3D TOMOGRAPHY OF IONOSPHERIC ANOMALIES AFTER THE 2020 TURKEY EARTHQUAKE AND TSUNAMI USING GNSS-TEC

Global Navigation Satellite System (GNSS) satellite observations can obtain Total Electron Content (TEC) values in the ionosphere layer. The TEC value is obtained by decreasing the phase difference of the GNSS satellite’s two carrier waves (L-band). The calculation of the TEC value using GNSS can be...

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Autores principales:	Mokhamad Nur Cahyadi *email correspondence: cahyadi@geodesy.its.ac.id, Ira Mutiara Anjasmara, Ihsan Naufal Muafiry, Nurrohmat Widjajanti, Deasy Arisa, Buldan Muslim, Meilfan Eka Putra
Formato:	article
Lenguaje:	EN
Publicado:	Tsunami Society International 2021
Materias:	3d tomography earthquake gnss total electron content turkey earthquake Oceanography GC1-1581
Acceso en línea:	https://doaj.org/article/6babfaaf3a9745f994886751f2da4e75
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spelling	oai:doaj.org-article:6babfaaf3a9745f994886751f2da4e752021-11-07T23:06:40Z3D TOMOGRAPHY OF IONOSPHERIC ANOMALIES AFTER THE 2020 TURKEY EARTHQUAKE AND TSUNAMI USING GNSS-TEC8755-6839https://doaj.org/article/6babfaaf3a9745f994886751f2da4e752021-10-01T00:00:00Zhttp://www.tsunamisociety.org/403CahyadiEtAl.pdfhttps://doaj.org/toc/8755-6839Global Navigation Satellite System (GNSS) satellite observations can obtain Total Electron Content (TEC) values in the ionosphere layer. The TEC value is obtained by decreasing the phase difference of the GNSS satellite’s two carrier waves (L-band). The calculation of the TEC value using GNSS can be used in disaster phenomena such as earthquakes observed in this study. The earthquake phenomenon can cause vertical deformation in the Earth’s crust, resulting in the appearance of acoustic waves propagating towards the ionosphere layer and changes in the ionosphere density in a moment. A propagating gravity wave has a speed of 0.3 km/ s towards the ionosphere layer. This disturbed ionosphere layer was detected within minutes of the mainshock. The anomaly in this study was detected by Global Positioning System (GPS) Pseudo Random Noise (PRN) 16 from 16 observation GNSS stations on the mainland of Turkey. The observed ionosphere anomalies were then modeled using tomography modelling to obtain spatial information from these anomalies. The tomography results found that the PRN 16 GPS satellites contained positive and negative anomalies located northeast of the epicenter.Mokhamad Nur Cahyadi *email correspondence: cahyadi@geodesy.its.ac.idIra Mutiara AnjasmaraIhsan Naufal MuafiryNurrohmat WidjajantiDeasy ArisaBuldan MuslimMeilfan Eka PutraTsunami Society Internationalarticle3d tomographyearthquakegnsstotal electron contentturkey earthquakeOceanographyGC1-1581ENScience of Tsunami Hazards, Vol 40, Iss 3, Pp 166-177 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	3d tomography earthquake gnss total electron content turkey earthquake Oceanography GC1-1581
spellingShingle	3d tomography earthquake gnss total electron content turkey earthquake Oceanography GC1-1581 Mokhamad Nur Cahyadi *email correspondence: cahyadi@geodesy.its.ac.id Ira Mutiara Anjasmara Ihsan Naufal Muafiry Nurrohmat Widjajanti Deasy Arisa Buldan Muslim Meilfan Eka Putra 3D TOMOGRAPHY OF IONOSPHERIC ANOMALIES AFTER THE 2020 TURKEY EARTHQUAKE AND TSUNAMI USING GNSS-TEC
description	Global Navigation Satellite System (GNSS) satellite observations can obtain Total Electron Content (TEC) values in the ionosphere layer. The TEC value is obtained by decreasing the phase difference of the GNSS satellite’s two carrier waves (L-band). The calculation of the TEC value using GNSS can be used in disaster phenomena such as earthquakes observed in this study. The earthquake phenomenon can cause vertical deformation in the Earth’s crust, resulting in the appearance of acoustic waves propagating towards the ionosphere layer and changes in the ionosphere density in a moment. A propagating gravity wave has a speed of 0.3 km/ s towards the ionosphere layer. This disturbed ionosphere layer was detected within minutes of the mainshock. The anomaly in this study was detected by Global Positioning System (GPS) Pseudo Random Noise (PRN) 16 from 16 observation GNSS stations on the mainland of Turkey. The observed ionosphere anomalies were then modeled using tomography modelling to obtain spatial information from these anomalies. The tomography results found that the PRN 16 GPS satellites contained positive and negative anomalies located northeast of the epicenter.
format	article
author	Mokhamad Nur Cahyadi *email correspondence: cahyadi@geodesy.its.ac.id Ira Mutiara Anjasmara Ihsan Naufal Muafiry Nurrohmat Widjajanti Deasy Arisa Buldan Muslim Meilfan Eka Putra
author_facet	Mokhamad Nur Cahyadi *email correspondence: cahyadi@geodesy.its.ac.id Ira Mutiara Anjasmara Ihsan Naufal Muafiry Nurrohmat Widjajanti Deasy Arisa Buldan Muslim Meilfan Eka Putra
author_sort	Mokhamad Nur Cahyadi *email correspondence: cahyadi@geodesy.its.ac.id
title	3D TOMOGRAPHY OF IONOSPHERIC ANOMALIES AFTER THE 2020 TURKEY EARTHQUAKE AND TSUNAMI USING GNSS-TEC
title_short	3D TOMOGRAPHY OF IONOSPHERIC ANOMALIES AFTER THE 2020 TURKEY EARTHQUAKE AND TSUNAMI USING GNSS-TEC
title_full	3D TOMOGRAPHY OF IONOSPHERIC ANOMALIES AFTER THE 2020 TURKEY EARTHQUAKE AND TSUNAMI USING GNSS-TEC
title_fullStr	3D TOMOGRAPHY OF IONOSPHERIC ANOMALIES AFTER THE 2020 TURKEY EARTHQUAKE AND TSUNAMI USING GNSS-TEC
title_full_unstemmed	3D TOMOGRAPHY OF IONOSPHERIC ANOMALIES AFTER THE 2020 TURKEY EARTHQUAKE AND TSUNAMI USING GNSS-TEC
title_sort	3d tomography of ionospheric anomalies after the 2020 turkey earthquake and tsunami using gnss-tec
publisher	Tsunami Society International
publishDate	2021
url	https://doaj.org/article/6babfaaf3a9745f994886751f2da4e75
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3D TOMOGRAPHY OF IONOSPHERIC ANOMALIES AFTER THE 2020 TURKEY EARTHQUAKE AND TSUNAMI USING GNSS-TEC

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