https://csdms.colorado.edu/csdms_wiki/api.php?action=feedcontributions&feedformat=atom&user=Sheehace 2026-04-28T00:03:02Z User contributions MediaWiki 1.44.2 https://csdms.colorado.edu/csdms_wiki/index.php?title=2024_CSDMS_meeting-095&diff=439395 2024-03-31T19:52:27Z

<p>Sheehace: </p> <hr /> <div>{{CSDMS meeting personal information template-2024<br /> |CSDMS meeting first name=Christopher<br /> |CSDMS meeting last name=Sheehan<br /> |CSDMS meeting institute=University of Dayton<br /> |CSDMS meeting city=Dayton<br /> |CSDMS meeting country=United States<br /> |CSDMS meeting state=Ohio<br /> |CSDMS meeting email address=csheehan1@udayton.edu<br /> }}<br /> {{CSDMS meeting select clinics1 2024<br /> |CSDMS_meeting_select_clinics1_2024=4) The Last FAIR Clinic You'll Ever Need<br /> }}<br /> {{CSDMS meeting select clinics2 2024<br /> |CSDMS_meeting_select_clinics2_2024=4) Coupling biological and surface processes in landscape evolution models<br /> }}<br /> {{CSDMS meeting select clinics3 2024<br /> |CSDMS_meeting_select_clinics3_2024=1) Using Fill-Spill-Merge to understand and analyze landscape depressions<br /> }}<br /> {{CSDMS meeting abstract yes no 2024<br /> |CSDMS meeting abstract submit 2024=Yes<br /> }}<br /> {{CSDMS meeting abstract poster Epub 2024<br /> |CSDMS meeting poster Epub submit 2024=Poster<br /> }}<br /> {{CSDMS meeting abstract title temp2024<br /> |CSDMS meeting abstract title=Strange Knickpoints: A Case Study in Using Landscape Evolution Models to Understand Site-Specific Landscape Complexities<br /> |Working_group_member_WG_FRG=Terrestrial Working Group, Critical Zone Focus Research Group, Geodynamics Focus Research Group<br /> }}<br /> {{CSDMS meeting authors template<br /> |CSDMS meeting coauthor first name abstract=Magdelyn<br /> |CSDMS meeting coauthor last name abstract=Stewart<br /> |CSDMS meeting coauthor institute / Organization=University of Dayton<br /> |CSDMS meeting coauthor town-city=Dayton<br /> |CSDMS meeting coauthor country=United States<br /> |State=Ohio<br /> |CSDMS meeting coauthor email address=stewartm20@udayton.edu<br /> }}<br /> {{CSDMS meeting abstract template 2024<br /> |CSDMS meeting abstract=The modern Ohio River network is a Rubrik’s Cube for anyone interested in dynamic river reorganization. Throughout the Quaternary, the cyclic growth of North American ice sheets forced the Ohio drainage network to oscillate between a north-flowing (towards the Gulf of St. Laurence or Hudson Bay) and west / south-flowing (towards the Gulf of Mexico, i.e., the modern river) configuration. These cycles produced a network of overprinted paleo valleys that reflect multiple episodes of river reorganization (the so-called “Teays” paleo river network). The overprinted nature of these valleys makes it very difficult to assess the timing of specific stream capture events. In order to unravel this complex history of river reorganization, geomorphologists can begin by constraining the timing of individual stream capture events that do not overprint older episodes of drainage reversal. <br /> <br /> <br /> One such event is likely present in Hocking Hills State Park in central Ohio, known for its hundreds of 30-50 m-tall waterfalls. These knickpoints were likely created when the upper reaches of the Salt Creek watershed were blocked by one of the ice sheets, forming a glacial lake that spilled over a drainage divide and rerouted the channel network from a west-flowing to a south-flowing configuration. The stream capture event would have also produced a local base level drop that created the knickpoints. This hypothesis implies that the knickpoints were all created at the same time; if true, we can constrain the timing of the capture event using catchment averaged erosion rates and knickpoint celerity models. <br /> <br /> However, the hypothesis also implies that the waterfalls should be located at the same approximate χ value. This is not the case; rather, there is prominent, N-S trend in χ values. Without an explanation for this trend, any age constraints on the capture timing will be suspect. <br /> <br /> We used Landlab-based landscape evolution models (LEMs) to explore several possible explanations for the trend in χ values. We found that following a single capture event, the trend can be explained by the specific combination of (a) the pre-capture channel topology; (b) the precise capture location; and (c) the spatial extent of different rock layers. We believe that this in an “Occam’s razer” scenario, because it allows the χ trend to be explained by a single, stream capture forcing. However, without the insights provided by our LEMs, we would have considered multiple forcings or stream capture events to be more likely. These simulations are a novel and interesting case study in how LEMs can be applied to understand unique complexities of specific field sites and also have important implications for using knickpoint celerity models to assess landscape evolution.<br /> }}<br /> {{blank line template}}</div>

Sheehace https://csdms.colorado.edu/csdms_wiki/index.php?title=2024_CSDMS_meeting-095&diff=439394 2024-03-31T19:51:04Z

<p>Sheehace: Created page with &quot;{{CSDMS meeting personal information template-2024 |CSDMS meeting first name=Christopher |CSDMS meeting last name=Sheehan |CSDMS meeting institute=University of Dayton |CSDMS meeting city=Dayton |CSDMS meeting country=United States |CSDMS meeting state=Ohio |CSDMS meeting email address=csheehan1@udayton.edu }} {{CSDMS meeting select clinics1 2024 |CSDMS_meeting_select_clinics1_2024=4) The Last FAIR Clinic You&#039;ll Ever Need }} {{CSDMS meeting select clinics2 2024 |CSDMS_me...&quot;</p> <hr /> <div>{{CSDMS meeting personal information template-2024<br /> |CSDMS meeting first name=Christopher<br /> |CSDMS meeting last name=Sheehan<br /> |CSDMS meeting institute=University of Dayton<br /> |CSDMS meeting city=Dayton<br /> |CSDMS meeting country=United States<br /> |CSDMS meeting state=Ohio<br /> |CSDMS meeting email address=csheehan1@udayton.edu<br /> }}<br /> {{CSDMS meeting select clinics1 2024<br /> |CSDMS_meeting_select_clinics1_2024=4) The Last FAIR Clinic You'll Ever Need<br /> }}<br /> {{CSDMS meeting select clinics2 2024<br /> |CSDMS_meeting_select_clinics2_2024=4) Coupling biological and surface processes in landscape evolution models<br /> }}<br /> {{CSDMS meeting select clinics3 2024<br /> |CSDMS_meeting_select_clinics3_2024=1) Using Fill-Spill-Merge to understand and analyze landscape depressions<br /> }}<br /> {{CSDMS meeting abstract yes no 2024<br /> |CSDMS meeting abstract submit 2024=Yes<br /> }}<br /> {{CSDMS meeting abstract poster Epub 2024<br /> |CSDMS meeting poster Epub submit 2024=Poster<br /> }}<br /> {{CSDMS meeting abstract title temp2024<br /> |CSDMS meeting abstract title=Strange Knickpoints: A Case Study in Using Landscape Evolution Models to Understand Site-Specific Landscape Complexities<br /> |Working_group_member_WG_FRG=Terrestrial Working Group, Critical Zone Focus Research Group, Geodynamics Focus Research Group<br /> }}<br /> {{CSDMS meeting authors template<br /> |CSDMS meeting coauthor first name abstract=Magdelyn<br /> |CSDMS meeting coauthor last name abstract=Stewart<br /> |CSDMS meeting coauthor institute / Organization=University of Dayton<br /> |CSDMS meeting coauthor town-city=Dayton<br /> |CSDMS meeting coauthor country=United States<br /> |State=Ohio<br /> |CSDMS meeting coauthor email address=stewartm20@udayton.edu<br /> }}<br /> {{CSDMS meeting abstract template 2024<br /> |CSDMS meeting abstract=The modern Ohio River network is a Rubrik’s Cube for anyone interested in dynamic river reorganization. Throughout the Quaternary, the cyclic growth of North American ice sheets forced the Ohio drainage network to oscillate between a north-flowing (towards the Gulf of St. Laurence or Hudson Bay) and west / south-flowing (towards the Gulf of Mexico, i.e., the modern river) configuration. These cycles produced a network of overprinted paleo valleys that reflect multiple episodes of river reorganization (the so-called “Teays” paleo river network). The overprinted nature of these valleys makes it very difficult to assess the timing of specific stream capture events. In order to unravel this complex history of river reorganization, geomorphologists can begin by constraining the timing of individual stream capture events that do not overprint older episodes of drainage reversal. <br /> <br /> One such event is likely present in Hocking Hills State Park in central Ohio, known for its hundreds of 30-50 m-tall waterfalls. These knickpoints were likely created when the upper reaches of the Salt Creek watershed were blocked by one of the ice sheets, forming a glacial lake that spilled over a drainage divide and rerouted the channel network from a west-flowing to a south-flowing configuration. The stream capture event would have also produced a local base level drop that created the knickpoints. This hypothesis implies that the knickpoints were all created at the same time; if true, we can constrain the timing of the capture event using catchment averaged erosion rates and knickpoint celerity models. <br /> <br /> However, the hypothesis also implies that the waterfalls should be located at the same approximate χ value. This is not the case; rather, there is prominent, N-S trend in χ values. Without an explanation for this trend, any age constraints on the capture timing will be suspect. <br /> <br /> We used Landlab-based landscape evolution models (LEMs) to explore several possible explanations for the trend in χ values. We found that following a single capture event, the trend can be explained by the specific combination of (a) the pre-capture channel topology; (b) the precise capture location; and (c) the spatial extent of different rock layers. We believe that this in an “Occam’s razer” scenario, because it allows the χ trend to be explained by a single, stream capture forcing. However, without the insights provided by our LEMs, we would have considered multiple forcings or stream capture events to be more likely. These simulations are a novel and interesting case study in how LEMs can be applied to understand unique complexities of specific field sites and also have important implications for using knickpoint celerity models to assess landscape evolution.<br /> }}<br /> {{blank line template}}</div>

Sheehace https://csdms.colorado.edu/csdms_wiki/index.php?title=User:Sheehace&diff=439382 2024-03-31T16:27:15Z

<p>Sheehace: </p> <hr /> <div>{{Signup information member<br /> |First name member=Christopher<br /> |Last name member=Sheehan<br /> |Picture member=20211024 171932.jpg<br /> |Institute member=University of Dayton<br /> |Department member=Geology and Environmental Geosciences<br /> |Postal address 1 member=300 College Park<br /> |City member=Dayton<br /> |Postal code member=45469<br /> |Country member=United States<br /> |State member=Ohio<br /> |Confirm email member=csheehan1@udayton.edu<br /> |Working group member=Terrestrial Working Group, Critical Zone Focus Research Group, Geodynamics Focus Research Group, Modeling Platform Interoperability Initiative, River Network Modeling Initiative<br /> |Emaillist group member=yes<br /> |Description of your CSDMS-related interests member=Earth Surface Processes Modeling<br /> |Memberagreement=I have read and agree to the Privacy Policy<br /> }}</div>

Sheehace https://csdms.colorado.edu/csdms_wiki/index.php?title=File:20211024_171932.jpg&diff=439381 2024-03-31T16:27:02Z

<p>Sheehace: </p> <hr /> <div></div>

Sheehace https://csdms.colorado.edu/csdms_wiki/index.php?title=2022_CSDMS_meeting-033&diff=417539 2022-04-14T17:52:03Z

<p>Sheehace: </p> <hr /> <div>{{CSDMS meeting personal information template-2022<br /> |CSDMS meeting first name=Christopher<br /> |CSDMS meeting last name=Sheehan<br /> |CSDMS meeting institute=Boston College Department of Earth and Environmental Sciences<br /> |CSDMS meeting city=Chestnut Hill<br /> |CSDMS meeting country=United States<br /> |CSDMS meeting state=Massachusetts<br /> |CSDMS meeting email address=sheehacz@bc.edu<br /> |CSDMS meeting phone=8569385707<br /> }}<br /> {{CSDMS meeting select clinics1 2022<br /> |CSDMS_meeting_select_clinics1_2022=3) The Art of Modeling<br /> }}<br /> {{CSDMS meeting select clinics2 2022<br /> |CSDMS_meeting_select_clinics2_2022=1) Modeling Water Movement and Reservoir Operations with mosartwmpy<br /> }}<br /> {{CSDMS meeting select clinics3 2022<br /> |CSDMS_meeting_select_clinics3_2022=1) Component Creation with Landlab<br /> }}<br /> {{CSDMS meeting abstract yes no 2022<br /> |CSDMS meeting abstract submit=Yes<br /> }}<br /> {{CSDMS meeting abstract title temp2022<br /> |CSDMS meeting abstract title=Modeling Future Sediment Transport Variations at a Watershed-Scale Using Landlab: A Preliminary Example from the Chestatee River in Northern Georgia, USA.<br /> |Working_group_member_WG_FRG=Terrestrial Working Group, Hydrology Focus Research Group, Geodynamics Focus Research Group<br /> }}<br /> {{CSDMS meeting authors template<br /> |CSDMS meeting coauthor first name abstract=Mark<br /> |CSDMS meeting coauthor last name abstract=Behn<br /> |CSDMS meeting coauthor institute / Organization=Boston College Department of Earth and Environmental Sciences<br /> |CSDMS meeting coauthor town-city=Chestnut Hill<br /> |CSDMS meeting coauthor country=United States<br /> |State=Massachusetts<br /> }}<br /> {{CSDMS meeting authors template<br /> |CSDMS meeting coauthor first name abstract=Noah<br /> |CSDMS meeting coauthor last name abstract=Snyder<br /> |CSDMS meeting coauthor institute / Organization=Boston College Department of Earth and Environmental Sciences<br /> |CSDMS meeting coauthor town-city=Chestnut Hill<br /> |CSDMS meeting coauthor country=United States<br /> |State=Massachusetts<br /> }}<br /> {{CSDMS meeting authors template<br /> |CSDMS meeting coauthor first name abstract=Travis<br /> |CSDMS meeting coauthor last name abstract=Dahl<br /> |CSDMS meeting coauthor institute / Organization=U.S. Army Engineer Research &amp; Development Center<br /> |CSDMS meeting coauthor town-city=Vicksburg<br /> |CSDMS meeting coauthor country=United States<br /> |State=Mississippi<br /> }}<br /> {{CSDMS meeting abstract template 2022<br /> |CSDMS meeting abstract=During the 21st century, anthropogenically modulated changes in climate and land cover will drive variations in sediment dynamics throughout rivers, reservoirs, and coastlines. These changes threaten the integrity of dams, levees, and riparian ecosystems, necessitating strategies to help mitigate their associated hazards and to detect and prevent adverse consequences of engineering solutions. To optimize these strategies, geomorphologists require calibrated, watershed-scale numerical simulations of sediment transport that can predict how fluvial networks will respond to different forcings throughout their catchments. <br /> We aim to develop watershed-scale landscape evolution models of several U.S. rivers to explore how climate and land-use change over the coming decades to centuries will influence sediment delivery to reservoirs, locks, harbors, and coasts. The models will be calibrated by historical sediment flux data, allowing them to predict how the fluvial systems will respond to plausible scenarios of future climatic and anthropogenic forcings. The Chattahoochee River in the southeastern U.S. is an ideal catchment to begin this work due to its recent urban development and sedimentation records near its outlet at Lake Seminole. We devise procedures for processing USGS NHDPlus HR datasets (Moore et al., 2019) at the HU4 and HU8 scale for compatibility with the fluvial process components of Landlab (Hobley et al., 2017; Barnhard et al., 2020). Using NLCD land cover products (Wickham et al., 2021), NRI erosion rate estimates (USDA, 2020), and historical streamflow and sediment load data (USGS, 2021), we will leverage Landlab to construct models of the Chattahoochee catchment and test their ability to replicate sedimentation records at Lake Seminole. Here, we present preliminary results obtained by applying these procedures to the Chestatee branch of the Chattahoochee River and its outlet at Lake Lanier in northern Georgia. Future versions of this workflow will use a range of projected 21st century precipitation and land cover changes to predict potential variations in future sediment generation, transport, and storage throughout the Chattahoochee watershed and other U.S. rivers.<br /> }}<br /> {{blank line template}}</div>

Sheehace https://csdms.colorado.edu/csdms_wiki/index.php?title=2022_CSDMS_meeting-033&diff=417538 2022-04-14T17:47:58Z

<p>Sheehace: </p> <hr /> <div>{{CSDMS meeting personal information template-2022<br /> |CSDMS meeting first name=Christopher<br /> |CSDMS meeting last name=Sheehan<br /> |CSDMS meeting institute=Boston College Department of Earth and Environmental Sciences<br /> |CSDMS meeting city=Chestnut Hill<br /> |CSDMS meeting country=United States<br /> |CSDMS meeting state=Massachusetts<br /> |CSDMS meeting email address=sheehacz@bc.edu<br /> |CSDMS meeting phone=8569385707<br /> }}<br /> {{CSDMS meeting select clinics1 2022<br /> |CSDMS_meeting_select_clinics1_2022=3) The Art of Modeling<br /> }}<br /> {{CSDMS meeting select clinics2 2022<br /> |CSDMS_meeting_select_clinics2_2022=1) Modeling Water Movement and Reservoir Operations with mosartwmpy<br /> }}<br /> {{CSDMS meeting select clinics3 2022<br /> |CSDMS_meeting_select_clinics3_2022=1) Component Creation with Landlab<br /> }}<br /> {{CSDMS meeting abstract yes no 2022<br /> |CSDMS meeting abstract submit=Yes<br /> }}<br /> {{CSDMS meeting abstract title temp2022<br /> |CSDMS meeting abstract title=Modeling Future Sediment Transport Variations at a Watershed-Scale Using Landlab: A Preliminary Example from the Chestatee River.<br /> |Working_group_member_WG_FRG=Terrestrial Working Group, Hydrology Focus Research Group, Geodynamics Focus Research Group<br /> }}<br /> {{CSDMS meeting authors template<br /> |CSDMS meeting coauthor first name abstract=Mark<br /> |CSDMS meeting coauthor last name abstract=Behn<br /> |CSDMS meeting coauthor institute / Organization=Boston College Department of Earth and Environmental Sciences<br /> |CSDMS meeting coauthor town-city=Chestnut Hill<br /> |CSDMS meeting coauthor country=United States<br /> |State=Massachusetts<br /> }}<br /> {{CSDMS meeting authors template<br /> |CSDMS meeting coauthor first name abstract=Noah<br /> |CSDMS meeting coauthor last name abstract=Snyder<br /> |CSDMS meeting coauthor institute / Organization=Boston College Department of Earth and Environmental Sciences<br /> |CSDMS meeting coauthor town-city=Chestnut Hill<br /> |CSDMS meeting coauthor country=United States<br /> |State=Massachusetts<br /> }}<br /> {{CSDMS meeting authors template<br /> |CSDMS meeting coauthor first name abstract=Travis<br /> |CSDMS meeting coauthor last name abstract=Dahl<br /> |CSDMS meeting coauthor institute / Organization=U.S. Army Engineer Research &amp; Development Center<br /> |CSDMS meeting coauthor town-city=Vicksburg<br /> |CSDMS meeting coauthor country=United States<br /> |State=Mississippi<br /> }}<br /> {{CSDMS meeting abstract template 2022<br /> |CSDMS meeting abstract=During the 21st century, anthropogenically modulated changes in climate and land cover will drive variations in sediment dynamics throughout rivers, reservoirs, and coastlines. These changes threaten the integrity of dams, levees, and riparian ecosystems, necessitating strategies to help mitigate their associated hazards and to detect and prevent adverse consequences of engineering solutions. In order to optimize these strategies, geomorphologists require calibrated, watershed-scale numerical simulations of sediment transport that can predict how fluvial networks will respond to different forcings throughout their catchments. <br /> We aim to develop watershed-scale landscape evolution models of several U.S. rivers to explore how climate and land-use change over the coming decades to centuries will influence sediment delivery to reservoirs, locks, harbors and coasts. The models will be calibrated by historical sediment flux data, allowing them to predict how the fluvial systems will respond to plausible scenarios of future climatic and anthropogenic forcings. The Chattahoochee River in the southeastern U.S. is an ideal catchment to begin this work due to its recent urban development and sedimentation records near its outlet at Lake Seminole. We devise procedures for processing USGS NHDPlus HR datasets (Moore et al., 2019) at the HU4 and HU8 scale for compatibility with the fluvial process components of Landlab (Hobley et al., 2017; Barnhard et al., 2020). Using NLCD land cover products (Wickham et al., 2021), NRI erosion rate estimates (USDA, 2020), and historical streamflow and sediment load data (USGS, 2021), we will leverage Landlab to construct models of the Chattahoochee catchment and test their ability to replicate sedimentation records at Lake Seminole. Here, we present preliminary results obtained by applying these procedures to the Chestatee branch of the Chattahoochee River and its outlet at Lake Lanier in northern Georgia. Future versions of this workflow will use a range of projected 21st century precipitation and land cover changes to predict potential variations in future sediment generation, transport, and storage throughout the Chattahoochee watershed and other U.S. rivers.<br /> }}<br /> {{blank line template}}</div>

Sheehace https://csdms.colorado.edu/csdms_wiki/index.php?title=2022_CSDMS_meeting-033&diff=417537 2022-04-14T17:44:23Z

<p>Sheehace: </p> <hr /> <div>{{CSDMS meeting personal information template-2022<br /> |CSDMS meeting first name=Christopher<br /> |CSDMS meeting last name=Sheehan<br /> |CSDMS meeting institute=Boston College Department of Earth and Environmental Sciences<br /> |CSDMS meeting city=Chestnut Hill<br /> |CSDMS meeting country=United States<br /> |CSDMS meeting state=Massachusetts<br /> |CSDMS meeting email address=sheehacz@bc.edu<br /> |CSDMS meeting phone=8569385707<br /> }}<br /> {{CSDMS meeting select clinics1 2022<br /> |CSDMS_meeting_select_clinics1_2022=3) The Art of Modeling<br /> }}<br /> {{CSDMS meeting select clinics2 2022<br /> |CSDMS_meeting_select_clinics2_2022=1) Modeling Water Movement and Reservoir Operations with mosartwmpy<br /> }}<br /> {{CSDMS meeting select clinics3 2022<br /> |CSDMS_meeting_select_clinics3_2022=1) Component Creation with Landlab<br /> }}<br /> {{CSDMS meeting abstract yes no 2022<br /> |CSDMS meeting abstract submit=Yes<br /> }}<br /> {{CSDMS meeting abstract title temp2022<br /> |CSDMS meeting abstract title=Modeling Future Sediment Transport Variations at a Watershed-Scale: A Preliminary Example from the Chattahoochee River.<br /> |Working_group_member_WG_FRG=Terrestrial Working Group, Hydrology Focus Research Group, Geodynamics Focus Research Group<br /> }}<br /> {{CSDMS meeting authors template<br /> |CSDMS meeting coauthor first name abstract=Mark<br /> |CSDMS meeting coauthor last name abstract=Behn<br /> |CSDMS meeting coauthor institute / Organization=Boston College Department of Earth and Environmental Sciences<br /> |CSDMS meeting coauthor town-city=Chestnut Hill<br /> |CSDMS meeting coauthor country=United States<br /> |State=Massachusetts<br /> }}<br /> {{CSDMS meeting authors template<br /> |CSDMS meeting coauthor first name abstract=Noah<br /> |CSDMS meeting coauthor last name abstract=Snyder<br /> |CSDMS meeting coauthor institute / Organization=Boston College Department of Earth and Environmental Sciences<br /> |CSDMS meeting coauthor town-city=Chestnut Hill<br /> |CSDMS meeting coauthor country=United States<br /> |State=Massachusetts<br /> }}<br /> {{CSDMS meeting authors template<br /> |CSDMS meeting coauthor first name abstract=Travis<br /> |CSDMS meeting coauthor last name abstract=Dahl<br /> |CSDMS meeting coauthor institute / Organization=U.S. Army Engineer Research &amp; Development Center<br /> |CSDMS meeting coauthor town-city=Vicksburg<br /> |CSDMS meeting coauthor country=United States<br /> |State=Mississippi<br /> }}<br /> {{CSDMS meeting abstract template 2022<br /> |CSDMS meeting abstract=During the 21st century, anthropogenically modulated changes in climate and land cover will drive variations in sediment dynamics throughout rivers, reservoirs, and coastlines. These changes threaten the integrity of dams, levees, and riparian ecosystems, necessitating strategies to help mitigate their associated hazards and to detect and prevent adverse consequences of engineering solutions. In order to optimize these strategies, geomorphologists require calibrated, watershed-scale numerical simulations of sediment transport that can predict how fluvial networks will respond to different forcings throughout their catchments. <br /> We aim to develop watershed-scale landscape evolution models of several U.S. rivers to explore how climate and land-use change over the coming decades to centuries will influence sediment delivery to reservoirs, locks, harbors and coasts. The models will be calibrated by historical sediment flux data, allowing them to predict how the fluvial systems will respond to plausible scenarios of future climatic and anthropogenic forcings. The Chattahoochee River in the southeastern U.S. is an ideal catchment to begin this work due to its recent urban development and sedimentation records near its outlet at Lake Seminole. We devise procedures for processing USGS NHDPlus HR datasets (Moore et al., 2019) at the HU4 and HU8 scale for compatibility with the fluvial process components of Landlab (Hobley et al., 2017; Barnhard et al., 2020). Using NLCD land cover products (Wickham et al., 2021), NRI erosion rate estimates (USDA, 2020), and historical streamflow and sediment load data (USGS, 2021), we will leverage Landlab to construct models of the Chattahoochee catchment and test their ability to replicate sedimentation records at Lake Seminole. Here, we present preliminary results obtained by applying these procedures to the Chestatee branch of the Chattahoochee River and its outlet at Lake Lanier in northern Georgia. Future versions of this workflow will use a range of projected 21st century precipitation and land cover changes to predict potential variations in future sediment generation, transport, and storage throughout the Chattahoochee watershed and other U.S. rivers.<br /> }}<br /> {{blank line template}}</div>

Sheehace https://csdms.colorado.edu/csdms_wiki/index.php?title=2022_CSDMS_meeting-033&diff=417536 2022-04-14T17:41:11Z

<p>Sheehace: </p> <hr /> <div>{{CSDMS meeting personal information template-2022<br /> |CSDMS meeting first name=Christopher<br /> |CSDMS meeting last name=Sheehan<br /> |CSDMS meeting institute=Boston College<br /> |CSDMS meeting city=Chestnut Hill<br /> |CSDMS meeting country=United States<br /> |CSDMS meeting state=Massachusetts<br /> |CSDMS meeting email address=sheehacz@bc.edu<br /> |CSDMS meeting phone=8569385707<br /> }}<br /> {{CSDMS meeting select clinics1 2022<br /> |CSDMS_meeting_select_clinics1_2022=3) The Art of Modeling<br /> }}<br /> {{CSDMS meeting select clinics2 2022<br /> |CSDMS_meeting_select_clinics2_2022=1) Modeling Water Movement and Reservoir Operations with mosartwmpy<br /> }}<br /> {{CSDMS meeting select clinics3 2022<br /> |CSDMS_meeting_select_clinics3_2022=1) Component Creation with Landlab<br /> }}<br /> {{CSDMS meeting abstract yes no 2022<br /> |CSDMS meeting abstract submit=Yes<br /> }}<br /> {{CSDMS meeting abstract title temp2022<br /> |CSDMS meeting abstract title=Modeling Future Sediment Transport Variations at a Watershed-Scale: A Preliminary Example from the Chattahoochee River.<br /> |Working_group_member_WG_FRG=Terrestrial Working Group, Hydrology Focus Research Group, Geodynamics Focus Research Group<br /> }}<br /> {{CSDMS meeting abstract template 2022<br /> |CSDMS meeting abstract=During the 21st century, anthropogenically modulated changes in climate and land cover will drive variations in sediment dynamics throughout rivers, reservoirs, and coastlines. These changes threaten the integrity of dams, levees, and riparian ecosystems, necessitating strategies to help mitigate their associated hazards and to detect and prevent adverse consequences of engineering solutions. In order to optimize these strategies, geomorphologists require calibrated, watershed-scale numerical simulations of sediment transport that can predict how fluvial networks will respond to different forcings throughout their catchments. <br /> We aim to develop watershed-scale landscape evolution models of several U.S. rivers to explore how climate and land-use change over the coming decades to centuries will influence sediment delivery to reservoirs, locks, harbors and coasts. The models will be calibrated by historical sediment flux data, allowing them to predict how the fluvial systems will respond to plausible scenarios of future climatic and anthropogenic forcings. The Chattahoochee River in the southeastern U.S. is an ideal catchment to begin this work due to its recent urban development and sedimentation records near its outlet at Lake Seminole. We devise procedures for processing USGS NHDPlus HR datasets (Moore et al., 2019) at the HU4 and HU8 scale for compatibility with the fluvial process components of Landlab (Hobley et al., 2017; Barnhard et al., 2020). Using NLCD land cover products (Wickham et al., 2021), NRI erosion rate estimates (USDA, 2020), and historical streamflow and sediment load data (USGS, 2021), we will leverage Landlab to construct models of the Chattahoochee catchment and test their ability to replicate sedimentation records at Lake Seminole. Here, we present preliminary results obtained by applying these procedures to the Chestatee branch of the Chattahoochee River and its outlet at Lake Lanier in northern Georgia. Future versions of this workflow will use a range of projected 21st century precipitation and land cover changes to predict potential variations in future sediment generation, transport, and storage throughout the Chattahoochee watershed and other U.S. rivers.<br /> }}<br /> {{blank line template}}</div>

Sheehace https://csdms.colorado.edu/csdms_wiki/index.php?title=2022_CSDMS_meeting-033&diff=401985 2022-02-08T21:58:01Z

<p>Sheehace: Created page with &quot;{{CSDMS meeting personal information template-2022 |CSDMS meeting first name=Christopher |CSDMS meeting last name=Sheehan |CSDMS meeting institute=Boston College |CSDMS meetin...&quot;</p> <hr /> <div>{{CSDMS meeting personal information template-2022<br /> |CSDMS meeting first name=Christopher<br /> |CSDMS meeting last name=Sheehan<br /> |CSDMS meeting institute=Boston College<br /> |CSDMS meeting city=Chestnut Hill<br /> |CSDMS meeting country=United States<br /> |CSDMS meeting state=Massachusetts<br /> |CSDMS meeting email address=sheehacz@bc.edu<br /> |CSDMS meeting phone=8569385707<br /> }}<br /> {{CSDMS meeting select clinics1 2022<br /> |CSDMS_meeting_select_clinics1_2022=3) The Art of Modeling<br /> }}<br /> {{CSDMS meeting select clinics2 2022<br /> |CSDMS_meeting_select_clinics2_2022=1) Modeling Water Movement and Reservoir Operations with mosartwmpy<br /> }}<br /> {{CSDMS meeting select clinics3 2022<br /> |CSDMS_meeting_select_clinics3_2022=1) Component Creation with Landlab<br /> }}<br /> {{CSDMS meeting abstract yes no 2022<br /> |CSDMS meeting abstract submit=Yes<br /> }}<br /> {{CSDMS meeting abstract title temp2022<br /> |CSDMS meeting abstract title=Modeling Future Sediment Transport Variations at a Watershed-Scale: A Preliminary Example from the Chattahoochee River.<br /> |Working_group_member_WG_FRG=Terrestrial Working Group, Hydrology Focus Research Group, Geodynamics Focus Research Group<br /> }}<br /> {{CSDMS meeting abstract template 2022<br /> |CSDMS meeting abstract=During the 21st century, anthropogenically modulated changes in climate and land cover will drive variations in sediment dynamics throughout rivers, reservoirs, and coastlines. These changes threaten the integrity of dams, levees, and riparian ecosystems, necessitating strategies to help mitigate their associated hazards and to detect and prevent adverse consequences of engineering solutions. In order to optimize these strategies, geomorphologists require calibrated, watershed-scale numerical simulations of sediment transport that can predict how fluvial networks will respond to different forcings throughout their catchments. <br /> We aim to develop watershed-scale landscape evolution models of several U.S. rivers to explore how climate and land-use change over the coming decades to centuries will influence sediment delivery to reservoirs, locks, harbors and coasts. The models will be calibrated by historical sediment flux data, allowing them to predict how the fluvial systems will respond to plausible scenarios of future climatic and anthropogenic forcings. Here, we build a preliminary, watershed-scale model of the Chattahoochee River in the southeastern U.S., an ideal catchment due to its recent urban development and sedimentation records near its outlet at Lake Seminole. We devise a procedure for processing USGS NHDPlus HR datasets at the HU4 and HU8 scale for compatibility with Landlab (Hobley et al., 2017; Barnhard et al., 2020), an open-source Python-based Earth surface modeling toolkit. Using NLCD land cover products and historical streamflow and sediment load data, we leverage Landlab’s sediment transport components to construct a model of the Chattahoochee catchment and test its ability to replicate sedimentation records at Lake Seminole. Future versions of this workflow will use a range of projected 21st century precipitation and land cover changes to predict potential variations in future sediment generation, transport, and storage throughout the Chattahoochee watershed and other U.S. rivers.<br /> }}<br /> {{blank line template}}</div>

Sheehace https://csdms.colorado.edu/csdms_wiki/index.php?title=User:Sheehace&diff=401981 2022-02-08T14:41:32Z

<p>Sheehace: </p> <hr /> <div>{{Signup information member<br /> |First name member=Christopher<br /> |Last name member=Sheehan<br /> |Picture member=Citations.jpeg<br /> |Institute member=Boston College<br /> |Department member=Earth and Environmental Sciences<br /> |Postal address 1 member=140 Commonwealth Avenue, Devlin Hall, Room 213<br /> |City member=Chestnut Hill<br /> |Postal code member=02467<br /> |Country member=United States<br /> |State member=Massachusetts<br /> |Confirm email member=sheehacz@bc.edu<br /> |Cell phone member=8569385707<br /> |Working group member=Terrestrial Working Group, Critical Zone Focus Research Group, Geodynamics Focus Research Group, Modeling Platform Interoperability Initiative, River Network Modeling Initiative<br /> |Emaillist group member=yes<br /> |Description of your CSDMS-related interests member=Earth Surface Processes Modeling<br /> |Memberagreement=I have read and agree to the Privacy Policy<br /> }}</div>

Sheehace https://csdms.colorado.edu/csdms_wiki/index.php?title=User:Sheehace&diff=296946 2020-08-12T02:24:08Z

<p>Sheehace: Created page with &quot;{{Signup information member |First name member=Chris |Last name member=Sheehan |Picture member=Citations.jpeg |Institute member=University of Cincinnati |City member=Cincinnat...&quot;</p> <hr /> <div>{{Signup information member<br /> |First name member=Chris<br /> |Last name member=Sheehan<br /> |Picture member=Citations.jpeg<br /> |Institute member=University of Cincinnati<br /> |City member=Cincinnati<br /> |Country member=United States<br /> |State member=Ohio<br /> |Confirm email member=sheehace24@gmail.com<br /> |Working group member=Terrestrial Working Group, Critical Zone Focus Research Group, Modeling Platform Interoperability Initiative, River Network Modeling Initiative<br /> |Emaillist group member=yes<br /> |Description of your CSDMS-related interests member=Earth Surface Processes Modeling<br /> |Memberagreement=I have read and agree to the Privacy Policy<br /> }}</div>

Sheehace https://csdms.colorado.edu/csdms_wiki/index.php?title=File:Citations.jpeg&diff=296945 2020-08-12T02:22:22Z

<p>Sheehace: </p> <hr /> <div></div>

Sheehace