Mapping three-dimensional surface deformation by combining multiple-aperture interferometry and conventional interferometry: Application to the June 2007 eruption of Kilauea Volcano, Hawaii

IEEE Geoscience and Remote Sensing Letters
By: , and 

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Abstract

Surface deformation caused by an intrusion and small eruption during June 17-19, 2007, along the East Rift Zone of Kilauea Volcano, Hawaii, was three-dimensionally reconstructed from radar interferograms acquired by the Advanced Land Observing Satellite (ALOS) phased-array type L-band synthetic aperture radar (SAR) (PALSAR) instrument. To retrieve the 3-D surface deformation, a method that combines multiple-aperture interferometry (MAI) and conventional interferometric SAR (InSAR) techniques was applied to one ascending and one descending ALOS PALSAR interferometric pair. The maximum displacements as a result of the intrusion and eruption are about 0.8, 2, and 0.7 m in the east, north, and up components, respectively. The radar-measured 3-D surface deformation agrees with GPS data from 24 sites on the volcano, and the root-mean-square errors in the east, north, and up components of the displacement are 1.6, 3.6, and 2.1 cm, respectively. Since a horizontal deformation of more than 1 m was dominantly in the north-northwest-south-southeast direction, a significant improvement of the north-south component measurement was achieved by the inclusion of MAI measurements that can reach a standard deviation of 3.6 cm. A 3-D deformation reconstruction through the combination of conventional InSAR and MAI will allow for better modeling, and hence, a more comprehensive understanding, of the source geometry associated with volcanic, seismic, and other processes that are manifested by surface deformation.

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Additional publication details

Publication type Article
Publication Subtype Journal Article
Title Mapping three-dimensional surface deformation by combining multiple-aperture interferometry and conventional interferometry: Application to the June 2007 eruption of Kilauea Volcano, Hawaii
Series title IEEE Geoscience and Remote Sensing Letters
DOI 10.1109/LGRS.2010.2051793
Volume 8
Issue 1
Year Published 2011
Language English
Publisher IEEE
Publisher location http://www.ieee.org/index.html
Contributing office(s) Volcano Science Center, Earth Resources Observation and Science (EROS) Center, Hawaiian Volcano Observatory
Description 5 p.
Larger Work Type Article
Larger Work Subtype Journal Article
Larger Work Title IEEE Geoscience and Remote Sensing Letters
First page 34
Last page 38
Country United States
State Hawai'i
Other Geospatial Mount Kilauea