Acquisition of a New Linux-Based Computer System for Geophysical Research

[0842295]该奖项是根据2009年美国复苏和再投资法案（公法111-5）资助的。本提案寻求约7.5万美元的资金，用于购买用于地球物理研究的群体计算资源。需要两台戴尔工作组服务器，三个现代工作站，两个14tb快速RAID磁盘阵列和相关配件。这些仪器将成为部门努力在一个通用分布式系统上实现硬件和软件标准化的一部分。华盛顿大学将以IT技术人员支持的形式提供100%的成本匹配。该系统将用于使用建模和地震学方法研究类地行星的内部结构和动力学。pi将对宽带地震仪收集的数据应用数值模拟方法来阐明岛弧和弧后扩散中心的结构。通过这样做，他们打算阐明俯冲系统中的温度异常、熔体、水和地幔流动。宽带地震数据也将被处理，以了解南极地幔结构限制冰后反弹和冰质量损失估计。地幔中的“热线”将通过分析地震数据并将其与热点和小尺度对流模式联系起来来评估。EarthScope USArray数据将用于更好地了解地幔的地震衰减结构。此外，将利用精确的相对定位方法和其他震源参数来研究深层地震的机理。对北美构造史的不同模型将进行计算研究。我们将分析地核绕射波，以了解地核-地幔边界，从而阐明最下层地幔的垂直结构和热通量。新的计算资源也将允许精确的数值行星表面和地球动力学模型。计算机系统将支持众多研究人员——pi、4名研究科学家和8名研究生。系统也支持本科生毕业论文。大的存储空间将用于组织IRIS/PASSCAL数据集，以交付给DMC -从而为社区提供开放的数据访问

0842295WiensThis award is funded under the American Recovery and Reinvestment Act of 2009 (Public Law 111-5). This proposal seeks funding of ~$75K to purchase group computing resources for geophysical research. Requested are two Dell workgroup servers, three modern workstations, two fourteen Tb fast RAID disk arrays, and associated accessories. These instruments will be part of a departmental effort to standardize hardware and software on a common distributed system. Washington University will provide a 100% cost match in the form of IT technician support. The system will be put to use in studying the interior structure and dynamics of terrestrial planets using modeling and seismological approaches. The PIs will apply numerical modeling approaches to data collected from broadband seismometers to elucidate the structure of island arcs and backarc spreading centers. In so doing they intend to elucidate temperature anomalies, melt, water, and mantle flow in subduction systems. Broadband seismic data will also be processed to understand Antarctic mantle structure constraining post-glacial rebound and ice mass loss estimates. "Hot lines" in the mantle will be assessed by analyzing and relating seismic data to hotspots and small-scale convection patterns. EarthScope USArray data will be used to better understand seismic attenuation structure in the mantle. Additionally, deep earthquake mechanistics will be investigated using precise relative location methods and other source parameters. Different models for North American tectonic history will be interrogated computationally. Core-diffracted waves will be analyzed to understand the core-mantle boundary - thus elucidating the vertical structure of the lowermost mantle and heat flux. The new computational resources will also allow for refined numerical planetary resurfacing and geodynamical models. The computer system(s) will support numerous researchers - the PIs, 4 research scientists, and 8 graduate students. The system(s) will also support undergraduate senior theses. The large storage space will be used to organize IRIS/PASSCAL datasets for delivery to the DMC - thus providing open access to data for the community.***