"The main factor is the earthquake's size," "But then there is also the earthquake depth.

VOA: standard.2010.01.13

You need to factor in the depth of your vessel.

WSJ: Trough Gardening: A Challenger to the Terrarium Craze?

Taking cues from its Alpha A99, which was just announced today, Sony brought that camera's 24.3-megapixel full-frame sensor to a camcorder form factor, delivering shallow depth-of-field and much improved low-light sensitivity in a more practical package.

ENGADGET: Sony announces NEX-VG30 and full-frame NEX-VG900 Handycams, we go hands-on

One aspect of this paper is an in-depth analysis justifying and calculating the GIA factor, which was originally described in Peltier 2002, which is also cited by the CU sea level group.

FORBES: NASA-Funded Group Doctors Sea Level Data