Results 71 to 80 of about 1,071 (166)

Multiscale Bayes Adaptive Threshold Wavelet Transform Geomagnetic Basemap Denoising Taking Residual Constraints into Account

Sensors
To achieve high-precision geomagnetic matching navigation, a reliable geomagnetic anomaly basemap is essential. However, the accuracy of the geomagnetic anomaly basemap is often compromised by noise data that are inherent in the process of data ...
Pan Xiong, Gang Bian, Qiang Liu, Shaohua Jin, Xiaodong Yin   +4 more
doaj   +1 more source

Concerning "Aerial Photo-Hydrography" [PDF]

Science, 1921
n ...
openaire   +2 more sources

High‐Resolution Particle Imaging Reveals the Importance of Phytodetrital Aggregate Flux and Mesopelagic Grazing for Carbon Storage in the Southern Ocean

Global Biogeochemical Cycles, Volume 40, Issue 8, August 2026.
Abstract The biological, chemical, and physical processes in the mesopelagic zone that impact carbon flux to the deep ocean are poorly understood, particularly in the Southern Ocean, despite their importance to deep ocean carbon storage. Using a CTD‐mounted underwater imaging system, the Underwater Vision Profiler 5, we observed distributions of large ...
S. H. O’Daly, G. M. M. Hennon, T. B. Kelly, R. Kiko, R. M. Lekanoff, J. L. Pretty, S.‐M. Schröder, A. M. P. McDonnell   +7 more
wiley   +1 more source

Benguela Upwelling Filaments Are a Significant Pathway of New Nutrients to the South Atlantic Subtropical Gyre

Journal of Geophysical Research: Oceans, Volume 131, Issue 8, August 2026.
Abstract In the transition zones between eastern boundary upwelling regions and subtropical gyres, upwelling and offshore moving filaments generated by frontal instabilities play an important role in the gyre‐ward transport of new nutrients and phytoplankton biomass. However, quantification of such transport using field data remains sparse.
Angèle Nicolas, Cláudio Cardoso, Haoran Liu, Li Qiu, Paulo H. R. Calil, Marcus Dengler, Eric P. Achterberg, Thomas J. Browning   +7 more
wiley   +1 more source

Efficient Weather Routing Method in Coastal and Island-Rich Waters Guided by Ship Trajectory Big Data

Journal of Marine Science and Engineering
Weather routing is a critical guarantee for the safe and economical navigation of ships. Existing methods for weather routing still face challenges in selecting the appropriate planning granularity.
Yinfei Zhou, Lihua Zhang, Shuaidong Jia, Zeyuan Dai   +3 more
doaj   +1 more source

Coastal Marine Carbon and Air‐Sea Fluxes Quantified From pH Sensors on an Extended AUV Deployment

Journal of Geophysical Research: Oceans, Volume 131, Issue 8, August 2026.
Abstract For the first time, the Autosub Long Range (ALR) completed a fully autonomous, long‐distance (2,000 km) scientific mission, delivering new insight into coastal carbonate dynamics and air‐sea CO2 ${\text{CO}}_{2}$ fluxes. Equipped with a suite of oceanographic sensors, including a Lab‐on‐Chip (LOC) pH sensor and a Sea‐Bird SeaFET pH sensor, the
Emily M. Hammermeister, Cathy Wimart‐Rousseau, Stathys Papadimitriou, Pablo Trucco‐Pignata, Edward Chaney, Robert Templeton, Alexander B. Phillips, Socratis Loucaides   +7 more
wiley   +1 more source

Research on Complexity Quantification Method for Multibeam Point Clouds Based on Feature Joint Entropy

Journal of Marine Science and Engineering
This study addresses the challenge of simplifying massive multibeam seafloor topographic point cloud datasets featuring significant spatial heterogeneity.
Dekun Liang, Yang Cui, Shaohua Jin, Yuan Wei, Jichuan Tan   +4 more
doaj   +1 more source

Redistribution of Sediment and Particulate Mercury Within Upstream Reaches of Galveston Bay in Response to Hurricane Harvey

Journal of Geophysical Research: Oceans, Volume 131, Issue 8, August 2026.
Abstract Extreme storms and flooding can remobilize legacy contaminants stored in the sediment bed; however, event‐scale models that resolve the transport of these materials remain underdeveloped. This study developed a numerical model of contaminated sediment transport during Hurricane Harvey (August 2017), which struck the upstream reaches of ...
Zhiyun Du, Courtney K. Harris, Roberta Southwood, Dongxiao Yin, Daoyang Bao, Fei Ye, Timothy M. Dellapenna, Kehui Xu, Z. George Xue   +8 more
wiley   +1 more source

Investigating the Impact of Spatiotemporal Variations in Water Surface Optical Properties on Satellite-Derived Bathymetry Estimates in the Eastern Mediterranean

Remote Sensing
Bathymetric data are crucial for benthic monitoring in coastal areas but are traditionally obtained through costly and geographically limited acoustic methods.
Fickrie Muhammad, Ioannis Tsimpouxis, Harald Sternberg   +2 more
doaj   +1 more source

Lethal by Design? Resolving Differences Between Experimental and Real‐World Alkalinity Perturbations in Ocean Alkalinity Enhancement

Journal of Geophysical Research: Oceans, Volume 131, Issue 8, August 2026.
Abstract Ocean alkalinity enhancement (OAE) aims to mitigate climate change by increasing the chemical capacity of seawater to store anthropogenic CO2. OAE can be implemented through multiple pathways, each of which intentionally modifies marine carbonate chemistry through increases in total alkalinity (TA).
Lennart T. Bach, Michael D. Tyka, Bin Wang, Katja Fennel   +3 more
wiley   +1 more source