Evaluating Seismic Ambient Noise Techniques for Imaging Lava Tubes on the Moon - Synthetic Data
Abstract
This repository contains all the synthetic data used for the research paper "Evaluating Seismic Ambient Noise Techniques for Imaging Lava Tubes on the Moon". The synthetic data were generated with the spectral element code SALVUS (Afanasiev et al., 2019) using a 2D digital twin model of the shallow subsurface structure of the Moon developed by Keil et al. (2024). Different simulation runs were performed with varying parameters of the cavity including the roof thickness, height, width and depth. The generated data are in the folder "Synthetic_data". The README.pdf file contains more information on the synthetic data.
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README Fig.1: Schematic set-up of the simulation runs with sources and receivers on the surface and a cavity implemented in the subsurface. Important Information: • Simulation Setup: The simulations are conducted in 2D with receivers placed on the surface at 5 m spacing. • Data Format: The synthetic data are stored in MSEED format. Receiver Layout • Parameter Study Folder: Each data stream in the “Parameter_study” folder contains 81 receivers, positioned from X = 400 m to X = 800 m. o Receivers are named sequentially from “00000” to “00080”, where: ▪ “00000” corresponds to X = 400 m ▪ “00080” corresponds to X = 800 m • Complex Structure Folder: Three different scenarios were simulated: MH1: only skylight MH2: skylight and lava tube MH3: lava tube cross section o The MH1 and MH2 data streams contain 68 receivers, positioned from X = 400 m to X = 565 m and from X = 635 m to X = 800 m, as no receiver is positioned within the skylight. o The MH3 data stream contains 81 receivers, positioned from X = 400 m to X = 800 m.
Seismogram Components Each dataset contains four different seismogram components: • X: Horizontal velocity component • Y: Vertical velocity component • RotX: Horizontal rotational component • StrX: Horizontal strain component Naming Convention for Streams The stream filenames encode the parameters of the implemented ice-bearing rock: • RT = Roof thickness [m] • SC = Scattering of the surrounding medium [%] • D = Depth [m] • W = Width [m] • H = Height [m] Name Height [m] Roof thickness [m] Depth [m] Width [m] Scattering [%] NOCAV 0 0 0 0 0 RT3H42 42 3 45 60 0 RT5H40 40 5 45 60 0 RT10H35 35 10 45 60 0 RT15H30 30 15 45 60 0 RT20H25 25 20 45 60 0 RT25H20 20 25 45 60 0 H10D20 10 10 20 60 0 H20D30 20 10 30 60 0 H50D60 50 10 60 60 0 H70D80 70 10 80 60 0 D50RT10 40 10 50 60 0 D60RT20 40 20 60 60 0 D80RT40 40 40 80 60 0 D100RT60 40 60 100 60 0 D140RT100 40 100 140 60 0 SC10 40 5 45 60 10 SC30 40 5 45 60 30 SC50 40 5 45 60 50 SC70 40 5 45 60 70 W5 40 10 50 5 0 W30 40 10 50 30 0 W100 40 10 50 100 0 W150 40 10 50 150 0
Table 1: Specification of Stream namings and corresponding parameters of implemented cavity.