论文标题
高频排放和日光的深层地震来源的分析和建模
Analysis and Modeling of High-Frequency Emission and Deep Seismic Sources of Sunquakes
论文作者
论文摘要
Lindsey等人发表的最新工作找到了与2011年7月30日M9.3耀斑相关的日夸克的深层地震来源的证据，以及延伸至10 MHz的地震发射。我们独立检查日夸克，并且在8 MHz频带中发现了可能的波前，尽管在10 MHz频段中没有易于辨别波前。此外，我们对以报道的参数进行建模的地震激发进行数值模拟，并检查了功率谱的变化，并检查了激发源深度的增加。发现峰值频率降低了深度的增加，但在z = 0和z = -840 km之间表示浅最小值。对M9.3日光的可疑波前的分析发现，所报道的地震发射的功率谱接近背景振荡，尽管峰值频率明显低于背景峰。此外，发现Lindsey等人估计的来源的幅度太低而无法产生观察到的波前。
Recent work published by Lindsey et al find evidence for a deep and compact seismic source for the sunquake associated with the 2011 July 30 M9.3 flare, as well as seismic emission extending up to 10 mHz. We examine the sunquake independently, and a possible wavefront is found in the 8 mHz band, though no wavefront is easily discernible in the 10 mHz band. Additionally, we perform numerical simulations of seismic excitation modeled with the reported parameters and changes in the power spectra with increasing depth of the excitation source are examined. It is found that the peak frequency decreases for increasing depths, but a shallow minimum is indicated between z=0 and z=-840 km. Analysis of the suspected wavefront of the M9.3 sunquake finds that the power spectrum of the reported seismic emission is close to that of background oscillations, though with a peak frequency noticeably lower than the background peak. Additionally, it is found that the amplitude of the source estimated by Lindsey et al is too low to produce the observed wavefront.
