Results 21 to 30 of about 3,335 (199)

A Method for Sound Speed Profile Prediction Based on CNN-BiLSTM-Attention Network

Journal of Marine Science and Engineering
In response to the current challenges in efficiently acquiring sound speed profiles and ensuring their representativeness, considering the need to fully leverage historical sound speed profiles while accounting for their spatiotemporal variability, we ...
Zhang Wei, Jin Shaohua, Bian Gang, Cui Yang, Peng Chengyang, Xia Haixing   +5 more
doaj   +1 more source

Prospects and Constraints of Lowest Astronomical Tide (LAT) as Determination of Sea Boundaries in Indonesia

Egyptian Journal of Aquatic Research, 2023
The determination of the maritime boundary is related to the selection of the tidal datum used in relation to the zero-depth reference. This research was conducted to determine the impact of the zero-depth reference that has been used, the Mean Low Water
Eka Djunarsjah, Candida A.D.S. Nusantara, Andika P. Putra, Riko A. Wijaya, Sehat S. Sianturi, Nofal M.K. Anantri, Difa Kusumadewi, Miga M. Julian   +7 more
doaj   +1 more source

Geomorphic Effects and Habitat Impacts of Large Wood at Restoration Sites in New England

River Research and Applications, EarlyView.
ABSTRACT Large wood (used interchangeably with the term “instream wood”), which refers to trees, logs and other wood within a channel, is beneficial to river ecosystems and is being used more frequently as a component of river restoration projects. We identified metrics to evaluate the effectiveness of large wood to promote ecological and geomorphic ...
Audrey J. Turcotte, Noah P. Snyder, Mathias J. Collins   +2 more
wiley   +1 more source

A Curvelet-Transform-Based Image Fusion Method Incorporating Side-Scan Sonar Image Features

Journal of Marine Science and Engineering, 2023
Current methods of fusing side-scan sonar images fail to tackle the issues of shadow removal, preservation of information from adjacent strip images, and maintenance of image clarity and contrast. To address these deficiencies, a novel curvelet-transform-
Xinyang Zhao, Shaohua Jin, Gang Bian, Yang Cui, Junsen Wang, Bo Zhou   +5 more
doaj   +1 more source

Using Trail Cameras to Monitor Culvert Connectivity in Wadeable Streams

River Research and Applications, EarlyView.
ABSTRACT Anthropogenic barriers in aquatic habitats have led to fragmentation and decreased fish diversity worldwide. Road crossing barriers such as culverts are a significant source of fragmentation and can impede aquatic organism passage (AOP). Many large extent efforts to inventory road crossing barriers and prioritize restoration efforts do not ...
Lesley Twiner, R. Daniel Hanks, Brandon K. Peoples   +2 more
wiley   +1 more source

Sample Augmentation Method for Side-Scan Sonar Underwater Target Images Based on CBL-sinGAN

Journal of Marine Science and Engineering
The scarcity and difficulty in acquiring Side-scan sonar target images limit the application of deep learning algorithms in Side-scan sonar target detection.
Chengyang Peng, Shaohua Jin, Gang Bian, Yang Cui, Meina Wang   +4 more
doaj   +1 more source

A simple method for retrieving significant wave height from Dopplerized X-band radar [PDF]

Ocean Science, 2017
Retrieving spectral wave parameters such as the peak wave direction and wave period from marine radar backscatter intensity is very well developed.
R. Carrasco, M. Streßer, J. Horstmann
doaj   +1 more source

Development and Improvement of Habitat Suitability Criteria for Instream Habitat Assessments Conducted in Support of Environmental Flows in Florida

River Research and Applications, EarlyView.
ABSTRACT Florida's regulatory framework requires the establishment of minimum flows to protect aquatic ecosystems and water resources from significant harm. One of the primary methods used to evaluate significant harm is assessment of instream habitat, which relies on Habitat Suitability Criteria (HSC) curves that relate flow regimes and habitat ...
Eric J. Nagid, Kym Rouse Holzwart
wiley   +1 more source

DBnet: A Lightweight Dual-Backbone Target Detection Model Based on Side-Scan Sonar Images

Journal of Marine Science and Engineering
Due to the large number of parameters and high computational complexity of current target detection models, it is challenging to perform fast and accurate target detection in side-scan sonar images under the existing technical conditions, especially in ...
Quanhong Ma, Shaohua Jin, Gang Bian, Yang Cui, Guoqing Liu   +4 more
doaj   +1 more source

Trace Element Contamination in Top Predatory Elasmobranchs From the Southern Black Sea: Implications for Ecosystem Health and Risk Assessment

Environmental Toxicology, EarlyView.
ABSTRACT Environmental pollution resulting from the rapid increase in human population, urbanization, intensive use of chemicals in agriculture, and industrial development has reached a level that threatens natural life today. Trace elements are one of the most important factors causing significant levels of pollution in the environment and are added ...
Levent Bat, Süleyman Özdemir, Zekiye Birinci Özdemir, Ayşah Öztekin   +3 more
wiley   +1 more source