Detecting submarine groundwater discharge with synoptic surveys of sediment resistivity, radium, and salinity

Authors

John A. Breier, The University of Texas Rio Grande ValleyFollow
Crystaline F. Breier, University of Texas at Austin
Henrietta Edmonds, University of Texas at Austin

Document Type

Article

Publication Date

12-13-2005

Abstract

A synoptic geophysical and geochemical survey was used to investigate the occurrence and spatial distribution of submarine discharges of water to upper Nueces Bay, Texas. The 17 km survey incorporated continuous resistivity profiling; measurements of surface water salinity, temperature, and dissolved oxygen; and point measurements of dissolved Ra isotopes. The survey revealed areas of interleaving, vertical fingers of high and low conductivity extending up through 7 m of bay bottom sediments into the surface water, located within 100 m of surface salinity and dissolved Ra maxima along with peaks in water temperature and lows in dissolved oxygen. These results indicate either brackish submarine groundwater discharge or the leakage of oil field brine from submerged petroleum pipelines.

Comments

© 2005, American Geophysical Union. Original published version available at https://doi.org/10.1029/2005GL024639

Recommended Citation

Breier, J. A., C. F. Breier, and H. N. Edmonds. 2005. “Detecting Submarine Groundwater Discharge with Synoptic Surveys of Sediment Resistivity, Radium, and Salinity.” Geophysical Research Letters 32 (23). https://doi.org/10.1029/2005GL024639.

Publication Title

Geophysical Research Letters

DOI

10.1029/ 2005GL024639