KH-18-J03C cruise:Researches on marine ecosystem dynamics in the Tsunami affected area off Sanriku

Fiscal Year

2018

Title

KH-18-J03C cruise:Researches on marine ecosystem dynamics in the Tsunami affected area off Sanriku

Project and Theme

Project 3. Research on factors controlling open ocean benthopelagic ecosystem dynamics
Representative Organization: Japan Agency for Marine-Earth Science and Technology
Research on factors controlling open ocean benthopelagic ecosystem dynamics
Representative personYoshihiro Fujiwara
OrganizationJapan Agency for Marine-Earth Science and Technology
DepartmentEastern Japan Marine Ecosystems Dynamics Project team

Research Information

Period and Interval
2018/08/21 - 2018/08/30
Research Area
Off Sanriku
0334_R01_01.png, 0334_R01_02.png
Category
Mooring system(Observation buoy), Research Cruise
Overview
We recover an ADCP, three Landers, two SEASAW systems which were deployed in KH-18-J02C and KS-17-J08C cruises to obtain variation of temperature, salinity, current and others for ecosystem model off Sanriku. We conduct the hydrographic observation with the CTD-Carousel water sampler system and the FRRF-Rinko profiler system at 28 stations. We also collect zooplankton.

Overview of the Observation

Research Point Table
Point
NameD-3
Coordinates38.5025,141.8525
Remarkshydrographic observation Site
NameD-4
Coordinates38.5165,142.098833
Remarkshydrographic observation Site
NameD-5
Coordinates38.507167,142.341333
Remarkshydrographic observation Site
NameM-4
Coordinates39.333333,142.461833
Remarksmooring and observation Site
NameO-4
Coordinates39.268833,142.674833
Remarkshydrographic observation Site
NameO-3
Coordinates39.265,142.505833
Remarkshydrographic observation Site
NameO-2
Coordinates39.243167,142.3415
Remarkshydrographic observation Site
NameO-1
Coordinates39.253833,142.172833
Remarkshydrographic observation Site
NameM-2
Coordinates39.338333,142.168333
Remarksmooring and observation Site
NameD-6
Coordinates38.500333,142.589667
Remarkshydrographic observation Site
NameD-7
Coordinates38.508,142.834833
Remarkshydrographic observation Site
NameM-3
Coordinates39.534167,142.247
Remarksmooring and observation Site
NameH-1
Coordinates40.324833,142.009333
Remarkshydrographic observation Site
NameH-2
Coordinates40.3295,142.244833
Remarkshydrographic observation Site
NameH-3
Coordinates40.335333,142.496667
Remarkshydrographic observation Site
NameH-4
Coordinates40.329333,142.738167
Remarkshydrographic observation Site
NameH-5
Coordinates40.332667,142.982
Remarkshydrographic observation Site
NameH-6
Coordinates40.334833,143.238
Remarkshydrographic observation Site
Polygon
NameKH-18-J03C research area
Coordinates38,141/38,143.5/40.4167,143.5/40.4167,141/38,141
Research Point Map & Track Chart Map & Point List
0334_R01_04.png
Results and Future Plan
In KH-18-J03C cruise, we recovered an ADCP and three Landers which had been deployed to obtain variation of temperature, salinity, current and others for ecosystem model off Sanriku in KH-18-J02C and KS-17-J08C cruises. SEASAW, which had been deployed in the KH-18-J03C cruise and drifted on Aug. 19th, was also recovered. We conducted the hydrographic observation with the CTD-Carousel water sampler system and the FRRF-Rinko profiler system to obtain the hydrographic data at 18 stations. We also collected zooplankton.

Investigation Item and Data Acquisition

Investigation ItemData Acquisition
measurement of water temperature, salinity, dissolved oxygen and fluorescence with CTD system and seawater samplingWater samples for analysis of salinity, total dissolved carbon, total alkalinity, nutrients and phytoplankton composition
measurement of water temperature, salinity, dissolved oxygen, fluorescence and turbidity with FRRF-Rinko profiler systemWater temperature, salinity, dissolved oxygen, fluorescence and turbidity
plankton net castzooplankton sample

Reference

Related Observation Plan
FY2018 KH-18-J03C cruise:Researches on marine ecosystem dynamics in the Tsunami affected area off Sanriku
Related Observation Data
HAKUHO MARU KH-18-J03C Navigation
HAKUHO MARU KH-18-J03C Conductivity-Temperature-Depth Profiler (CTD)
HAKUHO MARU KH-18-J03C Biological Sample
HAKUHO MARU KH-18-J03C RINKO profiler
SEASAW mooring system TS continuous observation recovered during KH-18-J03C cruise
HAKUHO MARU KH-18-J03C Bathymetry (MBES)
HAKUHO MARU KH-18-J03C Gravity
HAKUHO MARU KH-18-J03C Shipboard Acoustic Doppler Current Profiler (ADCP)

Person in charge of Investigation

Representative personShuichi Watanabe
OrganizationJapan Agency for Marine-Earth Science and Technology
DepartmentMutsu Institute for Oceanography (MIO), Research Institute for Global Change (RIGC)

Contact person about data & samples

Representative personShuichi Watanabe
OrganizationJapan Agency for Marine-Earth Science and Technology
DepartmentMutsu Institute for Oceanography (MIO), Research Institute for Global Change (RIGC)
Representative personMasahide Wakita
OrganizationJapan Agency for Marine-Earth Science and Technology
DepartmentAnalyses of Changes in East Japan Marine Ecosystems Research and Development Group (JAM-TEAMS), Marine Biodiversity and Environmental Assessment Research Center (BioEnv)

Keywords

Fiscal Year2018
OrganizationJapan Agency for Marine-Earth Science and Technology
CategoryMooring system (Observation buoy)
Research Cruise
Research AreaNorth Sanriku
South Sanriku
DisciplineOcean physics -> Water temperature
Ocean physics -> Salinity
Ocean physics -> Ocean current / Tidal current (Current direction/Current speed)
Ocean physics -> Transparency / Turbidity
Ocean chemistry -> Salinity
Ocean chemistry -> Dissolved oxygen
Ocean chemistry -> Nutrients
Ocean chemistry -> Total carbonic acid
Ocean chemistry -> Alkalinity
Ocean biology / Ocean ecology -> Plankton