Application of a Passive Acoustic Method for Detection and Estimation of Shallow-Water Bubble Gas Emissions
- 作者: Budnikov A.1, Malakhova T.2, Ivanova I.1, Linchenko E.3
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隶属关系:
- Department of Physics
- A.O. Kovalevsky Institute of Biology of the Southern Seas
- Sevastopol Branch
- 期: 卷 74, 编号 6 (2019)
- 页面: 690-696
- 栏目: Physics of Earth, Atmosphere, and Hydrosphere
- URL: https://journals.rcsi.science/0027-1349/article/view/165276
- DOI: https://doi.org/10.3103/S0027134919060109
- ID: 165276
如何引用文章
详细
A passive acoustic method for estimating the flow of underwater bubble gas emissions for shallow water areas has been proposed and tested. The method is based on the connection between the frequency of the acoustic signal produced by a gas bubble when it separates from the underwater outlet channel and the size of the bubble. In the conducted laboratory experiments acoustic signals with frequencies in the range from 2.7 to 0.4 kHz were recorded during generation of bubbles with a size from 2 to 15 mm within the fluid. The analysis of acoustic recordings made near existing shallow-water seeps in Laspi Bay showed a series of short audio signals produced by the released methane bubbles of 0.5–2s duration, grouped into packages containing approximately ten pulses. For the two investigated seeps, the frequency peaked at 1 and 1.4 kHz. According to a theoretical estimate, the bubbles generating such a signal are 7 and 5 mm in diameter, respectively. Taking the intensity of the bubble discharge into account, the calculated gas flows were 40 and 6 liters per day, respectively.
作者简介
A. Budnikov
Department of Physics
编辑信件的主要联系方式.
Email: aa.budnikov@physics.msu.ru
俄罗斯联邦, Moscow, 119991
T. Malakhova
A.O. Kovalevsky Institute of Biology of the Southern Seas
编辑信件的主要联系方式.
Email: t.malakhova@imbr-ras.ru
俄罗斯联邦, Sevastopol, 299011
I. Ivanova
Department of Physics
编辑信件的主要联系方式.
Email: ivair@yandex.ru
俄罗斯联邦, Moscow, 119991
E. Linchenko
Sevastopol Branch
Email: ivair@yandex.ru
俄罗斯联邦, Sevastopol, 299001