Sr-Isotope record of Quaternary marine terraces on the California coast and off Hawaii
K.R. Ludwig, D.R. Muhs, K. R. Simmons, J.G. Moore
1992, Quaternary Research (37) 267-280
Strontium-isotopic ratios of dated corals have been obtained from submerged reefs formed during Quaternary glacial periods off the Hawaiian islands. These data, combined with data from deep-sea sediments, tightly constrain the secular variation of marine 87Sr 86Sr for the past 800,000 yr. Although long-term trends are apparent, no significant...
On the state of stress in the near-surface of the earth's crust
W. Z. Savage, H.S. Swolfs, B. Amadei
1992, Pure and Applied Geophysics PAGEOPH (138) 207-228
Five models for near-surface crustal stresses induced by gravity and horizontal deformation and the influence of rock property contrasts, rock strength, and stress relaxation on these stresses are presented. Three of the models-the lateral constraint model, the model for crustal stresses caused by horizontal deformation, and the model for the...
Comparison of the effects of filtration and preservation methods on analyses for strontium-90 in ground water
L.L. Knobel, L. DeWayne Cecil, S.J. Wegner, L.L. Moore
1992, Environmental Monitoring and Assessment (20) 67-80
From 1952 to 1988, about 140 curies of strontium-90 were discharged in liquid waste to disposal ponds and wells at the INEL (Idaho National Engineering Laboratory). Water from four wells was sampled as part of the U.S. Geological Survey's quality-assurance program to evaluate the effects of filtration and preservation methods...
Factors controlling the major ion chemistry of streams in the Blue Ridge and Valley and Ridge physiographic provinces of Virginia and Maryland
L.J. Puckett, O.P. Bricker
1992, Hydrological Processes (6) 79-98
The factors controlling the chemistry of 69 low-order streams in the Blue Ridge and Valley and Ridge physiographic provinces of Virginia and Maryland were studied over a 13-month period. Principal component analysis was used to examine regional patterns in stream chemistry and to examine...
The Mauna Loa environmental matrix: foliar and soil nutrients
P.M. Vitousek, G. Aplet, D. Turner, J.J. Lockwood
1992, Oecologia (89) 372-382
The accumulation of total carbon, nitrogen, and phosphorus in soils, available soil nutrients, and foliar nutrients in the native dominant Metrosideros polymorpha were determined across a wide elevational range on 9 lava flows on Mauna Loa, Hawai'i. The flows included a young (2800 y) a??a??...
Seasonal dynamics of groundwater-lake interactions at Doñana National Park, Spain
Laura A. Sacks, Janet S. Herman, Leonard F. Konikow, Antonio L. Vela
1992, Journal of Hydrology (136) 123-154
The hydrologic and solute budgets of a lake can be strongly influenced by transient groundwater flow. Several shallow interdunal lakes in southwest Spain are in close hydraulic connection with the shallow ground water. Two permanent lakes and one intermittent lake have chloride concentrations that differ by almost an order of...
Peat accumulation in coastal-plain mires: A model for coals of the Fruitland Formation (Upper Cretaceous) of southern Colorado, USA
Roberts L. N. Robinson, P.J. McCabe
1992, International Journal of Coal Geology (21) 115-138
In the northwestern part of the San Juan basin, Colorado, thick high-volatile B bituminous coal deposits in the Upper Cretaceous Fruitland Formation are associated with nearshore marine sandstones of the Pictured Cliffs Sandstone. Detailed work along the outcrop and examination of...
Power of sign surveys to monitor population trend
Katherine C. Kendall, Lee H. Metzgar, David A. Patterson, Brian M. Steele
1992, Ecological Applications (2) 422-430
The urgent need for an effective monitoring scheme for grizzly bear (Ursus arctos) populations led us to investigate the effort required to detect changes in populations of low—density dispersed animals, using sign (mainly scats and tracks) they leave on trails. We surveyed trails in Glacier National Park for bear tracks...
15N and13C NMR investigation of hydroxylamine-derivatized humic substances
K. A. Thorn, J.B. Arterburn, M.A. Mikita
1992, Environmental Science & Technology (26) 107-116
No abstract available....
ALVIN investigation of an active propagating rift system, Galapagos 95.5° W
R.N. Hey, J.M. Sinton, M.C. Kleinrock, R.N. Yonover, K.C. MacDonald, S.P. Miller, R. C. Searle, D.M. Christie, T.M. Atwater, Norman H. Sleep, H. Paul Johnson, C.A. Neal
1992, Marine Geophysical Research (14) 207-226
ALVIN investigations have defined the fine-scale structural and volcanic patterns produced by active rift and spreading center propagation and failure near 95.5° W on the Galapagos spreading center. Behind the initial lithospheric rifting, which is propagating nearly due west at about 50 km m.y.−1, a triangular block of preexisting...
Isolation of hydrophilic organic acids from water using nonionic macroporous resins
G. R. Aiken, Diane M. McKnight, K. A. Thorn, E.M. Thurman
1992, Organic Geochemistry (18) 567-573
A method has been developed for the isolation of hydrophilic organic acids from aquatic environments using Amberlite∗ XAD-4 resin. The method uses a two column array of XAD-8 and XAD-4 resins in series. The hydrophobic organic acids, composed primarily of...
Stop B-2, Contra Costa College and El Portal School
J. J. Lienkaemper
1992, Book chapter, Field trip guidebook
No abstract available ...
The roles of food quality and quantity for desert tortoises: Perspectives on growth of individuals and populations
C.R. Tracy, T. C. Esque, C. Peterson, L.A. DeFalco, L.C. Zimmerman
1992, American Zoologist (32) 97A-97A
No abstract available....
Leporacanthicus triactis, a new loricariid fish from upper Orinoco River tributaries in Venezuela and Colombia (Pisces, Siluriformes, Loricariidae)
I.J. Isbrucker, H. Nijssen, L.G. Nico
1992, Die Aquarien- und Terrarienzeitschrift (DATZ) (46) 30-34
Abstract not supplied at this time...
Fossil sea turtles from the early Pliocene Bone Valley Formation, central Florida
C.K. Dodd Jr., G.S. Morgan
1992, Journal of Herpetology (26) 1-8
No abstract available....
Growth models and food conversion of cultured juvenile red abalone (Haliotis rufescens)
J.L. Greenier, John Y. Takekawa
S.A. Shepherd, M. J. Tegner, S. A. Guzman del Proo, editor(s)
1992, Book chapter, Abalone of the world
No abstract available at this time...
Habitat use by a headwater stream fish community in North-central Pennsylvania
J. H. Johnson, D. S. Dropkin, P.G. Shaffer
1992, Rivers (3) 69-79
Reproductive ecology of Emperor Geese: Survival of adult females
Margaret R. Petersen
1992, The Condor (94) 398-406
Life history theory predicts a decrease in survival with increased reproductive effort of individuals. This relationship, however, is highly variable among and within species. I studied the nesting success and survival of adult female Emperor Geese during 1982-1986 and found no direct evidence that differential reproductive effort as measured by...
Density of loons in central Alaska
Richard B. Lanctot, Pham Xuan Quang
1992, The Condor (94) 282-286
Loons breed across North America from the high arctic south to about 43 north latitude. (AOU 1983). Populations, particularly of Common Loons (Gavia immer) have recently declined in the continental U.S. and southern Canada (Sutcliff 1979, Titus and VanDruff 1981, McIntyre 1988). As a result, state and private natural resource...
Time allocation by Greater White-fronted Geese: Influence of diet, energy reserves and predation
Craig R. Ely
1992, The Condor (94) 857-870
I determined the amount of time Greater White-fronted Geese (Anser albifrons frontalis) allocated to various activities from September to May, 1980-1982 at their primary wintering areas in the Pacific Flyway of North America. The length of time spent on roosts during the day was positively correlated to day length. Geese...
Molt frequency and size class distribution in the California spiny lobster (Panulirus interruptus), at San Nicolas Island, California
James L. Bodkin, L.B. Browne
1992, California Fish and Game (78) 136-144
The use of coverboards in estimating patterns of reptile and amphibian biodiversity
B.W. Grant, A.D. Tucker, J.E. Lovich, A.M. Mills, P.M. Dixon, J.W. Gibbons
D.L. McCullough, R.H. Barrett, editor(s)
1992, Book chapter, Wildlife 2001: Populations
No abstract available at this time...
The non-marine herpetofauna of Egmont Key, Hillsborough County, Florida
R. Franz, C.K. Dodd Jr., A.M. Bard
1992, Florida Scientist (55) 179-183
Abstract not supplied at this time...
U.S. Geological Survey Library classification system
R. Scott Sasscer
1992, Bulletin 2010_1992
The U.S. Geological Survey library classification system has been designed for an earth science library. It is a tool for assigning classification numbers to earth science and allied pure science library materials in order to collect these materials into related subject groups on the library shelves and arrange them alphabetically...
A new device for collection of interstitial water from wetland sediments
Ned H. Euliss Jr., Ronald K. Barnes
1992, Wetlands Ecology and Management (1) 233-237
A sampler for collection of interstitial water from wetland sediments is described. It differs from other sampling devices because it does not have to be filled with solution to facilitate diffusion, it does not have to be removed from the wetland to collect samples, and it can be used to...
