Anomalous Events, Surface Wave Propagation, and Tectonics of Central Asia
Semi-annual rept. no. 1. 1 Oct 1976-31 Mar 1977
LAMONT-DOHERTY GEOLOGICAL OBSERVATORY PALISADES NY
Pagination or Media Count:
A portion of a study of intra-plate seismicity, alkaline magmatism and other tectonism post-dating continental separation related to the tectonics of the French test site in Algeria. This study shows that the test site is not in the middle of a shield area. The tectonic setting is significant in some studies of the estimation of yield from seismic amplitude. A study is underway to determine how well the source parameters of an earthquake can be prescribed by a limited number of seismic stations. Both WWSSN and VLP stations are being used, but emphasis is being placed on the VLP data. Earthquakes from a Mid- Atlantic Ridge swarm are being used as the basic data set. A study of the velocity structure under the Tibetan Plateau using normal and higher mode surface waves recorded by nearby WWSSN stations.