Global Mantle Structure from Long-Period Body Waves

小行星9405948 本研究将继续研究长周期体波资料，以解决地幔非球面弹性和滞弹性结构。 主要关注的领域将是1）体波衰减的全球数据集的测量和解释-特别强调将限制Q结构的横向变化，这将补充使用表面波的其他研究。 还将尝试限制地球中吸收带的形式; 2）使用体波形建模来处理地震图的三倍区域-该方法采用3D射线示踪剂，其也可用于观察走时扰动的非线性行为;以及3）包括各种地球动力学偏见的整个全球数据集的建模。 ***

9405948 Masters This research is to continue an investigation of long-period body wave data in order to resolve aspherical elastic and anelastic structure in the mantle. The main areas of focus will be 1) the measurement and interpretation of global datasets of body-wave attenuation - special emphasis will be on constraint of lateral variations in Q structure which will complement other studies that use surface waves. An attempt will also be made to constrain the form of the absorption band in the earth; 2) the use of body-waveform modeling to handle triplication regions of the seismograms - the method employs a 3-D ray tracer which is also useful for looking at non- linear behavior of travel-time perturbations and 3) modelling of entire global datasets including various geodynamical prejudices. ***