Fig. 4.• hematic Power S• cua of Variations in• e• ng• of t• Day. observed solid Earth
nutations, and to determine the non-hydrostatic part of the Core-Mantle Boundary (CMB) …

Maps of the fluid flow at the core surface are important for a number of reasons: foremost
they may provide some insight into the workings of the geodynamo and may place useful …

A Srsingle bondNdsingle bondPb isotope data base is available now which includes over
300 samples from some 43 oceanic islands or island groups. This data base supports the …

Topics involved in studies of the Earth's magnetic field and its secular variation range from
the intricate observations of geomagnetism, to worldwide studies of archeomagnetism and …

This is the third paper in a four‐part sequence that examines the nature of mantle layering
using the multiple‐ScS phases and internal reflections observed within the reverberative …

Laboratory experiments document that liquid iron reacts chemically with silicates at high
pressures (≥ 2.4× 1010 Pascals) and temperatures. In particular,(Mg, Fe) SiO3 perovskite …

A recent model for polarity reversals suggested that reversals involve critical interactions
between the primary (dipole) and secondary (quadrupole) dynamo families. This model …

The three-dimensional maps of the earth's interior now span regions from the bottom of the
crust to the inner core of the earth. Although a wealth of new information on the dynamics of …

Separate inversions of travel-time residuals of waves reflected from and transmitted through
the core-mantle boundary yield similar results in terms of spherical harmonic expansion of …

We analyse over 175000 magnetic observations from an interval spanning 1695-1980 to
produce a sequence of maps of the magnetic field at the core-mantle boundary; we find that …