Los Angeles and Long Beach Harbors Model Enhancement Program: Prototype Wave Data Summary
Abstract
This report presents data products from the analysis of seven different wave gauges in Los Angeles and Long Beach Harbors and a directional wave gauge at a nearby offshore site (Platform Edith). These data products were chosen in an effort to summarize all wave data collected during the Harbors Model Enhancements (HME) Program. Data acquisition methods and equipment are documented in this report, along with analysis methods. The emphasis of this report is on summarizing and documenting the available prototype wave data in fulfillment of the wave data collection and analysis tasks of the HME. Between February 1984 and February 1988 wave data were sampled every 2 hr at 1 Hz for 2,048 sec in the harbors. From February 1988 to August 1991, data were collected continuously in the harbors at an average sample rate of 0.25 Hz. Directional wave data were measured offshore at Platform Edith via a PUV gauge between February 1985 and August 1991. Data for this period were collected at 1 Hz for 2,048 sec every hour but reported every 4 hrs. Waves were measured in seven locations in the harbors with highly accurate single-point pressure sensors. Directional wave measurements show that during the winter months most of the waves come from the west, but during the summer, the majority of the waves come from the south (although a significant number still come from the west) and average peak in wind wave energy during the months of September and October. However, low-frequency waves that affect ship motion are present throughout the year.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 01, 1998
- Accession Number
- ADA351632
Entities
People
- James P. Mckinney
- James Rosati Iii
- Paul T. Puckette