Discussion of "Natural hydrograph of the Missouri River near Sioux City and the least tern and piping plover" by Donald G. Jorgensen
D. Catlin, R. Jacobson, M. Sherfy, M. Anteau, J. Felio, J. Fraser, C. Lott, T. Shaffer, J. Stucker
2010, Journal of Hydrologic Engineering (15) 1076-1078
The author analyzed stream-flow data from a single gauging station to predict preengineering flooding frequency for "sandbar islands adjacent to stream gauge on the Missouri River at Sioux City." He predicted dates that sandbars would be exposed and discussed his results relative to reproduction by least terns (Sternula antillarum) and...
Surveys for presence of Oregon spotted frog (Rana pretiosa): background information and field methods
Christopher A. Pearl, David Clayton, Lauri Turner
2010, Report
The Oregon spotted frog (Rana pretiosa) is the most aquatic of the native frogs in the Pacific Northwest. The common name derives from the pattern of black, ragged-edged spots set against a brown or red ground color on the dorsum of adult frogs. Oregon spotted frogs are generally associated with...
Postseismic relaxation following the 1994 Mw6.7 Northridge earthquake, southern California
J.C. Savage, J. L. Svarc
2010, Journal of Geophysical Research B: Solid Earth (115)
We have reexamined the postearthquake deformation of a 65 km long linear array of 11 geodetic monuments extending north–south across the rupture (reverse slip on a blind thrust dipping 40°S–20°W) associated with the 1994 Mw6.7 Northridge earthquake. That array was surveyed frequently in the interval from 4 to 2650 days...
Vegetation monitoring for Guatemala: a comparison between simulated VIIRS and MODIS satellite data
Vijendra K. Boken, Gregory L. Easson, James Rowland
2010, Geocarto International (25) 617-627
The advanced very high resolution radiometer (AVHRR) and moderate resolution imaging spectroradiometer (MODIS) data are being widely used for vegetation monitoring across the globe. However, sensors will discontinue collecting these data in the near future. National Aeronautics and Space Administration is planning to launch a new sensor, visible infrared imaging...
Coherence of Mach fronts during heterogeneous supershear earthquake rupture propagation: Simulations and comparison with observations
A. Bizzarri, Eric M. Dunham, P. Spudich
2010, Journal of Geophysical Research B: Solid Earth (115) B08301
We study how heterogeneous rupture propagation affects the coherence of shear and Rayleigh Mach wavefronts radiated by supershear earthquakes. We address this question using numerical simulations of ruptures on a planar, vertical strike-slip fault embedded in a three-dimensional, homogeneous, linear elastic half-space. Ruptures propagate spontaneously in accordance with a linear...
Repose time and cumulative moment magnitude: A new tool for forecasting eruptions?
W.A. Thelen, S. D. Malone, M.E. West
2010, Geophysical Research Letters (37)
During earthquake swarms on active volcanoes, one of the primary challenges facing scientists is determining the likelihood of an eruption. Here we present the relation between repose time and the cumulative moment magnitude (CMM) as a tool to aid in differentiating between an eruption and a period of unrest. In...
Predicted liquefaction in the greater Oakland area and northern Santa Clara Valley during a repeat of the 1868 Hayward Fault (M6.7-7.0) earthquake
Thomas L. Holzer, Thomas E. Noce, Michael J. Bennett
2010, Proceedings of the Third Conference on Earthquake Hazards in the Eastern San Francisco Bay Area 147-163
Probabilities of surface manifestations of liquefaction due to a repeat of the 1868 (M6.7-7.0) earthquake on the southern segment of the Hayward Fault were calculated for two areas along the margin of San Francisco Bay, California: greater Oakland and the northern Santa Clara Valley. Liquefaction is predicted to be more...
Worldwide status of burbot and conservation measures
Martin A. Stapanian, Vaughn L. Paragamian, Charles P. Madenjian, James R. Jackson, Jyrki Lappalainen, Matthew J. Evenson, Matthew D. Neufeld
2010, Fish and Fisheries (11) 34-56
Although burbot (Lota lota Gadidae) are widespread and abundant throughout much of their natural range, there are many populations that have been extirpated, endangered or are in serious decline. Due in part to the species’ lack of popularity as a game and commercial fish, few regions consider burbot in management...
The North American upper mantle: Density, composition, and evolution
Walter D. Mooney, Mikhail K. Kaban
2010, Journal of Geophysical Research B: Solid Earth (115)
The upper mantle of North America has been well studied using various seismic methods. Here we investigate the density structure of the North American (NA) upper mantle based on the integrative use of the gravity field and seismic data. The basis of our study is the removal of the gravitational...
Geophysical Research Letters: New policies improve top-cited geosciences journal
Eric Calais, Noah Diffenbaugh, Paolo D'Odorico, Ruth Harris, Wolfgang Knorr, Benoit Lavraud, Anne Mueller, William Peterson, Eric Rignot, Meric Srokosz, Peter Strutton, Geoff Tyndall, Michael Wysession, Paul Williams
2010, Eos, Transactions, American Geophysical Union (91) 337-337
Geophysical Research Letters (GRL) is the American Geophysical Union's premier journal of fast, groundbreaking communication. It rapidly publishes high- impact,letter-length articles, and it is the top-cited multidisciplinary geosciences journal over the past 10 years, with an impact factor that increased again in 2009, to 3.204. For manuscripts submitted to GRL,...
Decline of shortjaw cisco in Lake Superior: the role of overfishing and risk of extinction
Charles R. Bronte, Michael H. Hoff, Owen T. Gorman, Wayne E. Thogmartin, Philip J. Schneeberger, Thomas N. Todd
2010, Transactions of the American Fisheries Society (139) 735-748
Recent reviews have further documented the decline of the shortjaw cisco Coregonus zenithicus in Lake Superior. This fish was the most abundant deepwater cisco species in Lake Superior in the early 1920s but presently makes up less than 1% of all deepwater ciscoes (i.e., including shortjaw cisco, bloater C. hoyi,...
Origins of large-volume, compositionally zoned volcanic eruptions: New constraints from U-series isotopes and numerical thermal modeling for the 1912 Katmai-Novarupta eruption
Simon Turner, Mike Sandiford, Mark Reagan, Chris Hawkesworth, Wes Hildreth
2010, Journal of Geophysical Research B: Solid Earth (115) B12201
We present the results of a combined U-series isotope and numerical modeling study of the 1912 Katmai-Novarupta eruption in Alaska. A stratigraphically constrained set of samples have compositions that range from basalt through basaltic andesite, andesite, dacite, and rhyolite. The major and trace element range can be modeled by 80–90%...
Thiamine status and culture of rainbow smelt (Osmerus mordax) from Owasco Lake, New York
Marc A. Chalupnicki, H. George Ketola, Micheal H. Zehfus, Jonathan R. Crosswait, Jacques Rinchard, James E. McKenna Jr.
2010, Journal of Freshwater Ecology (25) 211-217
In 2005, 2008, and 2009, eggs were collected for analysis of total thiamine fiom 2, 58, and 30 gravid rainbow smelt (Osmerus mordax) captured in Edgewater Creek, Owasco Lake, New York, respectively. Mean egg thiamine concentrations (nmollg i standard error) in 2005, 2008, and 2009 were 6.0 ± 1.8, 13.3...
Field evaluation of a two-dimensinal hydrodynamic model near boulders for habitat calculation
Terry Waddle
2010, River Research and Applications (26) 730-741
Two-dimensional hydrodynamic models are now widely used in aquatic habitat studies. To test the sensitivity of calculated habitat outcomes to limitations of such a model and of typical field data, bathymetry, depth and velocity data were collected for three discharges in the vicinity of two large boulders in the South...
Ground surface deformation patterns, magma supply, and magma storage at Okmok volcano, Alaska, from InSAR analysis: 1. Intereruption deformation, 1997–2008
Zhong Lu, Daniel Dzurisin, Juliet Biggs, Charles Wicks Jr., Steve McNutt
2010, Journal of Geophysical Research (115)
Starting soon after the 1997 eruption at Okmok volcano and continuing until the start of the 2008 eruption, magma accumulated in a storage zone centered ~3.5 km beneath the caldera floor at a rate that varied with time. A Mogi-type point pressure source or finite sphere with a radius of...
Mount St. Helens: A 30-year legacy of volcanism
James W. Vallance, Cynthia A. Gardner, William E. Scott, Richard M. Iverson, Thomas C. Pierson
2010, Eos, Transactions, American Geophysical Union (91) 169-171
The spectacular eruption of Mount St. Helens on 18 May 1980 electrified scientists and the public. Photodocumentation of the colossal landslide, directed blast, and ensuing eruption column—which reached as high as 25 kilometers in altitude and lasted for nearly 9 hours—made news worldwide. Reconnaissance of the devastation spurred efforts to...
Ground surface deformation patterns, magma supply, and magma storage at Okmok volcano, Alaska, from InSAR analysis: 2. Coeruptive deflation, July-August 2008
Zhong Lu, Daniel Dzurisin
2010, Journal of Geophysical Research B: Solid Earth (115)
A hydrovolcanic eruption near Cone D on the floor of Okmok caldera, Alaska, began on 12 July 2008 and continued until late August 2008. The eruption was preceded by inflation of a magma reservoir located beneath the center of the caldera and ∼3 km below sea level (bsl), which began...
Volcano monitoring using GPS: Developing data analysis strategies based on the June 2007 Kīlauea Volcano intrusion and eruption
Kristine M. Larson, Michael Poland, Asta Miklius
2010, Journal of Geophysical Research B: Solid Earth (115) B07406
The global positioning system (GPS) is one of the most common techniques, and the current state of the art, used to monitor volcano deformation. In addition to slow (several centimeters per year) displacement rates, GPS can be used to study eruptions and intrusions that result in much larger (tens of...
Remotely triggered microearthquakes and tremor in central California following the 2010 Mw 8.8 Chile earthquake
Zhigang Peng, David P. Hill, David R. Shelly, Chastity Aiken
2010, Geophysical Research Letters (37)
We examine remotely triggered microearthquakes and tectonic tremor in central California following the 2010 Mw 8.8 Chile earthquake. Several microearthquakes near the Coso Geothermal Field were apparently triggered, with the largest earthquake (Ml 3.5) occurring during the large-amplitude Love surface waves. The Chile mainshock also triggered numerous tremor bursts near...
Anisotropy, repeating earthquakes, and seismicity associated with the 2008 eruption of Okmok Volcano, Alaska
Jessica H. Johnson, Stephanie Prejean, Martha K. Savage, John Townend
2010, Journal of Geophysical Research (115)
We use shear wave splitting (SWS) analysis and double-difference relocation to examine temporal variations in seismic properties prior to and accompanying magmatic activity associated with the 2008 eruption of Okmok volcano, Alaska. Using bispectrum cross-correlation, a multiplet of 25 earthquakes is identified spanning five years leading up to the eruption,...
Slow slip event at Kilauea Volcano
Michael P. Poland, Asta Miklius, J. David Wilson, Paul G. Okubo, Emily Montgomery-Brown, Paul Segall, Benjamin Brooks, James Foster, Cecily Wolfe, Ellen Syracuse, Clifford Thurbe
2010, Eos, Transactions, American Geophysical Union (91) 118-118
Early in the morning of 1 February 2010 (UTC; early afternoon 31 January 2010 local time), continuous Global Positioning System (GPS) and tilt instruments detected a slow slip event (SSE) on the south flank of Kilauea volcano, Hawaii. The SSE lasted at least 36 hours and resulted in a maximum...
CORSSA: The Community Online Resource for Statistical Seismicity Analysis
Andrew J. Michael, Stefan Wiemer
2010, Community Online Resource for Statistical Seismicity Analysis (1) 1-13
Statistical seismology is the application of rigorous statistical methods to earthquake science with the goal of improving our knowledge of how the earth works. Within statistical seismology there is a strong emphasis on the analysis of seismicity data in order to improve our scientific understanding of earthquakes and to improve...
The bioenergetic consequences of invasive-induced food web disruption to Lake Ontario alewives
Thomas J. Stewart, Robert O’Gorman, W. Gary Sprules, B.F. Lantry
2010, North American Journal of Fisheries Management (30) 1485-1504
Alewives Alosa pseudoharengus are the dominant prey fish in Lake Ontario, and their response to ecological change can alter the structure and function of the Lake Ontario food web. Using stochastic population-based bioenergetic models of Lake Ontario alewives for 1987–1991 and 2001–2005, we evaluated changes to alewife production, consumption, and...
Slow slip phenomena in Cascadia from 2007 and beyond: a review
Joan Gomberg, Cascadia 2007 and Beyond Working Group
2010, GSA Bulletin (122) 963-978
Recent technological advances combined with more detailed analyses of seismologic and geodetic observations have fundamentally changed our understanding of the ways in which tectonic stresses arising from plate motions are accommodated by slip on faults. The traditional view that relative plate motions are accommodated by a simple cycle of stress...
Sexual difference in PCB concentrations of coho salmon (Oncorhynchus kisutch)
Charles P. Madenjian, Candy S. Schrank, Linda J. Begnoche, Robert F. Elliott, Richard T. Quintal
2010, Science of the Total Environment (408) 1719-1724
We determined polychlorinated biphenyl (PCB) concentrations in 35 female coho salmon (Oncorhynchus kisutch) and 60 male coho salmon caught in Lake Michigan (Michigan and Wisconsin, United States) during the fall of 1994 and 1995. In addition, we determined PCB concentrations in the skin-on fillets of 26 female and 19 male...
