海底冷泉区气泡流量流速的声学探测机理研究

doi:10.11978/2015112

热带海洋学报 ›› 2016, Vol. 35 ›› Issue (4): 35-39.doi: 10.11978/2015112CSTR: 32234.14.2015112

海底冷泉区气泡流量流速的声学探测机理研究

秦华伟¹, 范相会¹, 蔡真², 叶彦雷³

1. 杭州电子科技大学海洋工程学院, 浙江杭州 310018;
2. 浙江大学海洋学院, 浙江杭州 310018;
3. 中国科学技术大学工程科学学院, 安徽合肥 230000

收稿日期:2015-08-24 出版日期:2016-07-29 发布日期:2016-08-04
通讯作者: 范相会。E-mail: 983563241@qq.com
作者简介:秦华伟(1976—), 男, 山西省长治市人, 教授, 主要从事海洋机电装备研究。E-mail: qinhw@hdu.edu.cn
基金资助:
国家自然科学基金重点项目 (41276092)

Acoustic detection of flow rate and flux of bubbles in cold spring area of the ocean

QIN Huawei¹, FAN Xianghui¹, CAI Zhen², YE Yanlei³

l. School of Mechanical Engineering, Hangzhou Dianzi University, Hangzhou 310018, China;
2. Ocean College, Zhejiang University, Hangzhou 310018, China;
3. University of Science and Technology of China, Hefei 230000, China

Received:2015-08-24 Online:2016-07-29 Published:2016-08-04
Contact: FAN Xianghui. E-mail: 983563241@qq.com
Supported by:
National Natural Science Foundation (41276092)

摘要/Abstract

摘要： 海洋冷泉区常含有巨大资源前景和引发环境灾害的天然气水合物, 并发育有依赖于流体化学自养能和养分的特异生物群, 研究其泄漏气体的流量和流速, 具有重要的资源和环境意义。冷泉区存在大量气泡幕, 首先根据声波穿过气泡幕时会产生强烈衰减的特征, 对穿过不同气泡流量的声波进行探测, 得到气泡流量和声波衰减呈线性比例关系; 其次, 利用相关流量法对放置于不同深度的两路接收信号进行互相关分析, 计算出气泡流的上升速度。在此基础上通过声学探测所得声波幅值, 反演出气泡流量; 并由气泡的上升速度和流量得出气泡的分布范围, 为海洋冷泉区气泡流速流量探测提供了新的方法。

关键词: 冷泉泄漏, 气泡幕, 声学探测, 相关流量法

Abstract: There are great quantities of natural gas hydrate beneath seawater, which are giant resources potentially and capable of damaging environment; and special species is also discovered in related area. So, the detection and quantification of an underwater gas release are becoming increasingly important for oceanographic and industrial applications. According to the characters of acoustic attenuation when acoustic wave propagates through bubbles, detection of different flow rate of bubbles was conducted, and result of the relation of bubbles flow rate and acoustic attenuation was presented. In addition, the rising velocity of bubbles was estimated using the relate flow method of two signals received at different depths. Then, the flux of bubbles was inversed by acoustic signal, and the bubble distribution was calculated by the rising velocity and flux, which provided a new method for detection and quantification of undersea bubbles.

Key words: leakage of cold spring, bubble film, acoustic detection, relative flux method

中图分类号:

P733.23

秦华伟, 范相会, 蔡真, 叶彦雷. 海底冷泉区气泡流量流速的声学探测机理研究[J]. 热带海洋学报, 2016, 35(4): 35-39.

QIN Huawei, FAN Xianghui, CAI Zhen, YE Yanlei. Acoustic detection of flow rate and flux of bubbles in cold spring area of the ocean[J]. Journal of Tropical Oceanography, 2016, 35(4): 35-39.

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海底冷泉区气泡流量流速的声学探测机理研究

Acoustic detection of flow rate and flux of bubbles in cold spring area of the ocean

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