Abstract
A map of laterally varying D″ velocities is obtained for the region from 50°S to 50°N in latitude and 70°E to 190°E in longitude. Velocities are found using an analysis of the differential travel time residuals from 481 ScS-S and 266 sScS-sS phase pairs. The long-period data are taken from the Global Digital Seismograph Network digital waveform catalog for the time period of January 1980 to March 1987. The resulting map reveals significant long-wavelength D″ structure including a 3% low-velocity region beneath northeastern Indonesia, surrounded by three identified high-velocity zones beneath northwestern Pacifica (+4%), Southeast Asia(+3%), and Australia (+3-5%). -from Authors
| Original language | English |
|---|---|
| Pages (from-to) | 13,667-13,684 |
| Journal | Journal of Geophysical Research: Biogeosciences |
| Volume | 99 |
| Issue number | B7 |
| State | Published - 1994 |