Dependence of depth anomalies upon latitude and plate motion
Article first published online: 20 SEP 2012
Copyright 1977 by the American Geophysical Union.
Journal of Geophysical Research
Solid Earth and Planets
Volume 82, Issue 33, pages 5329–5335, 10 November 1977
How to Cite
1977), Dependence of depth anomalies upon latitude and plate motion, J. Geophys. Res., 82(33), 5329–5335, doi:10.1029/JB082i033p05329., and (
- Issue published online: 20 SEP 2012
- Article first published online: 20 SEP 2012
- Manuscript Accepted: 6 JUN 1977
- Manuscript Received: 22 DEC 1976
Ridge crests are roughly 700 m deeper at the equator than they are in high latitudes. The flanks of the East Pacific Rise show a similar latitude dependence. In addition, there are wavelike depth anomalies with heights of 0.7–1.0 km and wavelengths of 4000 km that extend across the Pacific and Nazca plates. They have long dimensions parallel to plate motions and except for wavelength resemble the anomalies predicted for horizontal convection cells.