TY - JOUR
T1 - Effects of compressibility on the temperature jump at the interface of layered, spherical‐shell convection
AU - Yuen, David A.
AU - Zhang, Shuxia
AU - Langenberger, Sherri E.
PY - 1988/5
Y1 - 1988/5
N2 - Large temperature jumps at the interface of layered convection are important to the argument used against the likelihood of separate circulations in the upper and lower mantles. We study this problem within the framework of a compressible, constant viscosity spherical‐shell model. Both mechanical and thermal coupling configurations are considered. Although the temperature jumps are reduced by compressibility, their magnitudes remain quite large, 0(10³°C), in the case of mechanical coupling. For thermal coupling the temperature jumps become smaller but still are substantial, between 500 to 1000 °C. In layered spherical‐shell convection, flows in the lower mantle are several times greater than the surface velocities.
AB - Large temperature jumps at the interface of layered convection are important to the argument used against the likelihood of separate circulations in the upper and lower mantles. We study this problem within the framework of a compressible, constant viscosity spherical‐shell model. Both mechanical and thermal coupling configurations are considered. Although the temperature jumps are reduced by compressibility, their magnitudes remain quite large, 0(10³°C), in the case of mechanical coupling. For thermal coupling the temperature jumps become smaller but still are substantial, between 500 to 1000 °C. In layered spherical‐shell convection, flows in the lower mantle are several times greater than the surface velocities.
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U2 - 10.1029/GL015i005p00447
DO - 10.1029/GL015i005p00447
M3 - Article
AN - SCOPUS:0023698008
SN - 0094-8276
VL - 15
SP - 447
EP - 450
JO - Geophysical Research Letters
JF - Geophysical Research Letters
IS - 5
ER -