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Page 6333, results 158301 - 158325

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Publication Extents

Not all publications have extents, not all extents are completely accurate
Some rates of geomorphological processes
Luna Bergere Leopold, William W. Emmett
1972, Geographia Polonica (23) 27-36
This brief report summarizes three sets of measurement data on certain processes.The first concerns the rate of movement of soil on hillslopes, especially by mass movement or slow gravitational creep. The results are abstracted from an unpublished manuscript by the junior author who reports on the measurements which Leopold began...
Destruction of the ecosystem in the Great Lakes and possibilities for its reconstruction
Stanford H. Smith
Remedios W. Moore, editor(s)
1972, Book chapter, Progress in fishery and food science
This paper is a review of the sequence of events within the Great Lakes and their drainage to provide a basis for interpreting probable cause-and-effect relations between events of settlement and changes in the ecosystem of the Great Lakes. Possibilities of restoration of the lakes are discussed. A plan to...
A summary of peak stages and discharges in New York for the flood of June 1972
Kenneth I. Darmer
1972, Report
Intense rainfall associated with Tropical Storm Agnes in late June 1972 resulted in the greatest flood disaster in the history of New York State. Flooding began in Westchester County on June 19 and was followed by widespread flooding in the Southern Tier and the Fingers Lakes region on June 23....
The future of salmonid communities in the Laurentian Great Lakes
Stanford H. Smith
1972, Journal of the Fisheries Research Board of Canada (29) 951-957
The effects of human population growth, industrialization, and the introduction of marine fishes have reduced the suitability of each of the Great Lakes for oligotrophic fish communities. The ultimate consequence has been a reduction of fishery productivity that has ranged from extreme in Lake Ontario to moderate in Lake Superior....
Population biology of alewives, Alosa pseudoharengus, in Lake Michigan, 1949-70
Edward H. Brown Jr.
1972, Journal of the Fisheries Research Board of Canada (29) 477-500
Alewives were unknown in Lake Michigan before 1949, but became extremely abundant in the 1960s and soon exceeded the carrying capacity of the lake. In 1967 they were decimated by a lakewide mass mortality, and have since been less abundant as "adults" (≥120 mm long), although numerous young were produced in...
Radiative-neutron-capture gamma-ray analysis by a linear combination technique
A.B. Tanner, R.C. Bhargava, F. E. Senftle, J.M. Brinkerhoff
1972, Nuclear Instruments and Methods (102) 61-72
The linear combination technique, when applied to a gamma-ray spectrum, gives a single number indicative of the extent to which the spectral lines of a sought element are present in a complex spectrum. Spectra are taken of the sought element and of various...
Imaging experiment: The Viking Mars orbiter
M. H. Carr, W.A. Baum, G.A. Briggs, H. Masursky, D.W. Wise, D. R. Montgomery
1972, Icarus (16) 17-33
The general objectives of the Imaging Experiment on the Viking Orbiter are to aid the selection of Viking Lander sites, to map and monitor the chosen sites during lander operations, to aid in the selection of future landing sites, and to extend our...
Graphical methods for representing form and stability of aqueous metal ions
J.D. Hem
1972, Chemical Geology (9) 119-132
The equilibrium distributions of solute species of aluminum at 25°C and one atmosphere pressure are shown graphically in systems containing fluoride, as functions of the total dissolved aluminum and fluoride. The predominant form of complex and degree of complexing are also shown...
The martian atmosphere: Mariner 9 television experiment progress report
C.B. Leovy, G.A. Briggs, A.T. Young, B.A. Smith, James B. Pollack, E.N. Shipley, R.L. Wildey
1972, Icarus (17) 373-393
Atmospheric phenomena appearing in the Mariner 9 television pictures are discussed in detail. The surface of the planet was heavily obscured by a global dust storm during the first month in orbit. Brightness data during this period can be fitted by a semi-infinite...
Geological framework of the south polar region of Mars
B. C. Murray, L.A. Soderblom, J.A. Cutts, R.P. Sharp, D.J. Milton, R.B. Leighton
1972, Icarus (17) 328-345
The first 4 months of Mariner 9 photography of the south polar region are discussed. Three major geological units have been recognized, separated by erosional unconformities. From oldest to youngest they are: cratered terrain, pitted plains, and laminated terrain. The latter unit is unique in occurrence to the polar region,...
The apollo 15 lunar samples: A preliminary description
P.W. Gast, W.C. Phinney, M.B. Duke, L. T. Silver, N.J. Hubbard, G.H. Heiken, P. Butler, D.S. McKay, J.L. Warner, D.A. Morrison, F. Horz, J. Head, G.E. Lofgren, W.I. Ridley, A.M. Reid, H. Wilshire, J.F. Lindsay, W.D. Carrier, P. Jakes, M.N. Bass, P.R. Brett, E.D. Jackson, J.M. Rhodes, B.M. Bansal, J.E. Wainwright, K.A. Parker, K.V. Rodgers, J.E. Keith, R.S. Clark, E. Schonfeld, L. Bennett, Martha M. Robbins, W. Portenier, D.D. Bogard, W.R. Hart, W.C. Hirsch, R.B. Wilkin, E.K. Gibson, C.B. Moore, C.F. Lewis
1972, Science (175) 363-375
Samples returned from the Apollo 15 site consist of mare basalts and breccias with a variety of premare igneous rocks. The mare basalts are from at least two different lava flows. The bulk chemical compositions and textures of these rocks confirm the previous conclusion that the lunar maria consist of...
Mass spectrometric analysis of organic compounds, water and volatile constituents in the atmosphere and surface of Mars: The Viking Mars Lander
Duwayne M. Anderson, K. Biemann, Leslie E. Orgel, John Oro, Tobias Owen, Garson P. Shulman, Priestley Toulmin III, H. C. Urey
1972, Icarus (16) 111-138
An experiment centering around a mass spectrometer is described, which is aimed at the identification of organic substances present in the top 10 cm of the surface of Mars and an analysis of the atmosphere for major and minor constituents as well as isotopic abundances. In addition, an indication of...
Fluorination of 1,2,3-, 1,2,4-, and 1,3,5-trihalobenzenes with potassium fluoride in dimethyl sulfone
R.H. Shiley, D. R. Dickerson, G. C. Finger
1972, Journal of Fluorine Chemistry (2) 19-26
Three trifluorobenzenes were prepared by reaction of the corresponding trichlorobenzenes with potassium fluoride or pottassium fluoride-cesium fluoride mixtures in dimethyl sulfone. Molar yields were 12.8% for 1,2,3-, 8.3% for 1,2,4-, and 56.2% for 1,3,5-. Improved yields of the 1,2,3- (23.9%) and the 1,2,4-...
Mariner 9 television observations of Phobos and Deimos
James B. Pollack, J. Veverka, M. Noland, C. Sagan, W.K. Hartmann, T. C. Duxbury, G.H. Born, D.J. Milton, B.A. Smith
1972, Icarus (17) 394-407
Mariner 9 photographs of Phobos and Deimos have yielded new information about the orbits, rotation periods, sizes, shapes, and surface characteristics of the satellites. Both satellites appear to be in synchronous rotation. They are irregular, heavily cratered bodies whose shapes appear to have been determined largely by impact fragmentation and...
Structural profile of the northwestern Caribbean
William P. Dillon, J. G. Vedder, R.J. Graf
1972, Earth and Planetary Science Letters (17) 175-180
A seismic reflection and gravity profile across the continental margin of the Yucatan Peninsula, Yucatan Basin, Cayman Ridge, and Cayman Trough suggests that sediments in the Yucatan Basin consist of a thick succession of beds dominated by turbidites that overlie a thick but irregular sequence of beds, probably dominated by...
Atomic displacements in ferroelectric trigonal and orthorhombic boracite structures
Eric Dowty, J. R. Clark
1972, Solid State Communications (10) 543-548
New crystal-structure refinements of Pca21 boracite, Mg3ClB7O13, and Rϵc ericaite, Fe2.4Mg0.6ClB7O13, show that some boron and oxygen atoms are involved in the ‘ferro’ transitions as well as the metal and halogen atoms. The atomic displacements associated with the polarity changes are as large as 0.6Å....