Research Reports on Hydrologic Engineering from Duke University Provide New Insights

摘要

2011 MAY 25 - (VerticalNews.com) -- "This paper presents the development of arnnovel acoustic sensor that enhances Doppler approaches to monitor groundwater vector flow.rnThe technique is based on a high-resolution acoustic phase measurement: flowing waterrnintroduces a shift in the acoustic velocity component between the transmitter and receiver,"rnscientists in Durham, United States report.