Luisa Capannolo¹, Wen Li¹, Qianli Ma², Xiaochen Shen¹, Harlan E. Spence³, John Glen Sample⁴, Arlo Johnson⁴, Mykhaylo Shumko⁴, David M Klumpar⁴ and Robert J Redmon⁵, (1)Boston University, Boston, MA, United States, (2)UCLA, Los Angeles, United States, (3)University of New Hampshire, Durham, NH, United States, (4)Montana State University, Bozeman, MT, United States, (5)Natl Geophysical Data Ctr, Boulder, CO, United States