Analysis On High Rate GNSS Data Co-Seismic Response In Jiuzhaigou 7.0Ms Earthquake

摘要

Jiuzhaigou 7.0Ms Earthquake Occured At 13:19 8th August 2017 (UTC) In Sichuan Province, China. We Processed The High Rate (1Hz) Global Navigation Satellite System(GNSS) Data Of Stations In Two-Hundred Kilometers Distance From Epicenter After One Hour With Ultra-Rapid Ephemeris By TRACK Module Of GAMIT Software And Discovered That There Are Only Two Stations Have Obvious Displacement. Xxx Station Have A Displacement About 1.5 Centimeters Forever And Xxx Station Was Not. Meanwhile, We Processed The Same Data By Rapid Ephemeris And Precise Ephemeris. To Compare, Three Result Almost Have No Difference. Last, We Gave A Group Of Different Distance Reference Stations From Epicenter In One Direction To Process And The Result Of Min And Max Distance Were Not Good, It Must Be A Probable Distance For Selecting Reference Station..