Acoustics is most effective in undersea detection, localization, and communication. Establishment of a global climatological dataset of undersea acoustic parameters becomes urgent. In building such a dataset, first we use the Thermodynamic Equation of Seawater-2010 (TEOS-10) to calculate the sound speed (SS) from the gridded temperature and salinity fields of the NOAA/NCEI World Ocean Atlas 2023. Second, we determine the depth of overall minimum from SS profile as the deep sound channel (DSC) axis depth, the depth of overall maximum between the surface and DSC axis as the sonic layer depth (SLD), the depth of the local minimum between SLD and DSC axis as the second sound channel (SSC) depth, and the depth with the SS equalling the maximum SS as the critical depth. Third, we obtain the SS at the surface, SLD, DSC axis, and SSC axis. Fourth, we determine the other acoustic parameters such as In-layer gradient, below layer gradient, DSC strength, SSC strength, depth excess, and surface duct cut-off frequency. The dataset is publicly available.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC11605126 | PMC |
| http://dx.doi.org/10.1038/s41597-024-04074-6 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
The swelling behaviour of hair studied through the structural change of keratin protein during the permanent waving treatment.
Biophys Chem
November 2024
College of Science and Technology, Nihon University, 1-8-14 Kanda-surugadai, Chiyoda-ku, Tokyo 101-8308, Japan.
Filament of human hair is formed from α-keratin protein and its physical property is predominantly dominated by the structure of microfibril (also known as intermediate filaments (IF)). It is known that human hair is swollen by permanent waving (pw) treatment which consists of the reducing process and following oxidizing process, but a detail in the swelling behaviour remains still unclarified. The present work was devoted to the analysis of the swelling behaviour of hair through the structural change of IF during pw treatment, where 1.
View Article and Find Full Text PDFGlobal climatological dataset of undersea acoustic parameters derived from the NCEI World Ocean Atlas 2023.
Sci Data
November 2024
Department of Oceanography, Naval Postgraduate School, Monterey, CA, 93943, USA.
Acoustics is most effective in undersea detection, localization, and communication. Establishment of a global climatological dataset of undersea acoustic parameters becomes urgent. In building such a dataset, first we use the Thermodynamic Equation of Seawater-2010 (TEOS-10) to calculate the sound speed (SS) from the gridded temperature and salinity fields of the NOAA/NCEI World Ocean Atlas 2023.
View Article and Find Full Text PDFU-Net and Its Variants Based Automatic Tracking of Radial Artery in Ultrasonic Short-Axis Views: A Pilot Study.
Diagnostics (Basel)
October 2024
Department of Biomedical Engineering, College of Chemistry and Life Science, Beijing University of Technology, Beijing 100124, China.
Radial artery tracking (RAT) in the short-axis view is a pivotal step for ultrasound-guided radial artery catheterization (RAC), which is widely employed in various clinical settings. To eliminate disparities and lay the foundations for automated procedures, a pilot study was conducted to explore the feasibility of U-Net and its variants in automatic RAT. Approved by the institutional ethics committee, patients as potential RAC candidates were enrolled, and the radial arteries were continuously scanned by B-mode ultrasonography.
View Article and Find Full Text PDFIsolation and Characterization of Novel Cellulose Micro/Nanofibers from Through a Chemo-Mechanical Process.
Polymers (Basel)
October 2024
Institute of Chemical Technology and Engineering, Faculty of Chemical Technology, Poznan University of Technology, Berdychowo 4, PL-60965 Poznan, Poland.
Recent studies have focused on the development of bio-based products from sustainable resources using green extraction approaches, especially nanocellulose, an emerging nanoparticle with impressive properties and multiple applications. Despite the various sources of cellulose nanofibers, the search for alternative resources that replace wood, such as , a fast-growing Mediterranean plant, is crucial. It has not been previously investigated as a potential source of nanocellulose.
View Article and Find Full Text PDFReport of in a non-captive chital (Erxleben 1777) in Santa Catarina, South of Brazil.
Braz J Vet Med
September 2024
Veterinarian, DSc., Curso de Medicina Veterinária, UNOESC. São Miguel do Oeste, SC. Brazil.
Article Synopsis
- * This report details the case of a Chital deer infected with Giardia, which was rescued and brought to a wildlife center for treatment but unfortunately died shortly after arrival.
- * The findings emphasize the zoonotic potential of Giardia, as invasive species like the Chital deer may spread the parasite to humans and other animals, raising concerns for disease control.
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!