He added that the energy that travels within the core shadow of Mars has never been seismologically studied before.

他补充说，火星核心阴影内传播的能量从未被地震学研究过。

Both large marsquakes happened in an area known as the " core shadow zone, " said a statement by the Seismological Society of America.

美国地震学会的一份声明称，这两个大型地震都发生在一个被称为“核心阴影区”的区域。