@article{6df84fbab92b4be0b14386e0bfe9a949,
title = "Upstream Propagation of Sea-Level Signals in Fluvio-Deltaic Environments: Time-Lags and the Dynamics of the Fluvial Surface",
abstract = "Stratigraphic interpretation generally relies upon the assumption that the fluvio-deltaic surface responds uniformly to sea-level changes; however, recent theoretical work suggests that changes in its relief and concavity can influence the propagation of sea-level information upstream and result in geologically long-lived lags in the system response. We test this theoretical result using measurements from a experimental delta subject to high and low magnitude sea-level oscillations. In both cases, changes in relief and curvature of the fluvio-deltaic profile result in the proximal portion of the profile being out of phase with respect to sea-level cycles, whereas the nearshore regions remain in phase. These results underscore the importance of delayed response to sea-level variations in the upstream portion of river deltas, often resulting in net erosion during sea-level rise and potentially complicating the reconstruction of paleo sea-level from deltaic deposits.",
keywords = "fluvial delta, fluvial surface concavity, fluvial surface dynamics, sea-level cycles, shoreline",
author = "M. Kollegger and J. Lorenzo-Trueba and Fernandes, {A. M.} and A. Singh and A. Abeyta",
note = "Funding Information: This work was supported by NSF‐EAR Awards 1854371, 2029803 & 1854452. We thank Elisabeth Steel and Eric Barefoot for their detailed reviews, which helped to improve the quality of the manuscript. We also thank the Tulane Sediment Dynamics and Stratigraphy group for the collection and archival of data. MK would like to thank all members of the MSU Coastal Dynamics Lab for their feedback from the start of this project. Funding Information: This work was supported by NSF-EAR Awards 1854371, 2029803 & 1854452. We thank Elisabeth Steel and Eric Barefoot for their detailed reviews, which helped to improve the quality of the manuscript. We also thank the Tulane Sediment Dynamics and Stratigraphy group for the collection and archival of data. MK would like to thank all members of the MSU Coastal Dynamics Lab for their feedback from the start of this project. Publisher Copyright: {\textcopyright} 2022. American Geophysical Union. All Rights Reserved.",
year = "2022",
month = apr,
day = "28",
doi = "10.1029/2022GL097956",
language = "English",
volume = "49",
journal = "Geophysical Research Letters",
issn = "0094-8276",
publisher = "Wiley-Blackwell",
number = "8",
}