PANGAEA_995605 Velocity fields of seagrass mimics under unidirectional flow Sarma, Barnapratim; Peetz, Cara; Visscher, Jan; Paul, Maike Velocity fields of seagrass mimics under unidirectional flow 2026-07-14 PANGAEA Dataset https://doi.pangaea.de/10.1594/PANGAEA.995605 Investigator Barnapratim Sarma sarma@lufi.uni-hannover.de Earth Science File content netCDF file netCDF file (File Size) netCDF file (Media Type) netCDF file (MD5 Hash) Documentation file geoscientificInformation Acoustic Doppler velocimetry Exp_flow_seagrass Laboratory experiment Particle Image Velocimetry 2023-09-04 2023-09-08 Complete sea4soCiety DAM CDRmare - sea4soCiety: Searching for solutions for Carbon-sequestration in coastal ecosystems CDRmare Research Mission of the German Marine Research Alliance (DAM): Marine carbon sinks in decarbonisation pathways unrestricted CC-BY-4.0: Creative Commons Attribution 4.0 International English PANGAEA Data Publisher for Earth & Environmental Science https://www.pangaea.de/ Data Center Contact Michael Diepenbroek info@pangaea.de

Leobener Str.

Bremen Bremen 28359 Germany online 6 data points text/tab-separated-values Goring, Derek G; Nikora, Vladimir I (2002): Despiking Acoustic Doppler Velocimeter Data. Journal of Hydraulic Engineering (ASCE), 128(1), 117-126, https://doi.org/10.1061/(ASCE)0733-9429(2002)128:1(117) Raffel, Markus; Willert, Christian E; Scarano, Fulvio; Kähler, Christian J; Wereley, Steve T; Kompenhans, Jürgen (2018): Particle Image Velocimetry. Springer International Publishing, Cham, https://doi.org/10.1007/978-3-319-68852-7 Sarma, Barnapratim (2026): Detailed method description of experiment investigating the effect of seagrass mimics on on velocity fields. https://download.pangaea.de/reference/140368/attachments/D995605_method_descr.pdf

Seagrass mimics were used to assess the modifications imparted by the mimics on the flow field. For this purpose, laboratory experiments were carried out in September 2023 at the Ludwig-Franzius-Institute of Hydraulic, Estuarine and Coastal Engineering, Leibniz University Hannover, Germany. The seagrass mimics were fabricated from low-density polyethylene (LDPE) with a density of 920 kg/m^3 and a modulus of elasticity of 2.64 ×10^8 N/m^2. Four tropical seagrass species (Enhalus acoroides, Thalassia hemprichii, Halodule uninervis, Halophila ovalis ssp. bullosa) were mimiced by different modelling parameters (see Table 1 in additional metadata file). The full canopy mimic model covered a planform area of 2m × 1m. The seagrass mimic canopy was exposed to unidirectional flow in a recirculating flume with a straight channel of 17.6 m length and 2 m width. The experiments were conducted under four depth-averaged velocities at a constant water depth of 40 cm: 0.13 m/s, 0.21 m/s, 0.28 m/s, 0.35 m/s. Instantaneous velocity measurements were acquired using a stereoscopic Particle Image Velocimetry (PIV) system and a four-beam Acoustic Doppler Velocimeter (ADV). The PIV system measured the three velocity components, namely streamwise, lateral, and vertical velocity components, in a two-dimensional plane in the wake of the canopy centreline (2D3C), while the ADV system measured the same three velocity components at discrete points along vertical profiles at selected streamwise positions relative to the trailing edge of the canopy. The detailed experimental setup, used methods, and data processing are described in the additional metadata file. ** For all details see the full metadata description at "https://doi.pangaea.de/10.1594/PANGAEA.995605"!

https://cdrmare.de/en/ CDRmare https://doi.org/10.1007/978-3-319-68852-7 Particle Image Velocimetry https://doi.org/10.1061/(ASCE)0733-9429(2002)128:1(117) Despiking Acoustic Doppler Velocimeter Data https://doi.org/10.5065/D6H70CW6 netCDF file https://doi.org/10.5065/D6H70CW6 netCDF file (File Size) https://doi.org/10.5065/D6H70CW6 netCDF file (MD5 Hash) https://doi.org/10.5065/D6H70CW6 netCDF file (Media Type) https://sea4society.cdrmare.de/en/ sea4soCiety DIF 9.4 2026-07-14 2026-07-14