Surface Deformation in the Northern Gulf of Mexico

We are using innovative remote sensing (Lidar, TLS) and geodetic (GPS, InSAR and radar altimetry) techniques to monitor fault activities, sea level rise and subsidence in Northern Gulf of Mexico. Using Lidar, we have mapped hundreds of faults in Houston and surrounding areas. Using ground penetrating radar (GPR), shallow seismic, and gravity data we are imaging major faults in the subsurface to understand driving mechanism for surface deformation in this region. Groundwater withdrawal is attributed to be the main cause of subsidence in the Houston area. Our observations suggest contribution by salt diapirism in the subsurface and to the surface deformation in southeast Texas (Khan et al., 2014).

Sources of Funding

National Science Foundation

ArcGIS Web Map for this project.

References and Publications

Khan, S. D., Huang, Z., Karacay, A., 2014. Study of ground subsidence in northwest Harris county using GPS, LiDAR, and InSAR techniques. Natural hazard, 73:1143-1173. DOI 10.1007/s11069-014-1067-x.

Khan, S. D., Stewart, R., Otoum, M., Chang, L., 2013. A geophysical investigation of the active Hockley Fault system near Houston, Texas. Geophysics, in press.

Engelkemeir, R., Khan, S. D., Burke, K., 2010. Surface Deformation in Houston, Texas using GPS. Tectonophysics, 490(1-2), 47-54.

Engelkemeir R., and Khan S. D., 2008. LiDAR Mapping of Faults in Houston, Texas, USA. Geosphere, 4(1), 170-182.

Engelkemeir R., and Khan S. D., 2007. Near Surface Geophysical Studies of Houston Faults. The Leading Edge, 26 (8), 1004-1008.