InhaltsangabeIntroduction.- A Multidisciplinary Study of the DPRK Nuclear Tests.- The IDC Seismic, Hydroacoustic and Infrasound Global Low and High Noise Models.- The Applicability of Incoherent Array Processing to IMS Seismic Arrays.- A Machine Learning Approach for Improving the Detection Capabilities at 3C Seismic Stations.- "Repeating Events" as Estimator of Location Precision: The China National Seismograph Network.- Cross-correlation Coefficients for the Study of Repeating Earthquakes: An Investigation of Two Empirical Assumption/Convention in Seismological Interpretation Practice.- Perspectives of Cross Correlation in Seismic Monitoring at the International Data Centre.- How to Invert Multi-Band, Regional Phase Amplitudes for 2-D Attenuation and Source Parameters: Tests Using the USArray.- Mantle Attenuation Estimated from Regional and Teleseismic P-waves of Deep Earthquakes and Surface Explosions.- Seismic Source Characteristics of Nuclear and Chemical Explosions in Granite from Hydrodynamic Simulations.- Testing Event Discrimination over Broad Regions using the Historical Borovoye Observatory Explosion Dataset.- Sources of Error and the Statistical Formulation of MS:mb Seismic Event Screening Analysis.- Visual Event Screening of Continuous Seismic Data by Supersonograms.- Suppression of Periodic Disturbances in Seismic Aftershock Recordings for Better Localisation of Underground Explosions.- The Influence of Spatial Filters on Infrasound Array Responses.- Sources of Error Model and Progress Metrics for Acoustic/Infrasonic Analysis: Location Estimation.- GT0 Explosion Sources for IMS Infrasound Calibration: Charge Design and Yield Estimation from Near-Source Observations.- Modelling of a Single-channel Beta-gamma Coincidence Phoswich Detector Using Geant4 for the Conversion Electron Energy Peak Resolution and Beta-gamma Coincidence Efficiency Improvement.- Analysis of Radionuclide Releases from the Fukushima Dai-ichi Nuclear Power Plant Accident. Part I.- Analysis of Radionuclide Releases from the Fukushima Dai-ichi Nuclear Power Plant Accident. Part II.- Discrimination of Nuclear Explosions against Civilian Sources Based on Atmospheric Radioiodine Isotopic Activity Ratios.- Isotopic Characterization of Radioiodine and Radioxenon in Releases from Underground Nuclear Explosions with Various Degrees of Fractionation.- Potential of Spectrum Categorisation Concepts Using Radionuclide Ratios for Comprehensive Nuclear-Test-Ban Treaty Verification.- Impact of monthly radioxenon source time-resolution on atmospheric concentration predictions.- Global Xenon-133 Emission Inventory Caused by Medical Isotope Production and Derived from the Worldwide Technetium-99m Demand.- Detection of Noble Gas Radionuclides from an Underground Nuclear Explosion During a CTBT On Site Inspection.- Modeling Noble Gas Transport and Detection for The Comprehensive Nuclear-Test-Ban Treaty.- Application of Geophysical Techniques in Identifying UNE Signatures at Semipalatinsk Test Site (for OSI Purposes).- Overhead Detection of Underground Nuclear Explosions by Multi-Spectral and Infrared Imaging.