Mapping Stream Subsurface Heterogeneity using Ground Penetrating Radar and Hydrogeological Tests

Advisor: Chris Lowry, Department of Geology, cslowry@buffalo.edu
Other mentors: Jonathan Malzone (Ph.D. student)

Primary activities: Field work and data analysis

Project Summary:The interface between surface water and groundwater is a complex zone within riparian environments. This interface supports important geochemical reactions that fosters habitat for benthic invertebrates.  The ecological function and services provided at this interface is a direct result of mixing between surface water and groundwater.  The glacial history and reworking of sediments in these riparian environments in addition to the regional hydrology of the system are primary drivers in the development of these mixing zones.  As part of the REU project we will investigate the controls on groundwater discharge to streams as a result of subsurface heterogeneity.  By assessing the controls and distribution of groundwater discharge we can then develop a more complete conceptual model of these mixing zones, which impact ecological diversity in streams.  Using ground penetrating radar, hydrogeological tests, and field geologic surveys we will map lithological changes in the subsurface that either promote or prohibit the mixing of surface water and groundwater.  Based on these result we will create a three dimensional map of subsurface heterogeneity in order to predict flow paths and mixing zones, which in turn affect surface ecologic expression.

Skills/Courses Recommended: Basic knowledge of hydrology and fluvial geomorphology
Anticipated Conference Presentation(s):Northeast Geological Society of America