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Journal of Geophysical Research: Oceans

Cover image for Vol. 118 Issue 5

May 2013

Volume 118, Issue 5

Pages 2267–2760

  1. Regular Articles

    1. Top of page
    2. Regular Articles
    1. You have free access to this content
      Spatio-temporal distribution, along-channel transport, and post-riverflood recovery of salinity in the Guadalquivir estuary (SW Spain) (pages 2267–2278)

      M. Díez-Minguito, E. Contreras, M. J. Polo and M. A. Losada

      Version of Record online: 3 MAY 2013 | DOI: 10.1002/jgrc.20172

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      Key Points

      • The mixing mechanisms which account for the 98% salt transport were identified
      • Regimes of salinity intrusion vs. river flow were characterized
      • Distributions of the unsteady efective dispersion coefficient were computed
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      Two modes of sea-ice gravity drainage: A parameterization for large-scale modeling (pages 2279–2294)

      Adrian K. Turner, Elizabeth C. Hunke and Cecilia M. Bitz

      Version of Record online: 7 MAY 2013 | DOI: 10.1002/jgrc.20171

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      Key Points

      • We implement a 1D gravity drainage parameterization in the sea ice model CICE
      • Gravity drainage observations show fast and slow desalination modes
      • The parameterization is designed to represent each of these modes
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      Structure and surface properties of eddies in the southeast Pacific Ocean (pages 2295–2309)

      James Holte, Fiamma Straneo, Carlos Moffat, Robert Weller and J. Thomas Farrar

      Version of Record online: 7 MAY 2013 | DOI: 10.1002/jgrc.20175

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      Key Points

      • Evidence of eddy trapping in cyclones and anticyclones in SEP
      • In SEP, cyclones have cool SSTs, anticyclones warm SSTs
      • Eddy heat flux divergence is small in SEP
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      Relationships between inherent optical properties and the depth of penetration of solar radiation in optically complex coastal waters (pages 2310–2317)

      Alex Cunningham, Leanne Ramage and David McKee

      Version of Record online: 7 MAY 2013 | DOI: 10.1002/jgrc.20182

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      Key Points

      • Diffuse attenuation coefficient models assessed using in situ measurements
      • Euphotic depths linked to inherent optical properties
      • Predictive equations derived
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      Spatial distribution of brominated very short-lived substances in the eastern Pacific (pages 2318–2328)

      Yina Liu, Shari A. Yvon-Lewis, Daniel C. O. Thornton, Lisa Campbell and Thomas S. Bianchi

      Version of Record online: 7 MAY 2013 | DOI: 10.1002/jgrc.20183

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      Key Points

      • BrVSLS maxima were observed near the subsurface chlorophyll a maxima.
      • BrVSLS production is in general related to ocean photosynthetic biomass.
      • CHBr3 and CH2Br2 production is controlled by different biogeochemical factors.
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      Seismic reflection imaging of shallow oceanographic structures (pages 2329–2344)

      Helen Piété, Louis Marié, Bruno Marsset, Yannick Thomas and Marc-André Gutscher

      Version of Record online: 8 MAY 2013 | DOI: 10.1002/jgrc.20156

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      Key Points

      • Seismic reflection imaging of the seasonal shallow thermocline
      • Seismic setup design and sea trial
      • High lateral resolution image of internal waves
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      A comparison of methods to determine phytoplankton bloom initiation (pages 2345–2357)

      Sarah R. Brody, M. Susan Lozier and John P. Dunne

      Version of Record online: 8 MAY 2013 | DOI: 10.1002/jgrc.20167

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      Key Points

      • Different methods of calculating bloom start dates produced different results.
      • Each method identified the bloom as a different part of the chlorophyll cycle.
      • The onset of positive heat fluxes coincides with the phytoplankton bloom.
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      Variations in the Pacific Decadal Oscillation since 1853 in a coral record from the northern South China Sea (pages 2358–2366)

      Wenfeng Deng, Gangjian Wei, Luhua Xie, Ting Ke, Zhibing Wang, Ti Zeng and Ying Liu

      Version of Record online: 9 MAY 2013 | DOI: 10.1002/jgrc.20180

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      Key Points

      • PDO activity since 1853 was recorded by a coral from the northern SCS
      • Coral profiles were affected by PDO on decadal-interdecadal time scales
      • Annual resolution coral proxy is capable to study long term climate variability
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      Observed near-surface flows under all tropical cyclone intensity levels using drifters in the northwestern Pacific (pages 2367–2377)

      Yu-Chia Chang, Guan-Yu Chen, Ruo-Shan Tseng, Luca R. Centurioni and Peter C. Chu

      Version of Record online: 9 MAY 2013 | DOI: 10.1002/jgrc.20187

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      Key Points

      • The characterization of velocity to all storms is provided.
      • The study roughly agrees with Geisler's theory.
      • Our observations verify earlier modeling results of Price [1983].
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      Toward representing wave-induced sediment suspension over sand ripples in RANS models (pages 2378–2392)

      Laurent O. Amoudry, Paul S. Bell, Peter D. Thorne and Alejandro J. Souza

      Version of Record online: 9 MAY 2013 | DOI: 10.1002/jgrc.20188

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      Key Points

      • We numerically investigate near-bed sediment mixing
      • Modified near-bed diffusivity results in good predictions above steep ripples
      • Turbulence spectral dynamics are modified above steep ripples.
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      Quantifying the length-scale dependence of surf zone advection (pages 2393–2407)

      Greg W. Wilson, H. Tuba Özkan-Haller and Robert A. Holman

      Version of Record online: 9 MAY 2013 | DOI: 10.1002/jgrc.20190

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      Key Points

      • Advection causes scale dependent changes to surf zone current variability
      • Nondimensional parameter introduced to quantify scale dependence of advection
      • Advection can mask alongshore nonuniformity in surf zone dynamics
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      Arctic sea ice circulation and drift speed: Decadal trends and ocean currents (pages 2408–2425)

      R. Kwok, G. Spreen and S. Pang

      Version of Record online: 9 MAY 2013 | DOI: 10.1002/jgrc.20191

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      Key Points

      • Changes in connection to winds, multiyear ice , export and thinning.
      • Strengthening of the Beaufort Gyre and the Transpolar Drift.
      • Positive trends in drift speed are associated with decline in multiyear sea ice.
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      Temperature inversions and their influence on the mixed layer heat budget during the winters of 2006–2007 and 2007–2008 in the Bay of Bengal (pages 2426–2437)

      M. S. Girishkumar, M. Ravichandran and M. J. McPhaden

      Version of Record online: 9 MAY 2013 | DOI: 10.1002/jgrc.20192

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      Key Points

      • BL and TI influence on mixed layer heat budget in the BoB
      • Role of remote forcing on modulation of BL and TI.
      • Contribution of subsurface process on interannual SST variability in the BoB.
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      Sea ice thickness estimations from ICESat Altimetry over the Bellingshausen and Amundsen Seas, 2003–2009 (pages 2438–2453)

      Hongjie Xie, Ahmet Emre Tekeli, Stephen F. Ackley, Donghui Yi and H. Jay Zwally

      Version of Record online: 10 MAY 2013 | DOI: 10.1002/jgrc.20179

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      Key Points

      • Evaluation of two different methods for estimating ice thickness from ICESat
      • Empirical equation is preferable than the buoyancy equation for the region
      • AMSR-E snow depth counting for 95% ice thickness overestimation
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      Modeling Antarctic ice shelf responses to future climate changes and impacts on the ocean (pages 2454–2475)

      Kazuya Kusahara and Hiroyasu Hasumi

      Version of Record online: 14 MAY 2013 | DOI: 10.1002/jgrc.20166

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      Key Points

      • Basal melting of all Antarctic ice shelves is investigated by a numerical model.
      • Response of the basal melting to possible future climate changes is examined.
      • Impact of the basal melt water on the ocean is also examined.
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      Evaluation of model nesting performance on the Texas-Louisiana continental shelf (pages 2476–2491)

      Martinho Marta-Almeida, Robert D. Hetland and Xiaoqian Zhang

      Version of Record online: 15 MAY 2013 | DOI: 10.1002/jgrc.20163

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      Key Points

      • Nested model of the Texas-Louisiana shelf
      • Evaluation of different parent models nesting with model skill
      • Instabilities along the Mississippi/Atchafalaya plume front
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      Seasonal variability of submarine melt rate and circulation in an East Greenland fjord (pages 2492–2506)

      R. Sciascia, F. Straneo, C. Cenedese and P. Heimbach

      Version of Record online: 17 MAY 2013 | DOI: 10.1002/jgrc.20142

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      Key Points

      • Fjord dynamic and submarine melting are strongly influenced by seasonality
      • Our findings are consistent with observations and with simplified plume models
      • To represent the dynamic care must be taken when choosing model parameters
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      Dense water formation around islands (pages 2507–2519)

      Michael A. Spall

      Version of Record online: 17 MAY 2013 | DOI: 10.1002/jgrc.20185

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      Key Points

      • Reynolds stress divergences balance dense water formation around an island
      • The properties of dense water formed can be predicted from simple theory
      • Dense water formation around an island is different from that in marginal seas
    19. You have full text access to this OnlineOpen article
      Modeling how surface nitrogen fixation influences subsurface nutrient patterns in the North Atlantic (pages 2520–2534)

      Chisato Yoshikawa, Victoria J. Coles, Raleigh R. Hood, Douglas G. Capone and Naohiro Yoshida

      Version of Record online: 20 MAY 2013 | DOI: 10.1002/jgrc.20165

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      Key Points

      • Nitrogen fixation creates high N* anomalies
      • Horizontal advection influences nutrient patterns
      • Preferential phosphorus remineralization influences nutrient patterns
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      Annual maximum water levels from tide gauges: Contributing factors and geographic patterns (pages 2535–2546)

      Mark A. Merrifield, Ayesha S. Genz, Christopher P. Kontoes and John J. Marra

      Version of Record online: 20 MAY 2013 | DOI: 10.1002/jgrc.20173

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      Key Points

      • Mean annual maximum water levels can be specified on a global scale
      • Tidal and non-tidal contributions to annual maximum water levels are quantified
    21. You have full text access to this OnlineOpen article
      Southern Ocean nutrient trapping and the efficiency of the biological pump (pages 2547–2564)

      François W. Primeau, Mark Holzer and Timothy DeVries

      Version of Record online: 21 MAY 2013 | DOI: 10.1002/jgrc.20181

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      Key Points

      • A data-assimilated model quantifies export production and regenerated PO4 pool
      • The S. Ocean contributes 75% of the preformed and 20% of the regenerated PO4
      • Southern Ocean nutrient drawdown traps nutrients in circumpolar deep waters
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      Changes in the onset and intensity of wind-driven upwelling and downwelling along the North American Pacific coast (pages 2565–2580)

      Brian Bylhouwer, Debby Ianson and Karen Kohfeld

      Version of Record online: 22 MAY 2013 | DOI: 10.1002/jgrc.20194

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      Key Points

      • Onset and duration of up and downwelling can be determined from local winds
      • Temporal trends in onset and intensity of upwelling depend on time series length
      • Season onset, duration and intensity is highly variable in northern CCS
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      Acoustic scattering from a suspension of flocculated sediments (pages 2581–2594)

      Iain T. MacDonald, Christopher E. Vincent, Peter D. Thorne and Benjamin D. Moate

      Version of Record online: 22 MAY 2013 | DOI: 10.1002/jgrc.20197

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      Key Points

      • scattering characteristics of flocculated particles
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      cBathy: A robust algorithm for estimating nearshore bathymetry (pages 2595–2609)

      Rob Holman, Nathaniel Plant and Todd Holland

      Version of Record online: 22 MAY 2013 | DOI: 10.1002/jgrc.20199

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      Key Points

      • Robust bathymetry estimates can be made from optical data
      • Kalman filtering is required to defeat inevitable noise.
      • Confidence limits and support variables are available for downstream analysis.
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      Temporal changes and impacts of submarine fresh groundwater discharge to the coastal environment: A decadal case study in Toyama Bay, Japan (pages 2610–2622)

      Mariko Hatta and Jing Zhang

      Version of Record online: 28 MAY 2013 | DOI: 10.1002/jgrc.20184

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      Key Points

      • Estimate Submarine Fresh Groundwater discharge in the bay
      • Impact of freshwater discharge to the coastal area
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      Role of asymmetric tidal mixing in the subtidal dynamics of narrow estuaries (pages 2623–2639)

      Peng Cheng, Huib E. de Swart and Arnoldo Valle-Levinson

      Version of Record online: 29 MAY 2013 | DOI: 10.1002/jgrc.20189

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      Key Points

      • The vertical distribution of ATM-induced flow is influenced by stratification.
      • The magnitude of ATM-induced flow is related to asymmetries in tidal mixing.
      • Tidal-asymmetry-induced flow dominates in periodically stratified estuaries.
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      Simulated heat flux and sea ice production at coastal polynyas in the southwestern Weddell Sea (pages 2640–2652)

      V. Haid and R. Timmermann

      Version of Record online: 30 MAY 2013 | DOI: 10.1002/jgrc.20133

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      Key Points

      • Wintertime southwestern Weddell Sea coastal polynya area and activity
      • Simulation of wintertime coastal polynya heat flux and ice production
      • Contribution of the oceanic heat flux at coastal polynyas
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      Cold core eddies and fronts of the Antarctic Circumpolar Current south of New Zealand from in situ and satellite data (pages 2653–2666)

      Yuri Cotroneo, Giorgio Budillon, Giannetta Fusco and Giancarlo Spezie

      Version of Record online: 30 MAY 2013 | DOI: 10.1002/jgrc.20193

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      Key Points

      • Position of ACC fronts from XBT data are compared to altimetry-derived locations
      • Mesoscale eddies are described and their main characteristics are analysed
      • Spawning of eddies occurs at the PF and contributes to the global heat budget
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      Numerical simulations of oceanic pCO2 variations and interactions between Typhoon Choi-wan (0914) and the ocean (pages 2667–2684)

      Akiyoshi Wada, Meghan F. Cronin, Adrienne J. Sutton, Yoshimi Kawai and Masao Ishii

      Version of Record online: 30 MAY 2013 | DOI: 10.1002/jgrc.20203

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      Key Points

      • This study developes an atmosphere-wave-ocean-carbon coupled model.
      • The numerical results for Choi-wan are validated using in situ observations.
      • Ocean waves affect surface wind and the ocean response to Choi-wan.
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      Impact of current-wave interaction on storm surge simulation: A case study for Hurricane Bob (pages 2685–2701)

      Yunfang Sun, Changsheng Chen, Robert C. Beardsley, Qichun Xu, Jianhua Qi and Huichan Lin

      Version of Record online: 30 MAY 2013 | DOI: 10.1002/jgrc.20207

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      Key Points

      • FVCOM hindcast of Hurricane Bob
      • Roles of ocean stratification in ocean response to Hurricane Bob
      • Roles of wave current interaction in ocean response to Hurricane Bob
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      A numerical investigation of the dynamics and structure of hyperpycnal river plumes on sloping continental shelves (pages 2702–2718)

      Shih-Nan Chen, W. Rockwell Geyer and Tian-Jian Hsu

      Version of Record online: 30 MAY 2013 | DOI: 10.1002/jgrc.20209

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      Key Points

      • 3D process-based modeling study on the hyperpycnal plume dynamics
      • criteria discerning autosupending and depositional plume regime are determined
      • plume's momentum budgets and characteristic length scales are quantified
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      Lateral diffusivity from tracer release experiments in the tropical North Atlantic thermocline (pages 2719–2733)

      Donata Banyte, Martin Visbeck, Toste Tanhua, Tim Fischer, Gerd Krahmann and Johannes Karstensen

      Version of Record online: 30 MAY 2013 | DOI: 10.1002/jgrc.20211

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      Key Points

      • Meridional eddy diffusivity is found to be about 500 m2/s
      • Zonal eddy diffusivity is found to be about 1200 m2/s
      • Optimal tracer patch sampling strategies are reviewed
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      Traditional quasi-geostrophic modes and surface quasi-geostrophic solutions in the Southwestern Atlantic (pages 2734–2745)

      Cesar B. Rocha, Amit Tandon, Ilson C. A. da Silveira and Jose Antonio M. Lima

      Version of Record online: 30 MAY 2013 | DOI: 10.1002/jgrc.20214

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      Key Points

      • Some regions present a sharp near-surface vertical decay in velocity profiles
      • SQG solutions are consistent with the observed sharp near-surface vertical decay
      • SQG solutions converge to a 4 QG mode representation
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      Particle filter-based data assimilation for a three-dimensional biological ocean model and satellite observations (pages 2746–2760)

      Jann Paul Mattern, Michael Dowd and Katja Fennel

      Version of Record online: 30 MAY 2013 | DOI: 10.1002/jgrc.20213

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      Key Points

      • Particle filter data assimilation for 3D biological ocean model, satellite data
      • Modifications to particle filter to work with outliers, high-dimensional model
      • Found improved performance of particle filter in comparison to optimized model

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