What are the specifics of the scrolling event in ionic?

I'm trying to pinpoint the source of an issue and it would be helpful to know: when you're scrolling vertically in an Ionic app, what's the event that is being captured, and what element has the event listener? The structure I'm seeing in the browser is this:

ion-nav-view
    ion-side-menus
        ion-side-menu-content
            ion-nav-view
                ion-view
                    ion-content
                        div.scroll

It's the div.scroll that's actually scrolling via changes to the value of its -webkit-transform property. But what element actually has the event listener for the user's gesture, and what event is it listening for? Thanks!