Upgrade of Computer Equipment for Seismology and Geophysics at U.C. Berkeley

这笔拨款为加州大学伯克利分校地球物理计算机实验室购买新的和升级的计算机设备提供了65,000美元的一半费用支持，该设备由伯克利地震台站（BSS）共享。具体来说，设备和升级将包括一个双CPU SUN Enterprise 3000服务器，8个SUN Ultra 1140升级到8个现有的SUN SLC，一个新的SUN Ultra 1140工作站和一个SUN Ultra 1200e工作站。新教员Doug Drever博士的加入，以及伯克利其他地震学家和地球物理学家的计算密集型需求将受益于该设备提供的新功能，包括使用软件从多个升级的工作站创建并行虚拟机（PVM）。将利用该设备的具体项目包括：通过对多个数字地震台网（包括永久BSS和IRIS GSN站）收集的宽带波形数据以及便携式IRIS- passcal仪器收集的数据进行反演，对美国西部地区地壳和上地幔结构进行建模。地震破裂的成核和生长研究、大余震与主震断层滑动关系的统计分析、基于地震波非弹性衰减模型的全球地幔层析成像、地球动力学过程的数值模拟和地幔矿物性质的初始计算。＊＊＊

9615751 Romanowicz This grant provides $65,000 as one-half support of the costs of acquiring new and upgraded computer equipment for the Geophysics computer laboratory at UC Berkeley, a facility shared by the Berkeley Seismographic Station (BSS). Specifically, the equipment and upgrades will include a dual CPU SUN Enterprise 3000 server, eight Sun Ultra 1 140 upgrades to eight existing SUN SLC's, one new SUN Ultra 1 140 workstation and one SUN Ultra 1 200E workstation. The addition of a new faculty member, Dr. Doug Drever, and the computationally intensive needs of other seismologists and geophysicists at Berkeley will benefit from the new capabilities afforded by this equipment which will include using software to create a parallel virtual machine (PVM) from multiple upgraded workstations. Specific projects that will utilize this equipment include modeling of regional crustal and upper mantle structure in the western U. S. through inversion of broadband waveform data collected from multiple digital seismographic networks including both permanent BSS and IRIS GSN stations and data from portable IRIS-PASSCAL instruments, studies of the nucleation and growth of earthquake ruptures and statistical analyses of the relationships between large aftershocks and mainshock fault slip, global mantle tomography based on models of the anelastic attenuation of seismic waves, numerical modeling of geodynamic processes and ab intio calculations of the properties of mantle minerals. ***