Observing of pre-earthquake transients features in the Earth atmosphere-ionosphere environment associated with M6.4 and M7.1 Ridgecrest, California, Earthquakes of July 2019

Dimitar Ouzounov1, Menas Kafatos1, Giampaolo Guiliani2, Sergey A Pulinets3, Jann Yenq Liu4, Katsumi Hattori5, Manuel Hernandez-Pajares6, Alberto Garcia-Rigo7, Alexander Rozhnoi8, Mariya Solovieva9, Viktor Fedun10, Andrew Papilion11 and Patrick T Taylor12, (1)Chapman University, Center of Excellence in Earth Systems Modeling & Observations, Orange, CA, United States, (2)Giuliani Foundations, L'Aquila, Italy, (3)Space Research Institute (IKI), Moscow, Russia, (4)Institute of Space Science, National Central University, Chung-Li, Taiwan, (5)Graduate School of Science, Chiba University, Chiba, Japan, (6)Univ. Polit. Catalunya (UPC), IonSAT research group, Barcelona, Spain, (7)UPC - CSIC, Barcelona, Spain, (8)Institute of Physics of the Earth, Moskow, Russia, (9)Institute of Physics of the Earth, Moscow, Russia, (10)The University of Sheffield, Sheffield, United Kingdom, (11)Chapman University, Center of Excellence in Earth Systems Modeling & Observations, Orange, VA, United States, (12)NASA Goddard Space Flight Center, Code 61A, Greenbelt, MD, United States