USGS/Cascades Volcano Observatory, Vancouver, Washington
REPORT:
Using First-Order Class II Geodetic Leveling Procedures to Monitor Vertical
Displacement
-- Kenneth M. Yamashita and William P. Kaiser,
Using First-Order Class II Geodetic Leveling Procedures to Monitor Vertical
Displacement,
IN: Ewert and Swanson, (eds.), 1992, Monitoring
Volcanoes: Techniques and Strategies Used by the Staff of the
Cascades Volcano Observatory, 1980-1990: USGS Bulletin 1966,
p.135-141.
Table of Contents
-
Abstract
- Background
- Federal Guidelines for Geodetic Leveling
- First-Order Class II Levels
- Equipment
- Level Instrument
- CVO Instrumentation
- Level Rods
- Temperature Probes
- Bench-mark Spacing and Installation
- Procedures to Follow During Data Collection
- Adjustment of Level Instrument
- Parallax Adjustment
- Peg Test
- Adjustment of Level Vials
- Field Procedures
- Sources of Error
- Data Reduction
- Computation of Collimation Error
- Refraction Correction
- Orthometric Correction
- Rod Temperature Correction
- Level Collimation Correction
- Equation to Calculate Standard Error for Double-Run
Segments
- Equation to Calculate Closure Error
- Magnetic Error
- Acknowledgments
- References Cited
URL for CVO HomePage is:
<http://vulcan.wr.usgs.gov/home.html>
URL for this page is:
<http://vulcan.wr.usgs.gov/Monitoring/Bulletin1966/Chapter13/table_contents.html>
If you have questions or comments please contact:
<GS-CVO-WEB@usgs.gov>
02/19/98, Lyn Topinka