A Study of Gravitational Wave Attenuation in Fragmented Ice

IF 0.6 4区物理与天体物理 Q4 ASTRONOMY & ASTROPHYSICS Cosmic Research Pub Date : 2024-02-27 DOI:10.1134/s0010952523700673

G. E. Khazanov, S. A. Ermakov, V. A. Dobrokhotov, G. V. Leshchev, A. V. Kupaev, O. A. Danilicheva

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Abstract

Sea ice in its initial formation stages in the nearshore zone can exist in various forms such as grease ice, snow sludge, and pancake ice. These initial ice forms (IIFs) lead to the attenuation of waves on the sea surface, consequently affecting the intensity of microwave scattering on the sea surface. This complicates the identification of areas covered by IIFs that are situated between consolidated ice and open water. This work aims to analyze wave propagation in the presence of IIFs to develop physical models of wave attenuation. The paper presents a description and results of special field experiments to investigate the attenuation of wind waves of various lengths in the presence of ice simulators. Results of numerical simulation of the attenuation of gravitational waves and a comparison with experimental results are also given. One of the significant findings in the studied dependence of the attenuation coefficient on the ice floe size-to-wave length ratio, observed in both field and numerical experiments, is the discovery of a local maximum for waves with lengths of the order of the “ice floe” size. A physical interpretation of the mechanism of gravitational wave attenuation in the presence of ice floes is proposed, taking into account their attached mass.

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碎冰中的引力波衰减研究

摘要近岸海域的海冰在形成初期有多种形态，如脂冰、雪泥和薄冰。这些初始冰形态（IIFs）会导致海面上的波衰减，从而影响海面上的微波散射强度。这使得识别位于坚冰和开阔水域之间的 IIFs 覆盖区域变得更加复杂。这项工作旨在分析存在 IIFs 时的波传播，以建立波衰减的物理模型。论文介绍了为研究冰模拟器存在时不同长度风浪的衰减情况而进行的特殊现场实验的描述和结果。还给出了引力波衰减的数值模拟结果以及与实验结果的比较。在实地和数值实验中观察到的衰减系数与浮冰大小-波长比的关系研究的重要发现之一，是发现了长度为 "浮冰 "大小数量级的波的局部最大值。考虑到浮冰的附着质量，提出了对浮冰存在时引力波衰减机制的物理解释。

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来源期刊

Cosmic Research 地学天文-工程：宇航

CiteScore

1.10

自引率

33.30%

发文量

审稿时长

6-12 weeks

期刊介绍： Cosmic Research publishes scientific papers covering all subjects of space science and technology, including the following: ballistics, flight dynamics of the Earth’s artificial satellites and automatic interplanetary stations; problems of transatmospheric descent; design and structure of spacecraft and scientific research instrumentation; life support systems and radiation safety of manned spacecrafts; exploration of the Earth from Space; exploration of near space; exploration of the Sun, planets, secondary planets, and interplanetary medium; exploration of stars, nebulae, interstellar medium, galaxies, and quasars from spacecraft; and various astrophysical problems related to space exploration. A chronicle of scientific events and other notices concerning the main topics of the journal are also presented.