Results 21 to 30 of about 2,218,138 (170)

A New Method for Acquisition of High-Resolution Seabed Topography by Matching Seabed Classification Images

Remote Sensing, 2017
The multibeam echo sounders (MBES) can acquire accurate positional but low-resolution seabed terrain and images, whereas side scan sonars (SSS) can only acquire inaccurate positional but high-resolution seabed images.
Jianhu Zhao, Junxia Meng, Hongmei Zhang, Jun Yan   +3 more
doaj   +1 more source

A Scalable, Supervised Classification of Seabed Sediment Waves Using an Object-Based Image Analysis Approach

Remote Sensing, 2021
National mapping programs (e.g., INFOMAR and MAREANO) and global efforts (Seabed 2030) acquire large volumes of multibeam echosounder data to map large areas of the seafloor.
Gerard Summers, Aaron Lim, Andrew J. Wheeler   +2 more
doaj   +1 more source

Spatial and Temporal Changes of Tidal Inlet Using Object-Based Image Analysis of Multibeam Echosounder Measurements: A Case from the Lagoon of Venice, Italy

Remote Sensing, 2020
Scientific exploration of seabed substrata has significantly progressed in the last few years. Hydroacoustic methods of seafloor investigation, including multibeam echosounder measurements, allow us to map large areas of the seabed with unprecedented ...
Lukasz Janowski, Fantina Madricardo, Stefano Fogarin, Aleksandra Kruss, Emanuela Molinaroli, Agnieszka Kubowicz-Grajewska, Jaroslaw Tegowski   +6 more
doaj   +1 more source

Applying a Multi-Method Framework to Analyze the Multispectral Acoustic Response of the Seafloor

Frontiers in Remote Sensing, 2022
Improvements to acoustic seafloor mapping systems have motivated novel marine geological and benthic biological research. Multibeam echosounders (MBES) have become a mainstream tool for acoustic remote sensing of the seabed.
Pedro S. Menandro, Alex C. Bastos, Benjamin Misiuk, Craig J. Brown   +3 more
doaj   +1 more source

A Multispectral Bayesian Classification Method for Increased Acoustic Discrimination of Seabed Sediments Using Multi-Frequency Multibeam Backscatter Data

Geosciences, 2018
Multi-frequency backscatter data collected from multibeam echosounders (MBESs) is increasingly becoming available. The ability to collect data at multiple frequencies at the same time is expected to allow for better discrimination between seabed ...
Timo C. Gaida, Tengku Afrizal Tengku Ali, Mirjam Snellen, Alireza Amiri-Simkooei, Thaiënne A. G. P. van Dijk, Dick G. Simons   +5 more
doaj   +1 more source

Seabed Sediment Classification for Sonar Images Based on Deep Learning [PDF]

, 2022
Along with the development of sonar technology, the detection accuracy and stability of sonar have been improved. A large amount of seabed sediment information can be obtained through sonar detection.
Li, Xu, Chen, Mo, Yao, Chunlong, Shen, Lan, Shi, Yuhong   +4 more
core  

Multifrequency backscatter classification of seabed sediments using MBES: an integrated approach with ground-truth validation

Frontiers in Marine Science
Accurate seabed sediment classification is essential for mapping marine geological features, assessing benthic habitat, and planning coastal infrastructure.
Moonsoo Lim, Jeongwon Kang, Sunhee Hwang, Eunho Jung, Byung-Cheol Kum, Jongsin Kim   +5 more
doaj   +1 more source

Making Value‐Chain Risks Visible: Extending ENCORE for Systemic Insights

Business Strategy and the Environment, EarlyView.
ABSTRACT Businesses in all sectors, including downstream segments, depend on biodiversity and the ecosystem services it sustains, yet firms also exert pressures that accelerate biodiversity loss. The latter generates material risks for both companies and their financial stakeholders.
Hjalmar Funke, Emmy Wassénius, Beatrice Crona, Christophe Christiaen   +3 more
wiley   +1 more source

A Characterisation of Benthic Currents from Seabed Bathymetry: An Object-Based Image Analysis of Cold-Water Coral Mounds

Remote Sensing, 2022
Seabed sedimentary bedforms (SSBs) are strong indicators of current flow (direction and velocity) and can be mapped in high resolution using multibeam echosounders.
Gerard Summers, Aaron Lim, Andrew J. Wheeler   +2 more
doaj   +1 more source

Peroxodisulfate‐Enhanced Leaching of Deep‐Sea Manganese Crusts and Sulfides

Chemie Ingenieur Technik, EarlyView.
Ammonium peroxodisulfate enables efficient leaching of deep‐sea manganese crusts and massive sulfides while offering electrolytic recycling. High leaching yields for V, Mn, Co, Mo, Sn, and W, along with complete leaching of As and Sb, highlight its potential as a powerful and sustainable oxidant for marine resource processing.
Bastian Hansel, Lucas Thumeyer, Ebbe H. Hartz, Håvard Hallås Stubseid, Peter Fröhlich, Martin Bertau   +5 more
wiley   +1 more source