Plate Tectonics and the Discrimination of Underground Explosions from Earthquakes
Abstract
During the term of this contract, research was carried out in the following areas of interest to the contract: (1) A study of the velocity structure under the Tibetan Plateau using at least ten Tibetan earthquakes recorded by nearby WWSSN stations; (2) A study of causes of variations in Ms/mb relation for a central Asian earthquake sequence. The purpose of the study is to determine what factors other than source depth and focal mechanism control the surface wave magnitude for small events; (3) A study of the distribution of great shallow earthquakes; (4) A study to determine how well data from two or three of the High-Gain, Long-Period (HGLP) Seismograph Stations can prescribe an earthquake; (5) This study involves application of several numerical techniques for calculating theoretical seismograms; and (6) Several studies have been conducted which involve the determination of stress orientation in island arcs from volcanic structures, the role of volcanic eruptions in the time history of major seismic gaps, or the mapping of fine structure within slabs of underthrusting lithosphere.
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 01, 1977
- Accession Number
- ADA041904
Entities
People
- Andrew J Murphy
- Lynn R. Sykes
Organizations
- Lamont–Doherty Earth Observatory