Results 61 to 70 of about 2,218,138 (170)

Tracking the impact of bottom trawling on benthic habitat status

Conservation Biology, Volume 40, Issue 5, October 2026.
Abstract Bottom trawling is the most widespread physical disturbance to marine benthic habitats, yet broadscale assessments of its impact remain limited. We developed a quantitative framework to evaluate trawling effects on benthic habitats at broad spatial scales based on the sentinels of seabed (SoS) indicator.
Maider Plaza‐Morlote, Ana García‐Alegre, Alberto Serrano, Ulla Fernández‐Arcaya, Antonio Punzón, Ana Rodríguez‐Rúa, Sara Roman, Ana Magro, Marina Delgado, Juan Gil, José Manuel González‐Irusta   +10 more
wiley   +1 more source

Studies into the detection of buried objects (particularly optical fibres) in saturated sediment. Part 3: experimental investigation of acoustic penetration of saturated sediment

, 2007
This report is the third in a series of five, designed to investigate the detection oftargets buried in saturated sediment, primarily through acoustical or acoustics-relatedmethods.
Leighton, T.G., Evans, R.C.P.
core   +1 more source

A Robust Seabed Sediment Classification Method Based on Multifeature Fusion

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
Seabed sediment classification using multibeam echosounder (MBES) data, such as bathymetry, backscatter angular response (AR), and backscatter mosaic, has the advantages of being faster and less costly than the traditional seafloor grab sampling. However,
Quanyin Zhang, Jianhu Zhao, Shaobo Li
doaj   +1 more source

1D Basin Modelling of Upper Jurassic to Upper Cretaceous Source Rocks in the Southern Pletmos Sub‐Basin, Outeniqua Basin, Offshore South Africa

Journal of Petroleum Geology, Volume 49, Issue 4, Page 1382-1411, October 2026.
ABSTRACT The Pletmos sub‐basin in the Outeniqua Basin, offshore South Africa, is divided by the Superior, Pletmos and Plettenberg faults into northern and southern depocentres. In this study, geological and organic geochemical data together with 1D basin modelling were used to investigate the burial, thermal and maturation histories, and the timing of ...
Fritz Ako Agbor, Sanelisiwe Mhlambi, Nimuno Achu Teumahji, Wasiu Adedayo Sonibare, Jan van Bever Donker   +4 more
wiley   +1 more source

Energy-Efficient Design of Seabed Substrate Detection Model Leveraging CNN-SVM Architecture and Sonar Data

EAI Endorsed Transactions on Energy Web
This study introduces an innovative seabed substrate detection model that harnesses the complementary strengths of Convolutional Neural Networks (CNNs) and Support Vector Machines (SVMs) to analyze sonar data with a focus on energy efficiency. The model
Keming Wang, Chengli Wang, Wenbing Jin, Liuming Qi   +3 more
doaj   +1 more source

The effects of bioturbation on porewater chemistry and early marine diagenesis: Evidence from a modern intertidal zone in Abu Dhabi, U.A.E.

Sedimentology, Volume 73, Issue 6, Page 2120-2142, October 2026.
ABSTRACT Early marine carbonate cements generally form in CaCO3‐supersaturated seawater at the seabed or shallow burial depths, resulting in syn‐sedimentary cemented firmgrounds and hardgrounds. The processes controlling early marine diagenesis are complex, particularly in coastal environments where geochemistry is influenced by different water sources
Drew Brown, Tom Kibblewhite, Fiona Whitaker, Daniela Gutierrez‐Rueda, Daniel S. Alessi, John‐Paul Zonneveld, Murray Gingras, Hilary Corlett   +7 more
wiley   +1 more source

Seabed Geoacoustic Analysis Using Scientific Single Beam Echosounder

Jurnal Ilmiah Perikanan dan Kelautan
Graphical Abstract   Highlight Research Hydroacoustic technology was used to identify seabed substrates in real-time with the Simrad EK-15 Single Beam Echosounder. Acoustic backscatter analysis classified seabed substrates into 9 sediment types,
La Elson La Elson, Henry M. Manik Manik, Totok Hestirianoto Hestirianoto, Sri Pujiyati Pujiyati   +3 more
doaj   +1 more source

Generation and Preservation of Submarine Terraces: Insights From Records Imprinted on the Topography of Dokdo Volcano

Geophysical Research Letters, Volume 53, Issue 18, 28 September 2026.
Abstract Marine terraces archive sea‐level and tectonic history, yet their relationship to individual highstands remains contentious. While most studies focus on subaerial terraces in uplifting settings, submerged terraces in subsiding settings are less explored. We develop a 1‐D wave‐erosion model and apply it to Dokdo — a subsiding volcanic island in
Duhwan Keum, Chang Hwan Kim, Luca C. Malatesta, Wonsuck Kim   +3 more
wiley   +1 more source

Physics-Guided Random Forest Classification of Marine Sediments Using Frequency-Dependent Acoustic Reflection Spectra

Applied Sciences
Traditional acoustic seabed classification methods, which are often sensitive to survey geometry and environmental conditions, have limitations in reliability and reproducibility.
Moshe Greenberg, Vladimir Frid
doaj   +1 more source

Habitat loss does not affect ecological connectivity for a habitat engineer with short dispersal

Ecosphere, Volume 17, Issue 9, September 2026.
Abstract Habitat loss, directly linked to anthropogenic activities, is a key driver of biodiversity loss globally; in combination with habitat fragmentation, it leads to smaller, more isolated population patches. Such changes in habitat configuration can negatively impact population connectivity (i.e., the supply of individuals locally or from ...
Arieanna C. Balbar, Anna Metaxas, Yongsheng Wu   +2 more
wiley   +1 more source