NRL Geophysicist Awarded NDIA Undersea Warfare Bronze Medal Achievement in Science > United States Navy > News Tales

This award-winning work wouldn’t have been attainable with out implausible teamwork, particularly from the workers in Geology and Geophysics and Acoustic Simulation, Measurements & Ways Branches,” mentioned Wooden. “Primarily a software program framework, our International Predictive Seabed Mannequin, or GPSM, additionally supplies a method of bringing collectively a broad spectrum of environmental and acoustic specialists. The analysis will not be full, and we’re pushing ahead to repeatedly improve our environmental information benefit.”

Wooden has a 30-year profession at NRL over which he spearheaded new approaches in seafloor sciences with distinctive technical contributions within the space of seabed properties of absorption and scattering affecting acoustic propagation for anti-submarine and mine warfare missions. 

Under the ocean floor, soundwaves are essentially the most sensible technique of sensing your environment or seeing. The soundwaves are bent, mirrored, and absorbed to various levels by the naturally occurring variations in acoustic properties each all through the ocean in addition to a whole lot of meters into the seabed. These environmental variations create complicated and altering 3-D patterns of clear and obscured acoustic visibility, and controls how uncovered or hidden the U.S. Navy, or adversaries could be at any given time and site.

“NRL’s GPSM predicts seabed geology the place it was in a roundabout way noticed for the Navy to calculate or predict these complicated patterns of sound interplay within the marine atmosphere, and in so doing give tactical benefit to our warfighters,” Wooden mentioned.

By making use of machine studying methods, Wooden demonstrated estimation of sea backside properties, together with: estimates of chilly water seeps and expulsions from the ocean ground, biogenic methane manufacturing in marine sediments, sea ground slope instabilities from international to native scales, and sediment accumulation charges all through the oceans. 

“Dr. Wooden delivers important new technical developments to estimating sea backside materials composition and roughness properties that are actually being included into tactical utility for the Navy, similar to GPSM,” mentioned Gregg Jacobs, Ph.D., NRL Ocean Dynamics and Prediction department head. “His work consists of collaborations with business to acquire specialised acoustic survey knowledge, academia to develop and entrain new machine studying methods, and throughout Navy organizations to supply technical resolution to elementary issues in operational acoustic purposes.”

All of that are contributing bodily properties affecting acoustic vitality propagating via the ocean and the ocean ground. The numerous technical achievement within the final yr has been the implementation of a brand new illustration of seafloor properties inside operational acoustic propagation fashions used all through the U.S. Navy. 

The brand new illustration is contained within the GPSM, which supplies drastically superior illustration of results resulting from backside absorption, refraction, reflection, and scattering in ocean acoustic issues.  The work has been revealed in peer-reviewed journals demonstrating the novelty of the work in addition to the rigorous acceptance within the essential science assessment course of. 

Many geoacoustic parameters are influenced by marine sediment density; nevertheless, a lot of the seafloor as been unexplored, leaving massive geospatial gaps. From present samples, the methods relate all kinds of noticed parameters to acoustic properties. Wooden’s work applies these relations to different areas of the seafloor that haven’t been totally sampled. 

The ensuing seafloor properties throughout the globe have been linked to acoustic propagation fashions.  Correct acoustic interplay with the ocean backside has been demonstrated throughout the final yr, Jacobs mentioned. “The info units are actually being built-in into the Ocean / Ambiance Grasp Library overseen by the Commander Naval Meteorology and Oceanography Command to just accept the brand new international datasets for operational use in tactical choice aids throughout the fleet.”

In conducting this work, Wooden has mentored a staff of researchers together with postdocs and college students within the elementary science and making use of the science to many geophysical issues.  These technical accomplishments have established Wooden as a acknowledged chief within the science group contributing to the undersea warfare expertise.

The current technical accomplishments included into GPSM are a end result of many years of analysis and technological development led by Wooden.  The brand new mannequin of seafloor properties has a excessive impression within the space of undersea warfare. His experience is sought out for geophysics issues involving primary science and expertise to implementation into operational programs.

Wooden continues to guide the fundamental analysis and mentors a powerful science staff via collaborations with educational establishments internationally, industrial pursuits, and operators all through the U.S. Navy. 


Concerning the U.S. Naval Analysis Laboratory

NRL is a scientific and engineering command devoted to analysis that drives modern advances for the U.S. Navy and Marine Corps from the seafloor to house and within the data area. NRL is positioned in Washington, D.C. with main area websites in Stennis Area Middle, Mississippi; Key West, Florida; Monterey, California, and employs roughly 3,000 civilian scientists, engineers and help personnel.


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