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原文传递 Wave Modeling for Jetty Rehabilitation at the Mouth of the Columbia River, Washington/Oregon, USA.

题名：	Wave Modeling for Jetty Rehabilitation at the Mouth of the Columbia River, Washington/Oregon, USA.
作者：	demirbilek, z. lin, l. nwogu, o. g.
关键词：	navigation, rehabilitation, columbia river, waves, oregon, models, channels(waterways)
摘要：	The U.S. Army Engineer District, Portland (NWP), maintains three rubble-mound jetties at the Mouth of the Columbia River (MCR) in support of the Federal navigation project. The north and south entrance jetties constrain the current to scour the navigation channel, stabilize the location of the channel and entrance, and provide wave protection to vessels transiting the MCR. A third jetty (Jetty A) inside the MCR serves primarily as a training structure for the navigation channel to direct the flow away from the foundation of the north jetty. The jetties have significantly degraded during the past several decades. A maintenance plan is being developed to manage the jetties at the MCR to best support the Federal navigation project. / NOTE: Technical rept. / Supplementary Notes: The original document contains color images. / Availability Note: Order this product from NTIS by: phone at 1-800-553-NTIS (U.S. customers); (703)605-6000 (other countries); fax at (703)605-6900; and email at orders@ntis.gov. NTIS is located at 5285 Port Royal Road, Springfield, VA, 22161, USA.
总页数：	u0820；142p
报告类型：	科技报告