博士 / 國立臺灣海洋大學 / 海洋環境資訊系 / 102 / The Coast Guard in Taiwan responds to about 500 calls each year, and over 50% of the search and rescue missions involved person in water (PIW). The drift of PIW at sea without propulsion is affected by ocean currents, wave and wind actions. Therefore, having timely, reliable and accurate environment information, particularly surface current is important to locate a drifting target. The Taiwan Coast Guard used to rely in part on the historical statistical current data provided by the Ocean Data Bank of the National Science Council (now Ministry of Science and Technology). These data were obtained by Shipboard Acoustic Doppler Current Profilers (Sb-ADCP). In 2011, the Coast Guard started to systematically deploy Datum Marker Buoys (DMB) to collect surface current information and to aid search and rescue missions. This study describes the surface current collected by Taiwan Coast Guard’s Datum Marker Buoy (DMB) and presents case studies which incorporate DMB to the search missions.
This study found that DMB data did have positive effects on search and rescue missions, particularly for the near shore cases. This is because that ship board ADCP did not have current data for the near shore area. In addition, according to the Coast Guard’s evaluations, during the years of 2011-2013, when DMBs were deployed in the search and rescue missions, there was an increase in rescue success rate. The finding showed that DMB did offer useful information on near shore currents to help search planner to set up a satisfactory search area. We also found that deploying real-time DMBs by the search units at the scene is also effective in finding the search target.
It is important to continue the collection of surface current information and acquisition of real-time current at the search and rescue scene. For the long term, there is a need to integrate several data such as our DMB data system, information collected by aforementioned ship board ADCP data, and surface current information collected by the Coastal Ocean Dynamics Application Radar (CODAR) system set-up by the Taiwan Ocean Research Institute. The aim is to build up a comprehensive ocean Environmental Data System (EDS) to aid search and rescue missions at sea.
| Identifer | oai:union.ndltd.org:TW/102NTOU5276018 |
| Date | January 2014 |
| Creators | Yao, Chou-Tien, 姚洲典 |
| Contributors | 蔡政翰 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 111 |
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