Monitoring duration and extent of storm-surge and flooding in Western Coastal Louisiana marshes with Envisat ASAR data
Elijah Ramsey III, Zhong Lu, Yukihiro Suzuoki, Amina Rangoonwala, Dirk Werle
2011, IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing (4) 387-399
Inundation maps of coastal marshes in western Louisiana were created with multitemporal Envisat Advanced Synthetic Aperture (ASAR) scenes collected before and during the three months after Hurricane Rita landfall in September 2005. Corroborated by inland water-levels, 7 days after landfall, 48% of coastal estuarine and palustrine marshes remained inundated by...
Causes of systematic over- or underestimation of low streamflows by use of index-streamgage approaches in the United States
K. Eng, J.E. Kiang, Y.-Y. Chen, D.M. Carlisle, G.E. Granato
2011, Hydrological Processes (25) 2211-2220
Low-flow characteristics can be estimated by multiple linear regressions or the index-streamgage approach. The latter transfers streamflow information from a hydrologically similar, continuously gaged basin ('index streamgage') to one with a very limited streamflow record, but often results in biased estimates. The application of the index-streamgage approach can be generalized...
In situ measurements of post-fire debris flows in southern California: Comparisons of the timing and magnitude of 24 debris-flow events with rainfall and soil moisture conditions
J. W. Kean, D.M. Staley, S.H. Cannon
2011, Journal of Geophysical Research F: Earth Surface (116)
Debris flows often occur in burned steeplands of southern California, sometimes causing property damage and loss of life. In an effort to better understand the hydrologic controls on post-fire debris-flow initiation, timing and magnitude, we measured the flow stage, rainfall, channel bed pore fluid pressure and hillslope soil-moisture accompanying 24...
Impacts of past climate and sea level change on Everglades wetlands: placing a century of anthropogenic change into a late-Holocene context
Debra A. Willard, C.E. Bernhardt
2011, Climatic Change (107) 59-80
We synthesize existing evidence on the ecological history of the Florida Everglades since its inception ~7 ka (calibrated kiloannum) and evaluate the relative impacts of sea level rise, climate variability, and human alteration of Everglades hydrology on wetland plant communities. Initial freshwater peat accumulation began between 6 and 7 ka...
U.S. Geological Survey: A synopsis of Three-dimensional Modeling
Linda J. Jacobsen, Pierre D. Glynn, Geoff A. Phelps, Randall C. Orndorff, Gerald W. Bawden, V. J. S. Grauch
2011, Book chapter, Chapter 13 in <i>Synopsis of Current Three-dimensional Geological Mapping and Modeling in Geological Survey Organizations</i>
The U.S. Geological Survey (USGS) is a multidisciplinary agency that provides assessments of natural resources (geological, hydrological, biological), the disturbances that affect those resources, and the disturbances that affect the built environment, natural landscapes, and human society. Until now, USGS map products have been generated and distributed primarily as 2-D...
Modern thermokarst lake dynamics in the continuous permafrost zone, northern Seward Peninsula, Alaska
Benjamin M. Jones, G. Grosse, C.D. Arp, M.C. Jones, Anthony K.M. Walter, V.E. Romanovsky
2011, Journal of Geophysical Research: Biogeosciences (116)
Quantifying changes in thermokarst lake extent is of importance for understanding the permafrost-related carbon budget, including the potential release of carbon via lake expansion or sequestration as peat in drained lake basins. We used high spatial resolution remotely sensed imagery from 1950/51, 1978, and 2006/07 to quantify changes in thermokarst...
Groundwater chemistry near an impoundment for produced water, Powder River Basin, Wyoming, USA
R. W. Healy, T.T. Bartos, C. A. Rice, M.P. McKinley, B. D. Smith
2011, Journal of Hydrology (403) 37-48
The Powder River Basin is one of the largest producers of coal-bed natural gas (CBNG) in the United States. An important environmental concern in the Basin is the fate of the large amounts of groundwater extracted during CBNG production. Most of this produced water is disposed of in unlined surface...
Quantification of a greenhouse hydrologic cycle from equatorial to polar latitudes: The mid-Cretaceous water bearer revisited
M.B. Suarez, Luis A. Gonzalez, Greg A. Ludvigson
2011, Palaeogeography, Palaeoclimatology, Palaeoecology (307) 301-312
This study aims to investigate the global hydrologic cycle during the mid-Cretaceous greenhouse by utilizing the oxygen isotopic composition of pedogenic carbonates (calcite and siderite) as proxies for the oxygen isotopic composition of precipitation. The data set builds on the Aptian–Albian sphaerosiderite δ18O data set presented by Ufnar et...
Methane oxidation in a crude oil contaminated aquifer: Delineation of aerobic reactions at the plume fringes
R.T. Amos, Barbara A. Bekins, Geoffrey N. Delin, Isabelle M. Cozzarelli, D.W. Blowes, J. D. Kirshtein
2011, Journal of Contaminant Hydrology (125) 13-25
High resolution direct-push profiling over short vertical distances was used to investigate CH4 attenuation in a petroleum contaminated aquifer near Bemidji, Minnesota. The contaminant plume was delineated using dissolved gases, redox sensitive components, major ions, carbon isotope ratios in CH4 and CO2, and the presence of methanotrophic bacteria. Sharp redox gradients were observed near the...
The dynamical core, physical parameterizations, and basic simulation characteristics of the atmospheric component AM3 of the GFDL global coupled model CM3
L.J. Donner, B.L. Wyman, R.S. Hemler, L.W. Horowitz, Y. Ming, M. Zhao, J.-C. Golaz, P. Ginoux, S.-J. Lin, M.D. Schwarzkopf, J. Austin, G. Alaka, W.F. Cooke, T.L. Delworth, S.M. Freidenreich, C.T. Gordon, S.M. Griffies, I.M. Held, W.J. Hurlin, S.A. Klein, T.R. Knutson, A.R. Langenhorst, H.-C. Lee, Y. Lin, B.I. Magi, S.L. Malyshev, Paul Milly, V. Naik, M.J. Nath, R. Pincus, J.J. Ploshay, V. Ramaswamy, C.J. Seman, E. Shevliakova, J.J. Sirutis, W.F. Stern, R.J. Stouffer, R.J. Wilson, M. Winton, A.T. Wittenberg, F. Zeng
2011, Journal of Climate (24) 3484-3519
The Geophysical Fluid Dynamics Laboratory (GFDL) has developed a coupled general circulation model (CM3) for the atmosphere, oceans, land, and sea ice. The goal of CM3 is to address emerging issues in climate change, including aerosol–cloud interactions, chemistry–climate interactions, and coupling between the troposphere and stratosphere. The model is also...
Long-term patterns and short-term dynamics of stream solutes and suspended sediment in a rapidly weathering tropical watershed
James B. Shanley, W. H. McDowell, Robert F. Stallard
2011, Water Resources Research (47)
The 326 ha Río Icacos watershed in the tropical wet forest of the Luquillo Mountains, northeastern Puerto Rico, is underlain by granodiorite bedrock with weathering rates among the highest in the world. We pooled stream chemistry and total suspended sediment (TSS) data sets from three discrete periods: 1983–1987, 1991–1997, and...
Occurrence of azoxystrobin, propiconazole, and selected other fungicides in US streams, 2005-2006
William A. Battaglin, Mark W. Sandstrom, Kathryn Kuivila, Dana W. Kolpin, Michael T. Meyer
2011, Water, Air, & Soil Pollution (218) 307-322
Fungicides are used to prevent foliar diseases on a wide range of vegetable, field, fruit, and ornamental crops. They are generally more effective as protective rather than curative treatments, and hence tend to be applied before infections take place. Less than 1% of US soybeans were treated with a fungicide...
Estimating trends in alligator populations from nightlight survey data
Ikuko Fujisaki, F.J. Mazzotti, R.M. Dorazio, Kenneth G. Rice, M. Cherkiss, B. Jeffery
2011, Wetlands (31) 147-155
Nightlight surveys are commonly used to evaluate status and trends of crocodilian populations, but imperfect detection caused by survey- and location-specific factors makes it difficult to draw population inferences accurately from uncorrected data. We used a two-stage hierarchical model comprising population abundance and detection probability to examine recent abundance trends...
Secular trends in storm-level geomagnetic activity
J.J. Love
2011, Annales Geophysicae (29) 251-262
Analysis is made of K-index data from groups of ground-based geomagnetic observatories in Germany, Britain, and Australia, 1868.0–2009.0, solar cycles 11–23. Methods include nonparametric measures of trends and statistical significance used by the hydrological and climatological research communities. Among the three observatory groups, German K data systematically record the highest disturbance levels,...
Influence of changing water sources and mineral chemistry on the everglades ecosystem
Paul V. McCormick, Judson Harvey, Eric Crawford
2011, Critical Reviews in Environmental Science and Technology (41) 28-63
Human influences during the previous century increased mineral inputs to the Florida Everglades by changing the sources and chemistry of surface inflows. Biogeochemical responses to this enrichment include changes in the availability of key limiting nutrients such as P, the potential for increased turnover of nutrient pools due to accelerated...
Canopy water balance of windward and leeward Hawaiian cloud forests on Haleakalā, Maui, Hawai'i
Thomas W. Giambelluca, John K. DeLay, Michael A. Nullet, Martha A. Scholl, Stephen B. Gingerich
2011, Hydrological Processes (25) 438-447
The contribution of intercepted cloud water to precipitation at windward and leeward cloud forest sites on the slopes of Haleakalā, Maui was assessed using two approaches. Canopy water balance estimates based on meteorological monitoring were compared with interpretations of fog screen measurements collected over a 2-year period at each location....
Hydrological mobilization of mercury and dissolved organic carbon in a snow-dominated, forested watershed: Conceptualization and modeling
J. Schelker, Douglas A. Burns, M. Weiler, H. Laudon
2011, Journal of Geophysical Research G: Biogeosciences (116)
The mobilization of mercury and dissolved organic carbon (DOC) during snowmelt often accounts for a major fraction of the annual loads. We studied the role of hydrological connectivity of riparian wetlands and upland/wetland transition zones to surface waters on the mobilization of Hg and DOC in Fishing Brook, a headwater...
A Digital Hydrologic Network Supporting NAWQA MRB SPARROW Modeling--MRB_E2RF1WS
J. W. Brakebill, S.E. Terziotti
2011, Report
A digital hydrologic network was developed to support SPAtially Referenced Regression on Watershed attributes (SPARROW) models within selected regions of the United States. These regions correspond with the U.S. Geological Survey's National Water Quality Assessment (NAWQA) Program Major River Basin (MRB) study units 2, 3, 4, 5, and 7 (Preston...
Environmental controls of wood entrapment in upper Midwestern streams
Eric C. Merten, Jacques Finlay, Lucinda Johnson, Raymond Newman, Heinz Stefan, Bruce C. Vondracek
2011, Hydrological Processes (25) 593-602
Wood deposited in streams provides a wide variety of ecosystem functions, including enhancing habitat for key species in stream food webs, increasing geomorphic and hydraulic heterogeneity and retaining organic matter. Given the strong role that wood plays in streams, factors that influence wood inputs, retention and transport are critical to...
Effect of tidal fluctuations on transient dispersion of simulated contaminant concentrations in coastal aquifers
Ivana La Licata, Christian D. Langevin, Alyssa M. Dausman, Luca Alberti
2011, Hydrogeology Journal (19) 1313-1322
Variable-density groundwater models require extensive computational resources, particularly for simulations representing short-term hydrologic variability such as tidal fluctuations. Saltwater-intrusion models usually neglect tidal fluctuations and this may introduce errors in simulated concentrations. The effects of tides on simulated concentrations in a coastal aquifer were assessed. Three analyses are reported: in...
A perspective on nonstationarity and water management
R.M. Hirsch
2011, Journal of the American Water Resources Association (47) 436-446
This essay offers some perspectives on climate-related nonstationarity and water resources. Hydrologists must not lose sight of the many sources of nonstationarity, recognizing that many of them may be of much greater magnitude than those that may arise from climate change. It is paradoxical that statistical and deterministic approaches give...
Demasculinization of male fish by wastewater treatment plant effluent
A.M. Vajda, Larry B. Barber, James L. Gray, E.M. Lopez, A.M. Bolden, H.L. Schoenfuss, D.O. Norris
2011, Aquatic Toxicology (103) 213-221
Adult male fathead minnows (Pimephales promelas) were exposed to effluent from the City of Boulder, Colorado wastewater treatment plant (WWTP) under controlled conditions in the field to determine if the effluent induced reproductive disruption in fish. Gonadal intersex and other evidence of...
Arsenic in sediments, groundwater, and streamwater of a glauconitic Coastal Plain terrain, New Jersey, USA-Chemical " fingerprints" for geogenic and anthropogenic sources
Julia Barringer, Pamela A. Reilly, D. D. Eberl, A.E. Blum, J.L. Bonin, Robert Rosman, B. Hirst, M. Alebus, K. Cenno, M. Gorska
2011, Applied Geochemistry (26) 763-776
Glauconite-bearing deposits are found worldwide, but As levels have been determined for relatively few. The As content of glauconites in sediments of the Inner Coastal Plain of New Jersey can exceed 100 mg/kg, and total As concentrations (up to 5.95 μg/L) found historically and recently in streamwaters exceed the State standard. In...
Estimation of mussel population response to hydrologic alteration in a southeastern U.S. stream
James T. Peterson, J.M. Wisniewski, C.P. Shea, Jackson C. Rhett
2011, Environmental Management (48) 109-122
The southeastern United States has experienced severe, recurrent drought, rapid human population growth, and increasing agricultural irrigation during recent decades, resulting in greater demand for the water resources. During the same time period, freshwater mussels (Unioniformes) in the region have experienced substantial population declines. Consequently, there is growing interest in...
Comparison of bottom-track to global positioning system referenced discharges measured using an acoustic Doppler current profiler
Chad R. Wagner, David S. Mueller
2011, Journal of Hydrology (401) 250-258
A negative bias in discharge measurements made with an acoustic Doppler current profiler (ADCP) can be caused by the movement of sediment on or near the streambed. The integration of a global positioning system (GPS) to track the movement of the ADCP can be used to avoid the systematic negative...
