Characteristics of moored ship oscillations due to long-period waves

Ken Ichi Uzaki; Nobuhiro Matsunaga; Yasuhiro Nishii; Yoshito Ikehata; Yasuharu Kishira

doi:10.1142/9789812709554_0107

Characteristics of moored ship oscillations due to long-period waves

Ken Ichi Uzaki, Nobuhiro Matsunaga, Yasuhiro Nishii, Yoshito Ikehata, Yasuharu Kishira

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

In the Port of Shibushi in Japan, problems arise due to long-period oscillations of moored ships when there is a typhoon located far offshore. To investigate the detailed processes of these oscillations and develop effective countermeasures, image processing, wave observations and numerical simulations were conducted. The image processing results showed obvious surging motions of large cargo vessels with a period of about 60-70 s. The results of wave observations showed the existence of waves with long periods of 60-70 s. Numerical simulations revealed that such long-period waves were generated when the peak period of incident waves was set to 120 s as observed. These findings show that small-scaled harbor oscillations occur inside the port.

Original language	English
Title of host publication	Proceedings of the 30th International Conference on Coastal Engineering 2006, ICCE 2006
Publisher	American Society of Civil Engineers (ASCE)
Pages	1260-1269
Number of pages	10
ISBN (Print)	9789812706362
DOIs	https://doi.org/10.1142/9789812709554_0107
Publication status	Published - 2007
Event	30th International Conference on Coastal Engineering, ICCE 2006 - San Diego, CA, United States Duration: Sept 3 2006 → Sept 8 2006

Publication series

Name	Proceedings of the Coastal Engineering Conference
ISSN (Print)	0161-3782

Other

Other	30th International Conference on Coastal Engineering, ICCE 2006
Country/Territory	United States
City	San Diego, CA
Period	9/3/06 → 9/8/06

All Science Journal Classification (ASJC) codes

Civil and Structural Engineering
Ocean Engineering
Oceanography

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10.1142/9789812709554_0107

Cite this

Uzaki, K. I., Matsunaga, N., Nishii, Y., Ikehata, Y., & Kishira, Y. (2007). Characteristics of moored ship oscillations due to long-period waves. In Proceedings of the 30th International Conference on Coastal Engineering 2006, ICCE 2006 (pp. 1260-1269). (Proceedings of the Coastal Engineering Conference). American Society of Civil Engineers (ASCE). https://doi.org/10.1142/9789812709554_0107

Characteristics of moored ship oscillations due to long-period waves. / Uzaki, Ken Ichi; Matsunaga, Nobuhiro; Nishii, Yasuhiro et al.

Proceedings of the 30th International Conference on Coastal Engineering 2006, ICCE 2006. American Society of Civil Engineers (ASCE), 2007. p. 1260-1269 (Proceedings of the Coastal Engineering Conference).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Uzaki, KI, Matsunaga, N, Nishii, Y, Ikehata, Y & Kishira, Y 2007, Characteristics of moored ship oscillations due to long-period waves. in Proceedings of the 30th International Conference on Coastal Engineering 2006, ICCE 2006. Proceedings of the Coastal Engineering Conference, American Society of Civil Engineers (ASCE), pp. 1260-1269, 30th International Conference on Coastal Engineering, ICCE 2006, San Diego, CA, United States, 9/3/06. https://doi.org/10.1142/9789812709554_0107

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abstract = "In the Port of Shibushi in Japan, problems arise due to long-period oscillations of moored ships when there is a typhoon located far offshore. To investigate the detailed processes of these oscillations and develop effective countermeasures, image processing, wave observations and numerical simulations were conducted. The image processing results showed obvious surging motions of large cargo vessels with a period of about 60-70 s. The results of wave observations showed the existence of waves with long periods of 60-70 s. Numerical simulations revealed that such long-period waves were generated when the peak period of incident waves was set to 120 s as observed. These findings show that small-scaled harbor oscillations occur inside the port.",

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AU - Uzaki, Ken Ichi

AU - Matsunaga, Nobuhiro

AU - Nishii, Yasuhiro

AU - Ikehata, Yoshito

AU - Kishira, Yasuharu

PY - 2007

Y1 - 2007

N2 - In the Port of Shibushi in Japan, problems arise due to long-period oscillations of moored ships when there is a typhoon located far offshore. To investigate the detailed processes of these oscillations and develop effective countermeasures, image processing, wave observations and numerical simulations were conducted. The image processing results showed obvious surging motions of large cargo vessels with a period of about 60-70 s. The results of wave observations showed the existence of waves with long periods of 60-70 s. Numerical simulations revealed that such long-period waves were generated when the peak period of incident waves was set to 120 s as observed. These findings show that small-scaled harbor oscillations occur inside the port.

AB - In the Port of Shibushi in Japan, problems arise due to long-period oscillations of moored ships when there is a typhoon located far offshore. To investigate the detailed processes of these oscillations and develop effective countermeasures, image processing, wave observations and numerical simulations were conducted. The image processing results showed obvious surging motions of large cargo vessels with a period of about 60-70 s. The results of wave observations showed the existence of waves with long periods of 60-70 s. Numerical simulations revealed that such long-period waves were generated when the peak period of incident waves was set to 120 s as observed. These findings show that small-scaled harbor oscillations occur inside the port.

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Characteristics of moored ship oscillations due to long-period waves

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