Results 1 to 10 of about 1,008,641 (218)

Seafloor morphology and substrate mapping in the Gulf of St Lawrence, Canada, using machine learning approaches [PDF]

Frontiers in Marine Science
Detailed maps of seafloor substrata and morphology can act as valuable proxies for predicting and understanding the distributions of benthic communities and are important for guiding conservation initiatives.
Emily Sklar, Esther Bushuev, Benjamin Misiuk, Benjamin Misiuk, Benjamin Misiuk, Guillaume Labbé-Morissette, Craig J. Brown   +6 more
doaj   +4 more sources

The Antarctic Seafloor Annotated Imagery Database [PDF]

Scientific Data
Marine imagery can be a comparatively cost-effective way to collect data on seafloor organisms, biodiversity and habitat morphology. However, annotating these images to extract detailed biological information is time-consuming and expensive, and ...
Jan Jansen, Victor Shelamoff, Charley Gros, Thomas Windsor, Nicole A. Hill, David K. Barnes, David A. Bowden, Julian Gutt, Narissa Bax, Rachel V. Downey, Marc P. Eléaume, Alexandra L. Post, Huw J. Griffiths, Katrin Linse, Dieter Piepenburg, Autun Purser, Craig R. Smith, Amanda Ziegler, Craig R. Johnson   +18 more
doaj   +2 more sources

Giant Seafloor Depressions Caused by Slope Failures and Bottom Currents on the Namibia Continental Margin

Geochemistry, Geophysics, Geosystems, 2021
More than 100 circular, elongate or crescent‐shaped very large seafloor depressions were found on the southern Namibian continental margin in water depths between 900 and 1700 m. These depressions show extraordinary sizes of up to 3 km diameter and 180 m
S. Wenau, V. Spiess, M. Zabel
doaj   +2 more sources

High-Silica Lava Morphology at Ocean Spreading Ridges: Machine-Learning Seafloor Classification at Alarcon Rise

Geosciences, 2019
The oceanic crust consists mostly of basalt, but more evolved compositions may be far more common than previously thought. To aid in distinguishing rhyolite from basaltic lava and help guide sampling and understand spatial distribution, we constructed a ...
Christina H. Maschmeyer, Scott M. White, Brian M. Dreyer, David A. Clague   +3 more
doaj   +3 more sources

A global scale submarine landform dataset driven by terrain knowledge [PDF]

Scientific Data
Submarine landforms are a critical component of Earth’s geomorphology, essential for understanding marine geological evolution, ocean dynamics, and marine ecosystems. However, global-scale classification of submarine landforms has been constrained by the
Fengyize Yu, Liyang Xiong, Hongen Wang, Guoan Tang, Josef Strobl   +4 more
doaj   +2 more sources

Impacts of seafloor characteristics on three-dimensional sound propagation in a submarine canyon [PDF]

JASA Express Letters, 2023
Three-dimensional (3D) underwater sound propagation in a submarine canyon is investigated with a numerical model and a dataset collected in a towed source experiment. This study emphasizes the impacts of seafloor bathymetry and sediment properties, which
Tzu-Ting Chen, Ying-Tsong Lin, Linus Y.-S. Chiu   +2 more
doaj   +1 more source

Testing the Improvement of Coral Reef Associated Fish Distribution Models Based on Multibeam Bathymetry by Adding Seafloor Backscatter Data

Frontiers in Marine Science, 2021
Demersal fishes constitute an essential component of the continental shelf ecosystem, and a significant element of fisheries catch around the world. However, collecting distribution and abundance data of demersal fish, necessary for their conservation ...
Marcela Montserrat Landero Figueroa, Miles J. G. Parsons, Benjamin J. Saunders, Ben Radford, Iain M. Parnum   +4 more
doaj   +1 more source

Hunting paleoceanographic archives of ice sheet-ocean interaction in the northwestern Ross Sea, Antarctica

Frontiers in Earth Science, 2023
The analysis of sedimentary deposits influenced by bottom currents in glaciated continental margins provides crucial insights into paleo-depositional and oceanographic conditions.
Sookwan Kim, Laura De Santis, Jong Kuk Hong, Ester Colizza, Sunghan Kim, Andrea Bergamasco, Sang-Hoon Lee, Seung-Goo Kang, Min Kyung Lee, Hyoungjun Kim, Yeonjin Choi, Andrea Geniram, Hyoung Gyu Choi, Jae Il Lee, Kyu-Cheul Yoo, Yongcheol Park   +15 more
doaj   +1 more source

Circular structures on the seabed: differentiating between natural and anthropogenic origins—Examples from the Southwestern Baltic Sea

Frontiers in Earth Science, 2023
Hydroacoustic observations of shallow marine environments reveal a variety of seafloor structures–both of natural and anthropogenic origin. Natural processes can result in features with circular geometries on the seafloor, such as kettles, sinkholes or ...
Giuliana Andrea Díaz-Mendoza, Knut Krämer, Gitta Ann von Rönn, Klaus Schwarzer, Christoph Heinrich, Hans-Christian Reimers, Christian Winter   +6 more
doaj   +1 more source

An Approach for the Automatic Characterization of Underwater Dunes in Fluviomarine Context

Geosciences, 2022
The identification of underwater landforms represents an important role in the study of the seafloor morphology. In this context, the segmentation and characterization of underwater dunes allow a better understanding of the dynamism of the seafloor ...
Willian Ney Cassol, Sylvie Daniel, Éric Guilbert   +2 more
doaj   +1 more source