GPSと魚群探知機を用いた沿岸浅海域における海底地形図の簡便作成法
書誌事項
- タイトル別名
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- A Facile Method for Mapping Bathymetric Chart at Shallow Coastal Water by Using GPS and Fish Finder
- GPS ト ギョグン タンチキ オ モチイタ エンガン センカイイキ ニ オケル カイテイ チケイズ ノ カンベン サクセイホウ
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抄録
A bathymetric chart is a basic and useful tool for any study field in ocean science, and it is generally mapped from bathymetric data by multi narrow-beam echo-sounder (MNBES). However, MNBES is still expensive and inconvenient to utlize on a small boat at shallower coastal water e.g. shallow coral reef. Meanwhile, recently accuracy is improved both in location of GPS and in depth of fish finder (single echo sounder). This paper proposes a facile method for mapping bathymetric chart at shallow coastal water by using data of GPS and fish finder. Sea trial with GPS and fish finder was carried out at shallow water in Tateyama Bay, Chiba Prefecture, and the bathymetric chart was mapped by a 3D rendering software. The obtained bathymetric chart was compared with that mapped from data of MNBES, and data amendment was examined. This method can express the shape of the object on seabed of which dimension was twice larger than the distance between the successive two sounding points. The depth data should be amended, considering time change in tidal level and boat motion due to wave generated by other ships. The sounding points are concentrated on the boat track line, and thus introduction of anisotropic friction is effective in interpolating depth data between the track lines for 3D rendering.
収録刊行物
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- 日本水産工学会誌
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日本水産工学会誌 45 (2), 93-100, 2008
日本水産工学会
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詳細情報 詳細情報について
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- CRID
- 1390001205863160448
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- NII論文ID
- 110007367518
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- NII書誌ID
- AN10278554
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- ISSN
- 21897131
- 09167617
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- NDL書誌ID
- 9747964
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- IRDB
- NDL
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可