramie Range Field Site
 
  
  
 
  © Maneh Kotikian 
  Last updated: November 2015
 
 
  
 
  
Installing the electrodes
  Photo Credit: Andy Parsekian
 
 
  
Installing soil moisture sensors
 
 
  
Austin Carey running rainfall 
  simulation tests at the Laramie 
  Range Site
 
  
  
  
 
  
Research
  Water in the west is primarily sourced from snowmelt in mountains that occurs throughout the year providing freshwater for rivers and recharge for 
  groundwater aquifers. The processes that water undergoes from the snowpack into a first order stream are crucial to investigate further because of the 
  importance of this resource for society and ecosystems downstream. At my study site in the Laramie Range, located in southeast Wyoming, subsurface water 
  flow often moves through the soil and fractured rock although its storage, residence time, and partitioning have not been well documented at the hillslope 
  scale. Hydrogeophysics enables non-invasive measurements of water storage, residence time, and water partitioning in the unsaturated zone between the top 
  soil and fractured bedrock and will provide a fresh perspective on hillslope hydrology and the movement of water through the subsurface. Time-lapse electric 
  resistivity tomography (TL-ERT) provides the means necessary measure the electrical properties of the subsurface as they vary with moisture content on 
  seasonal and annual time-scales. Water is the only material to change over the duration of the measurement, resulting in decreased resistivity. 
 
  
 
  Maneh Kotikian