We applied state-of-the-art seismic processing and imaging techniques to crustal-scale seismic reflection data from the BELCORP/DEKORP87 lines 1A and 1B. The aim of the presented work was to identify structural evidence in the Earth's crust and upper mantle related to the ongoing magmatic activity in the Quaternary West Eifel Volcanic Field (WEVF) in Central Europe where ca. 70 eruptions happened since 65 ka. Following careful signal-processing, Fresnel volume migration was applied and yielded images with exceptionally strong lithospheric reflectors in the SE of the WEVF. Sparse signal representation revealed numerous reversed polarities. Using petrophysical relations, the corresponding reflections can be interpreted as reflections from melt and/or volatile-bearing (supercritical CO₂) zones which appear as horizontally elongated lens-shaped sills. Furthermore, we observed reflections with similarly inverted polarities from structural features located around the Moho at of 31 km depth, indicating fluids or melts from the uppermost mantle and supporting magmatic underplating models.

中文翻译：

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德国 West Eifel 火山场充满流体的基台地震反射成像


我们将最先进的地震处理和成像技术应用于来自 BELCORP/DEKORP87 1A 和 1B 线的地壳尺度地震反射数据。所介绍的工作的目的是确定地壳和上地幔的结构证据，这些证据与中欧第四纪西埃菲尔火山场 （WEVF） 正在进行的岩浆活动有关，自 65 ka 以来发生了大约 70 次喷发。在仔细的信号处理之后，应用菲涅耳体偏移，并在 WEVF 的 SE 中产生了具有异常强大的岩石圈反射体的图像。稀疏信号表示揭示了许多相反的极性。使用岩石物理关系，相应的反射可以解释为来自熔体和/或含挥发物（超临界 CO ₂ ）区的反射，这些反射表现为水平拉长的透镜状基台。此外，我们在 31 公里深处观察到位于 Moho 周围的结构特征具有类似反极性的反射，表明来自最上部地幔的流体或熔体并支持岩浆底板模型。