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Mercury Isotope Composition in Open Water Corals of South China Sea: Implication for Atmospheric Mercury Deposition Pathways Into Tropical Oceans

open access: yesGeophysical Research Letters, 2023
The deposition of different atmospheric mercury (Hg) species into oceans determines the atmospheric Hg lifetime and the production of neurotoxin methylmercury. Yet, the relative contribution of atmospheric Hg(II) and Hg(0) is largely unconstrained. Here,
Rui Zhang   +9 more
doaj   +1 more source

Characteristics and patterns of marine debris in the Chinese beach-sea continuum

open access: yesFrontiers in Marine Science, 2022
The amounts of marine debris and plastic pollution have been growing dramatically in the environment. Floating marine debris can be transported between the sea and coastal zone by various processes. However, it remains unknown if marine debris in the sea
Xiaoguang Ouyang   +3 more
doaj   +1 more source

On Doppler Shifts of Breaking Waves

open access: yesRemote Sensing, 2023
Field-tower-based observations were used to estimate the Doppler velocity of deep water plunging breaking waves. About 1000 breaking wave events observed by a synchronized video camera and dual-polarization Doppler continuous-wave Ka-band radar at ...
Yury Yu. Yurovsky   +3 more
doaj   +1 more source

Statistical modeling of the sea surface in the presence of abnormal waves [PDF]

open access: yesE3S Web of Conferences, 2023
A wide range of fundamental and applied problems requires a detailed description of the statistics of abnormal sea waves (freak waves or rouge waves). These waves are characterized not only by a change in ener-gy, but also by strong nonlinearity, leading
Zapevalov A., Knyazkov A.
doaj   +1 more source

Investigation of Electromagnetic Scattering Mechanisms from Dynamic Oil Spill–Covered Sea Surface

open access: yesRemote Sensing, 2023
The electromagnetic (EM) scattering mechanism of dynamic oil spill–covered sea surface area is studied in this manuscript. Utilizing the theory of oil film diffusion combined with oil spill volume, a three–dimensional (3D) geometric model of dynamic oil ...
Dongfang Li   +3 more
doaj   +1 more source

New Features of Bragg and Non-Polarized Radar Backscattering from Film Slicks on the Sea Surface

open access: yesJournal of Marine Science and Engineering, 2022
Suppression of radar backscattering from the sea surface has been studied in field experiments with surfactant films carried out from an Oceanographic Platform on the Black Sea and from onboard a research vessel on the Gorky Water Reservoir using an X-C ...
Stanislav Aleksandrovich Ermakov   +6 more
doaj   +1 more source

CHARACTERISTICS OF SEA SURFACE SCATTERING ELEMENTS UPON RADIO WAVES PROPAGATION AT SMALL GRAZING ANGLES [PDF]

open access: yesРадиофизика и электроника, 2019
Subject and purpose. The article is devoted to the simulation of the backscattering of the electromagnetic field on the sea surface in respect to the millimeter and centimeter ranges of radio wavelengths.
V. G. Gutnik   +2 more
doaj   +1 more source

Optimization of the NRCS Sampling at the Sea Wind Retrieval by the Airborne Rotating-Beam Scatterometer Mounted under Fuselage

open access: yesSensors, 2022
The optimization of normalized radar cross-section (NRCS) sampling by a scatterometer allows an increase in the accuracy of the wind retrieval over the water surface and a decrease in the time of the measurement.
Alexey Nekrasov   +2 more
doaj   +1 more source

Limiting Accuracy of Height Measurement for a Precision Radar Altimeter in a Low Altitude Flying Vehicle above the Sea Surface

open access: yesRemote Sensing, 2021
This study presents mathematical analysis and numerical modeling for the estimation of measurement errors of height estimation over the sea surface for a precision radar altimeter installed in a low altitude flying vehicle.
Aleksandr I. Baskakov   +3 more
doaj   +1 more source

Simulation of a Wideband Radar Echo of a Target on a Dynamic Sea Surface

open access: yesRemote Sensing, 2021
Unlike a generally rough ground surface, the sea surface varies over time. To analyze the impact of the motion of sea waves on the synthetic aperture radar (SAR) image of a target, the wideband echo simulation method based on a frequency domain is used ...
Wang-Qiang Jiang   +4 more
doaj   +1 more source

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