The NEPOS Project: Near-Surface Seismic Exploration of Planetary Bodies with Adaptive Networks

• DOI: 10.5194/egusphere-egu24-9849
• Publication Date: 2024-03-08T19:51:51Z
• Authors: Sabrina Keil; Heiner Igel; Felix Bernauer; Dmitriy Shutin; Ban-Sok Shin; Kai Nierula; Philipp Reiss; Rok Sesko; Fabian Lindner
• Keywords: NEPOS; Seismology; Surface Seismic

Ground motion observations on planetary objects are a prerequisite for detailed understanding of their interior structure and evolution. The imaging the near surface - in particular Moon has strong practical implications. First, race is to detect ice-bearing rocks from which water could be extracted used as resource crewed missions. Second, due substantial bombardment lunar with meteorites lack an atmosphere, observatories or habitats may have built underground. It been proposed that cavities ancient lava flows below place infrastructure. Current mission plans geophysical exploration focus static seismic sensors/arrays would restricted area they can explore.       With NEPOS project we want go beyond these restrictions develop concepts mobile arrays work autonomous way using robotic technology. scientific challenges include wavefield effects icy caves strongly scattering environment, provision optimal source-receiver configurations them, well integrated data-processing workflow observation subsurface image including quantification uncertainties.    In order solve challenges, first developed Digital Twin wave propagation heterogeneous crust generate synthetic data spectral element code SALVUS. We compared seismograms Apollo 17 Lunar Seismic Profiling Experiment (LPSE) find main characteristics coincide. further generated variety network heterogeneities, will test appropriate methods structure. Due presence media ambient noise tomography seems promising method, was already shown previous studies. apply interferometry LPSE data, our seismograms, reconstruct Green’s functions, give us information properties.