Measurement of three-dimensional surface deformation by Cosmo-SkyMed X-band radar interferometry: Application to the March 2011 Kamoamoa fissure eruption, Kilauea Volcano, Hawai'i

Min Jeong Jo, Hyung Sup Jung, Joong-sun Won, Paul Lundgren

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Abstract

Three-dimensional (3D) surface deformation is retrieved for the March 6-10, 2011 (UTC dates), Kamoamoa fissure eruption along the East Rift Zone of Kilauea Volcano, Hawai'i, through the integration of multi-temporal synthetic aperture radar (SAR) interferometry (InSAR) and multiple-aperture interferometry (MAI) measurements from the COSMO-SkyMed X-band SAR. The measurement accuracies of 1) the individual and multi-stacked MAI interferograms and 2) the 3D deformation, which is measured from COSMO-SkyMed data, are assessed using continuous GPS stations. The root-mean-square (RMS) errors of individual MAI interferograms for descending and ascending data are 2.97. ±. 0.6. cm and 3.20. ±. 0.62. cm, respectively. The MAI interferograms stacked from multi-temporal observations can produce better results by emphasizing surface deformation signals, with the RMS errors of 1.06 and 1.24. cm for descending and ascending data, respectively. The empirical equations for measurement uncertainties are determined with respect to interferometric coherence for individual and stacked MAI interferograms. An assessment of the 3D components of deformation was performed as well, and RMS errors of 0.75, 0.83, and 0.68. cm were estimated in the east, north, and up directions. A performance test of magma source model parameter estimations was carried out by using the InSAR and 3D measurements. From the 3D deformation field, we found that the magma chamber source at the Kilauea caldera should be modeled by the spheroid source rather than the simple point source. The performance comparison between the InSAR and 3D modeled results showed that the 3D deformation field allows for precise model parameter estimation.

Original languageEnglish
Pages (from-to)176-191
Number of pages16
JournalRemote Sensing of Environment
Volume169
DOIs
Publication statusPublished - 2015 Nov 1

Fingerprint

Volcanoes
radar interferometry
volcanoes
radar
fissure
Interferometry
interferometry
Radar
volcano
volcanic eruption
Mean square error
COSMO-SkyMed
Synthetic aperture radar
Parameter estimation
synthetic aperture radar
rift zone
caldera
magma chamber
point source
Global positioning system

All Science Journal Classification (ASJC) codes

  • Soil Science
  • Geology
  • Computers in Earth Sciences

Cite this

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title = "Measurement of three-dimensional surface deformation by Cosmo-SkyMed X-band radar interferometry: Application to the March 2011 Kamoamoa fissure eruption, Kilauea Volcano, Hawai'i",
abstract = "Three-dimensional (3D) surface deformation is retrieved for the March 6-10, 2011 (UTC dates), Kamoamoa fissure eruption along the East Rift Zone of Kilauea Volcano, Hawai'i, through the integration of multi-temporal synthetic aperture radar (SAR) interferometry (InSAR) and multiple-aperture interferometry (MAI) measurements from the COSMO-SkyMed X-band SAR. The measurement accuracies of 1) the individual and multi-stacked MAI interferograms and 2) the 3D deformation, which is measured from COSMO-SkyMed data, are assessed using continuous GPS stations. The root-mean-square (RMS) errors of individual MAI interferograms for descending and ascending data are 2.97. ±. 0.6. cm and 3.20. ±. 0.62. cm, respectively. The MAI interferograms stacked from multi-temporal observations can produce better results by emphasizing surface deformation signals, with the RMS errors of 1.06 and 1.24. cm for descending and ascending data, respectively. The empirical equations for measurement uncertainties are determined with respect to interferometric coherence for individual and stacked MAI interferograms. An assessment of the 3D components of deformation was performed as well, and RMS errors of 0.75, 0.83, and 0.68. cm were estimated in the east, north, and up directions. A performance test of magma source model parameter estimations was carried out by using the InSAR and 3D measurements. From the 3D deformation field, we found that the magma chamber source at the Kilauea caldera should be modeled by the spheroid source rather than the simple point source. The performance comparison between the InSAR and 3D modeled results showed that the 3D deformation field allows for precise model parameter estimation.",
author = "Jo, {Min Jeong} and Jung, {Hyung Sup} and Joong-sun Won and Paul Lundgren",
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