High frequency ghost cavitation - a comparison of two seismic air-gun arrays using numerical modelling

被引：5

作者：

Khodabandeloo, Babak ^{[1
]}

Landro, Martin ^{[1
]}

机构：

[1] Norwegian Univ Sci & Technol NTNU, Dept Geosci & Petr, NO-7491 Trondheim, Norway

来源：

EUROPEAN GEOSCIENCES UNION GENERAL ASSEMBLY 2017, EGU DIVISION ENERGY, RESOURCES & ENVIRONMENT (ERE) | 2017年 / 125卷

关键词：

air-gun array; high frequency generation; ghost cavitation; numerical simulation; SIGNALS; NOISE;

D O I：

10.1016/j.egypro.2017.08.158

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Ghost cavitation is probably the mechanism behind the majority of high frequencies (above 5 kHz) generated by seismic air-gun arrays. Such high frequencies are less important in seismic reflection imaging. High frequency sound might impact marine fauna and particularly marine mammals In this paper the array signatures and high frequency ghost cavitation signals for two different arrays are simulated using numerical modelling. It is observed that one array has slightly more (20%) energy within the seismic frequency band (1-100 Hz) but emits significantly more energy (150%) for frequencies above 5 kHz. (C) 2017 The Authors. Published by Elsevier Ltd.

引用

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页码：153 / 160

页数：8

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