High Accuracy Vertical Slope Measurements in Caves Using Micro-barometers
I have been using micro-barometers / altimeters to make vertical slope measurements in Fort Stanton Cave. The slope of the 10 mile long Snowy River is approximately 0.2% and could not be accurately measured by conventional cave survey techniques. By using 4 micro-barometers I was able to determine the passage slope to an accuracy of plus or minus 2 feet. As a bonus the elevations were confirmed with a radio location.
Presented at the Communications and Electronics Section meeting at the 2016 NSS Convention in Ely, NV, by Bob Buecher. b...@comcast.net