Cruise Report

NT13-16

Prized Cruise for the 15th Hagaki Contest

Toyama Bay

July 28, 2013 - July 31, 2013

Japan Agency for Marine-Earth Science and Technology

(JAMSTEC)

●Contents

1. Cruise Information

2. Researchers

3. Cruise Summary

4. Hyper-dolphin dive surveys

4.1 Observation equipments

4.2 Dive information

Appendix: Picture report of Prized Cruise for the15th Hagaki Contest in Toyama bay

1. Cruise Information ● Cruise ID: NT13-16

● Name of vessel: NATSUSHIMA

● Title of the cruise: Prized Cruise for the 15th Hagaki Contest

● Title of the proposal: Prized Cruise for the 15th Hagaki Contest

● Cruise period: July 28, 2013 – July 31, 2013

Boarding experiment: July 29 –July 31

● Ports of call: Toyama New Port

● Research area: Toyama Bay

● Research Map

July 29 : 36°53.03'N, 137°10.03'E, Depth 822m

July 30 : 36°52.91'N, 137°10.70'E, Depth 827m

July 29 & 31

July 30

Toyama New Port

July 31 : 35°53.05'N, 137°10.00'E, Depth 820m

2. Researchers ● Chief scientist: Kyohiko Mitsuzawa [JAMSTEC]

● Representative of the Science Party: Kyohiko Mitsuzawa [JAMSTEC]

● List of cruise members

-Passengers

July 29

Sakurako Yoshida, Kenji Yoshida

Reiya Nikaido, Susumu Nikaido

Toyoshige Aoyama, Masaki Aoyama

Takumi Suematsu, Kouji Suematsu

Masahito Nakano, Norihito Nakano

Ayane Nakada, Masaru Nakada

Nana Hatanaka, Wataru Hatanaka

July 30

Mika Sekiguchi, Megumi Sekiguchi

Ami Suenaga, Tae Suenaga

Ayano Horie, Yuka Horie

Soraki Yamazaki, ShujiYamazaki

July 31

Ryuki Nemoto, Miyuki Nemoto

Shunya Suzuki, Toshiko Suzuki

Chisato Nakaji, Naoki Nakaji

Takaya Doi, Yoshihiro Doi

-Press-

July 30

Shou Imai [Asahi Gakuseishimbunsha]

-Science Party

Shinji Tsuchida [JAMSTEC]

Takayuki Yogi [MWJ]

Shoko Matsuda [MWJ]

-Staffs

Yoshio Isozaki [JAMSTEC]

Nobuo Tomoda [JAMSTEC]

Yoshiyuki Ogita [JAMSTEC]

Yuko Suda [JAMSTEC]

Kazue Hisamatsu [JAMSTEC]

Mirei Yamamoto [JAMSTEC]

Mitsuba Takahashi [Kyoritsu Kanzai]

3. Cruise summary In order that children and their parents shall have a better understanding of and deeper interests

in the oceans, JAMSTEC provided a single-day boarding experiment on R/V NATSUSHIMA to

children who won prizes in the 15th Hagaki contest and their parents.

Boarding experiment carried out in order all the three days including the operation of R/V

NATSUSHIMA and ROV HYPER-DOLPHIN. While HYPER-DOLPHIN’s dives, several kind of

deep-sea organisms such as Chionoecetes japonicus and Megalodicopia hians were observed

through the high-definition RV camera. At the deep seafloor, HYPER-DOLPHIN did some

experiments which were proposed by children. For example, HYPER-DOLPHIN fished with

special rod and mackerel for the question “is it possible to fish at the bottom of ocean?”.

HYPER-DOLPHIN also carried polystyrene foams, ping-pong balls, cans of Coke, watermelon and

other materials to the deep ocean for the question “how does water pressure affect the materials?”.

After the experiment, participants had opportunities to control HYPER-DOLPHIN from the control

room on the ship as well. On the return way to port, they also had opportunities to operate

NATSUSHIMA (see APPENDIX).

4. HYPER-DOLPHIN dive surveys

4.1 Observation equipments

-suction sampler, multiple canister, binocular, microscope, cooler for aquaria, container, bait trap

4.2 Dive information

#1556 July 29, 2013 Maximum depth: 835m

-Observed organisms

Amphipoda, Holothuroidea, Ophiuroidea, Crossaster papposus, Eualus biunguis, etc.

-Experiments

carried materials to see how water pressure affect them; pressure sheets, small lights, raw and

boiled eggs, a ping-pong ball, a bottle of water, a bottle of Coke, a balloon, polystyrene

foams, a ruler, a small water melon, candies, radishes.

put lumps of chicken, mackerels, and bananas on the sea floor.

set a bait trap and a memorial plate on the sea floor.

try to collect iron sand using U-shaped magnet.

collected ocean mud with MBARI.

collect deep sea water using Niskin water sampling bottle.

#1557 July 30, 2013 Maximum depth: 828m

-Observed organisms

Anthozoa, Megalodicopia hians, Eualus biunguis, Amphipoda etc.

-Experiment

carried materials to see how water pressure affect them; pressure sheets, small lights, raw and

boiled eggs, a ping-pong ball, a bottle of water, a bottle of Coke, a balloon, polystyrene

foams, a ruler, a small water melon, candies, radishes, sunflower seeds.

set a memorial plate on the sea floor.

try to collect iron sand using U-shaped magnet.

try fishing using special rod

put lumps of chicken, mackerels, and bananas on the sea floor.

get organisms using suction sampler.

collected ocean mud with MBARI.

collect deep sea water using Niskin water sampling bottle.

#1558 July 31, 2013 Maximum: 833m

-Observed organisms

Zoarcidae, Amphipoda, Ctenodiscus crispatus, Liparis tessellatus, Eualus biunguis, etc.

-Experiment

carried materials to see how water pressure affect them; pressure sheets, small lights, raw and

boiled eggs, a ping-pong ball, a bottle of water, a bottle of Coke, a balloon, , polystyrene

foams, a ruler, a small water melon, candies, radishes.

set a memorial plate on the sea floor.

try to collect iron sand using U-shaped magnet.

try fishing using special rod

put lumps of chicken, mackerels, and bananas on the sea floor.

get organisms using suction sampler.

collected ocean mud with MBARI.

collect deep sea water using Niskin water sampling bottle

-Picture of several collected samples

Collected sample; Megalodicopia hians

Collected sample; Zoarcidae (left) and Liparis tessellatus (Right)

-Conclusion

It was heavy rain in the early morning of first day, but Ocean condition was basically okay. Nobody

got seasick through all cruise. The children and parents were warmly welcomed to NATSUSHIMA and

seemed having fun. We believe that our goal “Having children better understanding of and deeper

interests in the oceans” is successfully achieved.

Appendix

Picture report of Prized Cruise for the 15th Hagaki Contest in Toyama bay ■Daily schedule■

08:00

On board R/V NATSUSHIMA.

08:10

Welcome message from Captain.

08:30

Security guidance by ship crew and

research lecture by scientist.

09:00

Departure.

10 :00

Research area arrival.

Tour of the ROV Hyper Dolphin.

10:40

Diving operation start.

11 :30

Experience of pilot.

12 :40

Lunch time.

13 :40

Observations and experiments in the

deep sea.

14:30

Return to surface.

15:00

Operation experiment of R/V

NATSUSHIMA.

15:30

Observation.

Touching samples such as deep sea

mud.

Check the size of Polystyrene foam,

before and after diving operation.

Check samples such as raw eggs,

watermelon, etc.

16:00

Lecture of samples and data treatment.

16:30

Boarding certification cards from

Captain.

16:50

Group photo.

Farewell.

■Observation and collected deep sea organisms■

Sea Anemone

Squid

Chionoecetes japonicus

Cubed snailfish

Liparis tessellatus

Megalodicopia hians

■Deep sea experiments proposed by participants■ Before the dive After the dive

Rubber balloon

Pressure experiments.

Carbonated beverage bottle, cans, baseball, raw egg,

boiled egg, flower, tofu, etc.

Polystyrene foams

Check the best bite.

Mackerel, banana or chicken.

Try to get iron sand using U-shaped

magnet.

Try fishing at deep sea floor.

Deployed name plates as memories of

observation.