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<oai_dc:dc xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/oai_dc/ http://www.openarchives.org/OAI/2.0/oai_dc.xsd">
  <dc:contributor>Joseph W. Long</dc:contributor>
  <dc:contributor>Robert L. Jenkins III</dc:contributor>
  <dc:contributor>David M. Thompson</dc:contributor>
  <dc:creator>Davina Passeri</dc:creator>
  <dc:date>2018</dc:date>
  <dc:description>&lt;p&gt;A Delft3D model was developed to evaluate the potential effects of proposed navigation&lt;br&gt;channel deepening and widening in Mobile Harbor, Alabama. The model performance was&lt;br&gt;assessed through comparisons of modeled and observed data of water levels, velocities, and bed&lt;br&gt;level changes; the model captured hydrodynamic and sediment transport patterns in the study&lt;br&gt;area with skill. The validated model was used to simulate changes in sediment transport for existing&lt;br&gt;conditions and with the proposed modifications to the navigational channel (with-project),&lt;br&gt;with and without accounting for 0.5 meter (m) of sea level rise (SLR). Each scenario was simulated&lt;br&gt;for 1 year with a wave climatology representative of the year 2010 as well as for 10 years&lt;br&gt;with a longer-term wave climatology spanning from 1988 to 2016. Bed level differences for the&lt;br&gt;existing and with-project 2010 simulations were minimal, ranging from −0.11 to 0.11 m offshore&lt;br&gt;of Pelican Island and −0.81 to 0.22 m offshore of the Fort Morgan Peninsula. For the simulations&lt;br&gt;accounting for 0.5 m of SLR, differences in bed levels from −0.20 to 0.32 m near Pelican&lt;br&gt;Island and −0.38 to 0.34 m offshore of the Fort Morgan Peninsula. The proposed modifications&lt;br&gt;reduced the channel shoaling volume by 4.77 and 8.09 percent for the 2010 simulations without&lt;br&gt;and with 0.5 m of SLR, respectively. For the 10-year simulations, bed level differences for the&lt;br&gt;existing and with-project simulations ranged from −3.17 to 3.94 m for the simulation without&lt;br&gt;SLR and −1.92 to 1.47 m for the simulation with 0.5 m of SLR. The with-project condition reduced&lt;br&gt;the entrance channel shoaling volume by 5.54 percent for the simulation without SLR and&lt;br&gt;14.98 percent for the simulation with 0.5 m of SLR.&lt;/p&gt;</dc:description>
  <dc:format>application/pdf</dc:format>
  <dc:identifier>10.3133/ofr20181123</dc:identifier>
  <dc:language>en</dc:language>
  <dc:publisher>U.S. Geological Survey</dc:publisher>
  <dc:title>Effects of proposed navigation channel improvements on sediment transport in Mobile Harbor, Alabama</dc:title>
  <dc:type>reports</dc:type>
</oai_dc:dc>