The High Resolution Imaging Science Experiment (HiRISE) during MRO's Primary Science Phase (PSP)
Alfred S. McEwen, Maria E. Banks, Nicole Baugh, Kris J. Becker, Aaron Boyd, James W. Bergstrom, Ross A. Beyer, Edward Bortolini, Nathan T. Bridges, Shane Byrne, Bradford Castalia, Frank C. Chuang, Larry S. Crumpler, Ingrid J. Daubar, Alix K. Davatzes, Donald G. Deardorff, Alaina DeJong, W. Alan Delamere, Eldar Z. Noe Dobrea, Colin M. Dundas, Eric M. Eliason, Yisrael Espinoza, Audrie Fennema, Kathryn E. Fishbaugh, Terry Forrester, Paul E. Geissler, John A. Grant, Jennifer L. Griffes, John P. Grotzinger, Virginia C. Gulick, Candice J. Hansen, Kenneth E. Herkenhoff, Rodney Heyd, Windy L. Jaeger, Dean Jones, Bob Kanefsky, Laszlo P. Keszthelyi, Robert King, Randolph L. Kirk, Kelly J. Kolb, Jeffrey Lasco, Alexandra Lefort, Richard Leis, Kevin W. Lewis, Sara Martinez-Alonso, Sarah Mattson, Guy K. McArthur, Michael T. Mellon, Joannah Metz, Moses P. Milazzo, Ralph E. Milliken, Tahirih Motazedian, Chris Okubo, Albert Ortiz, Andrea J. Philippoff, Joseph Plassmann, Anjani Polit, Patrick S. Russell, Christian Schaller, Mindi L. Searls, Timothy Spriggs, Steve W. Squyres, Steven Tarr, Nicolas Thomas, Bradley J. Thomson, Livio L. Tornabene, Charlie Van Houten, Circe Verba, Catherine M. Weitz, James J. Wray
2010, Icarus (205) 2-37
The High Resolution Imaging Science Experiment (HiRISE) on the Mars Reconnaissance Orbiter (MRO) acquired 8 terapixels of data in 9137 images of Mars between October 2006 and December 2008, covering ∼0.55% of the surface. Images are typically 5–6 km wide with 3-color coverage over the central 20% of the swath, and their...
The vegetation outlook (VegOut): a new method for predicting vegetation seasonal greenness
T. Tadesse, B. Wardlow, M. Hayes, M. Svoboda, J. Brown
2010, GIScience and Remote Sensing (47) 25-52
The vegetation outlook (VegOut) is a geospatial tool for predicting general vegetation condition patterns across large areas. VegOut predicts a standardized seasonal greenness (SSG) measure, which represents a general indicator of relative vegetation health. VegOut predicts SSG values at multiple time steps (two to six weeks into the future) based...
Modeling the relations between flow regime components, species traits, and spawning success of fishes in warmwater streams
S.W. Craven, J.T. Peterson, Mary C. Freeman, T.J. Kwak, E. Irwin
2010, Environmental Management (46) 181-194
Modifications to stream hydrologic regimes can have a profound influence on the dynamics of their fish populations. Using hierarchical linear models, we examined the relations between flow regime and young-of-year fish density using fish sampling and discharge data from three different warmwater streams in Illinois, Alabama, and Georgia. We used...
Hydrodynamic modeling of juvenile mussel dispersal in a large river: The potential effects of bed shear stress and other parameters
J.A. Daraio, L.J. Weber, T.J. Newton
2010, Conference Paper, Journal of the North American Benthological Society
Because unionid mussels have a parasitic larval stage, they are able to disperse upstream and downstream as larvae while attached to their host fish and with flow as juveniles after excystment from the host. Understanding unionid population ecology requires knowledge of the processes that affect juvenile dispersal prior to establishment....
Comparison of aquifer characterization approaches through steady state groundwater model validation: A controlled laboratory sandbox study
W.A. Illman, J. Zhu, A.J. Craig, D. Yin
2010, Water Resources Research (46)
Groundwater modeling has become a vital component to water supply and contaminant transport investigations. An important component of groundwater modeling under steady state conditions is selecting a representative hydraulic conductivity (K) estimate or set of estimates which defines the K field of the studied region. Currently, there are a number...
Geological mapping goes 3-D in response to societal needs
H. Thorleifson, R. C. Berg, H.A.J. Russell
2010, GSA Today (20) 27-29
The transition to 3-D mapping has been made possible by technological advances in digital cartography, GIS, data storage, analysis, and visualization. Despite various challenges, technological advancements facilitated a gradual transition from 2-D maps to 2.5-D draped maps to 3-D geological mapping, supported by digital spatial and relational databases that can...
A geostatistical approach to mapping site response spectral amplifications
E.M. Thompson, L.G. Baise, R. E. Kayen, Y. Tanaka, H. Tanaka
2010, Engineering Geology (114) 330-342
If quantitative estimates of the seismic properties do not exist at a location of interest then the site response spectral amplifications must be estimated from data collected at other locations. Currently, the most common approach employs correlations of site class with maps of surficial geology. Analogously, correlations of site class...
Calibration and use of continuous heat-type automated seepage meters for submarine groundwater discharge measurements
B.M. Mwashote, W. C. Burnett, J. Chanton, I.R. Santos, N. Dimova, P.W. Swarzenski
2010, Estuarine, Coastal and Shelf Science (87) 1-10
Submarine groundwater discharge (SGD) assessments were conducted both in the laboratory and at a field site in the northeastern Gulf of Mexico, using a continuous heat-type automated seepage meter (seepmeter). The functioning of the seepmeter is based on measurements of a temperature gradient in the water between downstream and upstream...
Functional response models to estimate feeding rates of wading birds
J.A. Collazo, J.F. Gilliam, L. Miranda-Castro
2010, Waterbirds (33) 33-40
Forager (predator) abundance may mediate feeding rates in wading birds. Yet, when modeled, feeding rates are typically derived from the purely prey-dependent Holling Type II (HoII) functional response model. Estimates of feeding rates are necessary to evaluate wading bird foraging strategies and their role in food webs; thus, models that...
A Bayesian approach to identifying structural nonlinearity using free-decay response: Application to damage detection in composites
J.M. Nichols, W.A. Link, K.D. Murphy, C.C. Olson
2010, Journal of Sound and Vibration (329) 2995-3007
This work discusses a Bayesian approach to approximating the distribution of parameters governing nonlinear structural systems. Specifically, we use a Markov Chain Monte Carlo method for sampling the posterior parameter distributions thus producing both point and interval estimates for parameters. The method is first used to identify both linear and...
Modeling fire severity in black spruce stands in the Alaskan boreal forest using spectral and non-spectral geospatial data
Kirsten M. Barrett, E.S. Kasischke, A. D. McGuire, M.R. Turetsky, E.S. Kane
2010, Remote Sensing of Environment (114) 1494-1503
Biomass burning in the Alaskan interior is already a major disturbance and source of carbon emissions, and is likely to increase in response to the warming and drying predicted for the future climate. In addition to quantifying changes to the spatial and temporal patterns of burned areas, observing variations in...
Dione's spectral and geological properties
K. Stephan, R. Jaumann, R. Wagner, R. N. Clark, D. P. Cruikshank, C. A. Hibbitts, T. Roatsch, H. Hoffmann, R. H. Brown, G. Filiacchione, B. J. Buratti, G. B. Hansen, T. B. McCord, P. D. Nicholson, K. H. Baines
2010, Icarus (206) 631-652
We present a detailed analysis of the variations in spectral properties across the surface of Saturn's satellite Dione using Cassini/VIMS data and their relationships to geological and/or morphological characteristics as seen in the Cassini/ISS images. This analysis focuses on a local region on Dione's anti-saturnian hemisphere that was observed by...
On the composition of earth's short-period seismic noise field
K.D. Koper, K. Seats, H. Benz
2010, Bulletin of the Seismological Society of America (100) 606-617
In the classic microseismic band of 5-20 sec, seismic noise consists mainly of fundamental mode Rayleigh and Love waves; however, at shorter periods seismic noise also contains a significant amount of body-wave energy and higher mode surface waves. In this study we perform a global survey of Earth's short-period seismic...
Saturn's icy satellites investigated by Cassini-VIMS. II. Results at the end of nominal mission
G. Filacchione, F. Capaccioni, R. N. Clark, J.N. Cuzzi, D. P. Cruikshank, A. Coradini, P. Cerroni, P. D. Nicholson, T. B. McCord, R. H. Brown, B. J. Buratti, F. Tosi, R.M. Nelson, R. Jaumann, K. Stephan
2010, Icarus (206) 507-523
We report the detailed analysis of the spectrophotometric properties of Saturn's icy satellites as derived by full-disk observations obtained by visual and infrared mapping spectrometer (VIMS) experiment aboard Cassini. In this paper, we have extended the coverage until the end of the Cassini's nominal mission (June 1st 2008), while a...
Hyperspectral analysis of columbia spotted frog habitat
J.P. Shive, D. S. Pilliod, C.R. Peterson
2010, Journal of Wildlife Management (74) 1387-1394
Wildlife managers increasingly are using remotely sensed imagery to improve habitat delineations and sampling strategies. Advances in remote sensing technology, such as hyperspectral imagery, provide more information than previously was available with multispectral sensors. We evaluated accuracy of high-resolution hyperspectral image classifications to identify wetlands and wetland habitat features important...
Relevance of risk predictions derived from a chronic species sensitivity distribution with cadmium to aquatic populations and ecosystems
C.A. Mebane
2010, Risk Analysis (30) 203-223
Criteria to protect aquatic life are intended to protect diverse ecosystems, but in practice are usually developed from compilations of single-species toxicity tests using standard test organisms that were tested in laboratory environments. Species sensitivity distributions (SSDs) developed from these compilations are extrapolated to set aquatic ecosystem criteria. The protectiveness...
Earth system sensitivity inferred from Pliocene modelling and data
D.J. Lunt, A.M. Haywood, G.A. Schmidt, U. Salzmann, P.J. Valdes, H.J. Dowsett
2010, Nature Geoscience (3) 60-64
Quantifying the equilibrium response of global temperatures to an increase in atmospheric carbon dioxide concentrations is one of the cornerstones of climate research. Components of the Earths climate system that vary over long timescales, such as ice sheets and vegetation, could have an important effect on this temperature sensitivity, but...
A spatial resolution threshold of land cover in estimating terrestrial carbon sequestration in four counties in Georgia and Alabama, USA
S.Q. Zhao, S. Liu, Z. Li, Terry L. Sohl
2010, Biogeosciences (7) 71-80
Changes in carbon density (i.e., carbon stock per unit area) and land cover greatly affect carbon sequestration. Previous studies have shown that land cover change detection strongly depends on spatial scale. However, the influence of the spatial resolution of land cover change information on the estimated terrestrial carbon sequestration is...
Environmental controls on drainage behavior of an ephemeral stream
K.W. Blasch, T.P.A. Ferre, J.A. Vrugt
2010, Stochastic Environmental Research and Risk Assessment (24) 1077-1087
Streambed drainage was measured at the cessation of 26 ephemeral streamflow events in Rillito Creek, Tucson, Arizona from August 2000 to June 2002 using buried time domain reflectometry (TDR) probes. An unusual drainage response was identified, which was characterized by sharp drainage from saturation to near field capacity at each...
A century of climate and ecosystem change in Western Montana: What do temperature trends portend?
G.T. Pederson, L.J. Graumlich, D.B. Fagre, T. Kipfer, C.C. Muhlfeld
2010, Climatic Change (98) 133-154
The physical science linking human-induced increases in greenhouse gasses to the warming of the global climate system is well established, but the implications of this warming for ecosystem processes and services at regional scales is still poorly understood. Thus, the objectives of this work were to: (1) describe rates of...
Evaluating the spatiotemporal variations of water budget across China over 1951-2006 using IBIS model
Q. Zhu, H. Jiang, J. Liu, X. Wei, C. Peng, X. Fang, S. Liu, G. Zhou, S. Yu, W. Ju
2010, Hydrological Processes (24) 429-445
The Integrated Biosphere Simulator is used to evaluate the spatial and temporal patterns of the crucial hydrological variables [run-off and actual evapotranspiration (AET)] of the water balance across China for the period 1951–2006 including a precipitation analysis. Results suggest three major findings. First, simulated run-off captured 85% of the spatial...
Estimating length of avian incubation and nestling stages in afrotropical forest birds from interval-censored nest records
T.R. Stanley, W.D. Newmark
2010, The Auk (127) 79-85
In the East Usambara Mountains in northeast Tanzania, research on the effects of forest fragmentation and disturbance on nest survival in understory birds resulted in the accumulation of 1,002 nest records between 2003 and 2008 for 8 poorly studied species. Because information on the length of the incubation and nestling...
Ensemble habitat mapping of invasive plant species
T.J. Stohlgren, P. Ma, S. Kumar, M. Rocca, J.T. Morisette, C. S. Jarnevich, N. Benson
2010, Risk Analysis (30) 224-235
Ensemble species distribution models combine the strengths of several species environmental matching models, while minimizing the weakness of any one model. Ensemble models may be particularly useful in risk analysis of recently arrived, harmful invasive species because species may not yet have spread to all suitable habitats, leaving species-environment relationships...
Spatial distribution of pingos in Northern Asia
G. Grosse, Benjamin M. Jones
2010, Cryosphere Discussions (4) 1781-1837
Pingos are prominent periglacial landforms in vast regions of the Arctic and Subarctic. They are indicators of modern and past conditions of permafrost, surface geology, hydrology and climate. A first version of a detailed spatial geodatabase of more than 6000 pingo locations in a 3.5 ?? 106 km2 region of...
Accuracy of gap analysis habitat models in predicting physical features for wildlife-habitat associations in the southwest U.S.
K.G. Boykin, B.C. Thompson, S. Propeck-Gray
2010, Ecological Modelling (221) 2769-2775
Despite widespread and long-standing efforts to model wildlife-habitat associations using remotely sensed and other spatially explicit data, there are relatively few evaluations of the performance of variables included in predictive models relative to actual features on the landscape. As part of the National Gap Analysis Program, we specifically examined physical...
