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Courses
- TBLThe Beauty of Landscapes
- NPAWTEGPNational Parks: A Window Through Earth's Geological Processes
- GLEGeomorphology and Landscape Evolution
- ANMGAnalytical and Numerical Modeling in Geosciences
- FSGField Studies in Geomorphology
- GGeomorphology
- GDSGeological Disasters and Society
- ESPEarth Surface Processes
Grants
- Monitoring And Assessment Of Closure Design Performance at BHP sites
Principal Investigator (PI)
2018
$1.2M
Active - Channel and Landscape Evolution as a Function of Spatial Scale in Semiarid Watersheds
Principal Investigator (PI)
2017
$130.0K
- Characterizing Global Sand Flux for Martian Bedform Construction Times and Erosion Rates
Co-Investigator (COI)
2015
$298.4K
- Quantifying Turbulent Shear Stress in "Real" Landscapes
Principal Investigator (PI)
2014
$50.0K
- UAZDS-417 Hydrological Impacts of Fires Fueled by Invasive Buffelgrass
Principal Investigator (PI)
2014
$33.1K
- Wind Over Rock: Quantifying the Feedbacks Among Wind Flow, Bedrock Erosion and Tectonic Uplift
Principal Investigator (PI)
2013
$328.6K
- Development of a High-Resolution Global Soil Depth Dataset
Principal Investigator (PI)
2013
$249.2K
- A workshop to assess and advance the prediction of land-surface response to climate and land use changes
Principal Investigator (PI)
2013
$29.9K
- Collaborative Research: WILSIM2, The Next Generation Landform Simulator
Principal Investigator (PI)
2012
$30.4K
- Collaborative Project: Development of Hybrid 3-D Hydrological Modeling for the NCAR Community Earth System Model (CESM)
Co-Investigator (COI)
2011
$761.7K
News
- Post-Wildfire Erosion Can Sculpt Forested Mountains
2016
- How Wind Sculpted the Earth’s Largest Dust Deposit
2015
- Video Highlights UA-Led Research on Human Evolution, Climate
2015
- UA Geoscientist Receives $4.78M to Study Links Between Human Evolution, Past Climate
2013
- Wind Can Keep Mountains From Growing
2011
- GeoDaze 2009 Features UA Student Research in the Earth Sciences
2009
- How Martian Winds Make Rocks Walk
2009
- UA Awarded $4.35M to Study Earth's Critical Zone
2009
- UA Team Evaluating Relationship Between Roadways, Restoration
2009
- Liquid Water Found Flowing on Mars? Not Yet
2008
- Biosphere 2 Hosts Fall Lecture Series
2008
- Predicting Where Flooding Will Occur in the West
2005
- Growth Secrets of Alaska's Mysterious Field of Lakes
2005
- Martian Mystery Explained
2004
Publications (165)
- How Hack distributions of rill networks contribute to nonlinear slope length--soil loss relationships
2020
- Controls on the hydraulic geometry of alluvial channels: bank stability to gravitational failure, the critical-flow hypothesis, and conservation of mass and energy
2020
- Resolving deep critical zone architecture in complex volcanic terrain
2020
- The Community Land Model version 5: Description of new features, benchmarking, and impact of forcing uncertainty
2019
- Hillslope hydrology in global change research and Earth system modeling
2019
- Earth surface modeling for education: How effective is it? Four semesters of classroom tests with WILSIM-GC
2019
- Controlled experiments of hillslope coevolution at the Biosphere 2 Landscape Evolution Observatory: Toward prediction of coupled hydrological, biogeochemical, and ecological change
2018
- A net ecosystem carbon budget for snow dominated forested headwater catchments: linking water and carbon fluxes to critical zone carbon storage
2018
- Why Do Large‐Scale Land Surface Models Produce a Low Ratio of Transpiration to Evapotranspiration?
2018
- Which way do you lean? Using slope aspect variations to understand Critical Zone processes and feedbacks
2018
- Why do large-scale land surface models produce a low ratio of transpiration to evapotranspiration?
2018
- Controls on yardang development and morphology: 2. Numerical modeling
2018
- Signatures of obliquity and eccentricity in soil chronosequences
2018
- Controls on yardang development and morphology: 1. Field observations and measurements at Ocotillo Wells, California
2018
- A probabilistic approach to quantifying soil property change through time integration of energy and mass input
2017
- The Hominin Sites and Paleolakes Drilling Project: High-resolution paleoclimate records from the East African Rift System and their implications for understanding the environmental context of hominin evolution
2017
- A probabilistic approach to quantifying soil physical properties via time-integrated energy and mass input
2017
- Asymmetry of weathering-limited hillslopes: the importance of diurnal covariation in solar insolation and temperature
2017
- Coevolution of soil and topography across a semiarid cinder cone chronosequence
2017
- Geochemical evolution of the Critical Zone across variable time scales informs concentration-discharge relationships: Jemez River Basin Critical Zone Observatory
2017
- The Hominin Sites and Paleolakes Drilling Project: Acquiring High-Resolution Paleoclimate Records from the East African Rift System and Their Implications for Understanding the Environmental Context of Hominin Evolution
2017
- Quantifying the controls on potential soil production rates: a case study of the San Gabriel Mountains, California
2017
- Quantifying geomorphic change at ephemeral stream restoration sites using a coupled-model approach
2017
- CO2 diffusion into pore spaces limits weathering rate of an experimental basalt landscape
2017
- Topographic correlations with soil and regolith thickness from shallow-seismic refraction constraints across upland hillslopes in the Valles Caldera, New Mexico
2016
- A gridded global data set of soil, intact regolith, and sedimentary deposit thicknesses for regional and global land surface modeling
2016
- Understanding ecosystem services from a geosciences perspective
2016
- Advantages of computer simulation in enhancing students' learning about landform evolution: A case study using the grand canyon
2016
- Colloids and organic matter complexation control trace metal concentration-discharge relationships in Marshall Gulch stream waters
2016
- Constraining frequency--magnitude--area relationships for rainfall and flood discharges using radar-derived precipitation estimates: example applications in the Upper and Lower Colorado River basins, USA
2016
- Implementing and evaluating variable soil thickness in the Community Land Model, version 4.5 (CLM4. 5)
2016
- The predominance of post-wildfire erosion in the long-term denudation of the Valles Caldera, New Mexico
2016
- The influence of Holocene vegetation changes on topography and erosion rates: A case study at Walnut Gulch Experimental Watershed, Arizona
2016
- Self-affinity and surface-area-dependent fluctuations of lake-level time series
2015
- A gridded global data set of soil, immobile regolith, and sedimentary deposit thicknesses for regional and global land surface modeling
2015
- Geomorphic imprints of repeated tsunami waves in a coastal valley in northeastern Japan
2015
- Dynamics of sediment storage and release on aeolian dune slip faces: A field study in Jericoacoara, Brazil
2015
- Critical zone services: Expanding context, constraints, and curency beyond ecosystem services.
2015
- Forecasting the response of Earth's surface to future climatic and land use changes: A review of methods and research needs
2015
- Controls on the large-scale spatial variations of dune field properties in the barchanoid portion of White Sands dune field, New Mexico
2015
- Predicting the roughness length of turbulent flows over landscapes with multi-scale microtopography
2015
- Laser vision: lidar as a transformative tool to advance critical zone science
2015
- Controls on valley spacing in landscapes subject to rapid base-level fall
2015
- Quantifying the time scale of elevated geomorphic response following wildfires using multi-temporal LiDAR data: An example from the Las Conchas fire, Jemez Mountains, New Mexico
2015
- Decadal-scale soil redistribution along hillslopes in the Mojave Desert
2015
- A hybrid-3D hillslope hydrological model for use in E arth system models
2015
- Constraining frequency-magnitude-area relationships for precipitation and flood discharges using radar-derived precipitation estimates: example applications in the Upper and Lower Colorado River Basins, USA.
2015
- The Landscape Evolution Observatory: A large-scale controllable infrastructure to study coupled Earth-surface processes
2015
- Quantifying topographic and vegetation effects on the transfer of energy and mass to the critical zone
2015
- An effective hyper-resolution pseudo-3D implementation of small scale hydrological features to improve regional and global climate studies
2014
- Multiscale bed form interactions and their implications for the abruptness and stability of the downwind dune field margin at White Sands, New Mexico, USA
2014
- FROM DUST TO DUST: QUATERNARY WIND EROSION OF THE MU US DESERT AND LOESS PLATEAU, CHINA
2014
- Controls on slope-wash erosion rates in the Mojave Desert
2014
- Martian Polar Stratigraphy from Stereo Topography
2014
- Critical Zone Services: Expanding Context, Constraints, and Currency beyond Ecosystem Services
2014
- The linkages among hillslope-vegetation changes, elevation, and the timing of late-Quaternary fluvial-system aggradation in the Mojave Desert revisited
2014
- Polar Stratigraphy from HiRISE Stereo Topography
2014
- Hillslope-scale experiment demonstrates the role of convergence during two-step saturation
2014
- Development of topographic asymmetry: Insights from dated cinder cones in the western United States
2014
- Simulating foreland basin response to mountain belt kinematics and climate change in the Eastern Cordillera and Subandes: An analysis of the Chaco foreland basin in southern Bolivia
2014
- An integrated modelling framework of catchment-scale ecohydrological processes: 2. The role of water subsidy by overland flow on vegetation dynamics in a semi-arid catchment
2014
- Incipient subsurface heterogeneity and its effect on overland flow generation--insight from a modeling study of the first experiment at the Biosphere 2 Landscape Evolution Observatory
2014
- Rare earth elements as reactive tracers of biogeochemical weathering in forested rhyolitic terrain
2014
- Controls on the geometry of potholes in bedrock channels
2014
- How do sediment yields from post-wildfire debris-laden flows depend on terrain slope, soil burn severity class, and drainage basin area? Insights from airborne-LiDAR change detection
2014
- Assessing Ability to Forecast Geomorphic System Responses to Climate and Land-Use Changes
2014
- Controls on the spacing and geometry of rill networks on hillslopes: Rain splash detachment, initial hillslope roughness, and the competition between fluvial and colluvial transport
2013
- Relationships between debris fan morphology and flow rheology for wet and dry flows on Earth and Mars: A numerical modeling investigation
2013
- Cosmogenic sup 3 /sup He age estimates of Plio-Pleistocene alluvial-fan surfaces in the Lower Colorado River Corridor, Arizona, USA
2013
- Coevolution of nonlinear trends in vegetation, soils, and topography with elevation and slope aspect: A case study in the sky islands of southern Arizona
2013
- A robust, two-parameter method for the extraction of drainage networks from high-resolution digital elevation models (DEMs): Evaluation using synthetic and real-world DEMs
2013
- Autogenic cycles of channelized fluvial and sheet flow and their potential role in driving long-runout gravel progradation in sedimentary basins
2013
- Predicting the thickness and aeolian fraction of soils in upland watersheds of the Mojave Desert
2013
- Deviations from self-similarity in barchan form and flux: The case of the Salton Sea dunes, California
2013
- A spatially distributed model for the long-term suspended sediment discharge and delivery ratio of drainage basins
2012
- How do vegetation bands form in dry lands? Insights from numerical modeling and field studies in southern Nevada, USA
2012
- Analytic solution for the morphology of a soil-mantled valley undergoing steady headward growth: Validation using case studies in southeastern Arizona
2012
- Fluvial and slope-wash erosion of soil-mantled landscapes: detachment-or transport-limited?
2012
- Wind erosion in the Qaidam basin, central Asia: implications for tectonics, paleoclimate, and the source of the Loess Plateau
2011
- How water, carbon, and energy drive critical zone evolution: the Jemez-Santa Catalina Critical Zone Observatory
2011
- Calibration and testing of upland hillslope evolution models in a dated landscape: Banco Bonito, New Mexico
2011
- Late Holocene alluvial history of the Cuyama River, California, USA
2011
- An open system framework for integrating critical zone structure and function
2011
- Widespread hillslope gullying on the southeastern Tibetan Plateau: Human or climate-change induced?
2011
- The role of weathering in the formation of bedrock valleys on Earth and Mars: A numerical modeling investigation
2011
- Investigating gully flow emplacement mechanisms using apex slopes
2010
- How do pediments form?: A numerical modeling investigation with comparison to pediments in southern Arizona, USA
2010
- Numerical modeling of the late Cenozoic geomorphic evolution of Grand Canyon, Arizona
2010
- Modeling the formation of bright slope deposits associated with gullies in Hale Crater, Mars: Implications for recent liquid water
2010
- Controls of glacial valley spacing on earth and mars
2010
- Erratum to Controls of glacial valley spacing on Earth and Mars (Geomorphology 116 (2010) 189-201) (DOI:10.1016/j.geomorph.2009.10.018)
2010
- Relationships among climate, erosion, topography, and delamination in the Andes: A numerical modeling investigation
2010
- Minimizing the grid-resolution dependence of flow-routing algorithms for geomorphic applications
2010
- The effects of interdune vegetation changes on eolian dune field evolution: a numerical-modeling case study at Jockey's Ridge, North Carolina, USA
2009
- Quantifying the climatic and tectonic controls on hillslope steepness and erosion rate
2009
- An analysis of sinuous ridges in the southern Argyre Planitia, Mars using HiRISE and CTX images and MOLA data
2009
- Geomorphically based predictive mapping of soil thickness in upland watersheds
2009
- Wind-driven reorganization of coarse clasts on the surface of Mars
2009
- The hills are alive: Earth science in a controlled environment
2009
- Welcome to Lithosphere
2009
- Controls on the height and spacing of eolian ripples and transverse dunes: A numerical modeling investigation
2009
- Tectonic and structural control of fluvial channel morphology in metamorphic core complexes: The example of the Catalina-Rincon core complex, Arizona
2009
- The impact of snowmelt on the late Cenozoic landscape of the southern Rocky Mountains, USA
2009
- Geomorphology, complexity, and the emerging science of the Earth's surface
2009
- High Resolution Imaging Science Experiment (HiRISE) observations of glacial and periglacial morphologies in the circum-Argyre Planitia highlands, Mars
2008
- Crack propagation by differential insolation on desert surface clasts
2008
- Forward modeling of ice topography on Mars to infer basal shear stress conditions
2008
- Glacial erosion and mountain building
2008
- Evaluating suitability of a tephra dispersal model as part of a risk assessment framework
2008
- Quantitative modeling of earth surface processes
2008
- Recent bright gully deposits on Mars: Wet or dry flow?
2008
- Infiltration on alluvial fans in arid environments: Influence of fan morphology
2008
- Climate change triggered sedimentation and progressive tectonic uplift in a coupled piedmont--axial system: Cuyama Valley, California, USA
2008
- Dispersion of channel-sediment contaminants in distributary fluvial systems: Application to fluvial tephra and radionuclide redistribution following a potential volcanic eruption at Yucca Mountain
2008
- Desert pavement dynamics: numerical modeling and field-based calibration
2007
- Nonlinear slope-dependent sediment transport in cinder cone evolution
2007
- Relief threshold for eolian sand transport on alluvial fans
2007
- Erosion-rate determination from foreland basin geometry
2007
- Fractal behavior in space and time in a simplified model of fluvial landform evolution
2007
- Bedrock landscape development modeling: Calibration using field study, geochronology, and digital elevation model analysis
2007
- Cantor set model of eolian dust deposits on desert alluvial fan terraces
2007
- Numerical modeling of the Cenozoic geomorphic evolution of the southern Sierra Nevada, California
2007
- Evolution of the Bonneville shoreline scarp in west-central Utah: Comparison of scarp-analysis methods and implications for the diffusion model of hillslope evolution
2006
- Reply to comment by Kenneth Hinkel on Formation of oriented thaw lakes by thaw slumping
2006
- Latitudinal variation of denudation in the evolution of the Bolivian Andes
2006
- Sensitivity of playa windblown-dust emissions to climatic and anthropogenic change
2006
- Eocene to recent variations in erosion across the central Andean fold-thrust belt, northern Bolivia: Implications for plateau evolution
2006
- Formation of oriented thaw lakes by thaw slumping
2005
- Linking the scales of observation, process, and modeling of dust emissions
2005
- Deposition of playa windblown dust over geologic time scales
2005
- An integrated approach to flood hazard assessment on alluvial fans using numerical modeling, field mapping, and remote sensing
2005
- Mountains, monsoons, and megafans
2005
- Geomorphic control of radionuclide diffusion in desert soils
2005
- Correlation and dating of Quaternary alluvial-fan surfaces using scarp diffusion
2004
- Persistent drainage migration in a numerical landscape evolution model
2004
- Estimate of three-dimensional flexural-isostatic response to unloading: Rock uplift due to late Cenozoic glacial erosion in the western United States
2004
- The influence of piedmont deposition on the time scale of mountain-belt denudation
2004
- How do spiral troughs form on Mars?
2004
- Oscillations in arid alluvial-channel geometry
2004
- Coherence resonance and ice ages
2003
- Drainage basin evolution in the Rainfall Erosion Facility: dependence on initial conditions
2003
- Natural variability of atmospheric temperatures and geomagnetic intensity over a wide range of time scales
2002
- Spring-block models of seismicity: Review and analysis of a structurally heterogeneous model coupled to a viscous asthenosphere
2000
- Shapes of river networks and leaves: are they statistically similar?
2000
- Model assessments of the optimal design of nature reserves for maximizing species longevity
2000
- Are large complex ecosystems more unstable? A theoretical reassessment with predator switching
2000
- Statistical self-similarity of magmatism and volcanism
1999
- Species-Area Relation and Self-Similarity in a Biogeographical Model of Speciation and Extinction
1999
- Self-organization and scaling relationships of evolving river networks
1999
- Application of a Stochastic Deposition and Erosion Model to Reservoir Heterogeneity and Stratigraphic Data
1999
- Preface
1999
- Self-Affine Time Series: II. Applications and Models
1999
- Paleointensity variations of Earth's magnetic field and their relationship with polarity reversals
1999
- Networks with side branching in biology
1998
- The power spectral density of atmospheric temperature from time scales of 10- 2 to 106 yr
1998
- The power spectral density of atmospheric temperature from time scales of 10 sup -2 /sup to 10 sup 6 /sup yr
1998
- Kardar-Parisi-Zhang scaling of the height of the convective boundary layer and fractal structure of cumulus cloud fields
1997
- Synthetic stratigraphy with a stochastic diffusion model of fluvial sedimentation
1997
- Long-range persistence in climatological and hydrological time series: analysis, modeling and application to drought hazard assessment
1997
- Scale-invariance of soil moisture variability and its implications for the frequency-size distribution of landslides
1997
- Fractal models in Geology
1997
- Analysis and modeling of the natural variability of climate
1997
- Variations in solar luminosity from timescales of minutes to months
1996
- Scale-invariant topography and porosity variations in fluvial sedimentary basins
1996
- Molecular dynamics simulations of low-energy cluster deposition on metallic targets
1992