A New Instrument for Compliance Measurements

这项海洋科学技术开发项目将开发和建造三种新的宽带自主地震仪器，用于1)海底顺应性测量，2)开发和测试用于宽带地震学和其他地球物理应用的新传感器，以及3)研究海底地震噪声的变化，为安装永久性海底地震观测站做准备。这些仪器将以STS-2三分量地震仪为基础。所需的主要工作包括在传感器上安装夹紧/解夹系统后，将传感器安装到玻璃压力外壳内的电机驱动万向节中。像STS-2这样的宽带地震仪非常脆弱，不在海底时必须夹紧。顺应性技术可以绘制海洋地壳内部的熔融区域，因此是了解海洋地壳形成的一种有价值的科学工具。需要更好的仪器来继续发展这项技术，并将这项技术的应用扩大到新的地球物理特征，如水合物和热液区。一旦开发和建造完成，这些仪器将被放置在一个可供整个研究界共享使用的设备池中。

This ocean sciences technology development project will develop and construct three new broadband autonomous seismic instruments to be used for 1) compliance measurements on the seafloor, 2) the development and testing of new sensors for broadband seismology and other geophysical applications and 3) studies of the variations in ocean floor seismic noise in preparation for the installation of permanent seafloor seismic observatories. The instruments will be based on STS-2 three component seismometers. The primary work required involves fitting the sensors into motor driven gimbals within the glass pressure housings after installing a clamp/unclamp system onto the sensors. Broadband seismometers such as the STS-2 are very fragile and must be clamped when not on the seafloor. The compliance technique can map regions of melt within the oceanic crust and is therefore a valuable scientific tool for understanding the formation of the oceanic crust. Better instruments are required to continue the development of this technique and to extend the use of this technique to new geophysical features such as hydrates and hydrothermal areas. Once developed and constructed, the instruments will be placed is a pool of shared-use equipment accessible by the whole research community.