Results 271 to 280 of about 403,791 (331)

India and deep sea mining

Endeavour, 1990
This article reviews India's programme aimed at commercial development of mining for deep-sea manganese nodules. The programme is viewed in the wider context of Indian science and technology policy in general and the ocean sciences in particular, emphasizing major factors which have led to its implementation.
John Yates, K.R. Gupta
openaire   +1 more source

An Algorithm of Complete Coverage Path Planning for Deep‐Sea Mining Vehicle Clusters Based on Reinforcement Learning

Advanced Theory and Simulations
This paper proposes a deep reinforcement learning algorithm to achieve complete coverage path planning for deep‐sea mining vehicle clusters. First, the mining vehicles and the deep‐sea mining environment are modeled.
Bowen Xing, Xiao Wang, Zhenchong Liu
semanticscholar   +1 more source

CFD-DEM analysis of internal flow characteristics in multistage deep-sea mining pumps

Ships and Offshore Structures
The potential profits associated with deep-sea mineral deposits have encouraged the development of new mining techniques. In particular, the effectiveness of lift pumps is crucial to the success or failure of these mining operations.
Yuanwen Li
semanticscholar   +1 more source

Hydrodynamic Parameter Identification of Deep‐Sea Mining Vehicle during Deployment and Retrieval Using a Nonlinear Filter

Advanced Theory and Simulations
The aim of this paper is to propose a novel method for identifying the hydrodynamic parameters of a deep‐sea mining vehicle during deployment and retrieval. The proposed approach combines numerical simulation with a nonlinear filter.
Yingjie Guan, Hongmao Qin, Manjiang Hu, Qingjia Cui, Hao Zheng, Rongjun Ding   +5 more
semanticscholar   +1 more source

Analysis of vibration characteristics of lifting rigid pipe in deep-sea mining under ship movement

Marine Georesources & Geotechnology
In deep sea mining systems, the bottom-suspended lifting rigid pipe, spanning several kilometers, exhibits significant deformations and nonlinear vibration characteristics under the influence of vessel motion and oceanic environment.
Bin Huang, Jiacheng Chen, Chang Liu, Luyao Wang, Pengzhong Wang   +4 more
semanticscholar   +1 more source

Precautionary management of deep-sea mining

Marine Policy, 2002
Abstract Interest in deep-sea mining developed in the early 1970s, with a focus on manganese nodules in international waters. Mining may actually occur first, however, on rich polymetallic sulfide deposits associated with hydrothermal vents within exclusive economic zones.
Jochen Halfar, Rodney M Fujita
openaire   +1 more source

Deep-Sea Mining

2022
openaire   +2 more sources

Concepts of Deep-Sea Mining Technologies

2017
The contents of this chapter are from published literature by the team working in the area of deep-sea mining at National Institute of Ocean Technology (NIOT). It starts with a brief introduction on deep-sea mining technologies. This is followed by the historical perspectives and the present-day work and execution in phases towards deep-sea mining in ...
M. A. Atmanand, G. A. Ramadass
openaire   +1 more source

Lessons Learned from Deep-Sea Mining

Science, 2000
The first attempt to exploit deep-sea manganese nodules ended in failure as a result of the collapse of world metal prices, the onerous provisions imposed by the U. N. Conference on the Law of the Sea (UNCLOS), and the overoptimistic assumptions about the viability of nodule mining. Attention then focused on cobalt-rich manganese crusts from seamounts.
openaire   +1 more source

Deep-sea mining as an emerging threat to deep sea ecosystems

The deep sea is the biggest ecosystem on Earth, representing around 90% of the marine environment. Despite its remoteness and inaccessibility, the deep sea is under constant threat from anthropogenic activities. Among them is deep-sea mining, that is quickly rising as an appealing alternative to land-based mining.
Marlene Pinheiro, Nélson Alves, Joana Raimundo, Miguel Caetano, Joana Xavier, Teresa Neuparth, Miguel M. Santos   +6 more
openaire   +1 more source