Monitoring the Comprehensive Nuclear-Test-Ban Treaty: Surface Waves

ISBN-13: 9783764365516 / Angielski / Miękka / 2001 / 243 str.

Anatoli L. Levshin; M. H. Ritzwoller; A. L. Levshin

Opis

On September 1996, the United Nations General Assembly adopted the Comprehensive Nuclear-Test-Ban Treaty (CTBT), prohibiting nuclear explosions worldwide, in all environments. The treaty calls for a global verification system, including a network of 321 monitoring stations distributed around the globe, a data communications network, an international data center (IDC), and on-site inspections to verify compliance. Seismic methods play the lead role in monitoring the CTBT. This volume concentrates on the measurement and use of surface waves in monitoring the CTBT. Surface waves have three principal applications in CTBT monitoring: to help discriminate nuclear explosions from other sources of seismic energy, to provide mathematical characterizations of the seismic energy that emanates from seismic sources, and to be used as data in inversion for the seismic velocity structure of the crust and uppermost mantle for locating small seismic events regionally. The papers in this volume fall into two general categories: the development and/or application of methods to summarize information in surface waves, and the use of these summaries to advance the art of surface-wave identification, measurement, and source characterization. These papers cut across essentially all of the major applications of surface waves to monitoring the CTBT. This volume therefore provides a general introduction to the state of research in this area and should be useful as a guide for further exploration.

Spis treści

Preface: Monitoring the Comprehensive Nuclear-Test-Ban Treaty.- A Fast and Reliable Method for Surface Wave Tomography.- Global Models of Surface Wave Group Velocity.- Optimization of Cell Parameterizations for Tomographic Inverse Problems.- Surface Wave Velocities Across Arabia.- A Surface Wave Dispersion Study of the Middle East and North Africa for Monitoring the Comprehensive Nuclear-Test-Ban Treaty.- One-dimensional Shear Velocity Structure of Northern Africa from Rayleigh Wave Group Velocity Dispersion.- Isotropic and Nonisotropic Components of Earthquakes and Nuclear Explosions on the Lop Nor Test Site, China.- Theoretical and Observed Depth Correction for Ms.- Automated Detection, Extraction, and Measurement of Regional Surface Waves.- Optimization of Surface Wave Identification and Measurement.