Hello Petra...I was up to something a little similar a year or 2 ago and got a copywrite on my idea...you can't copywrite an idea, but you can write up a 2 page "treatment" and copywrite that. I thought it would cost $300 for a lawyer to do this but it ended up costing $500. This may be something that you can do yourself for a small fee. Not clear what your intentions are for what you are working on. Concerning the link...the map underestimates the hazard from the nearshore structure big-time. Mark Legg and I have discussed this...we interpret the Palos Verdes anticlinorium very differently.
Chris