KY15-08 Research Cruise

Representative Organization: Japan Agency for Marine-Earth Science and Technology

2015/05/02 - 2015/05/20

Off Tohoku

Research Cruise

Topographic survey will be carried out at the blank area by the SEABEAM2112 loaded on the R/V Kaiyo. ROV Hyper-Dolphin will dive off Sanriku for estimating the mass of debris, biomass of commercial species and other animals using by the stereo digital camera system, analyzing behavior and distribution pattern by the bio-tracking system, elucidating the fishery environmental dynamics by the long term monitoring system, and clarifying dissolve process of debris by collecting samples.

Topographic survey: During the cruise, two lines off Iwate, three lines off Miyagi and a line off Fukushima were topographically surveyed by SEABEAM 2112. Quantitative observation of benthic animals using by the stereo camera system: The quantitative biomass of benthic animals on the sea floor was observed by the stereo camera system loaded on the Hyper-Dolphin. Bumper debris, snow crabs with pinger for size calibration, the bacterial mat site, liponematid anemone, ophiuroids, etc, were intensively observed. Behavior and distribution patterns of commercial species recorded by the bio-tracking system: Eight bio-tracking base station were deployed off Otsuchi, 700m depth along with the deep-sea canyon. We attached the pingers to seventeen snow crabs and four Kichiji fish, and released inside the station area. In this area, we also shooted pingers with hook to Kichiji fish and succeeded to attach pingers to nine fish at the deep-sea bottom. The base stations will be recovered in March 2016 by Hyper-Dolphin. Off shore environmental dynamics measured by the long term monitoring system: Long term monitoring system deployed off Otsuchi in June 2014 was recovered and obtained data sets. After the maintenance, it was deployed again to the same site. Quantitative analysis of ophiuroids distribution on the deep-sea bottom: Quantitative amount of ophiuroids was recorded by the stereo camera system. Also, ophiuroids samples were quantitatively collected by the Ekman-birge grabber for comparing the amounts data by the still images. Diversity of meio-fauna: Total number of sixty-one sediment samples were collected by the MBARI corers for understanding the diversity of meio-fauna. Succession of the bacterial mat on the deep-sea valley off Kamaishi: Huge range of bacterial mat found at the Kamaishi Canyon in July 2014 was surveyed by observing its range and measuring by Redox and DO sensors for clarifying the process of succession.

FY2015 KY15-08 Research Cruise

KY15-08 Biological sample data
KY15-08 video
KAIYO KY15-08 Expendable Bathythermograph (XBT)
KAIYO KY15-08 Expendable Bathythermograph (XBT) Fall-rate bias corrected
KAIYO KY15-08 Bathymetry (MBES)
KAIYO KY15-08 Shipboard Acoustic Doppler Current Profiler (ADCP)
KAIYO KY15-08 Expendable Conductivity-Temperature-Depth Profiler (XCTD)
KAIYO KY15-08 Navigation data
KY15-08 HYPER-DOLPHIN HPD 01811 Submersible Conductivity-Temperature-Depth Profiler (CTD)
KY15-08 HYPER-DOLPHIN HPD 01812 Submersible Conductivity-Temperature-Depth Profiler (CTD)
KY15-08 HYPER-DOLPHIN HPD 01813 Submersible Conductivity-Temperature-Depth Profiler (CTD)
KY15-08 HYPER-DOLPHIN HPD 01814 Submersible Conductivity-Temperature-Depth Profiler (CTD)
KY15-08 HYPER-DOLPHIN HPD 01815 Submersible Conductivity-Temperature-Depth Profiler (CTD)
KY15-08 HYPER-DOLPHIN HPD 01816 Submersible Conductivity-Temperature-Depth Profiler (CTD)
KY15-08 HYPER-DOLPHIN HPD 01817 Submersible Conductivity-Temperature-Depth Profiler (CTD)
KY15-08 HYPER-DOLPHIN HPD 01818 Submersible Conductivity-Temperature-Depth Profiler (CTD)
KY15-08 HYPER-DOLPHIN HPD 01819 Submersible Conductivity-Temperature-Depth Profiler (CTD)
KY15-08 HYPER-DOLPHIN HPD 01820 Submersible Conductivity-Temperature-Depth Profiler (CTD)
KY15-08 HYPER-DOLPHIN HPD 01821 Submersible Conductivity-Temperature-Depth Profiler (CTD)
KY15-08 HYPER-DOLPHIN HPD 01822 Submersible Conductivity-Temperature-Depth Profiler (CTD)
KY15-08 HYPER-DOLPHIN HPD 01823 Submersible Conductivity-Temperature-Depth Profiler (CTD)
KY15-08 HYPER-DOLPHIN HPD 01824 Submersible Conductivity-Temperature-Depth Profiler (CTD)
KY15-08 HYPER-DOLPHIN HPD 01825 Submersible Conductivity-Temperature-Depth Profiler (CTD)