Upgrade of UCLA Computing Facilities for Research in Seismology

这笔拨款为加州大学洛杉矶分校地球与空间科学系购置用于地震学和大地测量学研究的计算机设备提供了47,000美元的一半费用。购买的设备将包括多个SUN工作站、一个高端SUN工作站双处理器、扩展内存和磁盘存储以及额外的外设。该设备将大大提高加州大学洛杉矶分校一个大型研究小组的研究能力，该小组进行了广泛的计算密集型地球物理研究。利用新的计算机网络进行的研究将包括：根据地震数据和由GPS测量确定的位移数据建立地震聚类模型，以提供地震预报；基于断层几何形状和岩石类型分析的地震活动性质；对震前、同震和震后数据进行统计分析，以帮助理解地震风险的时空性质；通过宽带数字地震图分析确定地震能量，以帮助理解俯冲带内的深震源地震物理；通过pascal数据分析地震层析成像，以检查活动裂谷（即东非裂谷，贝加尔湖裂谷）地区的地幔动力学；研究南加州兰德斯地震近地表地震速度的横向非均质性。＊＊＊

9615357 Vidale This grant provides $47,000 as one-half of the costs of acquiring computer equipment for the UCLA Department of Earth & Space Sciences for use in seismological and geodetic research. Equipment to be purchased will include, multiple SUN workstations, one high end SUN workstation dual processors and expanded memory and disk storage and additional peripherals. This equipment will greatly enhance the research capabilities of a large group at UCLA which conducts a broad range of geophysical research that is computationally intensive. Studies that will utilize the new computer network will include, modeling of earthquake clustering determined from seismic data and displacement data determined from GPS measurements in an attempt to provide earthquake forecasts, the nature of seismicity based on analysis of fault geometry and rock types, statistical analysis of pre-seismic, co-seismic and post-seismic data to aid in understanding the spatial and temporal nature of seismic risks, determination of seismic energy from analyses of broadband digital seismograms to aid in the understanding of deep focus earthquake physics within subduction zones, seismic tomography via analysis of PASSCAL data to examine mantle dynamics beneath areas of active rifting (i.e. East African Rift, Baikal Rift) and studies of the lateral heterogeneity of near-surface seismic velocities from the Landers earthquake in southern California. ***