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Session Proposal: River Deltas: Observations, Modeling, and Experimentation (AGU25)

EP029
River Deltas: Observations, Modeling, and Experimentation

Session ID#: 249343

Session Description:
River deltas are among the most valuable ecosystems on Earth, providing coastal protection against storm impacts and sequestering carbon. However, these coastal systems are threatened by climate change, land loss, and anthropogenic activities, with long-term sustainability dependent on sediment delivery, biogeochemical cycles, and human interactions. Understanding the dynamics of deltas is particularly challenging due to the multiscale interactions between vegetation, sediment transport, water flow, and biogeochemical cycling of carbon. Predicting how the processes will impact deltas requires cross-disciplinary research, including advances within hydrology, geomorphology, ecology, and biogeochemistry.  In this session, we encourage the presentation of research that fills knowledge gaps such as carbon budgets, water and sediment residence time, impacts of extreme events, and upscaling. We welcome abstracts that include remote sensing, numerical modeling, experimentation, and in-situ field measurements to better understand subaerial and subaqueous coastal processes and improve predictions of coastal resilience at landscape, regional, and global scales.
Co-Sponsor(s):
  • B - Biogeosciences
  • GC - Global Environmental Change
  • H - Hydrology
  • OS - Ocean Sciences
Index Terms:

0428 Carbon cycling [BIOGEOSCIENCES]
1630 Impacts of global change [GLOBAL CHANGE]
1890 Wetlands [HYDROLOGY]
4217 Coastal processes [OCEANOGRAPHY: GENERAL]
Primary Convener:  Alexandra Christensen, NASA Jet Propulsion Laboratory, Pasadena, United States
Conveners:  Yiyang Xu, Northeastern University, Boston, MA, United States, Marisa Nicole Repasch, University of New Mexico, Department of Earth & Planetary Sciences, Albuquerque, United States and Jaap Nienhuis, Utrecht University, Department of Physical Geography, Utrecht, Netherlands
 
Three ingredients for numerically efficient 2D river and delta morphodynamic modeling (1862218)
Giulio Mariotti, Louisiana State University, Oceanography & Coastal Sciences, Baton Rouge, LA, United States and Alberto Canestrelli, University of Florida, Civil and Coastal Engineering, Ft Walton Beach, United States
 
Discharge and suspended sediment concentration variations across subdeltas in the lower Mississippi River Delta highlight areas of land loss (1872733)
Sarah Brannum, Louisiana State University, Oceanography and Coastal Sciences, Baton Rouge, LA, United States, Kory M Konsoer, LSU, Department of Geography and Anthropology, Baton Rouge, LA, United States and Matthew R Hiatt, LSU, Oceanography & Coastal Sciences, Baton Rouge, United States
 
Estimating the Stability of Loops within the Sacramento San-Joaquin Delta (1875094)
John Shaw1, Nathan Moore1 and Piotr Szymczak2, (1)University of Arkansas, Fayetteville, AR, United States, (2)University of Warsaw, Faculty of Physics, Warsaw, Poland
 
Delta-X Predicts the Mississippi River Delta Will Succumb to Relative Sea Level Rise (Invited) (1879306)
Marc Simard1, Cathleen Jones2, Alexandra Christensen3, Ali Reza Payandeh4, Sergio Fagherazzi5, Robert Twilley6, Paola Passalacqua7, Edward Castaneda- Moya8, Andre Rovai9, Pradipta Biswas9, Michael P. Lamb10, Cedric G Fichot11 and Delta-X, (1)NASA Jet Propulsion Laboratory, Pasadena, CA, United States, (2)Jet Propulsion Laboratory, California Institute of Technology, Pasadena, United States, (3)Jet Propulsion Laboratory, Suborbital Radar Science and Engineering, Pasadena, United States, (4)NASA Jet Propulsion Laboratory, California Institute of Technology, Pasadena, United States, (5)Boston University, Department of Earth and Environment, Boston, United States, (6)Louisiana State University and Agricultural & Mechanical College, Baton Rouge, United States, (7)The University of Texas at Austin, Maseeh Department of Civil, Architectural and Environmental Engineering, Austin, United States, (8)Environmental Resources Project Supervisor Restoration & Enhancement Section (R&E), Department of Regulatory and Economic Resources Division of Environmental Resources Management, Miami, United States, (9)Louisiana State University, Department of Oceanography & Coastal Sciences, Baton Rouge, United States, (10)California Institute of Technology, Geological and Planetary Sciences, Pasadena, United States, (11)Boston University, Department of Earth and Environment, Boston, MA, United States
 
Modeling the Impact of Vegetation on Nonlinear Hydrodynamic Interactions in a River-dominated Delta (1892010)
Sajjad Feizabadi1, Matthew R Hiatt2 and Chunyan Li1, (1)Louisiana State University, Department of Oceanography and Coastal Sciences, Baton Rouge, LA, United States, (2)LSU, Oceanography & Coastal Sciences, Baton Rouge, United States
 
TOWARDS UNDERSTANDING OF DROUGHT EVENTS IN THE LOWER MISSISSIPPI RIVER USING STATISTICAL ANALYSIS AND NUMERICAL MODELING (1892839)
Ahmed Mohamed Khalifa, Ehab A Meselhe, Claire Kemick, Kelin Hu and Mead A Allison, Tulane University, New Orleans, United States
 
Spring Flood Sediment Dispersal Offshore of the Mississippi River Delta (1893480)
Faith Walton1, Samuel J Bentley1, Alba Romero-Martin2, Giancarlo Portocarrero3 and Emily Wei3, (1)Louisiana State University, Department of Geology and Geophysics, Baton Rouge, LA, United States, (2)University of Cadiz, Cadiz, Spain, (3)Louisiana State University, Department of Geology and Geophysics, Baton Rouge, United States
 
Improving Wetland Modeling with Multi-Sensor Remote Sensing: Lessons from the Mississippi Delta (1896647)
Ali Reza Payandeh1, Marc Simard2, Cathleen Jones2, Alexandra Christensen2, Michael W Denbina3 and Daniel Jensen1, (1)NASA Jet Propulsion Laboratory, California Institute of Technology, Pasadena, United States, (2)Jet Propulsion Laboratory, California Institute of Technology, Pasadena, United States, (3)NASA Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, United States
 
Decoding Millennial Delta Dynamics: Multi-Borehole Chronostratigraphy of the Han River Delta, Southeast China (1904853)
Ping Lai and Zhongping Lai, Shantou University, Shantou, China
 
Effects of Multiple Sediment Sources on Rift Basin Stratigraphy: 3D tank Experiments. (1907538)
Sojung Jung, Yonsei University, Seoul, Korea, Republic of (South) and Wonsuck Kim, Yonsei University, Department of Earth System Sciences, Seoul, Korea, Republic of (South)
 
Managed Realignment and its Influence on Estuarine Salt Intrusion (1908062)
Jesse Bootsma1, Bas Borsje1, Rutger Siemes1,2, Sem Geerts1, Daphne Van der Wal3,4 and Suzanne J. M. H. Hulscher1, (1)University of Twente, Marine and Fluvial Systems, Faculty of Engineering Technology, Enschede, Netherlands, (2)HKV Lijn in Water, Utrecht, Netherlands, (3)University of Twente, Water Resources, Faculty of Geo-Information Science and Earth Observation, Enschede, Netherlands, (4)Royal Netherlands Institute for Sea Research, Department of Estuarine and Delta Systems, Yerseke, Netherlands
 
River deltas get muddier as they grow (1909149)
Minsik Kim1, Jaap Nienhuis2 and Wonsuck Kim1, (1)Yonsei University, Department of Earth System Sciences, Seoul, Korea, Republic of (South), (2)Utrecht University, Department of Physical Geography, Utrecht, Netherlands
 
Determining nutrient flux in deltas across using satellite imagery at different spatial resolutions. (1911166)
Deon Hanley Knights, Vassar College, Geology and Geography, Poughkeepsie, NY, United States, Aneesh Koppolu, Vassar College, Poughkeepsie, United States and Jon Schwenk, University of Minnesota Twin Cities, Department of Civil, Environmental, and Geo- Engineering, Saint Anthony Falls Laboratory, Minneapolis, United States
 
A Bayesian approach for extracting delta surface water masks and delta network topology (1917299)
Max Sasha Daniller-Varghese, University of Texas at Austin, Austin, TX, United States and Paola Passalacqua, The University of Texas at Austin, Maseeh Department of Civil, Architectural and Environmental Engineering, Austin, United States
 
Recent Mississippi River Drought and Saltwater Wedge Intrusion in Historical Context (1917834)
Claire Kemick1, Ehab A Meselhe1, Ahmed Mohamed Khalifa1, Mead A Allison2 and Kelin Hu1, (1)Tulane University, New Orleans, United States, (2)Tulane University of Louisiana, New Orleans, United States
 
Investigating Ecogeomorphic Feedback in the Mississippi River Delta Using Coupled Hydrodynamic and Vegetation Models: Implications for Restoration and Landscape Stability (1918324)
Sherif Ahmed1, Ehab A Meselhe2, Kelin Hu2, Ahmed Mohamed Khalifa2 and Mead A Allison1, (1)Tulane University of Louisiana, New Orleans, United States, (2)Tulane University, New Orleans, United States
 
Assessing the Influence of Spatially Heterogeneous Shallow Compaction on Delta Morphodynamics (1925267)
Zhilin Shi, Texas A&M University College Station, Department of Geography, College Station, TX, United States and Andrew J Moodie, Texas A&M University, Department of Geography, College Station, United States
 
Morphodynamic Variability Between Identical Delta Experiments (1925536)
Ash Keenan, Pennsylvania State University University Park, State College, PA, UNITED STATES and Anastasia Piliouras, Pennsylvania State University University Park, Geoscience, State College, United States
 
Hydrodynamics and Sediment Dynamics of East Bay of the Mississippi River Delta, Louisiana, USA (1931353)
Jacob Reinhardt, Louisiana State University, Baton Rouge, LA, United States and Kehui Xu, Louisiana State University, Department of Oceanography and Coastal Sciences, Baton Rouge, LA, United States
 
Multi-sensor Assessment of Suspended Particulate Matter in Lake Pontchartrain Through Regional Ocean Color Algorithm Development (1932662)
Md Nabid Hashar, Louisiana State University, Department of Oceanography and Coastal Sciences, Baton Rouge, United States, Eurico J. D'Sa, Louisiana State University, Department of Oceanography and Coastal Sciences, Baton Rouge, LA, United States and Bingqing Liu, University of Louisiana at Lafayette, School of Geosciences, Lafayette, United States
 
Plume Sedimentation on the Mississippi River Delta Front: A Preliminary Modeling Study (1936625)
Rongqing Du1, Kehui Xu2, Z. George Xue2, Yanda Ou3, Ehab A Meselhe4, Kelin Hu4, Dr. Courtney Kay Harris, Ph.D.5 and Jongwi Chang6, (1)Louisiana State University, Oceanography and Coastal Sciences, Baton Rouge, LA, United States, (2)Louisiana State University, Department of Oceanography and Coastal Sciences, Baton Rouge, LA, United States, (3)Louisiana State University, Oceanography and Coastal Sciences, Baton Rouge, United States, (4)Tulane University, New Orleans, United States, (5)Virginia Institute of Marine Science, William & Mary, Gloucester Point, VA, United States, (6)William & Mary, Virginia Institute of Marine Science, Gloucester Point, United States
 
Assessing a sediment budget for an interdistributary bay in the Mississippi River Delta: East Bay, Louisiana (1950137)
Giancarlo Portocarrero1, Samuel J Bentley2, Emily Wei1, Nathan S Figueredo2 and Faith Walton2, (1)Louisiana State University, Department of Geology and Geophysics, Baton Rouge, United States, (2)Louisiana State University, Department of Geology and Geophysics, Baton Rouge, LA, United States
 
Hurricane Francine (2024) Across the Mississippi Delta: Linking Offshore Waves to Estuarine Response with Multiscale Coupled Ocean–Wave–Hydrology Models (1951404)
Muhamad Farid Geonova1, Z. George Xue1, Yanda Ou2, John C Warner3, Maitane Olabarrieta4, Matthew R Hiatt5, Jesbin George6, Jacob Davis7, Jim Thomson8, Isabel Houghton9, Martha Schonau10 and Luca Raffaele Centurioni11, (1)Louisiana State University, Department of Oceanography and Coastal Sciences, Baton Rouge, LA, United States, (2)Louisiana State University, Oceanography and Coastal Sciences, Baton Rouge, United States, (3)U.S. Geological Survey, Falmouth, United States, (4)University of Florida, Department of Civil and Coastal Engineering, Gainesville, FL, United States, (5)LSU, Oceanography & Coastal Sciences, Baton Rouge, United States, (6)Louisiana State University, Oceanography & Coastal Sciences, Baton Rouge, LA, United States, (7)Applied Physics Laboratory, University of Washington, Air-Sea Interaction and Remote Sensing, Seattle, United States, (8)University of Washington, Seattle, United States, (9)Sofar Ocean, San Francisco, United States, (10)University of California San Diego, La Jolla, United States, (11)Scripps Institution of Oceanography, University of California San Diego, La Jolla, United States
 
Sediment Dynamics and Geohazards in the Mississippi River-dominated Subaqueous Delta (1951662)
Nathan S Figueredo1, Samuel J Bentley1, Emily Wei2, Kehui Xu3, Faith Walton1, Giancarlo Portocarrero2, Jeffrey Duxbury4, Thomas Magsino5, Jameson Woodall6 and D'Metrie King7, (1)Louisiana State University, Department of Geology and Geophysics, Baton Rouge, LA, United States, (2)Louisiana State University, Department of Geology and Geophysics, Baton Rouge, United States, (3)Louisiana State University, Department of Oceanography and Coastal Sciences, Baton Rouge, LA, United States, (4)Louisiana State University, Baton Rouge, LA, United States, (5)Louisiana State University, Geology, Baton Rouge, United States, (6)Louisiana State University, College of the Coast and Environment, Baton Rouge, LA, United States, (7)Southern University and A & M College, Baton Rouge, United States
 
Sediment Transport and Accumulation in the Anthropocene offshore of Pass a Loutre, Mississippi River Delta, USA (1953388)
Jameson Woodall1, D'Metrie King2, Samuel J Bentley3, Faith Walton3 and Emily Wei4, (1)Louisiana State University, College of the Coast and Environment, Baton Rouge, LA, United States, (2)Southern University and A & M College, Baton Rouge, United States, (3)Louisiana State University, Department of Geology and Geophysics, Baton Rouge, LA, United States, (4)Louisiana State University, Department of Geology and Geophysics, Baton Rouge, United States
 
Quantifying Soil Processes and Topographic Succession Responsible for Carbon Accumulation within the Wax Lake Delta, Louisiana (1953677)
August Aalto and Dan Breecker, The University of Texas at Austin, Jackson School of Geosciences, Department of Earth and Planetary Sciences, Austin, United States
 
Does bottom trawling trigger sediment gravity flows on the Mississippi River Delta Front? (1956413)
Carson Miller, Naval Research Lab Stennis Space Center, Stennis Space Center, United States, Maureen A L Walton, US Naval Research Laboratory, Ocean Sciences Divison, Washington, DC, United States and Jeffrey Obelcz, US Naval Research Laboratory, Ocean Sciences Division, Washington, DC, United States
 
Exploring Controls on Backwater-Scaled Delta Avulsions: Model Experiments Illuminate Conditions that Favor Each of Two Alternative Mechanisms, and Interactions Between Them (1971139)
Ningjie Hu, Duke University, Durham, NC, United States, Allen Bradshaw Murray, Duke University, Division of Earth and Climate Sciences, Nicholas School of the Environment, Durham, United States and Katherine M Ratliff, National Homeland Security Research Center, U.S. Environmental Protection Agency, Durham, United States
 
Determining vegetation establishment thresholds with custom-built sensors (1974254)
Madeline Foster-Martinez, University of New Orleans, Earth and Environmental Sciences and Civil and Environmental Engineering, New Orleans, LA, United States, Abigail Eckland, University of New Orleans, New Orleans, United States, Jenneke Visser, University of Louisiana at Lafayette, Lafayette, LA, United States and Vitalii Sheremet, WHOI, Woods Hole, RI, United States
 
Cancellation of the Mid-Barataria Sediment Diversion Leaves Deteriorating Lower Mississippi Delta Wetlands with a Dangerous Sediment Deficit (Invited) (1982296)
Molly Keogh, Oregon State University, College of Earth, Ocean, and Atmospheric Sciences, Corvallis, OR, United States, Torbjorn E Tornqvist, Tulane University, Department of Earth and Environmental Sciences, New Orleans, United States and Alexander Kolker, LUMCON, Chauvin, LA, United States
 
Improving Representations of River Delta Processes in Earth System Models via a New Bifurcation Scheme (1982398)
Tian Zhou, Pacific Northwest National Laboratory, Richland, WA, United States and Chang Liao, Pacific Northwest National Laboratory, Richland, United States
 
The Evolution of the World’s Major Rivers and Deltas: How AI Can Help Us to Forecast Their Future Changes (1982823)
Paul Liu, North Carolina State University Raleigh, Marine, Earth and Atmospheric Science, Raleigh, United States and Muhammad Risha, North Carolina State University Raleigh, Marine, Earth and Atmospheric Science, Raleigh, NC, United States
 
Sediment Instability on the Mississippi River Delta Front: Ranges of Mudflow Motion from Storms to Quiescent Periods (1985156)
Kelli Moran, U.S. Geological Survey - Woods Hole Coastal and Marine Science Center, Woods Hole, United States, Jason D Chaytor, USGS Coastal and Marine Science Center Woods Hole, Woods Hole, MA, United States, Wayne E. Baldwin, USGS, Coastal and Marine Science Center Woods Hole, Woods Hole, United States and Jason Chaytor
 
Subsidence Outpaces Sediment Supply: Accelerated Wetland Loss in the Lower Mississippi Delta (1989087)
Fnu Gulfsha, Chaudhary Charan Singh University Meerut, Meerut, India
 
Relating vegetation patterns to salinity and hydrodynamics in the lower Mississippi River Delta (1994767)
Tracy E Quirk, Organization Not Listed, Washington, DC, United States
 
Geomorphic and Anthropogenic Controls on Global Delta Elevation (1997344)
Zainescu Florin1,2, Florin Miron3 and Edward Anthony2, (1)University of Bucharest, ICUB, Sfântu Gheorghe Marine and Fluvial Research Station, Bucharest, Romania, (2)Aix-Marseille University, CEREGE, Aix en Provence, France, (3)University of Bucharest, Faculty of Geography, Bucharest, Romania
 
Effects of Shallow Benches on the Hydrodynamics at Channel bifurcations in the Mississippi River Delta (2001388)
Hemanta Pokharel1, Matthew R Hiatt2,3, Kory M Konsoer1,3 and Muriel Zazie Madeleine Brückner4,5, (1)LSU, Department of Geography and Anthropology, Baton Rouge, LA, United States, (2)LSU, Oceanography & Coastal Sciences, Baton Rouge, United States, (3)LSU Coastal Studies Institute, Baton Rouge, LA, United States, (4)LSU, Civil and Environmental Engineering, Baton Rouge, LA, United States, (5)LSU Center for Computation and Technology, Baton Rouge, LA, United States
 
Integrated Hyperspectral Imaging and Non-Destructive Techniques for Surface and Subaqueous Characterization of the Birdsfoot Delta. (2002602)
Rakesh Salunke1, Rahul Biswas2, Md Fahimuzzaman Khan2, Audrika Nahian3, Richa Pokhrel2 and Sadik Khan4, (1)Jackson State University, Civil and Environmental Engineering, Jackson, MS, United States, (2)Jackson State University, Civil and Environmental Engineering, Jackson, United States, (3)Jackson State University, Department of Civil and Environmental Engineering, Jackson, MS, United States, (4)Jackson State University, Department of Civil and Environmental Engineering, Jackson, United States
 
Estimation of sediment trapping efficiency of the Wax Lake Delta, Louisiana, using a high-resolution river delta morphodynamic model (2005182)
Dongchen Wang, California Institute of Technology, Pasadena, CA, United States, Hussain Alqattan, California Institute of Technology, Geological and Planetary Sciences, Pasadena, CA, United States and Michael P. Lamb, California Institute of Technology, Geological and Planetary Sciences, Pasadena, United States
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