Scholte waves at the seafloor interface are generally identified by their velocity features and seismic fields,which are measured using ocean bottom seismometers and geophones.These methods are effective in cases wher...Scholte waves at the seafloor interface are generally identified by their velocity features and seismic fields,which are measured using ocean bottom seismometers and geophones.These methods are effective in cases where there is a considerable difference between the velocities of Scholte and acoustic waves in water.However,they are ineffective when the velocities of these two types of waves are close to each other.Thus,in this paper,a method based on acoustic pressure field measurement for identifying Scholte waves is proposed according to their excitation and propagation characteristics.The proposed method can overcome the limitations on the velocities of two types of waves.A tank experiment is designed and conducted according to the proposed method,and an ocean environment is scaled down to the laboratory size.Acoustic measurements are obtained along virtual arrays in the water column using a robotic apparatus.Experiments show that changes in Scholte wave amplitudes,depending on different source depths and propagation distances,are consistent with the theoretical results.This means that Scholte waves generated at the seafloor interface are successfully measured and identified in the acoustic pressure field.展开更多
Vib Pro HD电控箱体2017年开始引进并在国内使用,现在已经替代Vib Pro成为国内的主流电控箱体,并先后在科威特、沙特项目大规模应用,Vib Pro HD电控箱体相对于Vib Pro在启动精度、多样性的数据传输、输出力的高低频控制和畸变控制等多...Vib Pro HD电控箱体2017年开始引进并在国内使用,现在已经替代Vib Pro成为国内的主流电控箱体,并先后在科威特、沙特项目大规模应用,Vib Pro HD电控箱体相对于Vib Pro在启动精度、多样性的数据传输、输出力的高低频控制和畸变控制等多方面都有了提升,但Vib Pro HD电控箱体的控制方式(相位控制和振幅控制)以及大部分控制参数都没有变化,本文结合笔者的使用经验,主要就两种控制方式对应的一些控制参数以及其它的一些控制参数进行了对比性测试和分析,希望能对使用者提供一些参考。展开更多
基金the National Natural Science Foundation of China(No.11474258)the State Key Laboratory of Acoustics(No.SKLA202206)。
文摘Scholte waves at the seafloor interface are generally identified by their velocity features and seismic fields,which are measured using ocean bottom seismometers and geophones.These methods are effective in cases where there is a considerable difference between the velocities of Scholte and acoustic waves in water.However,they are ineffective when the velocities of these two types of waves are close to each other.Thus,in this paper,a method based on acoustic pressure field measurement for identifying Scholte waves is proposed according to their excitation and propagation characteristics.The proposed method can overcome the limitations on the velocities of two types of waves.A tank experiment is designed and conducted according to the proposed method,and an ocean environment is scaled down to the laboratory size.Acoustic measurements are obtained along virtual arrays in the water column using a robotic apparatus.Experiments show that changes in Scholte wave amplitudes,depending on different source depths and propagation distances,are consistent with the theoretical results.This means that Scholte waves generated at the seafloor interface are successfully measured and identified in the acoustic pressure field.
文摘Vib Pro HD电控箱体2017年开始引进并在国内使用,现在已经替代Vib Pro成为国内的主流电控箱体,并先后在科威特、沙特项目大规模应用,Vib Pro HD电控箱体相对于Vib Pro在启动精度、多样性的数据传输、输出力的高低频控制和畸变控制等多方面都有了提升,但Vib Pro HD电控箱体的控制方式(相位控制和振幅控制)以及大部分控制参数都没有变化,本文结合笔者的使用经验,主要就两种控制方式对应的一些控制参数以及其它的一些控制参数进行了对比性测试和分析,希望能对使用者提供一些参考。
