The 2009 eruption of Redoubt Volcano, Alaska
Katharine F. Bull, Cheryl Cameron, Michelle L. Coombs, Angie Diefenbach, Taryn Lopez, Steve McNutt, Christina A. Neal, Allison Payne, John A. Power, David J. Schneider, William E. Scott, Seth Snedigar, Glenn Thompson, Kristi L. Wallace, Christopher F. Waythomas, Peter Webley, Cynthia A. Werner
Janet R. Schaefer, editor(s)
2012, Report of Investigations of the Alaska Department of Natural Resources, Division of Geological & Geophysical Surveys 2011-5
Redoubt Volcano, an ice-covered stratovolcano on the west side of Cook Inlet, erupted in March 2009 after several months of escalating unrest. The 2009 eruption of Redoubt Volcano shares many similarities with eruptions documented most recently at Redoubt in 1966–68 and 1989–90. In each case, the eruptive phase lasted several...
Structural equation modeling and the analysis of long-term monitoring data
James B. Grace, Jon E. Keeley, Darren Johnson, A Kenneth Bollen Kenneth
2012, Book chapter, Design and analysis of long-term ecological monitoring studies
The analysis of long-term monitoring data is increasingly important; not only for the discovery and documentation of changes in environmental systems, but also as an enterprise whose fruits validate the allocation of effort and scarce funds to monitoring. In simple terms, we may distinguish between the detection of change in...
Rapid late Pleistocene/Holocene uplift and coastal evolution of the southern Arabian (Persian) Gulf
Warren W. Wood, Richard M. Bailey, B. A. Hampton, Thomas F. Kraemer, Zhong Lu, David W. Clark, Rhodri H. R. James, Khalid Al Ramadan
2012, Quaternary Research (77) 215-220
The coastline along the southern Arabian Gulf between Al Jubail, Kingdom of Saudi Arabia, and Dubai, UAE, appears to have risen at least 125 m in the last 18,000 years. Dating and topographic surveying of paleo-dunes (43–53 ka), paleo-marine terraces (17–30 ka), and paleo-marine shorelines (3.3–5.5 ka)...
Wintering waterfowl respond to Wetlands Reserve Program lands in the Central Valley of California
Jeffrey J. Buler, Wylie C. Barrow Jr., Lori A. Randall
2012, Report
Daytime use by wintering waterfowl at Wetlands Reserve Program (WRP) sites within the northern Central Valley of California (CVC) increased dramatically after wetland restoration and was sustained for up to 8 years post-restoration. The magnitude of the increase in waterfowl density at WRP sites after wetland restoration was greater with...
Sensitivity of spring phenology to warming across temporal and spatial climate gradients in two independent databases
Benjamin I. Cook, Elizabeth M. Wolkovich, T. Jonathan Davies, Toby R. Ault, Julio L. Betancourt, Jenica M. Allen, Kjell Bolmgren, Elsa E. Cleland, Theresa Crimmins, Nathan J. B. Kraft, Lesley T. Lancaster, Susan J. Mazer, Gregory J. McCabe, Brian J. McGill, Camille Parmesan, Stephanie Pau, James Regetz, Nicolas Salamin, Mark D. Schwartz, Steven E. Travers
2012, Ecosystems (15) 1283-1294
Disparate ecological datasets are often organized into databases post hoc and then analyzed and interpreted in ways that may diverge from the purposes of the original data collections. Few studies, however, have attempted to quantify how biases inherent in these data (for example, species richness, replication, climate) affect their suitability...
Extended Kalman Filter framework for forecasting shoreline evolution
Joseph Long, Nathaniel G. Plant
2012, Geophysical Research Letters (39)
A shoreline change model incorporating both long- and short-term evolution is integrated into a data assimilation framework that uses sparse observations to generate an updated forecast of shoreline position and to estimate unobserved geophysical variables and model parameters. Application of the assimilation algorithm provides quantitative statistical estimates of combined model-data...
Helicopter electromagnetic data map ice thickness at Mount Adams and Mount Baker, Washington, USA
Carol A. Finn, Maria Deszcz-Pan, Paul A. Bedrosian
2012, Journal of Glaciology (58) 1133-1143
Ice-thickness measurements critical for flood and mudflow hazard studies are very sparse on Cascade Range (North America) volcanoes. Helicopter electromagnetic (HEM) data collected to detect hydrothermal alteration are used to determine ice thickness over portions of Mount Baker and Mount Adams volcanoes. A laterally continuous inversion method provides good estimates...
Impacts of climate change on ecosystem services
Peter Kareiva, Mary Ruckleshaus, Katie K. Arkema, Gary Geller, Evan Girvetz, Dave Goodrich, Erik Nelson, Virginia Matzek, Malin Pinsky, Walt Reid, Martin Saunders, Darius J. Semmens, Heather Tallis
2012, Book chapter, Impacts of climate change on biodiversity, ecosystems, and ecosystem services: technical input to the 2013 National Climate Assessment
Key Findings By 2050, climate change will triple the fraction of counties in the U.S. that are at high or extremely high risk of outstripping their water supplies (from 10 percent to 32 percent). The most at risk areas in the U.S. are the West, Southwest and Great Plains regions....
Unraveling Alleghanian orogenesis in southern Connecticut: The history of the Lyme Dome
Gregory J. Walsh, John N. Aleinikoff, Robert P. Wintsch
2012, Conference Paper, Guidebook for fieldtrips in Connecticut and Massachusetts
No abstract available....
Bedrock basins in the Sierra Nevada, Alta California
James G. Moore, Mary A. Gorden, Thomas W. Sisson
2012, California Archaeology (4) 99-122
A 360-km-long belt of more than 1,400 meter-sized granitic bedrock basins occurs at 1,200 to 2,500 m elevation on the west flank of the Sierra Nevada. The circular, smooth basins are 0.7 to 1.7 min diameter and are commonly 50 to 1,000 liters in volume. They are man-made as shown by their restricted...
Landslide inventory maps of the Gales Creek quadrangle, Washington County, Oregon
W. J. Burns, S. Duplantis, K. A. Mickelson, J. M. Spritzer, Ray Wells
2012, Interactive Map Series 46
No abstract available....
Repeat surveys of spawning cisco (Coregonus artedi) in western Lake Superior: Timing, distribution and composition of spawning stocks
Daniel L. Yule, Donald R. Schreiner, Peter A. Addison, Michael J. Seider, Lori M. Evrard, Steven A. Geving, Henry R. Quinlan
2012, Advances in Limnology (63) 65-87
Acoustic (AC) and midwater trawl (MT) surveys of spawning cisco (Coregonus artedi) in Lake Superior have been combined with commercial yield to estimate exploitation. To time surveys properly, it is important to understand when adults typically arrive at spawning grounds and how numbers change as the spawning season progresses. We...
Significant motions between GPS sites in the New Madrid region: implications for seismic hazard
Arthur Frankel, Robert Smalley, J. Paul
2012, Bulletin of the Seismological Society of America (102) 479-489
Position time series from Global Positioning System (GPS) stations in the New Madrid region were differenced to determine the relative motions between stations. Uncertainties in rates were estimated using a three‐component noise model consisting of white, flicker, and random walk noise, following the methodology of Langbein, 2004. Significant motions of...
Sources of shaking and flooding during the Tohoku-Oki earthquake: a mixture of rupture styles
Shengji Wei, Robert Graves, Don Helmberger, Jean-Philippe Avouac, Junle Jiang
2012, Earth and Planetary Science Letters (333-334) 91-100
Modeling strong ground motions from great subduction zone earthquakes is one of the great challenges of computational seismology. To separate the rupture characteristics from complexities caused by 3D sub-surface geology requires an extraordinary data set such as provided by the recent Mw9.0 Tohoku-Oki earthquake. Here we combine deterministic inversion and...
Analysis of host genetic diversity and viral entry as sources of between-host variation in viral load
Andrew R. Wargo, Alison M. Kell, Robert J. Scott, Gary H. Thorgaard, Gael Kurath
2012, Virus Research (165) 71-80
Little is known about the factors that drive the high levels of between-host variation in pathogen burden that are frequently observed in viral infections. Here, two factors thought to impact viral load variability, host genetic diversity and stochastic processes linked with viral entry into the host, were examined. This work...
Establishment of sentinel sampling sites to monitor changes in water and sediment quality and biota related to visitor use at Lake Powell, Arizona and Utah, 2004-2006
Robert J. Hart, Howard E. Taylor, G.M. Anderson
2012, Open-File Report 2012-1237
Twenty sentinel sampling sites were established and sampled during 2004–06 at Lake Powell, Arizona and Utah, by the U.S. Geological Survey and the National Park Service—Glen Canyon National Recreation Area. The sentinel sampling sites provide sampling locations on Lake Powell, the Nation’s second largest reservoir that can be visited and...
Subsidy or subtraction: how do terrestrial inputs influence consumer production in lakes?
Stuart E. Jones, Christopher T. Solomon, Brian Weidel
2012, Freshwater Reviews (5) 37-49
Cross-ecosystem fluxes are ubiquitous in food webs and are generally thought of as subsidies to consumer populations. Yet external or allochthonous inputs may in fact have complex and habitat-specific effects on recipient ecosystems. In lakes, terrestrial inputs of organic carbon contribute to basal resource availability, but can also reduce resource...
Mysis diluviana and Hemimysis anomala: reviewing the roles of a native and invasive mysid in the Laurentian Great Lakes region
Maureen G. Walsh, Brent T. Boscarino, Jerome Marty, Ora E. Johannsson
2012, Journal of Great Lakes Research (38) 1-6
Mysis diluviana and Hemimysis anomala are the only two species of mysid shrimps in the order Mysidacea that are present in the Laurentian Great Lakes of North America. M. diluviana has inhabited the deep, cold waters of this region since Pleistocene-era glacial retreat and is widely considered to have a...
A general theory of multimetric indices and their properties
Donald R. Schoolmaster Jr., James B. Grace, E. William Schweiger
2012, Methods in Ecology and Evolution (3) 773-781
1. Stewardship of biological and ecological resources requires the ability to make integrative assessments of ecological integrity. One of the emerging methods for making such integrative assessments is multimetric indices (MMIs). These indices synthesize data, often from multiple levels of biological organization, with the goal of deriving a single index...
Population genetic structure of a widespread coniferous tree, Taxodium distichum [L.] Rich. (Cupressaceae), in the Mississippi River Alluvial Valley and Florida
Ayako Tanaka, Masato Ohtani, Yoshihisa Suyama, Nobuyuki Inomata, Yoshihiko Tsumura, Beth A. Middleton, Hidenori Tachida, Junko Kusumi
2012, Tree Genetics and Genomes (8) 1135-1147
Studies of genetic variation can elucidate the structure of present and past populations as well as the genetic basis of the phenotypic variability of species. Taxodium distichum is a coniferous tree dominant in lowland river flood plains and swamps of the southeastern USA which exhibits morphological variability and adaption to...
Application of the control volume mixed finite element method to a triangular discretization
Richard L. Naff
2012, International Journal for Numerical Methods in Engineering (89) 846-868
A two‐dimensional control volume mixed finite element method is applied to the elliptic equation. Discretization of the computational domain is based in triangular elements. Shape functions and test functions are formulated on the basis of an equilateral reference triangle with unit edges. A pressure support based on...
Loss and modification of habitat
Francis Lemckert, Stephen Hecnar, David S. Pilliod
2012, Book chapter, Conservation and decline of amphibians: Ecological aspects, effect of humans, and management
Amphibians live in a wide variety of habitats around the world, many of which have been modified or destroyed by human activities. Most species have unique life history characteristics adapted to specific climates, habitats (e.g., lentic, lotic, terrestrial, arboreal, fossorial, amphibious), and local conditions that provide suitable areas for reproduction,...
Digital elevation model generation from satellite interferometric synthetic aperture radar: Chapter 5
Zhong Lu, Daniel Dzurisin, Hyung-Sup Jung, Lei Zhang, Wonjin Lee, Chang-Wook Lee
2012, Book chapter, Advances in mapping from remote sensor imagery
An accurate digital elevation model (DEM) is a critical data set for characterizing the natural landscape, monitoring natural hazards, and georeferencing satellite imagery. The ideal interferometric synthetic aperture radar (InSAR) configuration for DEM production is a single-pass two-antenna system. Repeat-pass single-antenna satellite InSAR imagery, however, also can be used to...
A Bayesian method to rank different model forecasts of the same volcanic ash cloud: Chapter 24
Roger P. Denlinger, P. Webley, Larry G. Mastin, Hans F. Schwaiger
2012, Book chapter, Lagrangian Modeling of the Atmosphere
Volcanic eruptions often spew fine ash high into the atmosphere, where it is carried downwind, forming long ash clouds that disrupt air traffic and pose a hazard to air travel. To mitigate such hazards, the community studying ash hazards must assess risk of ash ingestion for any flight path and...
New Zealand’s deadliest quake sounds alarm for cities on fault lines
Erol Kalkan
2012, Natural Hazards Observer (36) 1-4
The catastrophic Christ Church Earthquake is a strong reminder to engineers and scientists of the hazards pose by fault lines, both mapped and unknown, near major cities. In February 2011, the relatively moderate earthquake that struck the cities of Christchurch and Lyttleton in the Canterbury region of New Zealand's South...
