Results 51 to 60 of about 3,360 (218)

An assessment of bottom current controlled sedimentation in Pacific Ocean abyssal environments [PDF]

open access: yes, 2018
The effect of the circulation of polar-sourced dense waters on the deep seafloor is still largely unknown. This paper presents multibeam bathymetric evidence for the existence of present-day contourite drifts on the central Pacific ocean at depths ...
De Bruycker, Wouter   +2 more
core   +2 more sources

Rethinking Sustainable Batteries

open access: yesAdvanced Energy Materials, Volume 15, Issue 47, December 16, 2025.
This perspective examines sustainability across the entire battery lifecycle, from mining and manufacturing to use and end of life. Twelve principles for ‘green’ batteries are outlined, and it is argued that joint industrial, academic, and policy efforts are essential to building a truly sustainable energy future. Abstract Batteries will play a pivotal
Heather Au   +5 more
wiley   +1 more source

Giant protists (xenophyophores, Foraminifera) are exceptionally diverse in parts of the abyssal eastern Pacific licensed for polymetallic nodule exploration [PDF]

open access: yes, 2017
Xenophyophores, giant, fragile, agglutinated foraminifera (protists), are major constituents of the abyssal megafauna in the equatorial Pacific Clarion-Clipperton Zone (CCZ), a region where seabed mining of polymetallic nodules may occur in the future ...
Caulle, Clémence   +6 more
core   +1 more source

Experimental seabed disturbance effects on Chatham Rise deep‐sea meiofaunal communities, Southwest Pacific

open access: yesNew Zealand Journal of Marine and Freshwater Research, Volume 59, Issue 5, Page 1388-1421, December 2025.
ABSTRACT Growing global demand for deep‐sea resources may lead to increased pressure on benthic ecosystems. Here we examined changes in meiofaunal communities following an in situ physical disturbance experiment. A significant change in meiofaunal community structure in surface (0‐1 cm) and subsurface (1‐5 cm) sediments was observed immediately ...
Daniel Leduc   +5 more
wiley   +1 more source

Heterogeneous marine environments diversify microbial-driven polymetallic nodule formation in the South China Sea

open access: yesFrontiers in Marine Science
Most studies on the genesis of polymetallic nodules suggested that nodules in the South China Sea (SCS) are hydrogenetic; however, the complexity and the heterogeneity in hydrology and geochemistry of the SCS might cause different processes of nodule ...
Mingyan Lai   +15 more
doaj   +1 more source

Ferromanganese nodules and micro-hardgrounds associated with the Cadiz Contourite Channel (NE Atlantic): Palaeoenvironmental records of fluid venting and bottom currents [PDF]

open access: yes, 2012
Ferromanganese nodule fields and hardgrounds have recently been discovered in the Cadiz Contourite Channel in the Gulf of Cadiz (850–1000 m). This channel is part of a large contourite depositional system generated by the Mediterranean Outflow Water ...
Abouchami   +159 more
core   +2 more sources

Effects of experimental in situ seabed disturbance on deep‐sea macrofaunal communities of Chatham Rise, Southwest Pacific

open access: yesNew Zealand Journal of Marine and Freshwater Research, Volume 59, Issue 5, Page 1422-1459, December 2025.
ABSTRACT With the possibility of deep‐sea mining of mineral resources occurring, it is necessary to understand potential impacts on benthic communities. Previous simulated mining experiments revealed direct benthic impacts; however, indirect impacts of sedimentation are not well understood.
Campbell Murray   +6 more
wiley   +1 more source

Characterization, Calcination and Pre-Reduction of Polymetallic Manganese Nodules by Hydrogen and Methane

open access: yesMetals, 2022
A polymetallic manganese nodule was characterized and further calcined and pre-reduced by H2, CH4, and H2-CH4 mixtures at elevated temperatures. It was found that the main Mn and Fe elements coexisted in the ore in different minerals, and the Mn/Fe ratio
Ole Kristian Brustad   +3 more
doaj   +1 more source

Exploitation of Resources in the Area and the Sponsoring State Responsibility: New Developments in China's Legislative Work Concerning the Deep Sea [PDF]

open access: yes, 2016
贾宇,法学博士,国家海洋局海洋发展战略研宄所研究员。主要研宄方向:国际法、海洋法。【中文摘要】规范“区域”资源勘探开发的国际法律制度发展较快,除《联合国海洋法公约》及其执行协定之外,巳经制定了关于多金属结核、富钴结壳和硫化物的勘探规章。国际海洋法法庭就第17号案发表的“咨询意见”,催生了一些国家,特别是发展中国家关于担保国责任的国内法。在此背景下,中国出台了《中华人民共和国深海海底区域资源勘探开发法》,该法是中国首部关于“区域”资源勘探和开发的专门立法,对适用范围、“区域”资源的勘探开发、环境保护 ...
JIA Yu, 贾宇
core  

Almost billfish: convergent longirostry, micro‐dentition, and possible glandular sinuses in a large teleost fish from the Upper Cretaceous of Northern Italy

open access: yesJournal of Anatomy, Volume 247, Issue 6, Page 1109-1130, December 2025.
A fossil rostrum fragment of a large teleost fish from the Upper Cretaceous of Northern Italy reveals remarkable anatomical convergences with Cenozoic and Recent billfishes (marlins, swordfishes, and akin). The extinct group Plethodidae independently acquired a long snout, micro‐teeth, and oil‐gland sinuses well before the evolution of true billfishes.
Giovanni Serafini   +5 more
wiley   +1 more source

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