A5066070325- Oceanographic and Atmospheric Processes
- Geochemistry and Elemental Analysis
- Methane Hydrates and Related Phenomena
- Marine and coastal ecosystems
- Geochemistry and Geologic Mapping
- Marine Biology and Ecology Research
- Ocean Waves and Remote Sensing
- Atmospheric and Environmental Gas Dynamics
- Underwater Acoustics Research
- Geological formations and processes
- Hydrocarbon exploration and reservoir analysis
- Geology and Paleoclimatology Research
- Minerals Flotation and Separation Techniques
- Paleontology and Stratigraphy of Fossils
- Microbial Community Ecology and Physiology
- Mining Techniques and Economics
- Geological and Geochemical Analysis
- Coastal and Marine Dynamics
- Advanced Battery Technologies Research
- Fault Detection and Control Systems
- Marine and fisheries research
- Marine and Offshore Engineering Studies
- High-pressure geophysics and materials
- Underwater Vehicles and Communication Systems
- Ocean Acidification Effects and Responses
Royal Netherlands Institute for Sea Research
2019-2022
Utrecht University
2019-2022
Nepheloid layers with elevated concentrations of suspended particulate matter (SPM) are found throughout the world's oceans. They generated by both natural processes, involving resuspension seabed sediment bottom currents, and anthropogenic due to trawling, dredging in future potentially deep-sea mining. These nepheloid represent pathways lateral SPM transport, including lithogenic biogenic sediment, organic matter, (trace) metals, pollutants plastics. For assessment dispersion these...
Predictability of the dispersion 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 numerical models. Here we report plume experiment carried out in German license area exploration polymetallic nodules northeastern tropical Pacific Ocean 4,200 m water depth. The small-scale dredge April 2019 was investigated numerically employing transport module...
In this study different experimental designs for monitoring of sediment plumes produced by deep-sea mining are presented. Plumes stirred up from the seabed machines considered to represent a major environmental pressure which may extend far beyond actual area. Two industry field tests with scaled vehicle Apollo II Royal IHC conducted in relatively shallow setting offshore southern Spain provided valuable insights anticipated nodule activities deep Pacific. Although were performed only 300 m...
The abyssal seafloor in the Clarion-Clipperton Zone (CCZ) NE Pacific hosts largest abundance of polymetallic nodules deep sea and is being targeted as an area for potential deep-sea mining. During nodule mining, sediment will be brought into suspension by mining equipment, resulting formation plumes, which affect benthic pelagic life not naturally adapted to any major transport deposition events. To improve our understanding plume dispersion support development models this specific area, we...
Abstract. Hydrothermal vent fields found at mid-ocean ridges emit hydrothermal fluids that disperse as neutrally buoyant plumes. From these seafloor massive sulfides (SMS) deposits are formed, which being explored possible new mining sites for (trace) metals and rare earth elements (REEs). It has been suggested during activities large amounts of suspended matter will appear in the water column due to excavation processes discharge waste from surface vessel. Understanding how plumes can be...
The mining of poly metallic nodules from the seafloor comprises excavation or pickup, vertical transport to sea surface and processing shipping material afterward. Polymetallic deep-sea bed Clarion Clipperton Zone (CCZ), a prospective area, are typically abundant at depths around 5000m under ambient pressures 500bar. particle size distribution mixture leaving Vertical Transport System (VTS) is key design parameter for ore equipment, hence it importance know how will be degraded fragmented...
Abstract. Using observational data, satellite altimeters, and reanalysis model products, we have investigated eddy-induced seawater anomalies heat salt transport in the northeastern tropical Pacific Ocean. An eddy detection algorithm (EDA) was used to identify formation at Mexican Tehuantepec Gulf (TT) July 2018 during an unusually strong summer wind event. The separated from coast with a mean translation velocity of 11 cm s−1 radius 115 km traveled 2050–2400 westwards off Central American...
Abstract. Hydrothermal vent fields found at mid-ocean ridges emit hydrothermal fluids which disperse as neutrally buoyant plumes. From these seafloor massive sulfides (SMS) deposits are formed being explored possible new mining sites for (trace) metals and rare earth elements (REE). It has been suggested that during activities large amounts of suspended matter will appear in the water column due to excavation processes, discharge waste from surface vessel. Understanding how natural plumes...
Abstract. Using observational data, satellite altimeters, and reanalysis model products, we have investigated eddy-induced seawater anomalies heat/salt transport in the northeastern tropical Pacific Ocean. An eddy detection algorithm (EDA) was used to identify formation at Mexican Tehuantepec Gulf (TT) July 2018 during an unusually strong summer wind event. The separated from coast with a mean translation velocity of 11 cm s-1 radius 115 km travelled 2050–2400 westwards off Central American...
<p>Prediction of the dispersion sediment plumes induced by potential mining activities is still very limited due to operational limitations on <em>in-situ</em> observations required for a thorough validation and calibration numerical models. Here we report plume experiment carried out in German License Area exploration polymetallic nodules northeastern tropical Pacific Ocean. The dredging April 2019 was investigated employing hydrodynamic...
<p>Throughout the world’s oceans, water layers with increased suspended particulate matter concentrations, so called nepheloid layers, play an important role in lateral transport of sediment, organic and pollutants. Nepheloid are persistent features submarine canyons, where they formed under influence energetic hydrodynamics. To evaluate their importance it is crucial to properly quantify amount type material that transported. However, interpretation turbidity...
<p>Concerns about future access to strategic raw materials for the high-tech industry have led a renewed interest in mining of mineral resources from deep-sea as potential alternative land-based mining. Polymetallic nodules, especially abundant eastern equatorial Pacific Ocean water depths 4000-6000 m, are likely target However, many questions exist environmental sustainability mining, it would involve removal hard substrate, disturbance surface sediment layer and dispersion...