Detection of ruptures of Andaman fault segments in the 2004 great Sumatra earthquake with coseismic ionospheric disturbances

• Main Authors: Kosuke Heki, Yuichi Otsuka, Nithiwatthn Choosakul, Narong Hemmakorn, Tharadol Komolmis, Takashi Maruyama
• Format: Journal
• Published: 2018
• Subjects: Earth and Planetary Sciences; Physics and Astronomy
• Online Access: https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=34249914412&origin=inward; http://cmuir.cmu.ac.th/jspui/handle/6653943832/61628
• Institution: Chiang Mai University

We Near-field coseismic perturbations of ionospheric total electron content (TEC), caused by direct acoustic waves from focal regions, can be observed with Global Positioning System (GPS). They appear 10-15 min after the earthquake with typical periods of ∼4-5 min and propagate as fast as ∼1 km/s to...