The 2010 slow slip event and secular motion at Kilauea, Hawai`i inferred from TerraSAR-X InSAR data

Journal of Geophysical Research B: Solid Earth
By: , and 

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Abstract

We present here an Small BAseline Subset (SBAS) algorithm to extract both transient and secular ground deformations on the order of millimeters in the presence of tropospheric noise on the order of centimeters, when the transient is of short duration and known time, and the background deformation is smooth in time. We applied this algorithm to study the 2010 slow slip event as well as the secular motion of Kīlauea's south flank using 49 TerraSAR-X images. We also estimate the tropospheric delay variation relative to a given reference pixel using an InSAR SBAS approach. We compare the InSAR SBAS solution for both ground deformation and tropospheric delays with existing GPS measurements and confirm that the ground deformation signal andtropospheric noise in InSAR data are successfully separated. We observe that the coastal region on the south side of the Hilina Pali moves at a higher background rate than the region north side of the Pali. We also conclude that the 2010 SSE displacement is mainly horizontal and the maximum magnitude of the 2010 SSE vertical component is less than 5 mm.

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Additional publication details

Publication type Article
Publication Subtype Journal Article
Title The 2010 slow slip event and secular motion at Kilauea, Hawai`i inferred from TerraSAR-X InSAR data
Series title Journal of Geophysical Research B: Solid Earth
DOI 10.1002/2014JB011156
Volume 119
Issue 8
Year Published 2014
Language English
Publisher American Geophysical Union
Contributing office(s) Volcano Hazards Program, Alaska Science Center
Description 17 p.
First page 6667
Last page 6683
Country United States
State Hawaii
Other Geospatial Kilauea
Online Only (Y/N) N
Additional Online Files (Y/N) N