AIS DATA ANALYSIS ON SHIPS TRANSPORTED BY THE 2011 TOHOKU TSUNAMI AND DAMAGE TO PORT FACILITIES BY THE SHIPS
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- MATSUDA Nobuhiko
- TOA CORPORATION
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- TOMITA Takashi
- Port and Airport Research Institute
Bibliographic Information
- Other Title
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- AISを用いた津波漂流船舶の挙動と衝突被害分析
- AIS用いた津波漂流船舶の挙動と衝突被害分析
- AIS モチイタ ツナミ ヒョウリュウ センパク ノ キョドウ ト ショウトツ ヒガイ ブンセキ
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Abstract
The AIS (Automatic Identification System) data on ships in Kashima Port was analyzed to investigate movement characteristics of the ships transported by the 2011 Tohoku tsunami and their collision damage to port facilities. The main results are as follows: 1) Bigger ships can cause damage to the facilities many times even if longer time passed from the earthquake occurrence. 2) In the most inner part of the channel-shaped port, water particle velocity which could be reduced by the reflected tsunami shortened the length of ship's movement by the tsunami and reduced ship's speed when colliding with a port facility, resulting in reduction of severe collision damage to the facility. 3) Significant drift movement was observed even in a channel-shaped port with oblique, transverse and rotational motions, owing to complex tsunami flow and various ship maneuvering.
Journal
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- Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering)
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Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering) 71 (2), I_1657-I_1662, 2015
Japan Society of Civil Engineers