Publications by the Virtually Hawaii group. All virtually Hawaii texts and figures are copyrighted by Pete Mouginis-Mark, Hawaii Institute of Geophysics and Planetology, 2525 Correa road, Honolulu HI 96822. All rights reserved. No part of these publications may be reproduced or stored in a digital system different from this world-wide-web server. No image embedded in these publications may be pointed to by other world-wide-web servers without explicit reference to this copyright notice. Unless stated differently in a separate notice attached to a publication, permission is hereby granted to download and print single copies for personal use, assimilated to making a photocopy from journals in a library, provided that this copyright notice is attached. Further redistribution, whether in electronic or printed form, as well as partial use of text, figures or images in works by other authors, whether in electronic or printed form, requires written permission by the copyright holders. Please contact us if you wish to use some of this material. Additional copyright restrictions and the name of the copyright holder if different from the authors are given in separate copyright notices attached to some publications.