Benjamin Green, University of Iowa

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Class Year:

2012

Mentor:

Cindy Palinkas, Ph.D.

Project Title:

Sedimentation Trends and Their Effect on Nitrogen Burial in the Lower Potomac River

Abstract:

Nitrogen burial through sediment accumulation is a major sink within the proposed nitrogen cycle for the Potomac River. This study explored the relationship between nitrogen concentration and deposition patterns. 210Pb geochronology was used to calculate sedimentation rates for sediment cores collected in the Potomac River. There were examples of both steady-state accumulation and event-layer deposition at different points along the river. Upon further analysis, it was found that sediment deposition patterns have a direct relationship to the rates of nitrogen burial. It is postulated that either channel location or river position affects dominant deposition patterns, with differences also noted in profiles of median grain size profiles and nitrogen concentration profiles.

Presentations:

Green, B.*, and C. Palinkas. 2013. Sedimentation in the lower Potomac River and its influence on nitrogen burial . ASLO Aquatic Sciences Meeting, New Orleans, Louisiana .

The REU students are indicated with an asterisk (*).

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