USGS/Cascades Volcano Observatory, Vancouver, Washington
REPORT:
Methods Used to Monitor Deformation of the Crater Floor and Lava Dome at Mount
St. Helens, Washington
-- Eugene Y. Iwatsubo and Donald A. Swanson,
Methods Used to Monitor Deformation
of the Crater Floor and Lava Dome at Mount St. Helens, Washington,
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.53-68.
Table of Contents
-
Abstract
- Introduction
- History
- Monitoring Methods
- Crack and Thrust Fault Stations
- Leveling, Trilateration, and Triangulation
- EDM Networks
- Instrument and target stations
- EDM and Theodolite
- Tripods and Setups
- Tribrachs and standard tripods
- Centering-rod tripod
- Equipment Maintenance and Calibration
- Target and Reflector Problems
- Coordinates
- Software and Notes
- Discussion and Summary
- 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/Chapter6/table_contents.html>
If you have questions or comments please contact:
<GS-CVO-WEB@usgs.gov>
03/02/07, Lyn Topinka