相关实验视频

Updated: Jul 3, 2025

Scattering And Absorption of Light in Planetary Regoliths

Scattering And Absorption of Light in Planetary Regoliths

Published on: July 1, 2019

使用分光束回声探测器测量岩石海底的散射

Jen A Gruber¹, Derek R Olson¹

¹Oceanography Department, Naval Postgraduate School, Monterey, California 93943, USAjenillee.pajewski@gmail.com, derek.olson@nps.edu.

JASA express letters

|February 11, 2024

概括

来自花岩海底的声学散射被测量在200kHz. 洛梅尔-西利格模型准确地描述了散射强度,配备的参数为-18.4dB.

科学领域:

海洋声学海洋声学
海洋地质学海洋地质学
海底特征的描述

背景情况:

了解海底声学特性对于海洋调查至关重要.
破碎的花岩环境存在复杂的散射挑战.
之前的研究往往缺乏详细的角散射数据.

研究的目的:

测量来自破碎的花岩海底的声波散射强度.
评估Lommel-Seeliger模型对这种环境的适用性.
为了呈现无声化的角度宽度数据.

主要方法:

声波散射测量是在加利福尼亚州太平洋谷200kHz进行的.
使用惯性传感器和分光束传感器.
信号处理提取了相关的回声数据和放牧角度.

主要成果:

在一系列的放牧角度确定了散射强度.
实证的Lommel-Seeliger模型显示了与测量数据的良好匹配.
获得了一个 -18.4 dB 的模型参数.

结论:

洛梅尔-西利格模型有效地描述了碎花岩的声学散射.
精确的分散强度测量需要仔细考虑放牧角度.
这项研究为复杂海底地形的声学建模提供了宝贵的数据.

更多相关视频

Measuring the Structure, Composition, and Change of Underwater Environments with Large-area Imaging

Measuring the Structure, Composition, and Change of Underwater Environments with Large-area Imaging

Published on: April 18, 2025

$Synchrotron X-ray Microdiffraction and Fluorescence Imaging of Mineral and Rock Samples$ 10:12

Synchrotron X-ray Microdiffraction and Fluorescence Imaging of Mineral and Rock Samples

Published on: June 19, 2018

相关概念视频

Scanning Electron Microscopy

Scanning Electron Microscopy

A scanning electron microscope (SEM) is used to study the surface features of a sample by using an electron beam that scans the sample surface in a two-dimensional manner. Typically, areas between ~1 centimeter to 5 micrometers in width can be imaged. SEM can be used to image bacteria, viruses, tissues as well as larger samples like insects. Conventional SEM gives a magnification ranging from 20X to 30,000X and spatial resolution of 50 to 100 nanometers.
Fundamental Principles
Accelerated...