Onderzoeksoutput

Welkom op het expertplatform!

Dit platform verschaft informatie en kennis omtrent de WL expertisedomeinen 'hydraulica en sediment', 'havens en waterwegen', 'waterbouwkundige constructies', 'waterbeheer' en 'kustbescherming' - gaande van WL medewerkers met hun expertise, het curriculum van deze instelling, tot publicaties, projecten, data (op termijn) en evenementen waarin het WL betrokken is.

Het WL onderschrijft het belang van "open access" voor de ontsluiting van haar onderzoeksresultaten. Lees er meer over in ons openaccessbeleid.

log in

• 
  People
• 
  Curriculum
• 
  Projects
• 
  Data sets
• 
  Publications
• 
  Events

[ meld een fout in dit record ]

mandje (0): toevoegen | toon

---

Numerical simulation of deep-sea sediment transport induced by a dredge experiment in the northeastern Pacific Ocean Purkiani, K.; Gillard, B.; Paul, A.; Haeckel, M.; Haalboom, S.; Greinert, J.; de Stigter, H.; Hollstein, M.; Baeye, M.; Vink, A.; Thomsen, L.; Schulz, M. (2021). Numerical simulation of deep-sea sediment transport induced by a dredge experiment in the northeastern Pacific Ocean. Front. Mar. Sci. 8: 719463. https://dx.doi.org/10.3389/fmars.2021.719463 Bijhorende data: https://doi.pangaea.de/10.1594/PANGAEA.934035 In: Frontiers in Marine Science. Frontiers Media: Lausanne. e-ISSN 2296-7745

---

Beschikbaar in	Auteurs
VLIZ: Open access 377028 [ download pdf ]

---

Trefwoord

Marien/Kust

Author keywords

dredge experiment; MITgcm; deep-sea mining; redeposition; sensor array; deep-sea sediment transport

---

Auteurs		Top
Purkiani, K. Gillard, B. Paul, A. Haeckel, M.	Haalboom, S. Greinert, J. de Stigter, H. Hollstein, M.	Baeye, M. Vink, A. Thomsen, L. Schulz, M.

---

Abstract

Predictability of the dispersion of sediment plumes induced by potential deep-sea mining activities is still very limited due to operational limitations on in-situ observations required for a thorough validation and calibration of numerical models. Here we report on a plume dispersion experiment carried out in the German license area for the exploration of polymetallic nodules in the northeastern tropical Pacific Ocean in 4,200 m water depth. The dispersion of a sediment plume induced by a small-scale dredge experiment in April 2019 was investigated numerically by employing a sediment transport module coupled to a high-resolution hydrodynamic regional ocean model. Various aspects including sediment characteristics and ocean hydrodynamics were examined to obtain the best statistical agreement between sensor-based observations and model results. Results show that the model is capable of reproducing suspended sediment concentration and redeposition patterns observed during the dredge experiment. Due to a strong southward current during the dredging, the model predicts no sediment deposition and plume dispersion north of the dredging tracks. The sediment redeposition thickness reaches up to 9 mm directly next to the dredging tracks and 0.07 mm in about 320 m away from the dredging center. The model results suggest that seabed topography and variable sediment release heights above the seafloor cause significant changes especially for the low sedimentation pattern in the far-field area. Near-bottom mixing is expected to strongly influence vertical transport of suspended sediment.

---

Alle informatie in het Integrated Marine Information System (IMIS) valt onder het VLIZ Privacy beleid

Top | Auteurs

IMIS is ontwikkeld en wordt gehost door het VLIZ.