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|Title:||Near-real-time coastal monitoring|
|Authors:||Sabol, Margaret A.|
|Publisher:||Coastal and Hydraulics Laboratory (U.S.)|
Engineer Research and Development Center (U.S.)
|Series/Report no.:||Coastal engineering technical note ; CETN-VI-30.|
Purpose: The objective of this Coastal Engineering Technical Note is to describe the Near-Real-Time (NRT) coastal data acquisition and processing capabilities that have been developed by the Prototype Measurement and Analysis Branch (PMAB) of the Coastal and Hydraulics Laboratory. These capabilities aid in data quality control and provide internally recorded and NRT wave, water-level, and current data products to Corps of Engineers (CE) sponsors. CE open-coast, inlet, and harbor projects utilize the Prototype Measurement Analysis System (PMAS) for monitoring in support of design and operational engineering tasks. PMAS consists of coastal oceanographic sensors and instrumentation, communication equipment, and a relational database management system (McKinney and Howell 1996). Figure 1 is a schematic representation of PMAS. In the figure, solid lines represent NRT data access. The term “sensors” may refer to NRT directional wave gauges (DWG-1s) (Howell 1992, 1993) or single pressure sensors. The term “RTU” refers to a Remote Transmission Unit, which consists of the following: (A.) An all-weather, protective housing. (B.) Cable connections linking an RTU to sensors for transferring data into the RTU. (C.) Data storage hardware and software; and telecommunication hardware and software. (D.) Transferring data out of the RTU (via radio or telephone line). The Automated Real Time Tidal Elevation System (ARTTES) provides offshore water level information to survey vessels and dredges using direct measurements coupled to a predictor-corrector processing program (Lillycrop et al. 1991). The dashed lines going to NOAA/NDBC (National Oceanographic and Atmospheric Administration/National Data Buoy Center) and DWG-1s indicate that data are received and inserted into PMAS but not in NRT mode. Data from NOAA/NDBC are received monthly. Data from internal recording DWG-1s may be collected quarterly to yearly, depending on the requirements of the project. This technical note will summarize the NRT data products and how PMAS is used to provide them.
|Appears in Collections:||Technical Note - Section VI Miscellaneous Subjects|