Euler Poles Determination of Southern Sunda Microblocks Base on GNSS GPS Observations
Sarsito D.A.a, Susiloa, Pradipta D.a, Andreas H.a
a Geodesy Research Division, Institut Teknologi Bandung, Bandung, Indonesia
Abstract
© 2018 IEEE.Determination of Current Instantaneous Euler Poles is a geodetic contribution for the geo-kinematic determination of the earth by using ideal spherical assumptions. The Euler pole parameters are estimated based on the shift or movement speed of a minimum of three GNSS-GPS stations located in the same rigid zone. By applying four geometric calculation methods (LI-Norm Minimization or Least Absolute Deviation/Error, best fitting L2-Norm Minimization, distance or/and time weighting), the stability of the estimation result given the sensitivity to the distribution pattern of GNSS GPS observation is not homogeneous in plates / blocks. The absolute residuals of the observations with the Euler polar velocity estimation results indicate the presence of the stations within or outside the rigid zone. By applying all of the mentioned steps, a stable estimation value of the Java-Sumba-South Sulawesi micro-blocks Euler poles of absolute residuals is about 2-3 mm/year, and these parameters are used as geo-kinematic information.
Author keywords
block,Distribution patterns,Estimation results,Euler poles,Geometric calculations,Kinematic information,Least absolute deviations,Velocity estimation
Indexed keywords
block,Euler pole,GNSS GPS
Funding details
Deep appreciation and many thanks to Indonesian Geospatial Information Agency (BIG) and ITB for research collaboration. And deepest gratitude for Prof. C. Vigny, Dr. W.J.F. Simons and Prof. H.Z. Abidin, who provided knowledge to the author in the “state of the art” of geodynamic study using geodetic – technology and methods. This study was partially funded by the Ministry of Research, Technology, and Higher Education of Indonesia in 2018.