The figure above shows a composite image from GRACE satellite data showing the gravity changes for the Sumatra-Andaman earthquake. (Image courtesy of Shin-Chan Han, Ohio State University.
If you want to know more go and read this
Update.....Finally, I hid a link and published and it worked. Thank you Davo, thank you Ron, thank you Janet, thank you linesmen, thank you ball boys. Now if I could remember how to convert a gif to a jpeg then I could do the post on Brocken Spectres which is really interesting but a photo is worth a thousand words.