Results 61 to 70 of about 1,008,641 (218)

Linking Sidescan Sonar Backscatter Intensity to Seafloor Sediment Grain Size Fractions: Insight from Dongluo Island

Journal of Marine Science and Engineering
Accurate characterization of seafloor sediment properties is critical for marine engineering design, resource assessment, and environmental management. Sidescan sonar offers efficient wide-area mapping capabilities, yet establishing robust quantitative ...
Songyang Ma, Bin Li, Peng Wan, Chengfu Wei, Zhijian Chen, Ruikeng Li, Zhenqiang Zhao, Chi Chen, Jiangping Yang, Jun Tu, Mingming Wen   +10 more
doaj   +1 more source

Absence of a Hectocotylus and Associated Mating Behaviour in the Paintpot Cuttlefish Ascarosepion tullbergi

Acta Zoologica, EarlyView.
ABSTRACT A hectocotylus is a sexually modified arm used by males of some cephalopod species to transfer spermatophores to females. In most cuttlefish (Sepiidae), it corresponds to the left arm IV, in which basal suckers are reduced or absent; this modification is thought to facilitate sperm transfer without premature rupture, which could be caused by ...
Ayano Omura, Shin‐ichiro Oka, Taketeru Tomita, Haruka Takano, Daisuke Funabara   +4 more
wiley   +1 more source

Submarine geomorphological features of the Gran Canaria island based on multibeam bathymetry

Journal of Maps
We present the main submarine geomorphological features of the Gran Canaria island at a scale of 1:1,000,000 to improve seafloor knowledge. In 2024, two oceanographic cruises were carried out around the island of Gran Canaria, covering an area of ∼ 21 ...
Desirée Palomino, Rafael Bartolomé, Juan Tomás Vázquez, Ferrán Estrada, Olga Sánchez-Guillamón, Roberto Cabieces, David Casas, Melania Cubas-Armas, Hugo Latorre, Alejandra Neri, Manel Prada, Antonio Villaseñor   +11 more
doaj   +1 more source

Complex seafloor morphology around Weno Island, Chuuk (Micronesia)

, 2007
A detailed analysis of high-resolution, multi-beam bathymetric data around Weno Island (Chuuk) reveals very complex seafloor topography caused by build up or growth of coral reef associated with the Holocene sea-level rise.
박흥식, 이상훈
core  

Submerged geomorphic record of Quaternary palaeoshorelines: terraces and clinothems along a shelf‐edge in the Žirje Archipelago, Adriatic Sea

Boreas, EarlyView.
Numerous studies have shown that during the Quaternary there were substantial fluctuations in sea level in response to glacial–interglacial climate variability, reaching lowstand positions up to 134 m below the present sea level (b.s.l.). These fluctuations have had a strong influence on the morphology of shallow shelf seas, which preserve evidence of ...
Ozren Hasan, Dea Brunović, Natalia Smrkulj, Maria Geraga, Dimitris Christodoulou, Nikolina Ilijanić, George Papatheodorou, Slobodan Miko   +7 more
wiley   +1 more source

A concept for seabed rare earth mining in the eastern South Pacific

, 2012
This report presents a concept for mining of rare earth elements from seabed sediment in a promising area of the eastern South Pacific. The document begins with an introduction to the seabed, its regulation and resources.
Bashir, M.B., Zhang, W, Kiosidou, E., Kim, S.H., Wolgamot, H.   +4 more
core   +1 more source

Topology‐based Visual Analysis of Hydrothermal Plumes

Computer Graphics Forum, EarlyView.
Abstract Hydrothermal plumes are turbulent structures of intense heat and mineral smoke that rise and disperse into the deep ocean. Existing models generally characterize these systems as a single axisymmetric plume originating from a point source. However, this assumption breaks down in weakly venting, spatially distributed systems, where low‐flux ...
Adhitya Kamakshidasan, Tushar Jain, Karen Bemis, Valerio Pascucci   +3 more
wiley   +1 more source

Deep sea ecosystem exploration and ‘health check’: sampling strategy and methods applied during the iAtlantic_BR10_Petrobras cruise in the Santos Basin, Southwest Atlantic

Ocean and Coastal Research
The iAtlantic Project has established an international collaborative strategy to improve mapping and characterization of deep and open ocean ecosystems in understudied regions of the Atlantic and evaluate their health.
Jose Angel A. Perez, Halésio M.C. de Barros Neto, Renata C.M. Arantes, Daniela Y. Gaurisas, Camila F. Silva, Fernanda Maria M. Alves, Júlia A. Costa, Paula D.C. Eloi, Thayse S. Fonseca, Lucas Gavazzoni, Isabella da S. Lonskis, Ricardo U. Nardi, Pedro O. Nascimento, João Vitor M. Rodrigues, Ana Lara F. dos Santos, Edson C. dos Santos, Rafael Schroeder, Luis Carlos da Silva, Fernanda dos S.S. de Souza, Ângelo F. Bernardino, Guarani H. Cavalcanti, Alberto Lindner, Michel M. de Mahiques, Christian Millo, Priscila Reis, Andrew K. Sweetman, J. Murray Roberts   +26 more
doaj   +1 more source

Examining the Impact of Derelict Pots on Blue Crab (Callinectes sapidus) Catch and Harvest Within a Recreational Fishery

Fisheries Management and Ecology, EarlyView.
ABSTRACT Derelict fishing gear can negatively affect marine ecosystems through mortality in coastal environments. This study explored the impact of derelict and active crab pots on recreational blue crab (Callinectes sapidus) catch rates and landings in a Mid‐Atlantic estuary by deploying experimental pots in four habitat strata within three sections ...
Randy J. Feris Serrano, Jennifer E. Repp, Kaylin M. Regan, Arthur C. Trembanis, Matthew J. Oliver, Edward A. Hale   +5 more
wiley   +1 more source

Spider structures: records of fluid venting from methane hydrates on the Congo continental slope

BSGF - Earth Sciences Bulletin, 2017
Fluid seepage features on the upper continental slope offshore Congo are investigated using multi-disciplinary datasets acquired during several campaigns at sea carried out over the last 15 years. This datasets includes multibeam bathymetry, seismic data,
Casenave Viviane, Gay Aurélien, Imbert Patrice   +2 more
doaj   +1 more source