TY - JOUR
T1 - Measurement of three-dimensional surface deformation by Cosmo-SkyMed X-band radar interferometry
T2 - Application to the March 2011 Kamoamoa fissure eruption, Kilauea Volcano, Hawai'i
AU - Jo, Min Jeong
AU - Jung, Hyung Sup
AU - Won, Joong Sun
AU - Lundgren, Paul
N1 - Publisher Copyright:
© 2015 Elsevier Inc.
PY - 2015/11/1
Y1 - 2015/11/1
N2 - 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.
AB - 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.
KW - 3D surface deformation
KW - Kamoamoa fissure eruption
KW - Kilauea Volcano
KW - MAI
KW - Magma source model
KW - SAR interferometry
KW - Spheroid model
KW - Yang model
UR - http://www.scopus.com/inward/record.url?scp=84940206011&partnerID=8YFLogxK
U2 - 10.1016/j.rse.2015.08.003
DO - 10.1016/j.rse.2015.08.003
M3 - Article
AN - SCOPUS:84940206011
SN - 0034-4257
VL - 169
SP - 176
EP - 191
JO - Remote Sensing of Environment
JF - Remote Sensing of Environment
ER -