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Water Level Determination for Transportation Projects. Final rept. Feb 02-Jul 02.
| 题名： | Water Level Determination for Transportation Projects. Final rept. Feb 02-Jul 02. |
| 作者： | Greenfeld-J. |
| 关键词： | *Water-level; *Transportation-sector.;Construction-; Procedures-; Safety-; Tides-; Data-collection; Waterways-; New-Jersey. |
| 摘要： | objective of this manual is to establish a uniform NJDOT procedure for determining water level as applied to safety, construction projects and bridge clearance determination in tidal areas. Chapter 1 is an introduction to the manual and to the issues regarding New Jersey Department of Transportation activities in areas subject to tides. Chapter 2 provides a brief discussion on the phenomena of tides. Chapter 3 discusses the various vertical and tidal datums used to establish benchmark elevations. The discussion of datums includes the physical aspects of datums and the mathematical relationships between these datums. Chapter 4 provides information on legal aspects of mean high water (MHW) and its relevance to New Jersey Department of Transportation activities. Data sources such as tidal control station locations, different water levels (e.g. high, low, mean etc.) at these tidal control stations, tidal benchmark elevations and tide predictions are discussed in chapter 5. A brief description of typical equipment used to conduct water level studies is given in chapter 5 as well. Chapter 6 provides a general explanation of methods for determining the MHW at a project site. It includes approximate methods for determining the MHW and methods based actual field observations. The three recommended MHW study methods, the height difference method, the range ration method and the amplitude ratio method are then described in detail in chapters 7,8, and 9, respectively. The manual also includes a list of tidal control stations in New Jersey with hyperlinks to the National Ocean Service (NOS) and the National Geodetic Survey (NGS) databases. |
| 报告类型： | 科技报告 |
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