No numerical model has thus far addressed seismites, even though seismites are frequently used for the reconstruction of seismic events in the geological past. This is the more remarkable since the boundary conditions which have to be fulfilled for the development of seismites have also been estimated only empirically. The present contribution is a first attempt to model numerically the soft-sediment deformation structures caused by the passage of S-waves through near-surface sedimentary layers. The simulations are based on the so-called pressure tube model and the iSALE2D program. We modelled a seismic S-wave with six different vertical velocities, ranging from 1.6 to 2.6 m · s^-1, passing through sediments with different densities and porosities in a sedimentary succession from the surface down to a depth of 10 m. The modelled soft-sediment deformation structures (load casts, flame structures, injection structures and sedimentary volcanoes) show similar geometries and sizes as those known from laboratory experiments and field studies. The geometry, size and type of these structures depend on the sediment properties and on the initial pressure used as a trigger mechanism, rather than on S-wave velocity. In contrast, the depth of the seismites appears to depend strongly on the S-wave velocity.

迄今为止，还没有数值模型涉及地震岩，尽管地震岩经常用于重建地质过去的地震事件。这是更显着的，因为地震岩发育必须满足的边界条件也只是根据经验估计的。目前的贡献是第一次尝试对由 S 波通过近地表沉积层引起的软沉积物变形结构进行数值模拟。模拟基于所谓的压力管模型和 iSALE2D 程序。我们模拟了具有六种不同垂直速度的地震 S 波，范围从 1.6 到 2.6 m·s ^-1，从地表向下至 10 m 深度以沉积序列的方式穿过不同密度和孔隙度的沉积物。模拟的软沉积物变形结构（载荷铸造、火焰结构、注入结构和沉积火山）显示出与实验室实验和实地研究中已知的相似的几何形状和尺寸。这些结构的几何形状、大小和类型取决于沉积物特性和用作触发机制的初始压力，而不是 S 波速度。相反，地震岩的深度似乎在很大程度上取决于 S 波速度。