Low-Frequency Attenuation in Microstructurally Equilibrated Silicate Partial Melts

小行星9220603库珀 弯曲蠕变和衰减实验玻璃陶瓷和合成（钴镁）橄榄石玄武岩部分熔融骨料表明三到四个不同的滞弹性损失（衰减）机制。 这些损耗相互作用，在空间中产生衰减“带”。 这些损失的性质，如果理解， 形成用于识别与部分熔融唯一相关的衰减效应的明确基础。 因此，拟平衡部分熔融对多晶硅酸盐衰减行为的影响将进行实验研究。 将在剪切（往复扭转）和杨氏模量（往复弯曲）格式中进行地震-亚地震频率实验，以隔离稳态熔体形态对S波和P波衰减的影响。 实验将应用于橄榄石、橄榄石加（橄榄石饱和）拉斑玄武岩和铝硅酸盐玻璃陶瓷的合成集合体。 ***

9220603 Cooper Flexural creep and attenuation experiments on glass-ceramics and synthetic (Co-Mg) olivine-basalt partial-melt aggregates indicate three-to-four distinct anelastic loss (attenuation) mechanisms. These losses interact to produce an attenuation "band" in space. The nature of these losses, if understood, could form an unequivocal foundation for recognizing the attenuation effects(s) uniquely associated with partial melting. Therefore, an experimental investigation of the effects of quasiequilibrated partial melting on the attenuation behavior of polycrystalline silicates will be done. Seismic-to-subseismic frequency experiments will be performed in both shear (reciprocating torsion) and Young's modulus (reciprocating flexure) formats in order to isolate the effects of a steady-state melt morphology on S- and P- wave attenuation. The experiments will be applied to synthetic aggregates of olivine, olivine-plus-(olivine-saturated) tholeiite basalt and aluminosilicate glass-ceramics. ***