Journal of Geophysical Research: Earth Surface (2003–2012)

Cover image for Journal of Geophysical Research: Earth Surface (2003–2012)

December 2012

Volume 117, Issue F4

Currently known as: Journal of Geophysical Research: Earth Surface

    1. Calving seismicity from iceberg–sea surface interactions

      T. C. Bartholomaus, C. F. Larsen, S. O'Neel and M. E. West

      Article first published online: 22 DEC 2012 | DOI: 10.1029/2012JF002513

      • image
      • image
      • image
      • image
      • image
      • image
      • image
      • image
      • image
      • image
      • image
      • image

      Key Points

      • Icequakes from calving events dominate the seismic wavefield at Yahtse Glacier
      • Iceberg interactions with the fjord create the largest amplitude icequakes
      • These seismogenic processes may be common at many calving glaciers
    2. Numerical analysis of the effect of momentum ratio on the dynamics and sediment-entrainment capacity of coherent flow structures at a stream confluence

      George Constantinescu, Shinjiro Miyawaki, Bruce Rhoads and Alexander Sukhodolov

      Article first published online: 13 DEC 2012 | DOI: 10.1029/2012JF002452

      • image
      • image
      • image
      • image
      • image
      • image
      • image
      • image
      • image
      • image
      • image
      • image
      • image
      • image
      • image
      • image
      • image
      • image
      • image

      Key Points

      • Streamwise oriented vortical cells act as a pump of momentum and mass
      • Cores of streamwise oriented vortical cells are subject to bimodal oscillations
      • Streamwise oriented vortical cells and mixing interface cells control entrainment
    3. A new approach for simulating the redistribution of soil particles by water erosion: A marker-in-cell model

      James R. Cooper, John Wainwright, Anthony J. Parsons, Yuichi Onda, Tomomi Fukuwara, Eiichiro Obana, Ben Kitchener, Edward J. Long and Graham H. Hargrave

      Article first published online: 6 DEC 2012 | DOI: 10.1029/2012JF002499

      • image
      • image
      • image
      • image
      • image
      • image
      • image
      • image
      • image

      Key Points

      • Developed a new soil-erosion model for hillslopes, a marker-in-cell model
      • Recreates key aspects of hydrology, hydraulics, and spatial distribution of soil
      • Provides a key feedback to our understanding of soil erosion processes
    4. How do vegetation bands form in dry lands? Insights from numerical modeling and field studies in southern Nevada, USA

      Jon D. Pelletier, Stephen B. DeLong, Caitlin A. Orem, Patricio Becerra, Kathleen Compton, Katrina Gressett, John Lyons-Baral, Luke A. McGuire, Jamie L. Molaro and Joshua C. Spinler

      Article first published online: 5 DEC 2012 | DOI: 10.1029/2012JF002465

      • image
      • image
      • image
      • image
      • image
      • image
      • image
      • image
      • image
      • image
      • image

      Key Points

      • Ponded water acts to limit plant growth in the spacing between vegetation bands
      • Vegetation band spacing is controlled by accommodation space for ponded water
      • The relationship between band spacing and slope in S NV supports the model
    5. You have free access to this content
      Correction to “Nature of deformation of sandy bed forms”

      Brandon McElroy and David Mohrig

      Article first published online: 27 NOV 2012 | DOI: 10.1029/2012JF002642

      This article corrects:

      Nature of deformation of sandy bed forms

      Vol. 114, Issue F3, Article first published online: 6 AUG 2009

    6. Mapping gravel bed river bathymetry from space

      C. J. Legleiter and B. T. Overstreet

      Article first published online: 21 NOV 2012 | DOI: 10.1029/2012JF002539

      • image
      • image
      • image
      • image
      • image
      • image
      • image
      • image
      • image
      • image
      • image
      • image
      • image
      • image
      • image
      • image

      Key Points

      • Spectrally-based depth retrieval from satellite images of rivers is feasible
      • Water column optical properties constrain bathymetric precision and range
      • Band ratio algorithm yields reliable depth estimates in clear-flowing streams
    7. Ice flow sensitivity to geothermal heat flux of Pine Island Glacier, Antarctica

      E. Larour, M. Morlighem, H. Seroussi, J. Schiermeier and E. Rignot

      Article first published online: 16 NOV 2012 | DOI: 10.1029/2012JF002371

      • image
      • image
      • image
      • image
      • image
      • image

      Key Points

      • Uncertainty analysis of the forward propagation of geothermal heat flux errors
      • Sensitivity of mass balance to geothermal heat flux errors
      • How do errors in thickness compare to errors in geothermal heat flux
    8. Downstream hydraulic geometry of a tidally influenced river delta

      M. G. Sassi, A. J. F. Hoitink, B. de Brye and E. Deleersnijder

      Article first published online: 14 NOV 2012 | DOI: 10.1029/2012JF002448

      • image
      • image
      • image
      • image
      • image
      • image
      • image
      • image
      • image
      • image
      • image
      • image
      • image

      Key Points

      • Hydraulic geometry concept applied to a mixed river-tide dominated delta
      • River-dominated part of a channel network has a consistent hydraulic geometry
      • Tide-dominated channels impacted by nonlinear river-tide interactions
    9. Modeling wood dynamics, jam formation, and sediment storage in a gravel-bed stream

      B. C. Eaton, M. A. Hassan and S. L. Davidson

      Article first published online: 14 NOV 2012 | DOI: 10.1029/2012JF002385

      • image
      • image
      • image
      • image
      • image
      • image
      • image
      • image
      • image
      • image
      • image
      • image
      • image

      Key Points

      • Our stochastic model predicts wood loads that are consistent with field data
      • We have simulated reasonable LW jam dynamics on the basis of simple physical rules
      • Our model relates wood loads to channel morphology characteristics
    10. A network model for prediction and diagnosis of sediment dynamics at the watershed scale

      Sopan Patil, Murugesu Sivapalan, Marwan A. Hassan, Sheng Ye, Ciaran J. Harman and Xiangyu Xu

      Article first published online: 9 NOV 2012 | DOI: 10.1029/2012JF002400

      • image
      • image
      • image
      • image
      • image
      • image
      • image
      • image
      • image
      • image
      • image
      • image
      • image
      • image
      • image

      Key Points

      • The model characterizes sediment export from hillslope to watershed scale
      • Semi-distributed configuration enables process diagnosis across multiple scales
      • Differences in coarse and fine sediment movement influence export patterns
    11. Southern Weddell Sea shelf edge geomorphology: Implications for gully formation by the overflow of high-salinity water

      J. A. Gales, R. D. Larter, N. C. Mitchell, C.-D. Hillenbrand, S. Østerhus and D. R. Shoosmith

      Article first published online: 9 NOV 2012 | DOI: 10.1029/2012JF002357

      • image
      • image
      • image
      • image
      • image
      • image

      Key Points

      • New data show U-shaped gullies form on the Weddell Sea continental shelf edge
      • Cold, dense water overflow does not deeply incise the Weddell Sea shelf edge
      • Highly incised V-shaped gullies are not formed by cold, dense water overflow
    12. Flow processes near smooth and rough (concave) outer banks in curved open channels

      K. Blanckaert, A. Duarte, Q. Chen and A. J. Schleiss

      Article first published online: 3 NOV 2012 | DOI: 10.1029/2012JF002414

      • image
      • image
      • image
      • image
      • image
      • image
      • image
      • image
      • image
      • image
      • image
      • image
      • image

      Key Points

      • Amplification of outer-bank cell of secondary flow with bank roughness
      • Discussion of morphological relevance of outer-bank cell
      • Presentation of first benchmark data near rough bank for model validation
    13. Drainage subsidence associated with Arctic permafrost degradation

      K. C. Lewis, G. A. Zyvoloski, B. Travis, C. Wilson and J. Rowland

      Article first published online: 2 NOV 2012 | DOI: 10.1029/2011JF002284

      • image
      • image
      • image
      • image
      • image
      • image
      • image
      • image
      • image
      • image
      • image
      • image
      • image
      • image
      • image
      • image

      Key Points

      • A simple 1-D analytic model is useful for the study of Arctic drainage subsidence
      • The analytic model gives key variable combinations characterizing the system
      • Numerical simulations extend the results of the analytic model
    14. The influence of snow cover thickness on the thermal regime of Tête Rousse Glacier (Mont Blanc range, 3200 m a.s.l.): Consequences for outburst flood hazards and glacier response to climate change

      A. Gilbert, C. Vincent, P. Wagnon, E. Thibert and A. Rabatel

      Article first published online: 2 NOV 2012 | DOI: 10.1029/2011JF002258

      • image
      • image
      • image
      • image
      • image
      • image
      • image
      • image
      • image
      • image

      Key Points

      • Relation between snow/firn cover and thermal regime of the glacier
      • Link between thermal regime and outburst flood hazards
      • Thermal impact of climate change on the glacier
    15. Coupled dynamics of the co-evolution of gravel bed topography, flow turbulence and sediment transport in an experimental channel

      Arvind Singh, Efi Foufoula-Georgiou, Fernando Porté-Agel and Peter R. Wilcock

      Article first published online: 27 OCT 2012 | DOI: 10.1029/2011JF002323

      • image
      • image
      • image
      • image
      • image
      • image
      • image
      • image
      • image
      • image
      • image
      • image
      • image
      • image
      • image

      Key Points

      • Asymm. pdfs of bed elevation increments and instant. Reynolds stress parametrized
      • Multiscale structure of gravel bed forms is characterized and parametrized
      • Relationship between sediment transport rates and instant. Reynolds stress is proposed
    16. Wind-formed gravel bed forms, Wright Valley, Antarctica

      John A. Gillies, William G. Nickling, Michael Tilson and Eden Furtak-Cole

      Article first published online: 27 OCT 2012 | DOI: 10.1029/2012JF002378

      • image
      • image
      • image
      • image
      • image
      • image
      • image
      • image
      • image
      • image
      • image
      • image
      • image
      • image
      • image

      Key Points

      • Unique aeolian bed form
      • Form evolution over centuries
      • Highly intermittent process of formation
    17. River profile controls on channel morphology, debris flow disturbance, and the spatial extent of salmonids in steep mountain streams

      Christine L. May and Thomas E. Lisle

      Article first published online: 27 OCT 2012 | DOI: 10.1029/2011JF002324

      • image
      • image
      • image
      • image
      • image
      • image
      • image
      • image
      • image

      Key Points

      • Geomorphic process domains link to the spatial distribution of salmon
      • Steepness and concavity indexes of river profiles are predictors of fish habitat
      • Reach morphology and disturbance potential can be inferred from river profiles
    18. Bedload transport of a bimodal sediment bed

      M. Houssais and E. Lajeunesse

      Article first published online: 25 OCT 2012 | DOI: 10.1029/2012JF002490

      • image
      • image
      • image
      • image
      • image
      • image
      • image
      • image
      • image

      Key Points

      • Bedload laws are similar whether the bed is a uniform or a bimodal mixture
      • Only the critical shear stress is sensitive to the grain sizes distribution
      • The model of Lajeunesse (2010) is generalized to the case of a bimodal mixture
    19. Mechanism of secondary currents in open channel flows

      Shu-Qing Yang, Soon Keat Tan and Xi-Kun Wang

      Article first published online: 19 OCT 2012 | DOI: 10.1029/2012JF002510

      • image
      • image
      • image
      • image
      • image
      • image
      • image
      • image
      • image

      Key Points

      • The mechanism of secondary currents were proposed
    20. Modeling supraglacial water routing and lake filling on the Greenland Ice Sheet

      Alison F. Banwell, Neil S. Arnold, Ian C. Willis, Marco Tedesco and Andreas P. Ahlstrøm

      Article first published online: 18 OCT 2012 | DOI: 10.1029/2012JF002393

      • image
      • image
      • image
      • image
      • image
      • image

      Key Points

      • To link a distributed melt model to a distributed hydrology model
      • To model the filling of a supraglacial lake on the Greenland Ice Sheet
      • To provide distributed inputs for subglacial models in the future
    21. Icequake locations and discrimination of source and path effects with small aperture arrays, Bering Glacier terminus, AK

      Joshua P. Richardson, Gregory P. Waite, Wayne D. Pennington, Roger M. Turpening and James M. Robinson

      Article first published online: 18 OCT 2012 | DOI: 10.1029/2012JF002405

      • image
      • image
      • image
      • image
      • image
      • image
      • image
      • image
      • image
      • image
      • image
      • image
      • image
      • image
      • image
      • image

      Key Points

      • Differentiation of path and source effects for near-terminus icequakes
      • Utility of small-aperture seismic arrays to locate icequakes
      • Differences and similarities between iceberg breakup and calving
    22. Volume and area changes of the Milne Ice Shelf, Ellesmere Island, Nunavut, Canada, since 1950

      Colleen A. Mortimer, Luke Copland and Derek R. Mueller

      Article first published online: 12 OCT 2012 | DOI: 10.1029/2011JF002074

      • image
      • image
      • image
      • image
      • image
      • image

      Key Points

      • Milne Ice Shelf response to twentieth-century warming
      • Thinning as a key contributor to loss of ice shelf mass
      • Ice shelf area and volume contraction
    23. Melting and refreezing beneath Roi Baudouin Ice Shelf (East Antarctica) inferred from radar, GPS, and ice core data

      F. Pattyn, K. Matsuoka, D. Callens, H. Conway, M. Depoorter, D. Docquier, B. Hubbard, D. Samyn and J. L. Tison

      Article first published online: 11 OCT 2012 | DOI: 10.1029/2011JF002154

      • image
      • image
      • image
      • image

      Key Points

      • Multisciplinary approach to understanding ice/ocean interaction
      • Evidence for sub-shelf melting at the grounding line
      • Evidence of marine ice accretion in adjacent areas
    24. Correction to “Macroholes in stalagmites and the search for lost water”

      Nurit Shtober Zisu, Henry P. Schwarcz, Norman Konyer, Tom Chow and Michael D. Noseworthy

      Article first published online: 11 OCT 2012 | DOI: 10.1029/2012JF002619

    25. Distributed ice thickness and volume of all glaciers around the globe

      Matthias Huss and Daniel Farinotti

      Article first published online: 11 OCT 2012 | DOI: 10.1029/2012JF002523

      • image
      • image
      • image
      • image
      • image
      • image
      • image

      Key Points

      • First ice volume assessment of all individual glaciers around the globe
      • Novel methodology to estimate glacier ice thickness distribution
      • Potential sea level rise of 170,000 glaciers and ice caps worldwide is 0.43 m
    26. Spatial and temporal variations in Greenland glacial-earthquake activity, 1993–2010

      Stephen A. Veitch and Meredith Nettles

      Article first published online: 9 OCT 2012 | DOI: 10.1029/2012JF002412

      • image
      • image
      • image
      • image
      • image
      • image
      • image
      • image
      • image

      Key Points

      • Presents source parameters for 121 Greenland glacial earthquakes, 2006-2010
      • Examines spatio-temporal evolution of glacial-earthquake activity from 1993-2010
      • Links glacial earthquakes to changes in glacier dynamics and grounding state
    27. Stochastic determination of entrainment risk in uniformly sized sediment beds at low transport stages: 1. Theory

      Matteo Tregnaghi, Andrea Bottacin-Busolin, Andrea Marion and Simon Tait

      Article first published online: 5 OCT 2012 | DOI: 10.1029/2011JF002134

      • image
      • image
      • image
      • image
      • image
      • image
      • image
      • image
      • image

      Key Points

      • A probabilistically-based framework for grain entrainment is derived
      • The role of near-bed flow-field and bed topography is statistically described
      • Fluid forces and grain resistance are assumed to be conditionally independent
    28. Probabilistic rainfall thresholds for landslide occurrence using a Bayesian approach

      M. Berti, M. L. V. Martina, S. Franceschini, S. Pignone, A. Simoni and M. Pizziolo

      Article first published online: 5 OCT 2012 | DOI: 10.1029/2012JF002367

      • image
      • image
      • image
      • image
      • image
      • image
      • image
      • image
      • image
      • image
      • image
      • image
      • image
      • image

      Key Points

      • A probabilistic approach is needed to evaluate landslide rainfall thresholds
      • Bayes theorem is suited to this purpose
      • Landslide probability is strongly related to the event rainfall
    29. Stochastic determination of entrainment risk in uniformly sized sediment beds at low transport stages: 2. Experiments

      Matteo Tregnaghi, Andrea Bottacin-Busolin, Simon Tait and Andrea Marion

      Article first published online: 5 OCT 2012 | DOI: 10.1029/2011JF002135

      • image
      • image
      • image
      • image
      • image
      • image
      • image
      • image
      • image
      • image

      Key Points

      • Experiments were carried out in a laboratory flume with a 3D PIV system
      • Simultaneous flow-velocity and sediment-motion measurements were made
      • Comparison between grain-scale data and stochastic theories was first performed
    30. Is the von Kármán constant affected by sediment suspension?

      Oscar Castro-Orgaz, Juan V. Giráldez, Luciano Mateos and Subhasish Dey

      Article first published online: 3 OCT 2012 | DOI: 10.1029/2011JF002211

      • image
      • image
      • image
      • image
      • image
      • image
      • image
      • image
      • image

      Key Points

      • Turbulent velocity profile allowing for sediment suspension
      • Variable mixing length depending on sediment concentration
      • Behavior of the von Karman constant in flows with sediment suspensions
    31. Micro-topographic analysis of shell pavements formed by aeolian transport in a wind tunnel simulation

      Cheryl McKenna Neuman, Bailiang Li and David Nash

      Article first published online: 3 OCT 2012 | DOI: 10.1029/2012JF002381

      • image
      • image
      • image
      • image
      • image
      • image
      • image
      • image
      • image
      • image
      • image

      Key Points

      • Beach armouring with shells is an effective control of wind erosion
      • Geospatial analyses are presented to evaluate roughness density
      • Morphodynamics of the intervening bed surface are important to consider
    32. You have free access to this content
      Correction to “The physical basis for anomalous diffusion in bed load transport”

      Raleigh L. Martin, Douglas J. Jerolmack and Rina Schumer

      Article first published online: 2 OCT 2012 | DOI: 10.1029/2012JF002608

      This article corrects:

      The physical basis for anomalous diffusion in bed load transport

      Vol. 117, Issue F1, Article first published online: 23 FEB 2012

    33. Exploring the role of organic matter accumulation on delta evolution

      Jorge Lorenzo-Trueba, Vaughan R. Voller, Chris Paola, Robert R. Twilley and Azure E. Bevington

      Article first published online: 20 JUL 2012 | DOI: 10.1029/2012JF002339

      • image
      • image
      • image
      • image
      • image
      • image
      • image
      • image
      • image
      • image

      Key Points

      • First land building model coupling physical and biogeochemical processes
      • A quantitative prediction of field observed patterns of organic fraction
      • Demonstration of the role of fresh water supply in delta dynamics

SEARCH

SEARCH BY CITATION