https://csdms.colorado.edu/csdms_wiki/api.php?action=feedcontributions&user=Uwe.best&feedformat=atomCSDMS - User contributions [en]2024-03-28T12:49:50ZUser contributionsMediaWiki 1.38.4https://csdms.colorado.edu/csdms_wiki/index.php?title=Presenters-0482&diff=241942Presenters-04822020-02-12T18:22:17Z<p>Uwe.best: </p>
<hr />
<div>{{Presenters temp<br />
|CSDMS meeting event title=CSDMS 2020: Linking Ecosphere and Geosphere<br />
|CSDMS meeting event year=2020<br />
|CSDMS meeting presentation type=Invited oral presentation<br />
|CSDMS meeting first name=Uwe<br />
|CSDMS meeting last name=Best<br />
|CSDMS meeting institute=IHE Delft Institute for Water Education<br />
|Country member=Netherlands<br />
|CSDMS meeting email address=u.best@un-ihe.org<br />
|CSDMS meeting title presentation=Mangrove Interaction with Tidal Flow, Waves & long term sedimentation: Combining Field Data & Numerical Modelling<br />
}}<br />
{{Presenters coauthors<br />
|CSDMS meeting first name co1=Mick<br />
|CSDMS meeting last name co1=van der Wegen<br />
|CSDMS meeting institute co1=IHE Delft Institute for Water Education<br />
|CSDMS meeting country co1=Netherlands<br />
|CSDMS meeting email address co1=m.vanderwegen@un-ihe.org<br />
}}<br />
{{Presenters coauthors<br />
|CSDMS meeting first name co1=Jasper<br />
|CSDMS meeting last name co1=Dijkstra<br />
|CSDMS meeting institute co1=Deltares<br />
|CSDMS meeting country co1=Netherlands<br />
|CSDMS meeting email address co1=Jasper.Dijkstra@deltares.nl<br />
}}<br />
{{Presenters coauthors<br />
|CSDMS meeting first name co1=Dano<br />
|CSDMS meeting last name co1=Roelvink<br />
|CSDMS meeting institute co1=IHE Delft Institute for Water Education<br />
|CSDMS meeting country co1=Netherlands<br />
|CSDMS meeting email address co1=d.roelvink@un-ihe.org<br />
}}<br />
{{Presenters presentation<br />
|CSDMS meeting abstract presentation=The projected increases in the frequency and magnitude of hazards, which threaten the coastal hinterland, heighten the need for an enhanced understanding of the determining mechanisms for mangrove adaptation and their contribution to coastal safety. This research seeks to improve the understanding of the bio-physical processes governing the geomorphological evolution of the mangrove-mudflat system by combining spatially explicit observations of mangrove population dynamics with process-based modelling.<br />
<br />
Field observations were taken at the Le Ressouvenir- Chateau Margot mangrove-mudflat, within the 300m wide fringe and on the mudflat extending 6km offshore, along the Guyana coastline. This coastline resides 1m below sea level and, is subject to a semi-diurnal tidal regime with a maximum tidal range of 3.5m during spring tide. Using the data collected on the elevation, vegetation, water level, flow velocities, sediment concentration and wave heights; we developed a 2D depth averaged model using a process-based approach. On a high resolution grid of 10m, the model predicts the geomorphological development from the interaction between the intertidal flow, waves, sediment transport and the temporal and spatial variation in the mangrove growth, drag and bio-accumulation. Here, we coupled Delft3D-FM with a mangrove dynamics model capturing the Avicennia germinans and Laguncularia racemosa species under suitable inundation and competition regimes.<br />
<br />
Waves are critical for the transport of mud into the mangrove belt during high tide. Only when approaching spring tide is the inner part of the fringe inundation, creating a heightened platform which governs the species establishment. The channels form the major path for the tidal inflow during the lower tides, while the interior of the forest is an effective sediment sink during the higher tides. Sea level rise scenarios reinforce field observations for mangrove retreat and decay, with tipping points realized after 1.5m to 2.0m. <br />
<br />
Results indicate mangrove adaptability, to climate change and anthropogenic threats, hinges on the long term sedimentation responses and system conditions to promote the establishment of stable belt widths.<br />
|CSDMS meeting youtube code=0<br />
|CSDMS meeting participants=0<br />
}}<br />
{{Presenters additional material<br />
|Working group member=Terrestrial Working Group, Coastal Working Group, Education and Knowledge Transfer (EKT) Working Group, Ecosystem Dynamics Focus Research Group, Continental Margin Initiative<br />
}}</div>Uwe.besthttps://csdms.colorado.edu/csdms_wiki/index.php?title=Presenters-0482&diff=241940Presenters-04822020-02-12T17:52:08Z<p>Uwe.best: </p>
<hr />
<div>{{Presenters temp<br />
|CSDMS meeting event title=CSDMS 2020: Linking Ecosphere and Geosphere<br />
|CSDMS meeting event year=2020<br />
|CSDMS meeting presentation type=Invited oral presentation<br />
|CSDMS meeting first name=Uwe<br />
|CSDMS meeting last name=Best<br />
|CSDMS meeting institute=IHE Delft Institute for Water Education<br />
|Country member=Netherlands<br />
|CSDMS meeting email address=u.best@un-ihe.org<br />
|CSDMS meeting title presentation=Mangrove Interaction with Tidal Flow, Waves & long term sedimentation: Combining Field Data & Numerical Modelling<br />
}}<br />
{{Presenters coauthors<br />
|CSDMS meeting first name co1=Mick<br />
|CSDMS meeting last name co1=van der Wegen<br />
|CSDMS meeting institute co1=IHE Delft Institute for Water Education<br />
|CSDMS meeting country co1=Netherlands<br />
|CSDMS meeting email address co1=m.vanderwegen@un-ihe.org<br />
}}<br />
{{Presenters coauthors<br />
|CSDMS meeting first name co1=Jasper<br />
|CSDMS meeting last name co1=Dijkstra<br />
|CSDMS meeting institute co1=Deltares<br />
|CSDMS meeting country co1=Netherlands<br />
|CSDMS meeting email address co1=Jasper.Dijkstra@deltares.nl<br />
}}<br />
{{Presenters coauthors<br />
|CSDMS meeting first name co1=Dano<br />
|CSDMS meeting last name co1=Roelvink<br />
|CSDMS meeting institute co1=IHE Delft Institute for Water Education<br />
|CSDMS meeting country co1=Netherlands<br />
|CSDMS meeting email address co1=d.roelvink@un-ihe.org<br />
}}<br />
{{Presenters presentation<br />
|CSDMS meeting abstract presentation=The projected increases in the frequency and magnitude of hazards, which threaten the coastal hinterland, heighten the need for an enhanced understanding of the determining mechanisms for mangroves adaptation and their contribution to coastal safety. This research seeks to improve the understanding of the bio-physical processes governing the geomorphological evolution of the mangrove-mudflat system by combining spatially explicit observations of mangrove population dynamics with process-based modelling.<br />
<br />
Field observations were taken at the Le Ressouvenir- Chateau Margot mangrove-mudflat, within the 300m wide fringe and on the mudflat extending 6km offshore, along the Guyana coastline. This coastline resides 1m below sea level and, is subject to a semi-diurnal tidal regime with a maximum tidal range of 3.5m during spring tide. Using the data collected on the elevation, vegetation, water level, flow velocities, sediment concentration and wave heights; we developed a 2D depth averaged model using a process-based approach. On a high resolution grid of 10m, the model predicts the geomorphological development from the interaction between the intertidal flow, waves, sediment transport and the temporal and spatial variation in the mangrove growth, drag and bio-accumulation. Here, we coupled Delft3D-FM with a mangrove dynamics model capturing the Avicennia germinans and Laguncularia racemosa species under suitable inundation and competition regimes.<br />
<br />
Waves are critical for the transport of mud into the mangrove belt during high tide. Only when approaching spring tide is the inner part of the fringe inundation, creating a heightened platform which governs the species establishment. The channels form the major path for the tidal inflow during the lower tides, while the interior of the forest is an effective sediment sink during the higher tides. Sea level rise scenarios reinforce field observations for mangrove retreat and decay, with tipping points realized after 1.5m to 2.0m. <br />
<br />
Results indicate mangrove adaptability, to climate change and anthropogenic threats, hinges on the long term sedimentation responses and system conditions to promote the establishment of stable belt widths.<br />
|CSDMS meeting youtube code=0<br />
|CSDMS meeting participants=0<br />
}}<br />
{{Presenters additional material<br />
|Working group member=Terrestrial Working Group, Coastal Working Group, Education and Knowledge Transfer (EKT) Working Group, Ecosystem Dynamics Focus Research Group, Continental Margin Initiative<br />
}}</div>Uwe.besthttps://csdms.colorado.edu/csdms_wiki/index.php?title=Presenters-0482&diff=241939Presenters-04822020-02-12T17:49:01Z<p>Uwe.best: Created page with "{{Presenters temp |CSDMS meeting event title=CSDMS 2020: Linking Ecosphere and Geosphere |CSDMS meeting event year=2020 |CSDMS meeting presentation type=Invited oral presentat..."</p>
<hr />
<div>{{Presenters temp<br />
|CSDMS meeting event title=CSDMS 2020: Linking Ecosphere and Geosphere<br />
|CSDMS meeting event year=2020<br />
|CSDMS meeting presentation type=Invited oral presentation<br />
|CSDMS meeting first name=Uwe<br />
|CSDMS meeting last name=Best<br />
|CSDMS meeting institute=IHE Delft Institute for Water Education<br />
|Country member=Netherlands<br />
|CSDMS meeting email address=u.best@un-ihe.org<br />
|CSDMS meeting title presentation=Mangrove Interaction with Tidal Flow, Waves & long term sedimentation: Combining Field Data & Numerical Modelling<br />
}}<br />
{{Presenters presentation<br />
|CSDMS meeting abstract presentation=The projected increases in the frequency and magnitude of hazards, which threaten the coastal hinterland, heighten the need for an enhanced understanding of the determining mechanisms for mangroves adaptation and their contribution to coastal safety. This research seeks to improve the understanding of the bio-physical processes governing the geomorphological evolution of the mangrove-mudflat system by combining spatially explicit observations of mangrove population dynamics with process-based modelling.<br />
<br />
Field observations were taken at the Le Ressouvenir- Chateau Margot mangrove-mudflat, within the 300m wide fringe and on the mudflat extending 6km offshore, along the Guyana coastline. This coastline resides 1m below sea level and, is subject to a semi-diurnal tidal regime with a maximum tidal range of 3.5m during spring tide. Using the data collected on the elevation, vegetation, water level, flow velocities, sediment concentration and wave heights; we developed a 2D depth averaged model using a process-based approach. On a high resolution grid of 10m, the model predicts the geomorphological development from the interaction between the intertidal flow, waves, sediment transport and the temporal and spatial variation in the mangrove growth, drag and bio-accumulation. Here, we coupled Delft3D-FM with a mangrove dynamics model capturing the Avicennia germinans and Laguncularia racemosa species under suitable inundation and competition regimes.<br />
<br />
Waves are critical for the transport of mud into the mangrove belt during high tide. Only when approaching spring tide is the inner part of the fringe inundation, creating a heightened platform which governs the species establishment. The channels form the major path for the tidal inflow during the lower tides, while the interior of the forest is an effective sediment sink during the higher tides. Sea level rise scenarios reinforce field observations for mangrove retreat and decay, with tipping points realized after 1.5m to 2.0m. <br />
<br />
Results indicate mangrove adaptability, to climate change and anthropogenic threats, hinges on the long term sedimentation responses and system conditions to promote the establishment of stable belt widths.<br />
|CSDMS meeting youtube code=0<br />
|CSDMS meeting participants=0<br />
}}<br />
{{Presenters additional material<br />
|Working group member=Terrestrial Working Group, Coastal Working Group, Education and Knowledge Transfer (EKT) Working Group, Ecosystem Dynamics Focus Research Group, Continental Margin Initiative<br />
}}</div>Uwe.besthttps://csdms.colorado.edu/csdms_wiki/index.php?title=2018_CSDMS_meeting-099&diff=2171242018 CSDMS meeting-0992018-03-19T17:06:26Z<p>Uwe.best: Created page with "{{CSDMS meeting personal information template-2018 |CSDMS meeting first name=Üwe |CSDMS meeting last name=Best |CSDMS meeting institute=IHE-Delft Institute for Water Educatio..."</p>
<hr />
<div>{{CSDMS meeting personal information template-2018<br />
|CSDMS meeting first name=Üwe<br />
|CSDMS meeting last name=Best<br />
|CSDMS meeting institute=IHE-Delft Institute for Water Education<br />
|CSDMS meeting city=Delft<br />
|CSDMS meeting country=Netherlands<br />
|CSDMS meeting email address=u.best@un-ihe.org<br />
|CSDMS meeting phone=+31 684759259<br />
}}<br />
{{CSDMS meeting scholar and pre-meeting<br />
|CSDMS meeting pre-conference=None<br />
|CSDMS meeting post-conference=No<br />
}}<br />
{{CSDMS meeting select clinics1 2018<br />
|CSDMS_meeting_select_clinics1_2018=4) Sediment Experimentalist Network<br />
}}<br />
{{CSDMS meeting select clinics2 2018<br />
|CSDMS_meeting_select_clinics2_2018=1) Structure from Motion (SfM)<br />
}}<br />
{{CSDMS meeting select clinics3 2018<br />
|CSDMS_meeting_select_clinics3_2018=3) ANUGA<br />
}}<br />
{{CSDMS scholarships yes no<br />
|CSDMS meeting scholarships=Yes<br />
}}<br />
{{CSDMS meeting abstract yes no 2018<br />
|CSDMS meeting abstract submit=Yes<br />
}}<br />
{{CSDMS meeting abstract title temp2018<br />
|CSDMS meeting abstract title=Modelling Wave Action, Surges, Morphodynamics and Vegetation Dynamics: Do Salt Marsh & Mangrove Fringe Coastlines Survive Sea Level Rise?<br />
}}<br />
{{CSDMS meeting authors template<br />
|CSDMS meeting coauthor first name abstract=Dr. ir. Mick<br />
|CSDMS meeting coauthor last name abstract=van der Wegen<br />
|CSDMS meeting coauthor institute / Organization=IHE-Delft Institute for Water Education<br />
|CSDMS meeting coauthor town-city=Delft<br />
|CSDMS meeting coauthor country=Netherlands<br />
|CSDMS meeting coauthor email address=m.vanderwegen@un-ihe.org<br />
}}<br />
{{CSDMS meeting authors template<br />
|CSDMS meeting coauthor first name abstract=Prof. dr. ir. Dano<br />
|CSDMS meeting coauthor last name abstract=Roelvink<br />
|CSDMS meeting coauthor institute / Organization=IHE-Delft Institute for Water Education<br />
|CSDMS meeting coauthor town-city=Delft<br />
|CSDMS meeting coauthor country=Netherlands<br />
|CSDMS meeting coauthor email address=d.roelvink@un-ihe.org<br />
}}<br />
{{CSDMS meeting abstract template 2018<br />
|CSDMS meeting abstract=This study aims to fundamentally assess the impact of sea level rise (SLR) on vegetated, muddy coastlines. This includes an assessment of the resilience of coupled salt marsh-mudflat and mangrove fringe-mudflat coastlines under different sea level rise scenarios. <br />
<br />
Traditionally, the design of coastal protection measures revolved around the use of hard structures to ensure a certain level of design safety against flooding of the coastal hinterland. However, with the effects of climate change: sea level rise, increased intensities and frequencies of storms; these solutions appear to be unsustainable. Building-with-Nature strategies have reinforced the value of vegetated foreshores, as being capable of allowing for a flexible and adaptive response to climate change. They attenuate wave energy, stabilize and may heighten the foreshore at a rate that matches that of sea level rise. Important parameters related to the resilience of vegetated foreshores to sea level rise are site specific and include sediment supply, wave climate, tidal range, sea level rise rates, type of vegetation cover, vegetation dynamics and topography. <br />
<br />
Process-based numerical modelling tools are critical towards enhancing the understanding of the processes governing the morphological development of vegetated-mudflat systems. Limited studies have quantified the impact of sea level rise on the resilience of these intertidal systems with a key focus on determining the tipping points and the governing processes for bio-geomorphological development. Therefore, we applied an open-source 2D process-based model (Delft3D) that couples intertidal flow, wave-action, sediment transport, morphodynamic development with the vegetation dynamics for temporal and spatial growth and decay of vegetation and bio-accumulation. <br />
<br />
The vegetation growth model was developed using MATLAB, which was then coupled with a depth averaged Delft3D model. For the salt marsh species, the growth model was based on that of a population dynamics approach whereas the mangrove growth model was based on a windows of opportunity approach. The model setup was inspired by conditions within the Dutch South Western Scheldt and the Guyana coastline for the salt marshes and mangroves respectively. The numerical model and the coupling approach were validated quantitatively against existing theory, data and laboratory studies; after which the system’s resilience against sea level rise was examined.<br />
Spatial equilibrium of the marsh-mudflat system was attained within 120 years with wave action and sediment dynamics being key triggers. The mangrove fringe-mudflat model however attains equilibrium on longer timescales. The subsequent imposition of a 100 year period of rising sea-level (1.1m) in salt marsh-mudflat systems revealed the biomass accumulation as a critical determinant for the drowning rate. Though, initially highly resilient against the exponential increase of sea level rise, the marsh system starts to drown as channels incise the platform after 50-60 years. This corroborates recent studies which predict a decline in the carbon sequestration potential of salt marshes within the North Sea. Contrastingly, the mangrove fringe-mudflat system proved resilient after a 100 year period of extreme SLR and the increases in drag gained from their extensive mangrove root network and the below ground biomass accumulation proved to be the main drivers. However, after 150 years, there is a shift in the nature of the system as it starts to drown. Results show survival for both systems in sediment rich areas. Overall, the model can be applied to assess the vulnerability and resilience of vegetated coastal areas impacted by sea-level-rise worldwide. Thereby, proving to be a useful tool for developing countries where data is scare. Both the Delft3D software and MATLAB tools used in this study are open source and freely available online: https://oss.deltares.nl/web/delft3d. The running of the model requires the use of MATLAB versions 2013 or higher. This software can be attained through purchase, student version or trial online: https://nl.mathworks.com/products/matlab.html. With regards to the hardware required, a standard PC with minimum 8GB RAM. Additionally, the MATLAB source code will be made available via the Environmental Modelling and Software Journal (ESM) once published.<br />
}}<br />
{{blank line template}}</div>Uwe.besthttps://csdms.colorado.edu/csdms_wiki/index.php?title=User:Uwe.best&diff=217123User:Uwe.best2018-03-19T15:01:17Z<p>Uwe.best: </p>
<hr />
<div>{{Signup information member<br />
|First name member=Üwe<br />
|Last name member=Best<br />
|Picture member=0.jpg<br />
|Institute member=IHE-Delft Institute for Water Education<br />
|Department member=Water Science & Engineering, CEPD<br />
|Postal address 1 member=Westvest 7<br />
|Postal address 2 member=2611 AX Delft, The Netherlands.<br />
|City member=Delft<br />
|Postal code member=2611 AX<br />
|Country member=Netherlands<br />
|Confirm email member=u.best@un-ihe.org<br />
|Cell phone member=+31 684759259<br />
|Working group member=Coastal Working Group, Education and Knowledge Transfer (EKT) Working Group, Ecosystem Dynamics Focus Research Group, Coastal Vulnerability Initiative, Continental Margin Initiative<br />
|Emaillist group member=yes<br />
|Description of your CSDMS-related interests member=•Integrated Coastal Zone Management: Hybrid Designs and Restoration Techniques.<br />
•Resilience Indicators for Sea Level Impacts on low lying coastal areas.<br />
•Extreme Waves and Storm Impacts on vegetated-mudflat systems<br />
}}</div>Uwe.besthttps://csdms.colorado.edu/csdms_wiki/index.php?title=User:Uwe.best&diff=217122User:Uwe.best2018-03-19T15:00:32Z<p>Uwe.best: </p>
<hr />
<div>{{Signup information member<br />
|First name member=Üwe<br />
|Last name member=Best<br />
|Picture member=0.jpg<br />
|Institute member=IHE-Delft Institute for Water Education<br />
|Department member=Water Science & Engineering, CEPD<br />
|Postal address 1 member=Westvest 7<br />
|Postal address 2 member=2611 AX Delft, The Netherlands.<br />
|City member=Delft<br />
|Postal code member=2611 AX<br />
|Country member=Netherlands<br />
|Confirm email member=u.best@un-ihe.org<br />
|Cell phone member=+31 684759259<br />
|Working group member=Coastal Working Group, Education and Knowledge Transfer (EKT) Working Group, Ecosystem Dynamics Focus Research Group, Coastal Vulnerability Initiative, Continental Margin Initiative<br />
|Emaillist group member=yes<br />
|Description of your CSDMS-related interests member=•Integrated Coastal Zone Management: Hybrid Designs and Restoration Techniques<br />
•Resilience Indicators for Sea Level Impacts on low lying coastal areas.<br />
•Extreme Waves and Storm Impacts on vegetated-mudflat systems<br />
}}</div>Uwe.besthttps://csdms.colorado.edu/csdms_wiki/index.php?title=File:0.jpg&diff=217121File:0.jpg2018-03-19T15:00:15Z<p>Uwe.best: </p>
<hr />
<div></div>Uwe.besthttps://csdms.colorado.edu/csdms_wiki/index.php?title=User:Uwe.best&diff=217120User:Uwe.best2018-03-19T14:59:23Z<p>Uwe.best: Created page with "{{Signup information member |First name member=Üwe |Last name member=Best |Institute member=IHE-Delft Institute for Water Education |Department member=Water Science & Enginee..."</p>
<hr />
<div>{{Signup information member<br />
|First name member=Üwe<br />
|Last name member=Best<br />
|Institute member=IHE-Delft Institute for Water Education<br />
|Department member=Water Science & Engineering, CEPD<br />
|Postal address 1 member=Westvest 7<br />
|Postal address 2 member=2611 AX Delft, The Netherlands.<br />
|City member=Delft<br />
|Postal code member=2611 AX<br />
|Country member=Netherlands<br />
|Confirm email member=u.best@un-ihe.org<br />
|Cell phone member=+31 684759259<br />
|Working group member=Coastal Working Group, Education and Knowledge Transfer (EKT) Working Group, Ecosystem Dynamics Focus Research Group, Coastal Vulnerability Initiative, Continental Margin Initiative<br />
|Emaillist group member=yes<br />
|Description of your CSDMS-related interests member=•Integrated Coastal Zone Management: Hybrid Designs and Restoration Techniques<br />
•Resilience Indicators for Sea Level Impacts on low lying coastal areas.<br />
•Extreme Waves and Storm Impacts on vegetated-mudflat systems<br />
}}</div>Uwe.best