Graduate Student-Department of Biological Systems Engineering University of Nebraska-Lincoln
Disclosure: Disclosure information not submitted.
Although erosion and sediment deposition are naturally occurring processes, the rate of these processes has increased due to human influences. When erosion occurs near human development or infrastructure it can cause extensive and costly damage. Monitoring the erosion in at-risk areas could help managers mitigate the erosion problem before damage occurs. Currently, there are limitations to erosion monitoring techniques. Current methods are either invasive to the area, record low frequency measurements, or have a narrow range of measurement. In order to address the limitations of current erosion monitoring techniques, an affordable erosion monitoring system was created to be non-invasive to the area of interest, conduct high frequency measurements, and monitor an area of approximately 2800 square centimeters, all at a cost of approximately $350. The monitoring system uses an ultrasonic sensor that measures the time of reflectance of sound waves to calculate the distance to the area-of-interest. During storm events, as erosion and deposition occur, the changes in distance can be determined in real time, allowing for erosion and deposition rates to be determined. The current system has been proven successful in measuring the erosion and deposition during storm events but does yield some error. Future work will focus on improving mechanisms that account for the environmental factors (temperature and relative humidity) to decrease the error. This monitoring system will be able to provide researchers and managers with real time erosion and deposition rates affordably and non-invasively.
Define the different erosion monitoring methods and their limitations.
Explain how the ultrasonic erosion monitoring system works.
Outline the successes and limitations of the ultrasonic erosion monitoring system.