Results 71 to 80 of about 4,257,836 (266)

Review of the Salpausselkä ice‐marginal formations in Finland

Journal of Quaternary Science, EarlyView.
ABSTRACT Extensive Salpausselkä ice‐marginal formations were deposited in southern and eastern Finland during the Weichselian deglaciation. These comprise three major ridges (I, II, and III Salpausselkäs) and their eastern counterparts (Tuupovaara, Koitere, and Pielisjärvi), together forming laterally continuous ice‐marginal formations extending ...
Jukka‐Pekka Palmu, Jussi Hovikoski, Reijo Pitkäranta, Antti E. K. Ojala   +3 more
wiley   +1 more source

Deriving Wave Height Using Image Shadow Feature and Extracted Principal Component

Information
Benefiting from the merit of independent calibration without external reference, the shadow feature is investigated to retrieve wave steepness and wave height from X-band marine radar images. However, the wave period is currently required.
Yang Meng, Jinda Wang, Tao Zhou, Fei Niu, Yanbo Wei   +4 more
doaj   +1 more source

Sea Clutter Reduction and Target Enhancement by Neural Networks in a Marine Radar System

Sensors, 2009
The presence of sea clutter in marine radar signals is sometimes not desired. So, efficient radar signal processing techniques are needed to reduce it.
José Carlos Nieto-Borge, Manuel Rosa-Zurera, Rubén Carrasco-Álvarez, Raúl Vicen-Bueno   +3 more
doaj   +1 more source

High resolution seismic and ground penetrating radar-geophysical profiling of a thermokarst lake in the western Lena Delta, Northern Siberia [PDF]

, 2002
High resolution seismic and ground-penetrating radar (GPR) have been acquired over Lake Nikolay in the western Lena Delta (Siberia) in order to study the uppermost basin fill and the bordering frozen margins. GPR measurements were completed on the frozen
Dix, J.K., Rachold, V., Schwamborn, Georg, Bull, J.M., Bull, J. M., Dix, J. K., Schwamborn, G.J., Rachold, Volker   +7 more
core   +1 more source

A Sequential One‐Pot Block Copolymer Synthesis: Toward Mesoporous Carbon Materials for Selective CO2 Adsorption

Macromolecular Rapid Communications, EarlyView.
A sequential one‐pot photo‐iniferter RAFT method greatly simplifies the synthesis of PAN‐based block copolymers, offering quick access to hierarchically porous, N‐doped carbon membranes. This scalable and reliable process allows for easy fabrication of functional materials important for carbon capture applications.
Björn Schmidt, Stefan Heißler, Alexei Nefedov, Jakob Becker, Udo Geckle, Simon Buchheiser, Frank Rhein, Tao Chen, Patrick Théato, Martina Plank   +9 more
wiley   +1 more source

Adaptive Enhancement of X-Band Marine Radar Imagery to Detect Oil Spill Segments

Sensors, 2017
Oil spills generate a large cost in environmental and economic terms. Their identification plays an important role in oil-spill response. We propose an oil spill detection method with improved adaptive enhancement on X-band marine radar systems.
Peng Liu, Ying Li, Jin Xu, Xueyuan Zhu
doaj   +1 more source

Digital surveillance of animals and nature recovery

People and Nature, EarlyView.
Abstract Digital surveillance technologies (DSTs) are widely applied in nature recovery for their potential to generate novel data on species and ecosystems through digital tracking, automation (e.g. from hazardous locations) and from newly recruited citizen scientists.
William M. Adams
wiley   +1 more source

Combined Effects of Thermal Cycling Aging and Reinforcement Content on the Ball‐On‐Disk Wear of Additively Manufactured Polylactic Acid Composites

Polymer Composites, EarlyView.
Thermal Aging and Tribological Tests of Additive Manufactured PLA Composites. ABSTRACT This study focuses on the additive manufacturing of pure polylactic acid (PLA) specimens and milled glass fiber (GF)‐filled PLA composites under thermal cycling aging and wear tests. Wear tracks have been analyzed via 3D optical profiling and SEM imaging.
Sinan Fidan, Satılmış Ürgün, Nevin Gamze Karsli, Taner Yilmaz, Mustafa Özgür Bora, Mehmet İskender Özsoy   +5 more
wiley   +1 more source

Impact of fragmented urbanization on observed precipitation

Quarterly Journal of the Royal Meteorological Society, EarlyView.
This study investigates the impact of fragmented urban landscapes on downwind precipitation by applying an innovative observation‐centered approach to an extensive rain gauge network in Belgium. The approach classifies the observations based on the upwind urban land cover fraction, and compares precipitation indices between rural‐ and urban‐labeled ...
Amber Jacobs, Kwinten Van Weverberg, Steven Caluwaerts   +2 more
wiley   +1 more source

Marine Radar Oil Spill Monitoring Method Based on YOLOv11 and Improved NGO Algorithm

Remote Sensing
To address the urgent need for rapid detection and precise segmentation of oil spill incidents, a cascaded processing framework integrating the YOLOv11 model with an enhanced Northern Goshawk Optimization (NGO) algorithm is proposed.
Jin Xu, Yuanyuan Huang, Jin Yan, Zekun Guo, Bo Li, Haihui Dong, Peng Liu   +6 more
doaj   +1 more source