Early Career: Acquisition of a Computer Cluster

这个奖项为一个新的Linux计算机集群提供资金，用于加州大学洛杉矶分校的地震学研究，用于早期职业PI。该集群将被纳入校园范围内的集群，以便未使用的自行车可以共享。研究将包括正演和逆演模型。正演模拟将侧重于地震速度和各向异性，以及定量模型的不确定性。求解非线性逆问题会对现有的计算资源造成过度的挑战。Earthscope USArray可传输阵列数据将使用新的集群进行处理。未来约束地幔和地核地震各向异性的工作将涉及全谱耦合，这在计算上要求很高。波浪传播代码也将用于测试模型。三维地核结构模型将有助于确定地核内部、地核内部的相和/或成分变化，以及地核边界的密度变化，最终进一步加深我们对地热的认识。其他研究领域包括地幔变形几何、板块运动-岩石圈次变形耦合、软流圈变形与化石岩石圈变形、洋中脊扩张、上地幔过程的表面构造特征、地壳、上地幔岩石圈与软流圈的相互作用，以及不同深度地幔的热与成分性质。新的集群将使来自地球科学、天体物理学、物理学、生物学和计算机科学等许多不同领域的研究人员受益，因为它将被纳入现有的校园集群。该星群将提供基本地球系统功能的数据。新的建模技术和科学成果将被发表，模型将在互联网上自由传播。该集群将用于地球科学和其他学科的学生培训——培养具有理解正演建模和并行计算机编程能力的新一代科学家。该集群将被纳入校园范围内的共享集群。然后，加州大学洛杉矶分校学术技术服务（ATS）免费提供维护和安装。ATS还提供系统管理，包括操作系统维护和升级、硬件解析和调度。ATS还提供培训。* * *

Beghein0949255This award provides funding for a new Linux computer cluster for seismological research at UCLA for an early career PI. The cluster will be incorporated into the campus-wide cluster so that unused cycles can be shared. Research will involve both forward and inverse modeling. Forward modeling will focus on seismic velocity and anisotropy, and quantitative model uncertainties. Solving the non-linear inverse problems will over-challenge current computing resources. Earthscope USArray Transportable Array data will be processed using the new cluster. Future work constraining seismic anisotropy in the mantle and core will involve full spectral coupling, which is computationally demanding. Wave propagation code will also be used to test models. Three-dimensional core structure models will assist in defining an inner inner core, phase and/or compositional changes within the inner core, and defining density changes at the core boundary, ultimately furthering our understanding of the geotherm. Other study areas for the new cluster include mantle deformation geometry, plate motion-sub-lithospheric deformation coupling, asthenospheric deformation versus fossil lithospheric deformation, mid-ocean ridge spreading, surface tectonic signatures of upper mantle processes, crust, upper mantle lithosphere and the asthenosphere interactions, and thermal versus compositional nature of the mantle at various depths. The new cluster will benefit researchers from many different fields, in Earth Sciences, Astrophysics, Physics,Biology, and Computer Sciences as it will be incorporated into the existing campus-wide cluster. The cluster will provide data on basic Earth system functioning. New modeling techniques and scientific results will be published, and models will be freely disseminated over the internet. The cluster will be used for student training both in Geosciences and within other disciplines - producing a new generation of scientists with the ability to understand forward modeling and parallel computer programming. The cluster will be incorporated into the campus-wide shared cluster. UCLA Academic Technology Services (ATS) then provides maintenance and installation at no cost. ATS also provides system administration including OS maintenance and upgrade, hardware resolution and scheduling. ATS also provides training. ***