Images "sink" animation

Question

I have my Storyboard animation which is moving images to specific (Canvas.SetTop) coordination. I wonder if there is an option to make those images go to specific coordination but make them sink NOT dissapear. I am using DoubleAnimations in Storyboard.

 DoubleAnimation myAnimation = new DoubleAnimation();
 myAnimation.SpeedRatio = 3;
 myAnimation.AutoReverse = false;
 myAnimation.From = 0;
 myAnimation.To = 700;
 myAnimation.Duration = new Duration(TimeSpan.FromSeconds(2));
 myAnimation.BeginTime = beginTime;
 this.beginTime += TimeSpan.FromMilliseconds(300);