Coastal groundwater/surface-water interactions: a Great Lakes case study
Brian P. Neff, Sheridan K. Haack, Donald O. Rosenberry, Jacqueline F. Savino, Scott C. Lundstrom
2006, Book chapter, Coastal hydrology and processes
Key similarities exist between marine and Great Lakes coastal environments. Water and nutrient fluxes across lakebeds in the Great Lakes are influenced by seiche and wind set-up and set-down, analogous to tidal influence in marine settings. Groundwater/surface-water interactions also commonly involve a saline-fresh water interface, although in the Great-Lakes cases,...
The quest for the perfect gravity anomaly: Part 2 - Mass effects and anomaly inversion
Gordon R. Keller, T.G. Hildenbrand, W. J. Hinze, X. Li, D. Ravat, M. Webring
2006, SEG Technical Program Expanded Abstracts (25) 864-868
Gravity anomalies have become an important tool for geologic studies since the widespread use of high-precision gravimeters after the Second World War. More recently the development of instrumentation for airborne gravity observations, procedures for acquiring data from satellite platforms, the readily available Global Positioning System for precise vertical and horizontal...
Peak discharge of a Pleistocene lava-dam outburst flood in Grand Canyon, Arizona, USA
C.R. Fenton, R. H. Webb, T.E. Cerling
2006, Quaternary Research (65) 324-335
The failure of a lava dam 165,000 yr ago produced the largest known flood on the Colorado River in Grand Canyon. The Hyaloclastite Dam was up to 366 m high, and geochemical evidence linked this structure to outburst-flood deposits that occurred for 32 km downstream. Using the Hyaloclastite outburst-flood deposits...
Recent volcanic history of Irazu volcano, Costa Rica: alternation and mixing of two magma batches, and pervasive mixing
Guillermo E. Alvarado, Michael J. Carr, Brent D. Turrin, Carl C. Swisher III, Hans-Ulrich Schmincke, Kenneth W. Hudnut
2006, Special Paper of the Geological Society of America 259-276
40Ar/39Ar dates, field observations, and geochemical data are reported for Irazú volcano, Costa Rica. Volcanism dates back to at least 854 ka, but has been episodic with lava shield construction peaks at ca. 570 ka and 136–0 ka. The recent volcanic record on Irazú volcano comprises lava flows and a...
Trends of chlorinated organic contaminants in Great Lakes trout and walleye from 1970-1998
J.P. Hickey, S.A. Batterman, S.M. Chernyak
2006, Archives of Environmental Contamination and Toxicology (50) 97-110
Levels of chlorinated organic contaminants in predator fish have been monitored annually in each of the Great Lakes since the 1970s. This article updates earlier reports with data from 1991 to 1998 for lake trout (Salvelinus namaycush) and (Lake Erie only) walleye (Sander vitreus) to provide a record that now...
Groundwater-supported evapotranspiration within glaciated watersheds under conditions of climate change
D. Cohen, M. Person, R. Daannen, S. Locke, D. Dahlstrom, V. Zabielski, T. C. Winter, D.O. Rosenberry, H. Wright, E. Ito, J.L. Nieber, W.J. Gutowski Jr.
2006, Conference Paper, Journal of Hydrology
This paper analyzes the effects of geology and geomorphology on surface-water/-groundwater interactions, evapotranspiration, and recharge under conditions of long-term climatic change. Our analysis uses hydrologic data from the glaciated Crow Wing watershed in central Minnesota, USA, combined with a hydrologic model of transient coupled unsaturated/saturated flow (HYDRAT2D). Analysis of historical...
Resolving structural influences on water-retention properties of alluvial deposits
K.A. Winfield, J. R. Nimmo, J. A. Izbicki, P. M. Martin
2006, Vadose Zone Journal (5) 706-719
With the goal of improving property-transfer model (PTM) predictions of unsaturated hydraulic properties, we investigated the influence of sedimentary structure, defined as particle arrangement during deposition, on laboratory-measured water retention (water content vs. potential [θ(ψ)]) of 10 undisturbed core samples from alluvial deposits in the western Mojave Desert, California. The...
CO2 outgassing in a combined fracture and conduit karst aquifer near lititz spring, Pennsylvania
L. Toran, E. Roman
2006, Special Paper of the Geological Society of America 275-282
Lititz Spring in southeastern Pennsylvania and a nearby domestic well were sampled for 9 months. Although both locations are connected to conduits (as evidenced by a tracer test), most of the year they were saturated with respect to calcite, which is more typical of matrix flow. Geochemical modeling (PHREEQC) was...
A broadscale fish-habitat model development process: Genesee Basin, New York
James E. McKenna Jr., Richard R. McDonald, Chris Castiglione, Sandy S. Morrison, Kurt P. Kowalski, Dora R. May Passino
2006, Book chapter, Landscape influences on stream habitats and biological assemblages
We describe a methodology for developing species-habitat models using available fish and stream habitat data from New York State, focusing on the Genesee basin. Electrofishing data from the New York Department of Environmental Conservation were standardized and used for model development and testing. Four types of predictive models (multiple linear...
Evaluation of a lake whitefish bioenergetics model
Charles P. Madenjian, Daniel V. O’Connor, Steven A. Pothoven, Philip J. Schneeberger, Richard R. Rediske, James P. O'Keefe, Roger A. Bergstedt, Ray L. Argyle, Stephen B. Brandt
2006, Transactions of the American Fisheries Society (135) 61-75
We evaluated the Wisconsin bioenergetics model for lake whitefish Coregonus clupeaformis in the laboratory and in the field. For the laboratory evaluation, lake whitefish were fed rainbow smelt Osmerus mordax in four laboratory tanks during a 133-d experiment. Based on a comparison of bioenergetics model predictions of lake whitefish food...
Growth history of Kilauea inferred from volatile concentrations in submarine-collected basalts
Michelle L. Coombs, Thomas W. Sisson, Peter W. Lipman
2006, Journal of Volcanology and Geothermal Research (151) 19-49
Major-element and volatile (H2O, CO2, S) compositions of glasses from the submarine flanks of Kilauea Volcano record its growth from pre-shield into tholeiite shield-stage. Pillow lavas of mildly alkalic basalt at 2600–1900 mbsl on the upper slope of the south flank are an intermediate link...
Habitat preferences and intraspecific competition in black-footed ferrets
Dean E. Biggins, Jerry L. Godbey, Marc R. Matchett, Travis M. Livieri
2006, Conference Paper, Recovery of the black-footed ferret: Progress and continuing challenges- Proceedings of the Symposium on the Status of the Black-footed Ferret and Its Habitat, Fort Collins, Colorado, January 28-29, 2004 (Scientific Investigations Report 2005-5293)
We used radio-telemetry data (28,560 positional fixes) collected on 153 black-footed ferrets (Mustela nigripes) to (1) reexamine the assumed obligate relationship of these ferrets to prairie dogs (Cynomys spp.), (2) investigate habitat preferences of ferrets at a small scale (1 year (P = 0.048). Also, preference was stronger for wild-born...
The quest for a safe and effective canine distemper virus vaccine for black-footed ferrets
Jeffrey Wimsatt, Dean E. Biggins, Elizabeth S. Williams, Victor M. Becerra
2006, Conference Paper, Recovery of the black-footed ferret: Progress and continuing challenges- Proceedings of the Symposium on the Status of the Black-footed Ferret and Its Habitat, Fort Collins, Colorado, January 28-29, 2004 (Scientific Investigations Report 2005-5293)
Canine distemper virus (CDV) causes a systemic disease that is highly virulent to mustelids and other carnivore (Order Carnivora) species and is found worldwide. Endemic canine distemper in wild and domestic carnivores in the United States has made reintroduction of endangered black-footed ferrets (Mustela nigripes) difficult in the absence of...
Trends in the nutrient enrichment of U.S. rivers during the late 20th century and their relation to changes in probable stream trophic conditions
R. B. Alexander, R. A. Smith
2006, Conference Paper, Limnology and Oceanography
We estimated trends in concentrations of total phosphorus (TP) and total nitrogen (TN) and the related change in the probabilities of trophic conditions from 1975 to 1994 at 250 nationally representative riverine monitoring locations in the U.S. with drainage areas larger than about 1,000 km2. Statistically significant (p < 0.05)...
Demographic patterns of postfire regeneration in Mediterranean-climate shrublands of California
Jon E. Keeley, C. J. Fotheringham, M. Baer-Keeley
2006, Ecological Monographs (76) 235-255
This study uses detailed demographic data to determine the extent to which functional groupings, based on seedling recruitment and resprouting response to fire, capture the dynamics of postfire responses and early successional change in fire-prone ecosystems. Following massive wildfires in southern California, USA, we sampled chaparral and sage scrub vegetation...
Hydroecological modeling of the Lower Missouri River
H.E. Johnson, R. B. Jacobson, A. J. DeLonay
2006, Conference Paper, Proceedings of the third federal interagency hydrologic modeling conference
No abstract avaikable ...
Flood lavas on Earth, Io and Mars
Laszlo P. Keszthelyi, Stephen Self, Thorvaldur Thordarson
2006, Journal of the Geological Society (163) 253-264
Flood lavas are major geological features on all the major rocky planetary bodies. They provide important insight into the dynamics and chemistry of the interior of these bodies. On the Earth, they appear to be associated with major and mass extinction events. It is therefore not surprising that there has...
A spatial modeling approach to identify potential butternut restoration sites in Mammoth Cave National Park
L.M. Thompson, F.T. Van Manen, S.E. Schlarbaum, M. DePoy
2006, Restoration Ecology (14) 289-296
Incorporation of disease resistance is nearly complete for several important North American hardwood species threatened by exotic fungal diseases. The next important step toward species restoration would be to develop reliable tools to delineate ideal restoration sites on a landscape scale. We integrated spatial modeling and remote sensing techniques to...
Scale effects of hydrostratigraphy and recharge zonation on base flow
P. F. Juckem, R. J. Hunt, Marilyn P. Anderson
2006, Ground Water (44) 362-370
Uncertainty regarding spatial variations of model parameters often results in the simplifying assumption that parameters are spatially uniform. However, spatial variability may be important in resource assessment and model calibration. In this paper, a methodology is presented for estimating a critical basin size, above which base flows appear to be...
Modeling brook trout presence and absence from landscape variables using four different analytical methods
Paul J. Steen, Dora R. Passino-Reader, Michael J. Wiley
2006, Book chapter, Landscape influences on stream habitats and biological assemblages
As a part of the Great Lakes Regional Aquatic Gap Analysis Project, we evaluated methodologies for modeling associations between fish species and habitat characteristics at a landscape scale. To do this, we created brook trout Salvelinus fontinalis presence and absence models based on four different techniques: multiple linear regression, logistic regression, neural...
Scattered surface wave energy in the seismic coda
Y. Zeng
2006, Pure and Applied Geophysics (163) 533-548
One of the many important contributions that Aki has made to seismology pertains to the origin of coda waves (Aki, 1969; Aki and Chouet, 1975). In this paper, I revisit Aki's original idea of the role of scattered surface waves in the seismic coda. Based on the radiative transfer theory,...
Explicit use of the Biot coefficient in predicting shear-wave velocity of water-saturated sediments
Myung W. Lee
2006, Geophysical Prospecting (54) 177-185
Predicting the shear-wave (S-wave) velocity is important in seismic modelling, amplitude analysis with offset, and other exploration and engineering applications. Under the low-frequency approximation, the classical Biot-Gassmann theory relates the Biot coefficient to the bulk modulus of water-saturated sediments. If the Biot coefficient under in situ conditions can be estimated,...
Migration of the Pee Dee River system inferred from ancestral paleochannels underlying the South Carolina Grand Strand and Long Bay inner shelf
W. E. Baldwin, R.A. Morton, T.R. Putney, M.P. Katuna, M.S. Harris, P. T. Gayes, N. W. Driscoll, J. F. Denny, W. C. Schwab
2006, Geological Society of America Bulletin (118) 533-549
Several generations of the ancestral Pee Dee River system have been mapped beneath the South Carolina Grand Strand coastline and adjacent Long Bay inner shelf. Deep boreholes onshore and high-resolution seismic-reflection data offshore allow for reconstruction of these paleochannels, which formed during glacial lowstands, when the Pee Dee River system...
The chlorinated AHR ligand 3,3′,4,4′,5-pentachlorobiphenyl (PCB126) promotes reactive oxygen species (ROS) production during embryonic development in the killifish (Fundulus heteroclitus)
Xabier Arzuaga, Deena Wassenberg, Richard D. Giulio, Adria Elskus
2006, Aquatic Toxicology (76) 13-23
Exposure to dioxin-like chemicals that activate the aryl hydrocarbon receptor (AHR) can result in increased cellular and tissue production of reactive oxygen species (ROS). Little is known of these effects during early fish development. We used the fish model, Fundulus heteroclitus, to determine if the AHR ligand and pro-oxidant 3,3′,4,4′,5-pentachlorobiphenyl (PCB126)...
Forecasting effects of climate change on Great Lakes fisheries: models that link habitat supply to population dynamics can help
Michael L. Jones, Brian J. Shuter, Yingming Zhao, Jason D. Stockwell
2006, Canadian Journal of Fisheries and Aquatic Sciences (63) 457-468
Future changes to climate in the Great Lakes may have important consequences for fisheries. Evidence suggests that Great Lakes air and water temperatures have risen and the duration of ice cover has lessened during the past century. Global circulation models (GCMs) suggest future warming and increases in precipitation in the...
