Earth Planets Space, Vol. 62 (No. 2), pp. 215-221, 2010
Earthquake Research Institute, University of Tokyo, Yayoi 1-1-1, Bunkyo-ku, Tokyo 113-0032, Japan
(Received November 18, 2008; Revised April 22, 2009; Accepted May 1, 2009; Online published February 22, 2010)
Heterogeneity sections potentially observed by neutrino radiography
are simulated by using S-velocity tomography models.
All of the velocity heterogeneities in these models
are assumed to be of thermal origin, and the velocity anomalies are
translated into density anomalies by using the scaling relations
obtained from previous laboratory experiments.
Assuming the use of the IceCube Neutrino
Detector, the density anomalies were integrated along the paths
to this detector.
Five tomography models were tested, but the obtained
sections show common features:
paths sampling the CMB region beneath Africa and
paths sampling the root of East Antarctica
Previous studies suggested that these two regions may
be chemically distinct.
Approximate order estimations suggest that
if these regions have 10% density anomalies,
IceCube will detect them in about 300 years.
Key words: Earth's interior, seismic tomography, neutrino radiography.