[My Photo]

Daniel J. Johnson

CURRENT WORK: GPS data analyst at Central Washington University

EXPERIENCE: Geodetic, gravimetric, and geophysical techniques applied to active volcanoes. Plate tectonic monitoring utilizing GPS observations. At-sea acquisition and processing of sidescan sonar data. Computer programming.

EDUCATION: 

	1989 PhD in Geology and Geophysics from University of Hawaii
	1981 BS in Geology from University of Puget Sound, Tacoma, WA
	1977 Graduated from Lakes High School, Tacoma, WA

POSITIONS:

University of Hawaii, Honolulu, HI Oct 1987-Oct 1991 (part time) and Oct 1991 to Sept 1994 (full time)

· At-sea sidescan sonar data collection and computer processing. Produced maps showing seafloor bathymetry and backscatter. Second-pass processing at HIG to improve product. Software testing, report preparation, and data analysis.

· Member of science staff of research vessels. Investigated sea-floor geology in a variety of tectonic settings. Cumulative 1.5 years time at-sea in 18 expeditions.

University of Colorado, UNAVCO, Boulder, CO 1988-90 (volunteer status)

· Participated in five GPS field campaigns, collecting GPS observations for plate-motion studies

U.S. Geological Survey, Hawaii Volcano Observatory, HI 1987 Physical Science Tech

· Provided technical assistance in the development of a permanent microgravity monitoring program at HVO.

U.S. Geological Survey, Cascades Volcano Observatory, Vancouver, WA 1981-86 Physical Science Tech

· Fieldwork: Installed and periodically occupied spirit-level tilt monitors at seven Cascade Range volcanoes. Assisted with three first-order level surveys at Yellowstone, WY. Assisted in a major trilateration survey of the Island of Hawaii in 1984. Surveyed vertical and horizontal control for detailed geophysical mapping around Mount St. Helens. Assisted with mapping of magnetic field, electrical self-potential, very-low-frequency magnetic inductance, and resistivity of the Mount St. Helens crater floor and dome. Monitored temporal variations of the magnetic field of the growing Mount St. Helens lava dome.

· Data Analysis: Responsible for computer processing of data collected by geophysics section of observatory. Wrote computer programs, entered data, and prepared maps and graphs for reports and publication.

· Research: Established a precision gravity network within the crater of Mount St. Helens to monitor shallow magma intrusion and groundwater movement. Created a microgravity monitoring network on Kilauea and Mauna Loa volcanoes in 1984 and managed the gravity program through 1986.

· Other: Instructed Colombian personnel in volcanic monitoring techniques and helped in the interpretation of seismic and geologic observations at Nevado del Ruiz volcano, Colombia.

University of Puget Sound, Tacoma, WA 1979-80 Surveyor/Field Assistant

· Rodman on 1st-order leveling team, two summer field seasons at Pacaya Volcano, Guatemala.

· Assisted with volcanological studies at Mount St. Helens, March-May 1980.



Back to home page

Last Modified: November 4, 1995