Variations in regional traveltimes
J. H. Healy
1964, Crustal Studies Technical Letter 16
Precise epicentral location of a seismic event is made difficult by variations in regional traveltimes. A discussion is presented on delays to be expected in the various segments of a generalized travel path of seismic waves. Traveltime variations caused by changes in crustal structure and velocity introduce a major part...
Crustal structure in the eastern Colorado Plateaus Provence from seismic-refraction measurements
John C. Roller
1964, Crustal Studies Technical Letter 19
A reversed seismic-refraction profile was recorded in the Colorado Plateaus Province from Hanksville, Utah, to Chinle, Arizona, The velocity of Pg is 6.2 km/sec, and the true velocity of Pn is 7.8 km/sec, Waves identified as reflections indicate that an intermediate layer in the crust has a velocity of approximately...
Preliminary report on some factors affecting shotpoint efficiency
W. H. Jackson, J. H. Healy
1964, Crustal Studies Technical Letter 17
A study of first-arrival amplitudes from 6 water shotpoints and 7 drill-hole shotpoints in parts of central and western United States indicate a variation of over 100 to 1 between the best and poorest shotpoints. Water shotpoints are, in general, superior to drill-hole shotpoints; however, one drill-hole shotpoint produced higher...
Continental crust
L. C. Pakiser
1964, Crustal Studies Technical Letter 20
The structure of the Earth’s crust (the outer shell of the earth above the M-discontinuity) has been intensively studied in many places by use of geophysical methods. The velocity of seismic compressional waves in the crust and in the upper mantle varies from place to place in the conterminous United...
Compilation of seismic-refraction crustal data in the Soviet Union
Robert Rodriguez, William P. Durbin Jr., J. H. Healy, David H. Warren
1964, Crustal Studies Technical Letter 18
The U.S. Geological Survey is preparing a series of terrain atlases of the Sino-Soviet bloc of nations for use in a possible nuclear-test detection program. Part of this project is concerned with the compilation and evaluation of crustal-structure data. To date, a compilation has been made of data from Russian...
Primary publication in microprint
C. M. Herman, D.E. Davis
1964, BioScience (14) 27-30
This is a progress report on an experiment to demonstrate practicality of such publication. Based on a study conducted since 1959 through the publication of 'Wildlife Disease', the co-authors review the original aims, accomplishments, and future of primary publication in microprint. Space and cost savings, as well as author and...
Multiple parasitism in fledgling birds: Case reports
G. M. Clark, L. N. Locke
1964, Avian Diseases (8) 315-316
No abstract available....
[Book review] Ulendo: Travels of a Naturalist in and out of Africa, by A. Carr
F. C. Schmid
1964, Baltimore Sun
A merganser die-off associated with larval eustrongylides
L. N. Locke, J.B. DeWitt, C. M. Menzie, J.A. Kerwin
1964, Avian Diseases (8) 420-427
A die-off of red-breasted mergansers on Lake Holly, Virginia Beach, Virginia, was found to be due to a larval Eustrongylides. Massive tissue destruction and hemorrhage was produced by the migration of the larval Eustrongylides. Earlier stages of the same Eustrongylides were found in eastern mosquitofish and silversides upon which the...
Biases in mail questionnaires of upland game hunters
R. K. Martinson, D.E. Whitesell
1964, Transactions of the North American Wildlife and Natural Resources Conference (29) 287-294
Changes in land use and breeding red-winged blackbird populations at Patuxent Wildlife Research Center
Don P. Fankhauser, R.T. Mitchell
1964, Atlantic Naturalist (19) 99-100
Habitat use at night by wintering American woodcock in coastal Georgia and Virginia
C.S. Robbins
1964, Audubon Field Notes (18) 151-152
Nocturnal habitats used by American woodcock (Scolopux minor) were studied using radio telemetry at two coastal wintering sites in Georgia (1982-84) and Virginia (1991-92). In Georgia, use of forested habitats at night was extensive while use of fields at night varied between years but generally was low. We found no...
Improved nest structures for wood ducks
Clark G. Webster, F.M. Uhler
1964, Wildlife Leaflet 458
Behavior and survival of Canada geese in Utah
F.W. Martin
1964, Utah State Department of Fish and Game, Departmental Information Bulletin 64.7
Significance of bird losses on Lake Michigan during November and December 1963
C. M. Herman
1964, Book chapter, Proceedings, seventh conference on Great Lakes research : Toronto, Canada, April 6-7, 1964.
No abstract available....
DDT in loons
L. N. Locke, George E. Bagley
1964, Book chapter, Effects of Pesticides on Fish and Wildlife
No abstract available....
Water off and on
W.E. Green, L.G. MacNamara, F.M. Uhler
J.P. Linduska, editor(s)
1964, Book chapter, Waterfowl Tomorrow
Bonus from waste places
F.M. Uhler
J.P. Linduska, editor(s)
1964, Book chapter, Waterfowl Tomorrow
Geographic centers of the United States
Water Resources Division, U.S. Geological Survey
1964, Report
There is no generally accepted definition of geographic center, and no completely satisfactory method for determining it. Because of this, there may be as many geographic centers of a State or country as there are definitions of the term. The geographic center of an area may be defined as the...
Surface water records of Colorado, water year 1964
U.S. Geological Survey
1964, Water Data Report CO-64-2
Water quality records in Colorado, water year 1964
U.S. Geological Survey
1964, Water Data Report CO-64-1
Specific yield - laboratory experiments showing the effect of time on column drainage
R.C. Prill, A.I. Johnson, D. A. Morris
1964, Report
The increasing use of ground water from many major aquifers in the United States has required a more thorough understanding of gravity drainage, or specific yield. This report describes one phase of specific yield research by the U.S. Geological Survey's Hydrologic Laboratory in cooperation with the California Department of Water...
Water quality of the Swatara Creek Basin, PA
Edward F. McCarren, J.W. Wark, J.R. George
1964, Report
The Swatara Creek of the Susquehanna River Basin is the farthest downstream sub-basin that drains acid water (pH of 4.5 or less) from anthracite coal mines. The Swatara Creek drainage area includes 567 square miles of parts of Schuylkill, Berks, Lebanon, and Dauphin Counties in Pennsylvania.To learn what environmental factors...
Geology of the Mammoth Cave quadrangle, Kentucky
Donald D. Haynes
1964, Geologic Quadrangle 351
Measurement of the remanent magnetization of igneous rocks
Richard Rayman Doell, Allan Cox
1964, Open-File Report 708
