Ionospheric changes immediately before the 2023 February Kahramanmaras earthquakes, Turkey

IF 2.8 3区地球科学 Q2 ASTRONOMY & ASTROPHYSICS

Advances in Space Research Pub Date : 2025-02-01 DOI:10.1016/j.asr.2024.11.011

Ihsan Naufal Muafiry , Irwan Meilano , Dudy D. Wijaya , Erman Sentürk , Kosuke Heki

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引用次数: 0

Abstract

The East Anatolian Fault in southern Turkey ruptured on 6 February 2023, causing a M_w 7.8 earthquake. Another large earthquake of M_w 7.5 occurred to the north of the first event ∼9 h later. Here we look for ionospheric precursors immediately before these earthquakes, like those found ∼40 min before the 2011 Tohoku-oki earthquake, Japan, by using the total electron content data obtained by global navigation satellite system receivers. Considering that the changes are small, we first inferred the leading times and the intensities of the anomalies using their empirical relationship with M_w from ∼20 past large earthquakes. For the first earthquake, we found that a positive change of TEC trends started ∼23 min before the rupture and that the anomaly reached ∼2 % of the background. These values were consistent with past events. On the other hand, medium-scale traveling ionospheric disturbance activity hampered convincing detection of changes immediately before the second earthquake.

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来源期刊

Advances in Space Research 地学天文-地球科学综合

CiteScore

5.20

自引率

11.50%

发文量

800

审稿时长

5.8 months

期刊介绍： The COSPAR publication Advances in Space Research (ASR) is an open journal covering all areas of space research including: space studies of the Earth''s surface, meteorology, climate, the Earth-Moon system, planets and small bodies of the solar system, upper atmospheres, ionospheres and magnetospheres of the Earth and planets including reference atmospheres, space plasmas in the solar system, astrophysics from space, materials sciences in space, fundamental physics in space, space debris, space weather, Earth observations of space phenomena, etc. NB: Please note that manuscripts related to life sciences as related to space are no more accepted for submission to Advances in Space Research. Such manuscripts should now be submitted to the new COSPAR Journal Life Sciences in Space Research (LSSR). All submissions are reviewed by two scientists in the field. COSPAR is an interdisciplinary scientific organization concerned with the progress of space research on an international scale. Operating under the rules of ICSU, COSPAR ignores political considerations and considers all questions solely from the scientific viewpoint.