Preface 
This report was prepared by the Coastal Engineering Research Center 
(CERC) at the U.S. Army Engineer Waterways Experiment Station (WES) 
and is a product of the Los Angeles and Long Beach Harbors Model 
Enhancement (HME) Program. The HME Program has been conducted 
jointly by the Ports of Los Angeles and Long Beach (LA/LB); the U.S. Army 
Engineer District, Los Angeles (SPL); and WES. The purpose of the HME 
Program has been to provide state-of-the-art engineering tools to aid in port 
development. In response to the expansion of oceanborne world commerce, 
the Ports of LA/LB are conducting planning studies for harbor development in 
coordination with SPL. Ports are a natural resource, and enhanced port 
capacity is vital to the Nation’s economic well-being. In a feasibility study 
being conducted by SPL, the Ports of LA/LB are proposing a well-defined 
and necessary expansion to accommodate needs predicted for the near future. 
The Corps of Engineers will be charged with responsibility for providing 
deeper channels and determining effects of this construction on the local 
environment. This includes changes in harbor resonance caused by expansion 
and channel deepening. 
The investigation was conducted during the period January 1990 through 
September 1991 by personnel of the Wave Processes Branch (WPB), Wave 
Dynamics Division (WDD), and the Research Division (RD), CERC. WPB 
was included in the study by Mr. William C. Seabergh, under the direct 
supervision of Mr. Douglas Outlaw, former Chief, WPB, and Mr. Dennis G. 
Markle, current Chief, WPB, and Mr. C. E. Chatham, Chief, WDD. RD 
personnel involved in the study were Dr. S. Rao Vemulakonda and Mr. David 
J. Mark, under the direct supervision of Dr. Martin C. Miller, Chief, Coastal 
Oceanography Branch, and Ms. Lucia W. Chou, under the direct supervision 
of Mr. Bruce A. Ebersole, Chief, Coastal Processes Branch. Mr. H. Lee 
Butler was Chief, RD. Mr. Seabergh and Dr. Vemulakonda, with the 
assistance of Mr. Mark and Ms. Chou, prepared the report. Ms. Debbie 
Fulcher, WPB, assisted in preparation of the final report. Overall CERC 
management of the HME Program was furnished by Messrs. Outlaw and 
Seabergh, and this study was conducted under the general supervision of 
Dr. James R. Houston, Director, CERC, and Mr. Charles C. Calhoun, Jr., 
Assistant Director, CERC. 
