Simplified user's guide to time-domain-reflectometry monitoring of slope stability

Original publisher: [San Dimas, Calif.] : U.S. Dept. of Agriculture, Forest Service, National Technology & Development Program, [2009] OCLC Number: (OCoLC)731953822 Subject: Time-domain reflectometry -- United States. Excerpt: ... Analysis Process The test dates are added to each column of data, and the data are plotted. Figure 8 shows a sample chart from one region 6 testsite. The vertical scale is a coefficient related to impedance. The horizontal scale represents the number of scan events created by the cable tester during a single reading. For the cable tester used to collect the data shown in figure 8, 1,200 incremental measurements of the vertical-scale parameter were made at 10-picosecond intervals for each day's data plot. T3S 4000 3500 3000 2500 2000 1500 2 / 7 / 03 3 / 4 / 03 1000 4 / 8 / 03 6 / 2 / 03 9 / 30 / 03 500 11 / 4 / 03 0 0 200 400 600 800 1000 1200 1400 Figure 8 - Sample chart from region 6 testsite. Vertical: Coefficient related to impedance ( provided by cable tester ). Horizontal: Number of scan events. 9