Atmospheric effects in SAR interferometry, implications on interpretation and modeling surface deformation: A case study of the 1999 (MW=7.4) Izmit earthquake, Turkey

Ziyadin Çakir; Jean Bernard De Chabalier; Alexis Rigo; Rolando Armijo

Atmospheric effects in SAR interferometry, implications on interpretation and modeling surface deformation: A case study of the 1999 (MW=7.4) Izmit earthquake, Turkey

Ziyadin Çakir^*, Jean Bernard De Chabalier, Alexis Rigo, Rolando Armijo

^*Corresponding author for this work

Research output: Contribution to journal › Conference article › peer-review

1 Citation (Scopus)

Abstract

We show in this study that the coseismic interferograms of the 17 August 1999 Izmit, Turkey earthquake include atmospheric signal correlated with topography. The phase-elevation ratio decreases with increasing elevation, reaching up to 10 cm of relative phase delay. Although the phase-elevation ratio also varies laterally, a simple, horizontally uniform model for atmospheric effects is calculated using a digital elevation model. Correction of the observed interferograms with this model reveals that some of the anomalies in the fringe pattern, which were previously interpreted to be the sign of triggered slip, are most probably due to the changes in atmospheric conditions. The model also reveals some large scale artefacts previously undetected.

Original language	English
Pages (from-to)	1-6
Number of pages	6
Journal	European Space Agency, (Special Publication) ESA SP
Issue number	550
Publication status	Published - 2004
Externally published	Yes
Event	Proceedings of FRINGE 2003 Workshop - Frascati, Italy Duration: 1 Dec 2003 → 5 Dec 2003

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title = "Atmospheric effects in SAR interferometry, implications on interpretation and modeling surface deformation: A case study of the 1999 (MW=7.4) Izmit earthquake, Turkey",

abstract = "We show in this study that the coseismic interferograms of the 17 August 1999 Izmit, Turkey earthquake include atmospheric signal correlated with topography. The phase-elevation ratio decreases with increasing elevation, reaching up to 10 cm of relative phase delay. Although the phase-elevation ratio also varies laterally, a simple, horizontally uniform model for atmospheric effects is calculated using a digital elevation model. Correction of the observed interferograms with this model reveals that some of the anomalies in the fringe pattern, which were previously interpreted to be the sign of triggered slip, are most probably due to the changes in atmospheric conditions. The model also reveals some large scale artefacts previously undetected.",

author = "Ziyadin {\c C}akir and {De Chabalier}, {Jean Bernard} and Alexis Rigo and Rolando Armijo",

year = "2004",

language = "English",

pages = "1--6",

journal = "European Space Agency, (Special Publication) ESA SP",

issn = "0379-6566",

publisher = "European Space Agency",

number = "550",

note = "Proceedings of FRINGE 2003 Workshop ; Conference date: 01-12-2003 Through 05-12-2003",

}

Atmospheric effects in SAR interferometry, implications on interpretation and modeling surface deformation: A case study of the 1999 (MW=7.4) Izmit earthquake, Turkey. / Çakir, Ziyadin; De Chabalier, Jean Bernard; Rigo, Alexis et al.
In: European Space Agency, (Special Publication) ESA SP, No. 550, 2004, p. 1-6.

Research output: Contribution to journal › Conference article › peer-review

TY - JOUR

T1 - Atmospheric effects in SAR interferometry, implications on interpretation and modeling surface deformation

T2 - Proceedings of FRINGE 2003 Workshop

AU - Çakir, Ziyadin

AU - De Chabalier, Jean Bernard

AU - Rigo, Alexis

AU - Armijo, Rolando

PY - 2004

Y1 - 2004

N2 - We show in this study that the coseismic interferograms of the 17 August 1999 Izmit, Turkey earthquake include atmospheric signal correlated with topography. The phase-elevation ratio decreases with increasing elevation, reaching up to 10 cm of relative phase delay. Although the phase-elevation ratio also varies laterally, a simple, horizontally uniform model for atmospheric effects is calculated using a digital elevation model. Correction of the observed interferograms with this model reveals that some of the anomalies in the fringe pattern, which were previously interpreted to be the sign of triggered slip, are most probably due to the changes in atmospheric conditions. The model also reveals some large scale artefacts previously undetected.

AB - We show in this study that the coseismic interferograms of the 17 August 1999 Izmit, Turkey earthquake include atmospheric signal correlated with topography. The phase-elevation ratio decreases with increasing elevation, reaching up to 10 cm of relative phase delay. Although the phase-elevation ratio also varies laterally, a simple, horizontally uniform model for atmospheric effects is calculated using a digital elevation model. Correction of the observed interferograms with this model reveals that some of the anomalies in the fringe pattern, which were previously interpreted to be the sign of triggered slip, are most probably due to the changes in atmospheric conditions. The model also reveals some large scale artefacts previously undetected.

UR - http://www.scopus.com/inward/record.url?scp=18644368868&partnerID=8YFLogxK

M3 - Conference article

AN - SCOPUS:18644368868

SN - 0379-6566

SP - 1

EP - 6

JO - European Space Agency, (Special Publication) ESA SP

JF - European Space Agency, (Special Publication) ESA SP

IS - 550

Y2 - 1 December 2003 through 5 December 2003

ER -

Atmospheric effects in SAR interferometry, implications on interpretation and modeling surface deformation: A case study of the 1999 (MW=7.4) Izmit earthquake, Turkey

Abstract

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