Robert L. Field, Ph.D.

PRIVATE Robert L. Field received a B.S. in chemistry from the University of Denver in 1968 and an M.S. in physics from the University of New Orleans in 1976. From 1977 to 1981 he worked as a research physicist in ocean acoustics at the Naval Research Laboratory (NRL), Stennis Space Center, Mississippi. From 1981 to 1986 he worked at Gulf Oil and AMOCO on seismic propagation and signal processing problems. In 1986 he returned to NRL as a research physicist in charge of the Acoustic Transients Accelerated Research Initiative.

In 1991 Mr. Field became head of the Shallow Water Coastal Acoustics Section of NRL. Typically the section is involved in joint projects between the acoustics and oceanography divisions of NRL. The projects include acoustic and oceanographic field measurements coupled with acoustic and dynamic ocean models. In 1995 and 1996 Mr. Field was the program manager and chief scientist representing the U. S. for the Shelf Edge Studies Acoustic Measurement Experiments (SESAME). This was a joint project between the NRL, the Office of Naval Research, the Defense Evaluation Research Agency (U. K.) and the Natural Environment Research Council (U. K.). During the summers of 1995 and 1996 joint acoustic and oceanographic experiments were performed off Hebrides/Malin shelf (Northwest coast of the U. K.). During these experiments acoustic sources and multiple acoustic arrays were deployed simultaneously with supporting oceanographic equipment.

From 1999 to 2002 Mr. Field served as program manager for the U.S. of the Shallow Water Acoustic Technology (SWAT) Project. The major research topics addressed under the project were acoustic bottom interaction and acoustic propagation through a fluctuating ocean. The project was a collaborative effort between the Technical Research and Development Institute of Japan, the Office of Naval Research, the Woods Hole Oceanographic Institute, and the University of Miami. In 2000, the SWAT project conducted a major experiment with three ships and aircraft off the New Jersey coast. This experiment, like the two SESAME experiments, involved the deployment of acoustic sources and receiving arrays that operated while oceanographic measurements were underway.

Since 2001 the section has been a partner in the Littoral Acoustic Demonstration Center (LADC). This is a partnership between NRL, the University of New Orleans, the University of Southern Mississippi and the Naval Oceanographic Office. The objectives of LADC are to monitor acoustic ambient noise, marine mammal activity and acoustic levels from air gun surveys in the Gulf of Mexico using autonomous acoustic buoys.

Relevant Recent Publications:
“The overtone structure of acoustic fluctuations due to harmonic variations in sound speed (L),” R. L. Field and J. George, J. Acoust. Soc. Am., 117 (1), pp 51-54, Jan. 20005.

“Internal-Wave Energy Fluxes on the New Jersey Shelf,” Z. R. Hallock and R. L. Field, J. Phys. Oceanogr., 35, pp 3-12, Jan. 2005.

“Shoreward propagation of internal waves at the Malin Shelf edge,” Z. R. Hallock, J. Small, J. George, R. L. Field and J C. Scott, Continental Shelf Research, vol. 20, pp. 2045-2057, 2000.

“Use of higher order statistics in source signature estimation,” M. K. Broadhead, L. A. Pflug and R. L. Field, J. Acoust. Soc. Am., 107, (5), Pt. 1, pp. 2576-2585, May, 2000.

“Mode Coupling Analysis for a Resonance Effect due to an Internal Soliton”, Broadhead, M.K. and R.L. Field, Shallow-Water Acoustics, Renhe Zhang and Jixun Zhou editors, China Ocean Press, 1997.

"Sensitivity of the Deconvolution of Acoustic Transients to Environmental Mismatch," M.K. Broadhead, R.L. Field and J.H. Leclere, J. Acoust. Soc. Am., 94 (2), Pt.1, pp 994 - 1002, August, 1993.

"Measurements of Bottom-Limited Ocean Impulse Responses and Comparisons with the Time-Domain Parabolic Equation," R.L. Field and J.H. Leclere, J. Acoust. Soc. of Am., 93 (5), pp 2599-2616, May, 1993.