Ground settlement monitoring from temporarily persistent scatterers between two SAR acquisitions
Z. Lei, D. Xiaoli, F. Guangcai, L. Zhong
2009, Conference Paper, 2009 Joint Urban Remote Sensing Event
We present an improved differential interferometric synthetic aperture radar (DInSAR) analysis method that measures motions of scatterers whose phases are stable between two SAR acquisitions. Such scatterers are referred to as temporarily persistent scatterers (TPS) for simplicity. Unlike the persistent scatterer InSAR (PS-InSAR) method that relies on a time-series of...
Rock slope stability analysis along the North Carolina section of the Blue Ridge Parkway: Using a geographic information system (GIS) to integrate site data and digital geologic maps
R.S. Latham, R.M. Wooten, B.L. Cattanach, C.E. Merschat, G.N. Bozdog
2009, Conference Paper, 43rd U.S. Rock Mechanics Symposium and 4th U.S.-Canada Rock Mechanics Symposium
In 2008, the North Carolina Geological Survey (NCGS) completed a five-year geologic and geohazards inventory of the 406-km long North Carolina segment of the Blue Ridge Parkway (BRP). The ArcGIS™ format deliverables for rock slopes include a slope movement and slope movement deposit database and maps...
A method for assigning species into groups based on generalized Mahalanobis distance between habitat model coefficients
C.J. Williams, P.J. Heglund
2009, Environmental and Ecological Statistics (16) 495-513
Habitat association models are commonly developed for individual animal species using generalized linear modeling methods such as logistic regression. We considered the issue of grouping species based on their habitat use so that management decisions can be based on sets of species rather than individual species. This research was motivated...
Scaling effects in direct shear tests
A.D. Orlando, D.M. Hanes, H.H. Shen
2009, Conference Paper, AIP Conference Proceedings
Laboratory experiments of the direct shear test were performed on spherical particles of different materials and diameters. Results of the bulk friction vs. non-dimensional shear displacement are presented as a function of the non-dimensional particle diameter. Simulations of the direct shear test were performed using the Discrete Element Method (DEM)....
An introduction to global carbon cycle management
Eric T. Sundquist, Katherine V. Ackerman, Lauren Parker, Deborah N. Huntzinger
2009, Book chapter, Carbon Sequestration and Its Role in the Global Carbon Cycle
Past and current human activities have fundamentally altered the global carbon cycle. Potential future efforts to control atmospheric CO2 will also involve significant changes in the global carbon cycle. Carbon cycle scientists and engineers now face not only the difficulties of recording and understanding past and present changes but also...
The increasing wildfire and post-fire debris-flow threat in western USA, and implications for consequences of climate change
Susan H. Cannon, Jerry DeGraff
2009, Book chapter, This is a chapter in the book <i>Landslides � Disaster Risk Reduction</i>
In southern California and the intermountain west of the USA, debris flows generated from recently-burned basins pose significant hazards. Increases in the frequency and size of wildfires throughout the western USA can be attributed to increases in the number of fire ignitions, fire suppression practices, and climatic influences. Increased urbanization...
Preface
Brian J. McPherson, Eric T. Sundquist
2009, Book chapter, Carbon sequestration and Its role in the global carbon cycle
Carbon sequestration has emerged as an important option in policies to mitigate the increasing atmospheric concentrations of anthropogenic carbon dioxide (CO2). Significant quantities of anthropogenic CO2 are sequestered by natural carbon uptake in plants, soils, and the oceans. These uptake processes are objects of intense study by biogeochemists, ecologists, and...
Constraints on the depth of generation and emplacement of a magmatic epidote-bearing quartz diorite pluton in the Coast Plutonic Complex, British Columbia
J.M. Chang, C.L. Andronicos
2009, Terra Nova (21) 480-488
Petrology and P–T estimates indicate that a magmatic epidote-bearing quartz diorite pluton from Mt. Gamsby, Coast Plutonic Complex, British Columbia, was sourced at pressures below ∼1.4 GPa and cooled nearly isobarically at ∼0.9 GPa. The P–T path indicates that the magma was within the stability field of magmatic epidote...
The Mackenzie River magnetic anomaly, Yukon and Northwest Territories, Canada-Evidence for Early Proterozoic magmatic arc crust at the edge of the North American craton
M. Pilkington, R. W. Saltus
2009, Tectonophysics (478) 78-86
We characterize the nature of the source of the high-amplitude, long-wavelength, Mackenzie River magnetic anomaly (MRA), Yukon and Northwest Territories, Canada, based on magnetic field data collected at three different altitudes: 300 m, 3.5 km and 400 km. The MRA is the largest amplitude (13 nT)...
Evaluation of a moderate resolution, satellite-based impervious surface map using an independent, high-resolution validation data set
J. W. Jones, T. Jarnagin
2009, Journal of Hydrologic Engineering (14) 369-376
Given the relatively high cost of mapping impervious surfaces at regional scales, substantial effort is being expended in the development of moderate-resolution, satellite-based methods for estimating impervious surface area (ISA). To rigorously assess the accuracy of these data products high quality, independently derived validation data are needed. High-resolution data were...
Widespread occurrence of intersex in black basses (Micropterus spp.) from U.S. rivers, 1995-2004
J.E. Hinck, V. S. Blazer, C. J. Schmitt, D. M. Papoulias, D. E. Tillitt
2009, Aquatic Toxicology (95) 60-70
Intersex occurrence in freshwater fishes was evaluated for nine river basins in the United States. Testicular oocytes (predominantly male testes containing female germ cells) were the most pervasive form of intersex observed, even though similar numbers of male (n = 1477) and female (n = 1633) fish were examined. Intersex...
Field tests prove microscale NRU to upgrade low-btu gas
Saibal Bhattacharya, K. David Newell, W. Lynn Watney, Micael Sigel
2009, Oil & Gas Journal (107) 44-53
The Kansas Geological Survey (University of Kansas) and the American Energies Corp., Wichita, have conducted field tests of a scalable, microscale, N2-rejection unit (NRU) to demonstrate its effectiveness to upgrade low-pressure ((<100 psig) and low-volume (=100 Mcfd) low-btu gas to pipeline quality. The tests aim to develop inexpensive NRU technology,...
Male songbirds provide indirect parental care by guarding females during incubation
B.C. Fedy, T. E. Martin
2009, Behavioral Ecology (20) 1034-1038
Across many taxa, guarding of fertile mates is a widespread tactic that enhances paternity assurance. However, guarding of mates can also occur during the nonfertile period, and the fitness benefits of this behavior are unclear. Male songbirds, for example, sometimes guard nonfertile females during foraging recesses from incubation. We hypothesized...
Can kittiwakes smell? Experimental evidence in a larid species
S. Leclaire, Herve Mulard, R.H. Wagner, Scott A. Hatch, E. Danchin
2009, Ibis (151) 584-587
Birds have long been thought to have a poor sense of smell, although they have the proper anatomical and neurological structures for detecting olfactory cues (Roper 1999). However, in the past decade several bird species have been shown to use smell in various contexts, such as foraging (Nevitt et al. 1995), navigation (Wallraff...
Historic geomorphology of the San Pedro River: archival and physical evidence
R. Hereford, Julio L. Betancourt
J. Stromberg, B. Tellman, editor(s)
2009, Book chapter, Ecology and Conservation of Desert Riparian Ecosystems: The San Pedro River Example
Re-greening the Sahel: Farmer-led innovation in Burkina Faso and Niger
Chris Reij, Melinda Smale, G. Gray Tappan
David J. Spielman, Rajul Pandya-Lorch, editor(s)
2009, Book chapter, Millions fed: Proven successes in agricultural development
The Sahel—the belt of land that stretches across Africa on the southern edge of the Sahara—has always been a tough place to farm. Rainfall is low and droughts are frequent. The crust of hard soil is, at times, almost impermeable, and harsh winds threaten to sweep away everything in their...
Cutler Group alluvial, eolian, and marine deposystems: Permian facies relations and climatic variability in the Paradox Basin
Russell F. Dubiel, Jacqueline E. Huntoon, John D. Stanesco, Steven M. Condon
William S. Houston, Laura L. Wray, Peter G. Moreland, editor(s)
2009, Book chapter, The Paradox Basin revisited new developments in petroleum systems and basin analysis
No abstract available....
Eruption-related lahars and sedimentation response downstream of Mount Hood: Field guide to volcaniclastic deposits along the Sandy River, Oregon
Tom C. Pierson, William E. Scott, James W. Vallance, Patrick T. Pringle
Jim O’Connor, Rebecca Dorsey, Ian Madin, editor(s)
2009, Book chapter, Volcanoes to vineyards: Geologic field trips through the dynamic landscape of the Pacific Northwest
Late Holocene dome-building eruptions at Mount Hood during the Timberline and Old Maid eruptive periods resulted in numerous dome-collapse pyroclastic flows and lahars that moved large volumes of volcaniclastic sediment into temporary storage in headwater canyons of the Sandy River. During each eruptive period, accelerated sediment loading to the river...
Combined use of frequency‐domain electromagnetic and electrical resistivity surveys to delineate the freshwater/saltwater interface near saline lakes in the Nebraska Sand Hills, Nebraska, USA
John T. Ong, Eric A. White, John W. Lane Jr., Todd Halihan, Vitaly A Zlotnik
Dwain K. Butler, editor(s)
2009, Conference Paper, Proceedings of the Symposium on the Application of Geophysics to Engineering and Environmental Problems 2009
We investigate the use of frequency‐domain electromagnetic (FDEM) and electrical resistivity (ER) surveys for rapid and detailed characterization of the direction of lake‐aquifer fluxes and the configuration of salt plumes generated from saline lakes. This methodology was developed and applied at several lakes in the Nebraska Sand Hills, Nebraska, in...
Improving conceptual models of water and carbon transfer through peat
Jeffery M. McKenzie, Donald I. Siegel, Donald O. Rosenberry
Andrew J. Baird, Lisa R. Belyea, Xavier Comas, A.S. Reeve, Lee D. Slater, editor(s)
2009, Book chapter, Carbon cycling in northern peatlands: Geophysical Monograph Series
Northern peatlands store 500 × 1015 g of organic carbon and are very sensitive to climate change. There is a strong conceptual model of sources, sinks, and pathways of carbon within peatlands, but challenges remain both in understanding the hydrogeology and the linkages between carbon cycling and peat pore water...
The Tiptop coal-mine fire, Kentucky: Preliminary investigation of the measurement of mercury and other hazardous gases from coal-fire gas vents
James C. Hower, Kevin R. Henke, Jennifer M.K. O’Keefe, Mark A. Engle, Donald R. Blake, Glenn B. Stracher
2009, International Journal of Coal Geology (80) 63-67
The Tiptop underground coal-mine fire in the Skyline coalbed of the Middle Pennsylvanian Breathitt Formation was investigated in rural northern Breathitt County, Kentucky, in May 2008 and January 2009, for the purpose of determining the concentrations of carbon dioxide (CO2), carbon monoxide (CO), and mercury (Hg) in the vent and...
Pilot study to access the role of Ceratomyxa shasta infection in mortality of fall-run Chinook smolts migrating through the lower Klamath River in 2008
Scott Foott, Greg Stutzer, R. Fogerty, Hal Hansel, Steven Juhnke, John W. Beeman
2009, Report
Apparent survival and migration rate of radio-tagged hatchery subyearling Chinook salmon released at Iron Gate Hatchery was monitored in the Klamath River to see if the timing of mortality coincided with observations of ceratomyxosis in re-captured coded wire tag cohorts. Despite rapid emigration, these relatively large (mean fork length 92...
Nest site selection by greater sage-grouse in Mono County, California
Eric J. Kolada, James S. Sedinger, Michael L. Casazza
2009, Journal of Wildlife Management (73) 1333-1340
Loss of nesting habitat is believed to be a factor in the decline of greater sage-grouse (Centrocercus urophasianus) throughout its range. Few data are available for sage-grouse in Mono County, California, USA, in the most southwestern portion of the species' range. We studied habitat selection of nesting sage-grouse in Mono...
Survival and migration behavior of subyearling Chinook salmon at Lower Granite Dam
A.L. Puls, T.D. Counihan, C. E. Walker, J.M. Hardiman, I.N. Duran
2009, Report
n/a...
Cascading effects of fishing on Galapagos rocky reef communities: reanalysis using corrected data
Jorge I. Sonnenholzner, Lydia B. Ladah, Kevin D. Lafferty
2009, Marine Ecology Progress Series (375) 209-218
This article replaces Sonnenholzner et al. (2007; Mar Ecol Prog Ser 343:77–85), which was retracted on September 19, 2007, due to errors in entry of data on sea urchins. We sampled 10 highly fished and 10 (putatively) lightly fished shallow rocky reefs in the southeastern area of the...
