Acquisition of 10 Broadband Seismographs for Enhancement of TERRAscope

小行星9512201 该补助金为加州南部最先进的数字地震台的购置和安装成本提供部分支持（48%）。 每个台站包括一个宽带Streickeisen（STS-2）地震仪，一个力平衡加速度计，和一个6通道24位Quanterra公司。 数据记录器 计划新建5个车站。 该仪器能准确、完整地测量大小地震、小震和区域地震的地震波。 新提议的仪器补充了称为TERRAscope的现有宽带地震台站网络。 目前，TERRAscope由17个台站组成。 新的仪器将大大提高TERRAscope的空间分辨率，将网络中心部分目前150公里的台站间距减少数十公里。 目前，南加州的大多数现有地震数据的动态范围有限，或者在非常窄的频带上测量，因此它们对一般研究的有用性有限。 此外，TERRAscope之前的仪器没有经过足够精确的校准，无法提供定量振幅数据。 这些仪器位于加州南部，提供了额外的好处，能够记录大规模的加州地震，并以前所未有的细节研究其源物理。 将进行的研究和研究培训类型将是地球结构和地震物理学的基础地震学研究，以及博士生的培训。观测和理论地震学的候选人和博士后研究员。 将利用新数据进行的项目的例子有：1）确定核幔边界的结构; 2）加州南部太平洋-北美板块边界的成像;（3）世界地震和美国西部区域地震的震源物理研究;（4）发展新的地震资料建模的理论和计算方法。 该项目将受益于加州理工学院现有的和其他拟议的与地震监测工作有关的项目。太平洋贝尔基金会（CalREN）免费提供数字数据传输。 其他项目正在提供软件支助和数据处理设施。位于加州理工学院的南加州地震中心的数据中心和IRIS DMS将通过INTERNET向地震研究界分发数据。 ***

9512201 Kanamori This grant provides partial support (48%) for the costs of acquisition and installation of state-of-the-art digital seismographic stations in southern California. Each station consists of a broadband Streickeisen (STS-2) seismometer, a force balanced accelerometer, and a 6 channel 24 bit Quanterra Inc. data logger. Five new stations are planned. This instrumentation can measure seismic waves from small and large earthquakes as well as from teleseisms and regional earthquakes accurately and completely. The new proposed instrumentation complements the existing network of broadband seismographic stations, called TERRAscope. Currently, TERRAscope consists of 17 stations. The new instrumentation will significantly increase the spatial resolution of TERRAscope by reducing current station spacing of 150 km by tens of kilometers within the central part of the network. Currently, most existing earthquake data for Southern California are of limited dynamic range or are measured over very narrow frequency bands and thus their usefulness for general research is limited. Furthermore, pre-TERRAscope instrumentation was not calibrated with sufficient accuracy to provide quantitative amplitude data. The location of these instruments in southern California provides the additional benefit of being able to record large California earthquakes on scale and study their source physics in unprecedented detail. The type of research and research training to be conducted will be fundamental seismological studies of earth structure and earthquake physics, as well as training of Ph.D. candidates and postdoctoral fellows in observational and theoretical seismology. Examples of the projects that will be carried out using the new data are: 1) determination of the structure of the core mantle boundary; 2) imaging of the Pacific-North America plate boundary in southern California; 3) studies of earthquake source physics of both teleseisms around the world and regional earthquakes in the Western US, 4) new theoretical and computational methods for modeling the seismic data will be developed. This project will benefit from existing and other proposed projects at Caltech related to the earthquake monitoring effort. The Pacific Bell foundation (CalREN) is providing digital data transmission at no cost. Other projects are providing software support and data processing facilities. The Data Center of the Southern California Earthquake Center located at Caltech and the IRIS DMS will distribute the data to the seismological research community via INTERNET. ***