CSDMS - User contributions [en]

Science spotlights

2010-12-21T17:18:50Z

Shark: /* Boom-and-bust cycles of barrier island retreat */ built->build

= Science spotlights =
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==Boom-and-bust cycles of barrier island retreat==
''Science in the spotlight: December 2010 - January 2011''
[[image:Galveston_Ike.png|400px|right|wrap|thumb|link=|Galveston Barrier Island, on September 9, 2008. Ike made its final landfall near [http://en.wikipedia.org/wiki/Galveston Galveston], [http://en.wikipedia.org/wiki/Texas Texas]. Galveston experienced a bust after a major 1900 storm, but recovered as a tourist resort from the 1930’s onwards. It remains vulnerable today.]]

Barrier Islands, the low-lying sandy strips separated from the coast by a lagoon, are a favorite location to build beach resorts. Whereas a natural barrier system would steadily migrate with sea-level rise, barriers evolution is now dynamically coupled to human action to prevent storm erosion. CSDMS scientist '''Dylan McNamara''', currently at the University of North Carolina, has been on the forefront of coupled modeling of barrier island physical processes and human factors such as hazard mitigation driven by market development.

McNamara’s model shows that barrier island are maintained at unnaturally low elevations and that this situation filters out the frequent small responses to storm events, but that the inherently instability creates longterm boom-and–bust cycles of barrier island retreat.

===References===
* McNamara, D. and Werner, B., 2008. Coupled Barrier Island-Resort Model: 1. Emergent instabilities induced by strong human-landscape interactions. ''Journal of Geophysical Research – Earth Surface'', 113, F01016, doi:[http://dx.doi.org/10.1029/2007JF000840 10.1029/2007JF000840].
* McNamara, D. and Werner, B., 2008. Coupled Barrier Island-Resort Model: 2. Tests and predictions along Ocean City and Assateague Island National Seashore, Maryland. ''Journal of Geophysical Research – Earth Surface'', 113, F01017, doi:[http://dx.doi.org/10.1029/2007JF000841 10.1029/2007JF000841].

===Links===
* [http://uncw.edu/phy/fac-mcnamara.html Dylan McNamara’s home page].

HPCCprojects:Niger Delta Project

2010-11-05T16:17:15Z

Shark: /* Links */

__NOTOC__
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==Project description==
# Acquire and analyze precipitation, evapotranspiration and discharge data from available sources, for the Niger Delta.
# Determine the runoff entering the delta system from upstream sources, versus local-derived rainfall.
# Analyze Shuttle Radar (SRTM) topography along with other satellite data (e.g. LANDSAT) to assess the dimensions of the Niger distributary channels.
# Develop a hydrological model for the Niger Delta area to handle distributary channels efflux. Using satellite imagery, ascertain the local drainage basins for each of the major Niger Delta estuaries.
# Couple the hydrological model with a simplified semi-diurnal tidal model and develop a time-dependent flow routing model of the Niger Delta.
# Model the time dependent sediment load to the Niger Delta, and distribute the load through the various distributary channels.
# Qualitatively verify sediment flux predictions using satellite imagery of both channel turbidity, and plume turbidity.
# Apply the PSI model (Syvitski et al., 2005a; Kettner and Syvitski, 2008) to the hydrological flow routing model of the Niger Delta and predict the flux of sediment through the various distributary channels.

==Objectives==
Determine the dispersal mechanisms of the terrestrial flux of sediment and the coastal trapping of sediment of deltaic distributary channels with focus on the Niger Delta. Conduct a hydrological assessment of the fluxes of water and sediment to the shorelines of Niger Delta, Nigeria. Assess the timing of discharge events, suspended load and bed load.

==Time-line==
Start date: 2008 
End date: 2010

==Models used==
* [[Model:TopoFlow|TopoFlow]]
* [[Model:HydroTrend|HydroTrend]]

==Results==
{|cellspacing="0" cellpadding="2" style="color:white"
|bgcolor="gray"|[[image:Niger_delta_project.png|400px]]
|-
|bgcolor="gray" align="center"| Niger Delta drainage basins and outlets
|}

==Users==
* [[User:Shark|Mark Hannon]]
* [[User:Peckhams|Scott Peckham]]
* [[User:WikiSysop|Albert Kettner]]

==Funding==
--

==Publications and Presentations==
--Hannon, M.T., Syvitski, J.P.M.,Kettner, A.J., December 2008. Hydrologic modeling of a tropical river delta by applying remote sensing data: The Niger Delta and its distributaries. AGU fall meeting, San Francisco, USA.

==Links==
http://adsabs.harvard.edu/abs/2008AGUFM.H53B1050H

HPCCprojects:Niger Delta Project

2010-11-05T16:16:16Z

Shark: /* Publications and Presentations */

Data

2009-06-19T16:11:45Z

Shark: /* Data */ Added Geology

{{Data Tools}}
===Data===

On the following pages you will find information about data sources which might be useful as input data for a certain model. Please [mailto:csdms@colorado.edu email] us if you want to add your data or if you know more data sources that might become useful as input data.

[[Topography_data|Topography]]

[[Bathymetry_data|Bathymetry]]

[[Climate_data|Climate]]

[[Hydrography_data|Hydrography]]

[[Discharge_data|River discharge]]

[[Glacier_data|Cryosphere]]

[[Geology data|Geology]]

[[Soil data|Soils]]

[[Sealevel_data|Sea level]]

[[Land Cover data|Land Cover]]

[[Human data|Human Dimensions]]

File:Photo Hannon1.jpg

2008-08-20T18:22:04Z

Shark:

Staff

2008-08-20T18:21:37Z

Shark:

===CSDMS Facility Personnel===

{|
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[[image:James_Syvitski1.JPG|80px]]
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[http://instaar.colorado.edu/people/bios/syvitski.html James P.M. Syvitski] '''Executive Director''' (303) 735-5482 
[mailto:james.syvitski@colorado.edu james.syvitski@colorado.edu]
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[[image:Photo_Peckham_w80_h110.jpg]]
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[http://instaar.colorado.edu/people/bios/peckham.html Scott D. Peckham] '''Chief Software Architect''' (303) 492-6752 
[mailto:scott.peckham@colorado.edu scott.peckham@colorado.edu]
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[[image:Photo_Overeem.jpg|80px]]
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[http://instaar.colorado.edu/~overeem.html Irina Overeem] '''Research Scientist''' (303) 492-6631 
[mailto:irina.overeem@colorado.edu irina.overeem@colorado.edu]
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[[image:Photo_Hutton.jpg|80px]]
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Eric Hutton '''Research Scientist''' (303) 492-6233 
[mailto:eric.hutton@colorado.edu eric.hutton@colorado.edu]
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{|
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[[image:Photo_Kettner.jpg|80px]]
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[http://instaar.colorado.edu/~kettner.html Albert Kettner] '''Research Scientist''' (303) 735-5486 
[mailto:kettner@colorado.edu kettner@colorado.edu]
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[[image:Photo_Bachman.jpg|80px]]
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Scott Bachman '''Grad. Research Assistant''' (303) 735-5485 
[mailto:scott.bachman@colorado.edu scott.bachman@colorado.edu]
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[[image:Photo_Hannon1.jpg|80px]]
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Mark Hannon '''Grad. Research Assistant''' (303) 735-5250 
[mailto:mark.hannon@colorado.edu mark.hannon@colorado.edu]
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[[image:Photo_Lofton.jpg|80px]]
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{|
|valign="top" style=" font-size:0.88em;"|
Marlene Lofton '''Executive Assistant ''' (303) 735-5482 
[mailto:marlene.lofton@colorado.edu marlene.lofton@colorado.edu]
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{|
|valign="top"|
[[image:Photo_Stoffel.jpg|80px]]
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[http://instaar.colorado.edu/~stoffelc/ Chad Stoffel] '''System Administrator''' (303) 735-5216 
[mailto:chad.stoffel@colorado.edu chad.stoffel@colorado.edu]
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