< p > Phys.org的2022年4月23日,< a href = " https://phys.org/news/2022-04-largest-marsquakes-date-planet-side.html " rel = " nofollow noreferrer " >两个最大的火星从星球的日期记录的远端链接< / > < a href = " https://pubs.geoscienceworld.org/ssa/tsr/article/2/2/88/613226/The-Far-Side-of-Mars-Two-Distant-Marsquakes " rel = " nofollow noreferrer " >火星的远端:两个遥远的火星探测到的洞察力< / >包含下面的图片。< / p > < p > < a href = " https://space.stackexchange.com/q/40505/12102 " >的答案marsquake中心点确定如何使用只有一个地震仪吗?< / >告诉我们,s和p波和他们的存在不同的传播速度有帮助。< / p > < p >但在这些宣传和研究事件的情况下我想问更具体地说:< / p > < p > <强>问题:< /强>他们能如何定位这些火星只使用一个单一的地震检波器的来源吗?呆在阴影区域的核心是帮助还是阻碍?< / p > <人力资源/ > < p > < a href = " https://i.stack.imgur.com/39dnB.png " rel = " nofollow noreferrer " > < img src = " https://i.stack.imgur.com/39dnB.png " alt = "在这里输入图像描述" / > < / > < / p > < blockquote > < p >图1。总结火星内部模型从斯塔尔et al .(2021)和地震射线路径阶段从本文中给出的事件。(一)旅游时间曲线计算使用TauP包(Crotwell et al ., 1999) 50公里的深度。阶段选择Marsquake服务(mq)确定这些事件与十字架表示,不同符号尺寸示意图反映了选择的不确定性。S1000a和S0976a遥远的事件。相比之下,也显示S0173a,事件在30°位于Cerberus窝。为所有三个事件,高烈度阶段移民被认定为直接P / S S0173a和单自由面反射PP / SS S1000a S0976a。 For S1000a, a weak Pdiff phase that is diffracted along the core–mantle boundary is also identified. The vertical dashed lines and gray shaded bars mark the event distances and uncertainties from Table S1, respectively. (b) The structural models are not constrained by observations for depths below ∼800 km for P waves (hatched region; Khan et al., 2021), hence the Pdiff travel times are purely from model predictions. (c) Illustrates the ray paths of the identified phases using a Mars model with a core radius of 1855 km.
Related and potentially helpful in Earth Science SE:
and in Space Exploration SE: