We are new to Arkham Horror but enjoying it a bit. I was playing the Novelist- can't remember her name, but she has the OW ability that allows her to draw two OW cards that match her color, and choose the one to encounter. I was sucked through a gate and eventually came out and got an explored token. On my Arkham Encounter phase I found myself unable to seal the gate, and instead simply wanted to reenter the gate, hoping my ability would pay off for me. We couldn't find any rules the either forbade or permitted this. Help!

The official rules say that when you come back from a gate you get an Explored token. As long as you have the explored token, you may only choose to close the gate or to do nothing on the Arkham encounter phase; it does not say that you can voluntarily discard the explored token and enter the gate. In order to lose the explored token, you must leave the gate's location.

In this case, it looks like you'd probably want to walk into the street and come back to the gate. Any monsters in your way, of course, could compromise this tactic.

Seems silly, I know, but so far as everyone here can conclude, those are the rules.

Yeah what you are doing is fine by the rulebook, but you have to ditch the explored token, and the only way to do that is to move.