Surname: Zhou First Name: Qina Status= studentyes Institution: Penn State University E-mail: qxz107@psu.edu ---------------------------------------- Title: INHOMOGENEOUS STRUCTURE OF IONOSPHERE OVER ARECIBO ---------------------------------------- Authors: Qina zhou; J.D. Mathews; Q.H. Zhou ---------------------------------------- Abstract: F region tilt structure of electron density over Arecibo is presented in the poster. The way to identify it, its characteristic, and what may causes it will also be discussed. ---------------------------------------- Discipline Category: Ionosphere