The literary device the writer Dante uses in this excerpt for allowing the readers a better understanding of the scene is Imagery:
The ideas of a "blasting sound" or of a roar that causes "both sides of the shore to tremble" appeal to a person's sense of hearing. In sum, this can be identified as an imagery device since the words or phrases used allow the reader, appealing to human senses, to make a visual or mental representation of the story scenario.
