Turkish Journal of Earth Sciences
DOI
10.3906/yer-2107-9
Abstract
A major earthquake (Mw=7.0) occurred in the Samos Island on the 30th of October 2020 at 11:51 UTC. Swarm satellite magnetic data were analysed for 153 days before and 46 days after the earthquake. Preearthquake and postearthquake anomaly search is constrained within the Dobrovolsky's Circular Area. Fundamentally, there are 5 steps for processing satellite magnetic data to interpret the earthquake preparation phase. The first step is converting geographical coordinates to geomagnetic latitude and longitude. Secondly, intensity of the external magnetic field should be evaluated by magnetic indices (Ap, Kp and Dst). Thirdly, preearthquake and postearthquake magnetic anomaly should be constrained through magnetic indices (Ap < 20, Kp ≤ 3 and Dst
Keywords
Satellite magnetic data, precursory earthquake signals, Swarm satellite constellation, magnetic field components, Samos 2020 earthquake
First Page
748
Last Page
757
Recommended Citation
ÖZSÖZ, İLKİN and PAMUKÇU, OYA ANKAYA
(2021)
"Detection and interpretation of precursory magnetic signals preceding October 30, 2020 Samos earthquake,"
Turkish Journal of Earth Sciences: Vol. 30:
No.
8, Article 4.
https://doi.org/10.3906/yer-2107-9
Available at:
https://journals.tubitak.gov.tr/earth/vol30/iss8/4
