Results 51 to 60 of about 27,061 (245)

Understanding the marine environment : seabed habitat investigations of the Dogger Bank offshore draft SAC [PDF]

, 2009
This report details work carried out by the Centre for Environment, Fisheries and Aquaculture Science (Cefas), British Geological Surveys (BGS) and Envision Ltd. for the Joint Nature Conservation Committee (JNCC).
Diesing, Markus, Forster, Rodney, Foster-Smith, Bob, Long, David, Morando, Angela, Stewart, Heather, Vanstaen, Koen, Ware, Susanne   +7 more
core  

Ngos' Contributions to Innovation: Innovation Enablers or Lead Innovators?

Corporate Social Responsibility and Environmental Management, EarlyView.
ABSTRACT This study explores how non‐governmental organisations (NGOs) engage with innovation processes. Drawing on a comparative case study of two NGOs working in water sustainability, the paper analyses NGO involvement across seven stages of the innovation process.
Maria Cristina Pietronudo, Lorenza Claudio, Chiara Cannavale, Marco Ferretti   +3 more
wiley   +1 more source

Polytraits : a database on biological traits of marine polychaetes [PDF]

, 2014
The study of ecosystem functioning – the role which organisms play in an ecosystem – is becoming increasingly important in marine ecological research. The functional structure of a community can be represented by a set of functional traits assigned to ...
Arvanitidis, Christos, Chatzigeorgiou, Georgios, Chatzinikolaou, Eva, Dailianis, Thanos, Fanini, Lucia, Faulwetter, Sarah, Keklikoglou, Kleoniki, Koulouri, Panayota, Markantonatou, Vasiliki, Pafilis, Evangelos, Papageorgiou, Nafsika, Pavloudi, Christina, Vasileiadou, Katerina   +12 more
core   +4 more sources

Quantification of rheological parameters in deep‐sea mining plumes

Deep Underground Science and Engineering, EarlyView.
This study explores the variations in rheological properties observed during the propagation of deep‐sea mining plumes, utilizing rheological test data obtained from kaolin clay plumes. Subsequently, taking into account the differences in sediment properties, the effects of clay content and clay mineral composition on the rheological parameters of ...
Xiaolei Liu, Yihan Liu, Yonggang Jia, Xingsen Guo   +3 more
wiley   +1 more source

SEAFLOOR MAPPING FROM MULTISPECTRAL MULTIBEAM ACOUSTIC DATA AT THE EUROPEAN OPEN SCIENCE CLOUD [PDF]

The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2020
Recent technological advances in the underwater sensing instrumentation provide currently active multibeam echosounders that can acquire backscatter observations from multiple spectral frequencies. In this paper, the main objective was to design, develop
P. Mertikas, K. Karantzalos, K. Karantzalos   +2 more
doaj   +1 more source

Acoustic seabed classification using fractional Fourier transform

SPIE Proceedings, 2006
In this paper we present a time-frequency approach for acoustic seabed classification. Work reported is based on sonar data collected by the Volume Search Sonar (VSS), one of the five sonar systems in the AN/AQS-20. The Volume Search Sonar is a beamformed multibeam sonar system with 27 fore and 27 aft beams, covering almost the entire water volume ...
Madalina Barbu, Edit J. Kaminsky, Russell E. Trahan   +2 more
openaire   +2 more sources

Efficient Approach for OS-CFAR 2D Technique Using Distributive Histograms and Breakdown Point Optimal Concept applied to Acoustic Images [PDF]

, 2019
In this work, a new approach to improve the algorithmic efficiency of the Order Statistic-Constant False Alarm Rate (OS-CFAR) applied in two dimensions (2D) is presented.
Acosta, Gerardo Gabriel, Menna, Bruno Victorio, Torcida, Sebastián, Villar, Sebastian Aldo   +3 more
core   +2 more sources

Data‐driven analysis of the spatial dependence of grouting efficiency during tunnel excavation

Deep Underground Science and Engineering, EarlyView.
Prediction of grouting efficiency using machine learning is enhanced by adopting a training strategy that accounts for the grouting process across multiple rounds. Abstract Grouting with water–cement mixtures is the most widely used and cost‐effective method for managing excess water inflow during tunnel construction.
Huaxin Liu, Xunchang Fei, Wei Wu
wiley   +1 more source

CLASSIFICATION OF DATA FROM AIRBORNE LIDAR BATHYMETRY WITH RANDOM FOREST ALGORITHM BASED ON DIFFERENT FEATURE VECTORS [PDF]

The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2019
Modern full-waveform laser bathymetric scanners offer the possibility of a practical application of airborne laser bathymetry (ALB) data algorithms as a valuable source of information in the study of the aquatic environment.
T. Kogut, M. Weistock, K. Bakuła
doaj   +1 more source

Unsupervised Optical Classification of the Seabed Color in Shallow Oligotrophic Waters from Sentinel-2 Images: A Case Study in the Voh-Koné-Pouembout Lagoon (New Caledonia)

Remote Sensing, 2022
Monitoring chlorophyll-a concentration or turbidity is crucial for understanding and managing oligo- to mesotrophic coastal waters quality. However, mapping bio-optical components from space in such shallow settings remains challenging because of the ...
Guillaume Wattelez, Cécile Dupouy, Farid Juillot   +2 more
doaj   +1 more source