Results 71 to 80 of about 398 (170)

An in situ study of abyssal turbidity-current sediment plumes generated by a deep seabed polymetallic nodule mining preprototype collector vehicle. [PDF]

Sci Adv, 2022
Muñoz-Royo C, Ouillon R, El Mousadik S, Alford MH, Peacock T.   +4 more
europepmc   +1 more source

Abyssal fauna of polymetallic nodule exploration areas, eastern Clarion-Clipperton Zone, central Pacific Ocean: Amphinomidae and Euphrosinidae (Annelida, Amphinomida). [PDF]

Zookeys, 2022
Neal L, Wiklund H, Gunton LM, Rabone M, Bribiesca-Contreras G, Dahlgren TG, Glover AG.   +6 more
europepmc   +1 more source

Optimization of Geometrical Parameters of Coandă-Effect-Based Polymetallic Nodule Collection Device

Shanghai Jiaotong Daxue xuebao
The collection of seabed ore particles is a core technology of exploiting deep sea mineral resources, with wall-attached jet collection technology based on Coandă-effect being considered as a nodule collection method with engineering application ...
ZHANG Baiyuan, ZHAO Guocheng, XIAO Longfei
doaj   +1 more source

Diversity and connectivity of bacterial communities in polymetallic nodule-rich abyssal plains (Eastern Tropical Pacific)

Frontiers in Marine Science
Polymetallic nodules of the abyssal seafloor are considered potential resources of nickel, cobalt, copper, as well as rare earth elements. The Clarion-Clipperton Fracture Zone (CCZ) hosts potential nodule mining sites licensed to several contractors for ...
Batuhan Cagri Yapan, Batuhan Cagri Yapan, Felix Janssen, Felix Janssen, Antje Boetius, Antje Boetius, Antje Boetius, Matthias Haeckel, Massimiliano Molari, Massimiliano Molari   +9 more
doaj   +1 more source

Numerical Study on Collection and Environmental Disturbance Characteristics of Different Nodule Collecting Models

Shanghai Jiaotong Daxue xuebao
It is a significant technical challenge to exploit deep-sea polymetallic nodules with high efficiency and low disturbance. The mechanical behavior of seabed nodule collecting is very complicated, which is a multi-physical coupling process involving three-
LI Yuyao, ZHAO Guocheng, XIAO Longfei
doaj   +1 more source

Selective extraction of metals from polymetallic nodules of Central Indian Ocean Basin through chemical partitioning

Discover Geoscience
Polymetallic nodules occurring on the seabeds of the world’s oceans contain economically important metals such as Cu, Co, Ni, Pb, and Zn, primarily in the form of oxides and hydroxides. These nodules mainly consist of two intimately mixed mineral phases:
Saurabh Kumar Barman, Sanjay Kumar Tiwari, Manvendra Singh Chauhan, Vijayendra Pratap Dheeraj   +3 more
doaj   +1 more source

Sediment Disturbance and Near-Field Dispersion Characteristics of a Coandă-Effect Collector

Journal of Marine Science and Engineering
Balancing high collection efficiency and controlled sediment plume dispersion is a core challenge in deep-sea polymetallic nodule harvesting technology. This work investigates a Coandă-effect collector using two numerical frameworks: a CFD-DEM model for ...
Yan Li, Wenjie Luo, Qiuhui Shan
doaj   +1 more source

Cross-Expedition Domain Adaptation for Polymetallic Nodule Detection: A Multi-Model Pseudo-Labelling Approach

Journal of Marine Science and Engineering
The automated detection of deep-sea polymetallic nodules is critical for processing large volumes of benthic imagery. However, its scalability faces challenges from cross-expedition covariate shifts, such as changes in lighting, altitude, and camera ...
Gabriel Loureiro, André Dias, Eduardo Silva   +2 more
doaj   +1 more source

In-situ environmental monitoring for deep-sea polymetallic nodule mining: Status, challenges, and future directions

International Journal of Mining Science and Technology
The prospective mining of deep-sea polymetallic nodules, a source of strategic critical metals, could cause irreversible damage to fragile deep-sea ecosystems, sparking global scientific, political, and ethical controversies. Consequently, establishing a
Xiang Chen, Zhihan Fan, Yonggang Jia, Zhicheng Zhang, Xiao Wang, Xu Guo, Xiaojun Zhuo, Hao Zheng, Yuwei Liu   +8 more
doaj   +1 more source

Macrostylis metallicola spec. nov.-an isopod with geographically clustered genetic variability from a polymetallic-nodule area in the Clarion-Clipperton Fracture Zone. [PDF]

PeerJ, 2020
Riehl T, De Smet B.
europepmc   +1 more source