Results 51 to 60 of about 1,609 (180)

Benchmarking Multiple Methods for the Spectral Analysis of Seafloor Morphology

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 10, October 2026.
Abstract The influence of glacial sea‐level changes on the quasi‐periodic spacing of abyssal hills has remained controversial for over a decade. Spectral analyses of seafloor morphology have yielded contrasting conclusions regarding whether periodicities associated with orbital Milankovitch forcing are recorded in abyssal hill spacing, raising ...
B. Bauer, I. Grevemeyer, L. Rüpke, P. Huybers, A. Dannowski, M. Riedel, M. Frank, K. Hoernle, C. Langmuir, H. Kopp   +9 more
wiley   +1 more source

Tectonic Evolution of the Mariana Trough

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 10, October 2026.
Abstract The Mariana Trough is an active back‐arc basin formed by subduction of the Pacific Plate beneath the Philippine Sea Plate and provides an ideal setting for investigating the evolution of back‐arc basins. In this study, we compile bathymetric, magnetic, and gravity data to reconstruct the formation history of the entire basin.
Seitaro Ono, Kyoko Okino, Nobukazu Seama, Toshitsugu Yamazaki, Hisanori Iwamoto   +4 more
wiley   +1 more source

Kogia Records in Brazilian Equatorial and Southwestern Atlantic Oceans

Marine Mammal Science, Volume 42, Issue 4, October 2026.
ABSTRACT The pygmy (Kogia breviceps) and dwarf (Kogia sima) sperm whales are cryptic cetaceans characterized by inconspicuous surfacing behavior, small group sizes, and deep‐diving habits, making visual detection particularly challenging. Here, we present the first broad‐scale passive acoustic monitoring (PAM) assessment of Kogia spp.
Joao Pedro M. Mura, Raphael B. Machado, Yasmin P. Viana, Natalia Rodrigues‐Soares, Giovanne A. Ferreira, Larissa Kelmer L. Kascher, Barbara S. Silva, Lucia O. Alencar, Gabrieli M. Rodrigues, Franciele R. de Castro, Daniela F. Godoy, Jose L. Pizzorno, Artur Andriolo   +12 more
wiley   +1 more source

A Novel Method to Infer Harbor Porpoise Foraging Behavior From Acoustic Data: A Comparative Assessment Against Established Techniques

Marine Mammal Science, Volume 42, Issue 4, October 2026.
ABSTRACT Assessing foraging behavior of harbor porpoise (Phocoena phocoena) from acoustic data has become increasingly common. Yet, a wide range of analytical methods is currently used, often without formal evaluation of their comparability. This lack of cross‐method validation limits the ability to compare findings across studies and interpret ...
Sofya Aoufi, Bob Rumes, Jan Vanaverbeke, Steven Degraer, Elisabeth Debusschere   +4 more
wiley   +1 more source

Robust Capon Beamforming against Steering Vector Error Dominated by Large Direction-of-Arrival Mismatch for Passive Sonar

Journal of Marine Science and Engineering, 2019
Capon beamforming is often applied in passive sonar to improve the detectability of weak underwater targets. However, we often have no accurate prior information of the direction-of-arrival (DOA) of the target in the practical applications of passive ...
Yu Hao, Nan Zou, Guolong Liang
doaj   +1 more source

Quantitative measures for passive sonar texture analysis

Synthetic Data for Artificial Intelligence and Machine Learning: Tools, Techniques, and Applications IV
Passive sonar signals contain complex characteristics often arising from environmental noise, vessel machinery, and propagation effects. While convolutional neural networks (CNNs) perform well on passive sonar classification tasks, they can struggle with statistical variations that occur in the data. To investigate this limitation, synthetic underwater
Jarin Ritu, Alexandra Van Dine, Joshua Peeples   +2 more
openaire   +3 more sources

Hierarchical Assembly as a Design Principle: Structure–Property Relationships Linking Biological Architectures to Functional Aggregate Materials

Aggregate, Volume 7, Issue 9, September 2026.
Biological function arises from aggregates rather than from molecules. Comparing biomimetic systems on a common basis reveals three transferable design rules governing hierarchical assembly, interfacial gradients, and stimulus‐coupled anisotropy, and identifies self‐healing and single‐step multiscale integration as properties that do not transfer to ...
Nafeesa Sarfraz, Sadaf Bibi, Muhammad Ibrar Ahmed, Jawad Hussain, Shahid Iqbal, Imran Mahmood Khan, Ajayan Vinu, Ibrahim Khan   +7 more
wiley   +1 more source

Recent advances in multifunctional soft robots: A materials–structures–systems co‐design perspective for synergistic integration

FlexMat, Volume 3, Issue 3, Page 452-501, September 2026.
Abstract Soft robots, engineered from highly compliant materials, offer superior adaptability and safety in unstructured environments compared to their rigid counterparts. Recent advancements, fueled by bio‐inspiration and material programmability, have led to the rapid co‐evolution of their core modules: actuation, sensing, protection, energy, and ...
Qiulei Liu, Zicao Peng, Chong Sun, Haitao Yang   +3 more
wiley   +1 more source

An Algorithm for Submarine Passive Sonar Simulator

THE JOURNAL OF THE ACOUSTICAL SOCIETY OF KOREA, 2013
Actual maritime exercise for improving the capability of submarine sonar operator leads to a lot of cost and constraints. Sonar simulator maximizes the capability of sonar operator and training effect by solving these problems and simulating a realistic battlefield environment.
openaire   +2 more sources

Underwater Acoustic Research Trends with Machine Learning: Passive SONAR Applications

한국해양공학회지, 2020
Underwater acoustics, which is the domain that addresses phenomena related to the generation, propagation, and reception of sound waves in water, has been applied mainly in the research on the use of sound navigation and ranging (SONAR) systems for ...
Haesang Yang, Keunhwa Lee, Youngmin Choo, Kookhyun Kim   +3 more
doaj   +1 more source