Study for mobile ocean bottom broadband seismic observation of the next generation

我们已经研制了移动的宽带海底地震仪（BBOBS），并取得了许多实际观测和成果。但是，对资料的评价表明，在资料分析中起重要作用的水平分量的噪声水平相当高。为了解决这个问题，一个没有底流影响的观测方法是使用小型低剖面宽带传感器，使其能够侵入沉积物。我们已经开发了新的传感器，并进行了几次测试观察。结果表明，这种传感器单元的部署方式可以获得类似陆地观测站的地震数据。

We have already developed the mobile broadband ocean bottom seismometer (BBOBS), and many practical observations and the results have been achieved. But, the evaluation of the data shows that the noise level of horizontal components those are important in data analyses is rather high. To clear this problem, one idea of observation without effects of the bottom current is the use of small and low profile broadband sensor that enables to intrude into the sediment. We have developed the new sensor and performed several test observations. The results prove that this way of deploying the sensor unit can obtain seismic data like as land observatories.