Feasibility on Infrared Detection of Cetaceans for Avoiding Collision with Hydrofoil

• Autorzy: Yonehara, Y. , Kagami, L. , Yamada, H. , Kato, H. , Terada, M. , Okada, S.
• Języki publikacji: EN

Abstrakty

EN

To achieve safer navigation without sudden collisions with large cetaceans at high speed boats such as the hydrofoil, we examined its feasibility of an installation of the infrared camera. Because any ceta-ceans are of air-breathing animals, it is theoretically expected that they can be potentially detected through imaging of the infrared cameras. Thus, we examined the feasibility of detection with aiming at sperm whales in waters off Chichijima Islands (27°4'N, 142°13'E), Japan. Through the experiment, it was revealed that sperm whales could be detected stably within 200m, and detectable cue were blow, back body and fluke tails. However, boats and waves were also detected as noise images. Especially, waves greatly resemble the whale back bodies. Although potential of the infrared camera was confirmed, there are still necessities of further ex-periments including ones conducting at different temperate waters, to successfully install the infrared camera for earlier finding of large cetaceans.

Słowa kluczowe

EN

Hydrofoils; collision avoidance; infrared detection; safety at sea

• Czasopismo: TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
• Rocznik: 2012
• Tom: Vol. 6, no. 1
• Strony: 149--154
• Opis fizyczny: Bibliogr. 4 poz., rys., tab.

Twórcy

autor

Yonehara, Y.

• Tokyo University of Marine Science and Technology, Tokyo, Japan

autor

Kagami, L.

• Tokyo University of Marine Science and Technology, Tokyo, Japan

autor

Yamada, H.

• Tokyo University of Marine Science and Technology, Tokyo, Japan

autor

Kato, H.

• Tokyo University of Marine Science and Technology, Tokyo, Japan

autor

Terada, M.

• KHI JPS Co., Ltd., Kobe, Japan

autor

Okada, S.

• KHI JPS Co., Ltd., Kobe, Japan

Bibliografia

• [1] Barber, D. G., Richard, P. R., Hochheim, K. P., Orr J. 1991. Calibration of aerial thermal infrared imagery for walrus population assessment. Arctic, 44, 58-65.
• [2] Cuyler, L. C., Wiolsrod, R., Oritsland, N. A. 1992. Thermal infrared radiation from free living whales. Marine Mammal Science, 8(2): 120-134.
• [3] McCafferty, D. J. 2007. The value of infrared thermography for research on mammals: previous applications and future direction. Mammal Rev. 2007, Volume 37, No. 3, 207-233.
• [4] Shakata, K., Odagawa, A., Yamada, H., Matsunaga, H., Kato, H. 2008. Toward to avoiding ship strike of cetaceans with the high-speed HF (1) Identifying expected cetacean species on the track lines of HF. 2008 Annual meeting of M. S. J. summary: 135