Satellite

Biography

Biography: Jiangbo Yu

Abstract

The Gulf Coast region includes southern U.S. states and the Gulf Coast of Mexico. Over 800 Continuous Operating Reference Stations (CORS) have been installed in the Gulf Coast region by the joint efforts of local governmental agencies, private land survey companies, and research institutes during the past two decades. In this presentation, I will introduce the current GPS geodesy infrastructure in the Gulf Coast region. The infrastructure is consisted of the CORS in the Gulf Coast region, and a newly defined Stable Gulf of Mexico Reference Frame (SGOMRF). SGOMRF is a local reference frame established for precisely delineating local ground motion associated with fault creep, salt dome uplift, and land subsidence in the Gulf Coast region. The root-mean-squares (RMS) of the velocities of 13 reference stations have achieved 0.2 mm/year in horizontal and 0.3 mm/year in vertical directions within the local reference frame. Using this GPS geodesy infrastructure, significant spatial variation of subsidence rates has been observed in both Mexico City and the Houston-Galveston area. GPS stations in southeastern Louisiana have indicated minor (< 6.0 mm/year) but consistent subsidence over time and space. SGOMRF is also critical for deriving long-term absolute seal-level changes.