Results 31 to 40 of about 91,473 (196)

Thorium-234 as a tracer for deep-sea mining sediment plume deposition [PDF]

Nature Communications
Deep-sea mining for polymetallic nodules is currently exploratory, but commercial-scale operations require indicators of environmental change to support regulatory thresholds and inform adaptive management.
Bryan J. O’Malley, Patrick T. Schwing, Sophia K. Chernoch, Rebekka A. Larson, Michael Clarke, Leigh M. Marsh, Alastair J. M. Lough, Gregg R. Brooks   +7 more
doaj   +2 more sources

Exploration of Polymetallic Nodules

Minerals, 2022
The use of mineral resources has always been critical for human development [...]
Pedro Madureira, Tomasz Abramowski
openaire   +2 more sources

Radon emanation from polymetallic nodules from the CCZ collected during SONNE cruises SO239 and SO268/2

, 2022
This dataset comprises radon concentrations emanated from four polymetallic nodules of different sizes from the CCZ. The nodules were collected in the framework of the European collaborative JPI Oceans MiningImpact project onboard R/V SONNE cruises SO239
Kasten, Sabine, Koehler, Dennis, Geibert, Walter, Rutgers van der Loeff, Michiel M, Volz, Jessica B   +4 more
core   +1 more source

Simultaneous Leaching of Seafloor Massive Sulfides and Polymetallic Nodules [PDF]

Minerals, 2019
Simultaneous leaching of seafloor massive sulfides (SMS) from Loki’s Castle on the Arctic Mid-Ocean Ridge (AMOR) and polymetallic nodules (PN) from Clarion Clipperton Zone (CCZ) of the Central Pacific Ocean was studied. Leaching tests were conducted using sulfuric acid and sodium chloride, at a temperature of 80 °C for 48 h under reflux.
Przemyslaw Kowalczuk, Hassan Bouzahzah, Rolf Kleiv, Kurt Aasly   +3 more
openaire   +2 more sources

Spatial Variability of Abyssal Nitrifying Microbes in the North-Eastern Clarion-Clipperton Zone

Frontiers in Marine Science, 2021
Abyssal microbes drive biogeochemical cycles, regulate fluxes of energy and contribute to organic carbon production and remineralization. Therefore, characterizing the spatial variability of benthic microbes is important for understanding their roles in ...
Anita L. Hollingsworth, Anita L. Hollingsworth, Daniel O. B. Jones, C. Robert Young   +3 more
doaj   +1 more source

Distribution of radioisotopes in polymetallic nodules from the CCZ collected during SONNE cruise SO239

, 2022
This dataset comprises gamma spectrometric measurements of radioisotopes in samples from polymetallic nodules, which were collected in the framework of the European collaborative JPI Oceans MiningImpact project onboard R/V SONNE cruise SO239 in 2015 ...
Kasten, Sabine, Koehler, Dennis, Geibert, Walter, Rutgers van der Loeff, Michiel M, Volz, Jessica B   +4 more
core   +1 more source

From the Surface to the Deep-Sea: Bacterial Distributions across Polymetallic Nodule Fields in the Clarion-Clipperton Zone of the Pacific Ocean

Frontiers in Microbiology, 2017
Marine bacteria regulate fluxes of matter and energy essential for pelagic and benthic organisms and may also be involved in the formation and maintenance of commercially valuable abyssal polymetallic nodules.
Markus V. Lindh, Brianne M. Maillot, Christine N. Shulse, Andrew J. Gooday, Diva J. Amon, Craig R. Smith, Matthew J. Church, Matthew J. Church   +7 more
doaj   +1 more source

The contribution of microbial communities in polymetallic nodules to the diversity of the deep-sea microbiome of the Peru Basin (4130–4198 m depth) [PDF]

Biogeosciences, 2020
Industrial-scale mining of deep-sea polymetallic nodules will remove nodules in large areas of the sea floor. The regrowth of the nodules by metal precipitation is estimated to take millions of years. Thus, for future mining impact studies, it is crucial
M. Molari, F. Janssen, F. Janssen, T. R. Vonnahme, T. R. Vonnahme, F. Wenzhöfer, F. Wenzhöfer, A. Boetius, A. Boetius   +8 more
doaj   +1 more source

Potential Short-Term Effects of Mine Tailings on Phytoplankton Assemblages in the Open Ocean

Journal of Marine Science and Engineering, 2022
The disposal of mine tailings into the marine environment is considered an essential option to secure the economic efficiency of deep-sea mining, but it might adversely affects the ecosystem.
Dong Han Choi, Jangyeon Yoo, Wonseok Yang, Jae Hoon Noh, Yeonjung Lee, Kongtae Ra, Kiseong Hyeong, Chan Min Yoo, Jisoo Park   +8 more
doaj   +1 more source

Biological responses to disturbance from simulated deep-sea polymetallic nodule mining. [PDF]

PLoS ONE, 2017
Commercial-scale mining for polymetallic nodules could have a major impact on the deep-sea environment, but the effects of these mining activities on deep-sea ecosystems are very poorly known. The first commercial test mining for polymetallic nodules was
Daniel O B Jones, Stefanie Kaiser, Andrew K Sweetman, Craig R Smith, Lenaick Menot, Annemiek Vink, Dwight Trueblood, Jens Greinert, David S M Billett, Pedro Martinez Arbizu, Teresa Radziejewska, Ravail Singh, Baban Ingole, Tanja Stratmann, Erik Simon-Lledó, Jennifer M Durden, Malcolm R Clark   +16 more
doaj   +1 more source