The Investigation of Tropospheric Changes with GNSS: A study on 6 February 2023 Kahramanmaraş Earthquake Sequence

Seda Özarpacı

Makale detayları

The Investigation of Tropospheric Changes with GNSS: A study on 6 February 2023 Kahramanmaraş Earthquake Sequence

Yazarlar:

Seda Özarpacı

Yayıncı:

Istanbul University

Ana Başlıklar:

Geomatic Engineering (Other)

Dergi:

International Journal of Environment and Geoinformatics Vol.11 Issue 1, pp.10-15

Belge Tipi:

Makale

Yayın Tarihi:

3/2024

Belge Dili:

İngilizce

Document ID (Org No.):

2001312668

pISSN:

2148-9173

Anahtar kelimeler:

Özet:

 The earthquakes that occurred in Kahramanmaraş on February 6, 2023, are among the significant seismic events in Turkey. Recorded at moment magnitudes of 7.8 and 7.6 in ten hours on East Anatolian Fault Zone EAFZ, these earthquakes resulted in extensive destruction and loss of lives in the region. The effects of these earthquakes have been actively studied following the events, utilizing geodetic measurement techniques, particularly GNSS measurements, which are commonly employed in earthquake studies for determining tectonic movements and crustal deformations. As known, GNSS signals pass through significant atmospheric layers, namely the ionosphere and troposphere, before reaching the Earths surface, and the influence of these atmospheric layers is evident in the results due to various error sources within these layers. One of the main limiting factors in studies such as determining crustal movements is the influence of the troposphere, as surface velocities are on the order of a few mmyr and require high accuracy at the mm level. In this study, changes in the troposphere during the earthquakes on February 6, 2023, were investigated using tropospheric zenith delays Zenith Total Delay - ZTD computed from GNSS observations. The results indicate the presence of zenith tropospheric delay anomalies at stations close to the fault rupture during and after the main shock, while no such anomalies were observed at distant stations from the fault rupture zone. This finding indicates a relationship between earthquakes and changes occurring in the troposphere.

 The earthquakes that occurred in Kahramanmaraş on February 6, 2023, are among the significant seismic events in Turkey. Recorded at moment magnitudes of 7.8 and 7.6 in ten hours on East Anatolian Fault Zone EAFZ, these earthquakes resulted in extensive destruction and loss of lives in the region. The effects of these earthquakes have been actively studied following the events, utilizing geodetic measurement techniques, particularly GNSS measurements, which are commonly employed in earthquake studies for determining tectonic movements and crustal deformations. As known, GNSS signals pass through significant atmospheric layers, namely the ionosphere and troposphere, before reaching the Earths surface, and the influence of these atmospheric layers is evident in the results due to various error sources within these layers. One of the main limiting factors in studies such as determining crustal movements is the influence of the troposphere, as surface velocities are on the order of a few mmyr and require high accuracy at the mm level. In this study, changes in the troposphere during the earthquakes on February 6, 2023, were investigated using tropospheric zenith delays Zenith Total Delay - ZTD computed from GNSS observations. The results indicate the presence of zenith tropospheric delay anomalies at stations close to the fault rupture during and after the main shock, while no such anomalies were observed at distant stations from the fault rupture zone. This finding indicates a relationship between earthquakes and changes occurring in the troposphere.

 The earthquakes that occurred in Kahramanmaraş on February 6, 2023, are among the significant seismic events in Turkey. Recorded at moment magnitudes of 7.8 and 7.6 in ten hours on East Anatolian Fault Zone EAFZ, these earthquakes resulted in extensive destruction and loss of lives in the region. The effects of these earthquakes have been actively studied following the events, utilizing geodetic measurement techniques, particularly GNSS measurements, which are commonly employed in earthquake studies for determining tectonic movements and crustal deformations. As known, GNSS signals pass through significant atmospheric layers, namely the ionosphere and troposphere, before reaching the Earths surface, and the influence of these atmospheric layers is evident in the results due to various error sources within these layers. One of the main limiting factors in studies such as determining crustal movements is the influence of the troposphere, as surface velocities are on the order of a few mmyr and require high accuracy at the mm level. In this study, changes in the troposphere during the earthquakes on February 6, 2023, were investigated using tropospheric zenith delays Zenith Total Delay - ZTD computed from GNSS observations. The results indicate the presence of zenith tropospheric delay anomalies at stations close to the fault rupture during and after the main shock, while no such anomalies were observed at distant stations from the fault rupture zone. This finding indicates a relationship between earthquakes and changes occurring in the troposphere.

 The earthquakes that occurred in Kahramanmaraş on February 6, 2023, are among the significant seismic events in Turkey. Recorded at moment magnitudes of 7.8 and 7.6 in ten hours on East Anatolian Fault Zone EAFZ, these earthquakes resulted in extensive destruction and loss of lives in the region. The effects of these earthquakes have been actively studied following the events, utilizing geodetic measurement techniques, particularly GNSS measurements, which are commonly employed in earthquake studies for determining tectonic movements and crustal deformations. As known, GNSS signals pass through significant atmospheric layers, namely the ionosphere and troposphere, before reaching the Earths surface, and the influence of these atmospheric layers is evident in the results due to various error sources within these layers. One of the main limiting factors in studies such as determining crustal movements is the influence of the troposphere, as surface velocities are on the order of a few mmyr and require high accuracy at the mm level. In this study, changes in the troposphere during the earthquakes on February 6, 2023, were investigated using tropospheric zenith delays Zenith Total Delay - ZTD computed from GNSS observations. The results indicate the presence of zenith tropospheric delay anomalies at stations close to the fault rupture during and after the main shock, while no such anomalies were observed at distant stations from the fault rupture zone. This finding indicates a relationship between earthquakes and changes occurring in the troposphere.

Makale detayları

The Investigation of Tropospheric Changes with GNSS: A study on 6 February 2023 Kahramanmaraş Earthquake Sequence

Yazarlar:

Seda Özarpacı

Yayıncı:

Istanbul University

Ana Başlıklar:

Geomatic Engineering (Other)

Dergi:

International Journal of Environment and Geoinformatics Vol.11 Issue 1, pp.10-15

Belge Tipi:

Makale

Yayın Tarihi:

3/2024

Belge Dili:

İngilizce

Document ID (Org No.):

2001312668

pISSN:

2148-9173

GNSS

Zenith Troposferic Delay

6 Şubat 2023 Kahramanmaraş Earthquake Sequence

GNSS Meteorology

Sayı

Makale detayları

The Investigation of Tropospheric Changes with GNSS: A study on 6 February 2023 Kahramanmaraş Earthquake Sequence

Yazarlar: Seda Özarpacı

Yayıncı: Istanbul University

Ana Başlıklar: Geomatic Engineering (Other)

Dergi: International Journal of Environment and Geoinformatics Vol.11 Issue 1, pp.10-15

Belge Tipi: Makale

Yayın Tarihi: 3/2024

Belge Dili: İngilizce

Document ID (Org No.): 2001312668

pISSN: 2148-9173

GNSS

Zenith Troposferic Delay

6 Şubat 2023 Kahramanmaraş Earthquake Sequence

GNSS Meteorology

Sayı

Yazarlar:

Seda Özarpacı

Yayıncı:

Istanbul University

Ana Başlıklar:

Geomatic Engineering (Other)

Dergi:

International Journal of Environment and Geoinformatics Vol.11 Issue 1, pp.10-15

Belge Tipi:

Makale

Yayın Tarihi:

3/2024

Belge Dili:

İngilizce

Document ID (Org No.):

2001312668

pISSN:

2148-9173