Results 101 to 110 of about 91,473 (196)

Research Status of Deep-Sea Polymetallic Nodule Collection Technology

open access: yesJournal of Marine Science and Engineering
The bottom of the ocean is rich in mineral resources, and deep-sea mining has been a research hotspot in recent years. As a key part of deep-sea mining operation, polymetallic nodule collection technology has been researched in many countries around the ...
Boying Liu   +5 more
doaj   +1 more source

Acoustic characteristics of polymetallic nodules collected from Central Indian Ocean Basin

open access: yes, 1999
106-108Measurements of acoustic velocity and density on polymetallic nodules (diameters in range 1.7-5.1 cm) have been taken using through transmission pulse technique at low frequencies in the vicinity of 80 kHz, using low frequency probes based on ...
Bindal, V.N., Gupta, Reeta, Jain, S.K.
core  

Beyond the plains: deep-sea mining of polymetallic nodules on and around seamounts

open access: yesFrontiers in Marine Science
Deep-sea mining management, scientific research, and public discourse have largely focused on polymetallic nodule extraction from abyssal plains. However, there is growing commercial interest in nodules on and around seamounts, with exploration and ...
Cherisse Du Preez   +4 more
doaj   +1 more source

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

open access: yesInternational 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   +8 more
doaj   +1 more source

Radioactivity in Manganese Nodules

open access: yes
The dataset contains specific activities of naturally occurring radionuclides in bulk and surface samples of deep-sea manganese nodules, and activity ratios of of selected nuclides.
Kunze, C (via Mendeley Data)   +1 more
core   +1 more source

Megabenthic ecology of abyssal polymetallic nodule fields [PDF]

open access: yes, 2019
Abyssal polymetallic nodule fields constitute an unusual deep-sea habitat. The mix of soft sediment and the hard substratum provided by nodules increases the complexity of these environments, and is thought to promote the occurrence of some of the most biologically diverse seafloor assemblages in the abyss.
openaire  

Global distribution and metal endowment of seafloor polymetallic nodules

open access: yes
Abstract Metals of strategic and economic importance, including nickel, copper, and cobalt, accumulate on the deep ocean seabed in the form of polymetallic nodules. These deposits, largely in international waters, are classified as the common heritage of humankind as per the widely ratified United Nations (UN) Law of the Sea.
Daniel Babin, Maureen Raymo
openaire   +1 more source

Reduction studies on polymetallic sea nodules

open access: yes, 2004
Roast-reduction followed by ammonia leaching may be a commercially viable process for the treatment of polymetallic sea nodules. Inthis process selective reduction of metals is an important step.
Prasad, Sanjay
core   +1 more source

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