On the plane in Journey to the Center of the Earth, Trevor is trying to decipher a code, and he thinks it has something to do with what scientific...

Just to
be clear, this question relates to the 2008 film and not the
originalstory.

In the scene referred to above, Trevor Anderson is on board a
plane with his nephew Sean, headed for Iceland. Once there, they hope to investigate the remote
volcano, where Max Anderson, Trevor's brother and Sean's father, met his doom ten years
previously.

Trevor is deciphering some notations that Max made in his book.
They consist of a bunch of letters arranged in pairs. For example "S-A",
"I-S", and "G-G". There's also "P-B". Trevor seizes upon this
example and says that there appears to be some kind of code behind the letters in Max's notebook
that he thinks might have something to do with the periodic table.
As even those of us with almost zero scientific knowledge know, Pb is the
chemical symbol for lead. It's derived from the Latin word for lead, which is
plumbum.

Trevor works out that "S-A" most
probably stands for Sigurbj¶rn sgeirsson, who happens to be the executive director of the
sgeirsson Institute for Progressive Volcanology. Trevor's certain that Max must have known
this guy, so he determines that the Institute will be his and Sean's first port of call once
they touch down in Iceland.