September 18, 2008
Japan Agency for Marine-Earth Science and Technology
Japan Agency for Marine-Earth Science and Technology (JAMSTEC: Yasuhiro Kato, President) would like to announce that the Indian Ocean m-TRITON Buoy (*)drifting since July 20 this year has been recovered by JAMSTEC’s Research Vessel Yokosuka at the area of 1,000km west off of its deployed position.
The wire rope was snapped around at 55m below the sea surface.
All of underwater sensors installed to the wire down to the snapped point and meteorological sensors installed on the buoy are recovered. Unfortunately, all meteorological sensors are damaged.
It is supposed that this was a human-caused incident since a sharp score was found on the insulation of the wire rope. The bare wire around at that position was exposed to sea water and eventually got rusty and snapped.
Immediately after the recovery of m-TRITON Buoy, we reported to the Japan Coast Guard that no more warning is needed to other ships about risk of collision or interference of their route.
*Indian Ocean m-TRITON Buoy
m-TRITON Buoy is the oceanographic observation buoy system, which is capable of deep ocean mooring, developed by JAMSTEC for the Tropical Indian Ocean under the MEXT’s “Promotion plan of global observation system”.
Fig.1: Indian Ocean m-TRITON Buoy
Fig.2: TRITON Array
Pic.1: Damaged meteorological sensors (upper: vane anemometer (missing), right: thermohygrometer, left: ombrometer)
Pic.2: Snapped part of the wire rope