Conference Papers
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Modeling of rock friction 1. Experimental results and constitutive equations
Direct shear experiments on ground surfaces of a granodiorite from Raymond, California, at normal stresses of ??6 MPa demonstrate that competing time, displacement, and velocity effects control rock friction. It is proposed that the strength of the population of points of contacts between sliding surfaces determines frictional strength and that the population of contacts changes continuously with
Authors
J.H. Dieterich
Modeling of rock friction 2. Simulation of preseismic slip
The constitutive relations developed in the companion paper are used to model detailed observations of preseismic slip and the onset of unstable slip in biaxial laboratory experiments. The simulations employ a deterministic plane strain finite element model to represent the interactions both within the sliding blocks and between the blocks and the loading apparatus. Both experiments and simulation
Authors
J.H. Dieterich
Multiple-factor influences upon feeding flight rates at wading bird colonies (Alias: Are flight-line counts useful?)
The temporal patterns of feeding, resting, and reproductive behavior in colonial wading birds have been studied by a number of investigators (Recher and Recher 1972, King 1974, Capen 1978, Custer and Osborn 1978, Kushlan 1978) both on a short-term (daily) and long-term (annual) basis. In coastal marine environments, activities at colonies are influenced by tides (Recher and Recher 1972, Krebs 197
Authors
R. Michael Erwin, John C. Ogden
Plasma corticosteroid concentrations and secretion rates in channel catfish (Ictalurus punctatus): effect of temperature, time of day and fish density
No abstract available at this time
Authors
K. B. Davis, N. C. Parker, M. A. Suttle
Recovery of breeding success in a population of brown pelicans
Breeding populations of the brown pelican (Pelecanus occidentalis) declined during the 1960's on both east and west coasts of the United States. In 1969, colonies in South Carolina fledged an average of 0.78 young per nest (Blus et al. 1974b), and those in California only 0.004 (Anderson et al. 1975). The minimum production for population stability has been estimated to be 1.0 to 1.2 fledglings p
Authors
Vivian M. Mendenhall, Richard M. Prouty
Uranium, thorium, and mercury distribution through the evolution of the McDermitt caldera complex
No abstract available.
Authors
J. J. Rytuba, R.K. Glanzman, W.K. Conrad
Evaluation of methodology used in ecological characterization of the Chenier Plain
No abstract available.
Authors
R. H. Chabreck, J. B. Johnston, James B. Kirkwood
Progress on ground motion predictions for the San Francisco Bay region, California
No abstract available.
Authors
Roger D. Borcherdt, J. F. Gibbs, T. E. Fumal
Progress on seismic zonation in the San Francisco Bay region: Introduction and summary
No abstract available.
Authors
Earl E. Brabb, Roger D. Borcherdt
Use of Landsat imagery for estimating food available to refuging lesser snow geese
No abstract available.
Authors
Erwin E. Klaas, William H. Anderson, Robert B. Frederick