The DAS RCN webinar "Monitoring water column height, flow velocity and sediments in a shallow marine setting using DAS" was held on November 30, 2023. Thank you again to our presenter, Menno Buisman, at TU Delft.

Abstract:
Coastal regions such as estuaries and river deltas are often susceptible to large bathymetric changes due to sediment transport. Monitoring the water depth in these areas can be challenging due to the size, shipping traffic, mixing of water layers, and the high dynamic environment. Nevertheless, there is a need for high accuracy depth measurements, to enable marine traffic, for water management, and to understand sediment transport. Even though the importance of coastal regions only increases, due to increasing trade and population growth in or near these regions, accurate shallow marine depth measurements remain challenging. We show how distributed acoustic sensing can be used to measure the water level, flow velocity, and watersediment interface based on frequency and amplitude content. We show this using both vertical fibers, coiled around a mantle on a pole, and horizontal fibres, spanning between two poles.

Videos in the DAS RCN Webinar series are available here:    • Distributed Acoustic Sensing Research...  

If you are interested in joining the DAS RCN Marine Geology/Geophysics Working Group or presenting at a future webinar, please get in touch with Hannah Glover (Oregon State University), Meagan Wengrove (Oregon State University), or Madison Smith (WHOI) [email protected], [email protected], or [email protected].