Results 71 to 80 of about 32,801 (229)

Multibeam echo grid simulator

open access: yes, 2023
This repository contains the simulation code (python) for reproducing the results of the accepted paper "Echo grid integration: A novel method for preprocessing multibeam water column data to quantify underwater gas bubble emissions." by Urban et.
Urban, Peter, Peschke, Eva
core   +1 more source

Early results and lessons learned from biomanipulation and chemical restoration of a eutrophic shallow lake

open access: yesRestoration Ecology, EarlyView.
Abstract Introduction Over 44% of European lakes fail to meet ecological quality standards, prompting substantial investment in lake restoration to achieve good ecological status. Unfortunately, effects are often short‐lived due to persistent internal phosphorus (P) loading and strong cyprinid‐driven bottom‐up control, which limits water quality ...
Emma Polauke   +3 more
wiley   +1 more source

Acoustic evidence of hydrocarbon release associated with the Spitsbergen Transform Fault, north of the Molloy Ridge, Fram Strait

open access: yesFrontiers in Earth Science
Hydrocarbon gases formed from biotic and abiotic processes are released through the seafloor at different locations around the world. They have been widely observed directly in video and photo data, and indirectly on echosounder data.
Shyam Chand   +5 more
doaj   +1 more source

Multibeam for Joint Communication and Radar Sensing Using Steerable Analog Antenna Arrays [PDF]

open access: yesIEEE Transactions on Vehicular Technology, 2018
Beamforming has a great potential for joint communication and radar sensing (JCAS), which is becoming a demanding feature on many emerging platforms, such as unmanned aerial vehicles and smart cars.
J. A. Zhang   +4 more
semanticscholar   +1 more source

In Situ Two‐Dimensional Residual Stress Characterization of Thin Films

open access: yesAdvanced Materials Technologies, Volume 11, Issue 19, 7 October 2026.
An integrated in situ curvature metrology platform combining speckle‐based curvature optical metrology (SCOM) with multi‐beam optical sensors (MOS) enables spatially resolved two‐dimensional curvature mapping of thick sputtered coatings. The SCOM technique provides excellent agreement with MOS while providing an extended measurable curvature range ...
Wai Jue Tan   +6 more
wiley   +1 more source

Swath sonar multibeam EM120 bathymetry during METEOR cruise M72/3 with links to raw data files

open access: yes, 2013
Multibeam data were collected during R/V Meteor cruise M72/3 leading to easterly Black Sea. Multibeam sonar system was Kongsberg Simrad EM-120. Data are unprocessed and may contain outliers and blunders and should not be used for grid calculations and ...
Nikolovska, Aneta   +9 more
core   +1 more source

The Aurora Vent Field at the Transition From Magmatic Accretion to Tectonic Extension on Gakkel Ridge: Constraints From Microseismicity and Aeromagnetic Observations

open access: yesGeochemistry, Geophysics, Geosystems, Volume 27, Issue 10, October 2026.
Abstract The Aurora hydrothermal vent field (AVF) is the first confirmed active vent system on the Arctic Ocean seafloor, located at the western end of the ultraslow spreading Gakkel Ridge. It marks a distinctive endmember among ridge‐axis hydrothermal systems, where volcanic construction and ultramafic influence co‐exist.
Matthias Pilot   +3 more
wiley   +1 more source

Multibeam Characteristics of a Negative Refractive Index Shaped Lens

open access: yesSensors, 2020
Narrow beam width, higher gain and multibeam characteristics are demanded in 5G technology. Array antennas that are utilized in the existing mobile base stations have many drawbacks when operating at upper 5G frequency bands. For example, due to the high
Salbiah Ab Hamid   +4 more
doaj   +1 more source

Variability of Natural Methane Bubble Release at Southern Hydrate Ridge

open access: yesGeochemistry, Geophysics, Geosystems, 2021
Current estimations of seabed methane release into the ocean (0.4–48 Tg yr−1) are based on short‐term observations and implicitly assume that fluxes are constant over time.
Yann Marcon   +4 more
doaj   +1 more source

Tectonic Evolution of the Mariana Trough

open access: yesJournal of Geophysical Research: Solid Earth, Volume 131, Issue 10, October 2026.
Abstract The Mariana Trough is an active back‐arc basin formed by subduction of the Pacific Plate beneath the Philippine Sea Plate and provides an ideal setting for investigating the evolution of back‐arc basins. In this study, we compile bathymetric, magnetic, and gravity data to reconstruct the formation history of the entire basin.
Seitaro Ono   +4 more
wiley   +1 more source

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