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U.S. Geological Survey National Center for Earthquake Research Crustal Studies Technical Letters

This is a series of reports that was started in 1967. Many of the papers were published elsewhere later, either in one of the USGS Series publications or outside professional journals.

Contents

Eaton, J.P., 1967, The Parkfield-Cholame, California, earthquakes of June–August, 1966; instrumental seismic studies: U.S. Geological Survey Crustal Studies Technical Letter Number 1, 26 p. (Available at https://pubs.usgs.gov/misc/tl/0001/.)

Ryall, A., and Birtill, J., 1962, Digital processing of array seismic recordings: U.S. Geological Survey Crustal Studies Technical Letter Number 2, 20 p. (Available at https://pubs.usgs.gov/misc/tl/0002/.)

Roller, J.C., 1962, Times and locations of explosions; U.S. Geological Survey 1962 field season: U.S. Geological Survey Crustal Studies Technical Letter Number 3, 10 p. (Available at https://pubs.usgs.gov/misc/tl/0003/.)

Pakiser, L.C., and Hill, D.P., 1962, Crustal structure in Nevada and southern Idaho from nuclear explosions: U.S. Geological Survey Crustal Studies Technical Letter Number 4, 26 p. (Available at https://pubs.usgs.gov/misc/tl/0004/.)

Healy, J.H., 1962, Crustal structure along the coast of California from seismic-refraction measurements: U.S. Geological Survey Crustal Studies Technical Letter Number 5, 30 p. (Available at https://pubs.usgs.gov/misc/tl/0005/.)

Stuart, D.J., 1962, Fish kill from underwater explosions: U.S. Geological Survey Crustal Studies Technical Letter Number 6, 8 p. (Available at https://pubs.usgs.gov/misc/tl/0006/.)

Roller, J.C., and Healy, J.H., 1963, Seismic-refraction measurements of crustal structure between Santa Monica Bay and Lake Mead: U.S. Geological Survey Crustal Studies Technical Letter Number 7, 37 p. (Available at https://pubs.usgs.gov/misc/tl/0007/.)

Pakiser, L.C., 1963, Structure of the crust and upper mantle in the Western United States: U.S. Geological Survey Crustal Studies Technical Letter Number 8, 33 p. (Available at https://pubs.usgs.gov/misc/tl/0008/.)

Roller, J.C., Jackson, W.H., Cooper, J.F., and Martina, B.A., 1963, Crustal structure in the western United States; study of seismic propagation paths and regional traveltimes in the California-Nevada region: U.S. Geological Survey Crustal Studies Technical Letter Number 9, 57 p. (Available at https://pubs.usgs.gov/misc/tl/0009/.)

Ryall, A., and Stuart, D.J., 1963, Traveltimes and amplitudes from nuclear explosions; Nevada Test Site to Ordway, Colorado: U.S. Geological Survey Crustal Studies Technical Letter Number 10, 41 p. (Available at https://pubs.usgs.gov/misc/tl/0010/.)

Eaton, J.P., 1963, Crustal Structure from San Francisco, California, to Eureka, Nevada, from Seismic-Refraction Measurements: U.S. Geological Survey Crustal Studies Technical Letter Number 11, 55 p. (Available at https://pubs.usgs.gov/misc/tl/0011/.)

Roller, J.C., 1963, Crustal structure in the vicinity of Las Vegas, Nevada, from seismic and gravity observations: U.S. Geological Survey Crustal Studies Technical Letter Number 12, 10 p. (Available at https://pubs.usgs.gov/misc/tl/0012/.)

Healy J.H., and Mangan, G.B., 1963, Preliminary study of first motion from nuclear explosions recorded on seismograms in the first zone: U.S. Geological Survey Crustal Studies Technical Letter Number 13, 19 p. (Available at https://pubs.usgs.gov/misc/tl/0013/.)

Roller, J.C., Strozier, O.P., Jackson, W.H., and Healy, J.H., 1963, Preliminary report on seismic-reflection studies of crustal structure in the western, central, and southern United States: U.S. Geological Survey Crustal Studies Technical Letter Number 14, 55 p. (Available at https://pubs.usgs.gov/misc/tl/0014/.)

Healy, J.H., and Mangan, G.B., 1963, A progress report on seismic model studies: U.S. Geological Survey Crustal Studies Technical Letter Number 15, 8 p. (Available at https://pubs.usgs.gov/misc/tl/0015/.)

Healy, J.H., 1964, Variations in regional traveltimes: U.S. Geological Survey Crustal Studies Technical Letter Number 16, 21 p. (Available at https://pubs.usgs.gov/misc/tl/0016/.)

Jackson W.H., and Healy, J.H., 1964, Preliminary report on some factors affecting shotpoint efficiency: U.S. Geological Survey Crustal Studies Technical Letter Number 17, 23 p. (Available at https://pubs.usgs.gov/misc/tl/0017/.)

Rodriguez, R., Durbin, W.P., Jr., Healy, J.H., and Warren, D.H., 1964, Compilation of seismic-refraction crustal data in the Soviet Union: U.S. Geological Survey Crustal Studies Technical Letter Number 18, 9 p., 4 sheets, scale 1:5,000,000. (Available at https://pubs.usgs.gov/misc/tl/0018/.)

Roller, J.C., 1964, Crustal structure in the eastern Colorado Plateaus Provence from seismic-refraction measurements: U.S. Geological Survey Crustal Studies Technical Letter Number 19, 28 p. (Available at https://pubs.usgs.gov/misc/tl/0019/.)

Pakiser, L.C., 1964, Continental crust: U.S. Geological Survey Crustal Studies Technical Letter Number 20, 24 p. (Available at https://pubs.usgs.gov/misc/tl/0020/.)

Willden, R., 1964, Seismic-refraction measurements of crustal structure between American Falls Reservoir, Idaho, and Flaming Gorge Reservoir, Utah: U.S. Geological Survey Crustal Studies Technical Letter Number 21, 37 p. (Available at https://pubs.usgs.gov/misc/tl/0021/.)

Johnson, L.R., 1964, Crustal structure between Lake Mead, Nevada, and Mono Lake, California: U.S. Geological Survey Crustal Studies Technical Letter Number 22, 21 p. (Available at https://pubs.usgs.gov/misc/tl/0022/.)

Roller, J.C., Jackson, W.H., Warren, D.H., and Healy, J.H., 1964, A Preliminary Summary of a Seismic-Refraction Survey in the Vicinity of the Tonto Forest Observatory, Arizona: U.S. Geological Survey Crustal Studies Technical Letter Number 23, 57 p. (Available at https://pubs.usgs.gov/misc/tl/0023/.)

(Technical Letter Number 24 is missing)

(Technical Letter Number 25 is missing)

Gibbs, J.F., and Roller, J.C., 1964, Seismic-Refraction Measurements of Crustal Structure Between Nevada Test Site and Ludlow, California: U.S. Geological Survey Crustal Studies Technical Letter Number 26, 30 p. (Available at https://pubs.usgs.gov/misc/tl/0026/.)

(Technical Letter Number 27 is missing)

(Technical Letter Number 28 is missing)

(Technical Letter Number 29 is missing)

Rodriquez, R.G., 1965, Calculations of upper-mantle velocity from published Soviet earthquake data: U.S. Geological Survey Crustal Studies Technical Letter Number 30, 30 p. (Available at https://pubs.usgs.gov/misc/tl/0030/.)

(Technical Letter Number 31 is missing)

Pritchard, J.I., 1965, A final report on computed magneto-telluric curves for hypothetical models of crustal structure: U.S. Geological Survey Crustal Studies Technical Letter Number 32, 15 p. (Available at https://pubs.usgs.gov/misc/tl/0032/.)

(Technical Letter Number 33 is missing)

(Technical Letter Number 34 is missing)

• These reports are available only on the Web.

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