Refine
Year of publication
Document Type
- Article (77)
- Monograph/Edited Volume (3)
- Other (3)
- Conference Proceeding (1)
- Postprint (1)
Keywords
- Arrayseismologie (3)
- Ground-motion prediction equation (3)
- array seismology (3)
- Erdbebenkatalog (2)
- Erdbebenschwarm 2008/09 (2)
- Ground-motion prediction equations (2)
- Vogtland/West Bohemia (2)
- Vogtland/Westböhmen (2)
- West Bohemia (2)
- computational ethnomusicology (2)
- earthquake catalog (2)
- earthquake swarm 2008/09 (2)
- traditional Georgian music (2)
- Aleatory variability (1)
- Array seismology (1)
- Artem Erkomaishvili (1)
- Attenuation (1)
- Backbone model (1)
- Bagging (1)
- Bayesian networks (1)
- Chile subduction zone (1)
- Correlation (1)
- Crustal earthquakes (1)
- Data processing (1)
- Deconvolution (1)
- Early warning (1)
- Ensembles (1)
- Epistemic uncertainty (1)
- Erdbebenschwarm 2008 (1)
- Europe (1)
- Expert judgment (1)
- Frequency-magnitude distribution (1)
- GPR (1)
- Georgian chant (1)
- Georgische liturgische Gesänge (1)
- Ground penetrating radar (1)
- Ground-motion models (1)
- Ground-motion-model (1)
- Hierarchical model (1)
- Indian Ocean (1)
- Inverse filtering (1)
- Kappa (1)
- Logic tree (1)
- Logic trees (1)
- Manifold (1)
- Middle East (1)
- Mixture model (1)
- Model selection (1)
- Multilevel model (1)
- Non-ergodic PSHA (1)
- P-waves (1)
- Probabilistic forecasting (1)
- Probabilistic seismic hazard analysis and Bayesian inference (1)
- Regional-dependence (1)
- S-waves (1)
- Seismic hazard assessment (1)
- Single-station sigma (1)
- Site amplification (1)
- Site effects (1)
- Stochastic model (1)
- Stress parameter (1)
- Strong-motion data (1)
- Style of faulting (1)
- Swarm earthquakes (1)
- Theoretical seismology (1)
- Tsunamis (1)
- Vertical resolution (1)
- Vogtland (1)
- Wave propagation (1)
- algorithms (1)
- body waves (1)
- computergestützte Musikethnologie (1)
- damage (1)
- earthquake swarm (1)
- earthquakes (1)
- elastic waves (1)
- eruptions (1)
- floods (1)
- geologic hazards (1)
- model validation (1)
- musical scales (1)
- musikalische Tonleitern (1)
- natural hazards (1)
- regression tree (1)
- seismic waves (1)
- signal-to-noise ratio (1)
- swarms (1)
- traditionelle Georgische Musik (1)
- tuning (1)
- volcanic earthquakes (1)
Institute
- Institut für Geowissenschaften (85) (remove)
Records from ocean bottom seismometers (OBSs) are highly contaminated by noise, which is much stronger
compared to data from most land stations, especially on the horizontal components. As a consequence, the high energy of the oceanic noise at frequencies below 1 Hz considerably complicates the analysis of the teleseismic earthquake signals recorded by OBSs.
Previous studies suggested different approaches to remove low-frequency noises from OBS recordings but mainly focused on the vertical component. The records of horizontal components, which are crucial for the application of many methods in passive seismological analysis of body and surface waves, could not be much improved in the teleseismic frequency band. Here we introduce a noise reduction method, which is derived from the harmonic–percussive separation algorithms used in Zali et al. (2021), in order to separate long-lasting narrowband signals from broadband transients in the OBS signal. This leads to significant noise reduction of OBS records on both the vertical and horizontal components and increases the earthquake signal-to-noise ratio (SNR) without distortion of the broadband earthquake waveforms. This is demonstrated through tests with synthetic data. Both SNR and cross-correlation coefficients showed significant improvements for different realistic noise realizations. The application of denoised signals in surface wave analysis and receiver functions is discussed through tests with synthetic and real data.