Daily Report
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Exp.380 Daily Report

February

2.7, 2018
Day:27

Location: Shimizu, Japan
Weather: Clear

IODP Exp. 380 successfully finish by the midnight of 7 February 2018.



Photo of the Day:
Expedition scientists and CLSI@Sea researchers disembarked in Shimizu, Japan

2.6, 2018
Day:26

Location: En route to Shimizu, Japan
Weather: Clear

Finalizing science reports.







Photo of the Day:
Expedition Scientists in the microbiology lab, preparing sensors for unloading.

2.5, 2018
Day:25

Location: IODP Site C0006
Weather: Clear

A final acoustic transponder check confirmed that the sensors were all working as last checked. Working to complete the expedition science reports.

Photo of the Day:
Scientists and CLSI@Sea researchers relieving some tension with some Wii Mario Go-Cart competition.

2.4, 2018
Day:24

Location: IODP Site C0006
Weather: Clear

Working to complete the expedition science reports.








Photo of the Day:
A calm sun rise while on station off the Kii Peninsula.

2.3, 2018
Day:23

Location: IODP Site C0006
Weather: Partly cloudy

Acoustic modem testing on the LTBMS CORK head passed all tests after landing on the wellhead. Recovered temperature and pressure data during the cementing operations. In testing after cementing, all sensors remained good after except for one thermistor.



Photo of the Day:
The LTBMS CORK head landed on the ROV platform/wellhead.

2.2, 2018
Day:22

Location: IODP Site C0006
Weather: Overcast

Molding the cable to the spare ODI connector was completed and testing showed communication with the sensors with no errors. Acoustic modem testing on the CORK head passed all tests.



Photo of the Day:
Co-Chief Keir Becker and CLSI@Sea researchers Tatiana Maison and Baiyuan Gao on the rotating guide roller in the moon pool, in front of the C0006G LTBMS CORK head.

2.1, 2018
Day:21

Location: IODP Site C0006
Weather: Rain

The seismometer sensor failed its’ last communications check. Various methods and strategies were used to evaluate the situation. Finally, the ODI connector was removed and verified to have a broken contact. Direct communication was re-established, and molding the cable to the spare ODI connector was begun.


Photo of the Day:
CLSI@Sea researchers and Exp 380 scientists at moon pool.


January

1.31, 2018
Day:20

Location: IODP Site C0006
Weather: Cloudy

Continued successful testing of sensors after cable cutting and initial epoxy setting & soldering for the cable connectors. Strainmeter, tilt-combo, and seismometer have been giving good responses to testing.




Photo of the Day:
CLSI@Sea Lab Manager Lena Maeda signing the Hole C0006G LTBMS CORK head in the moon pool before deployment.

1.30, 2018
Day:19

Location: IODP Site C0006
Weather: Partly cloudy

Continued successful testing of sensors as the instrument carrier was run into the moon pool and after the cables were passed through the packer. The CLSI@Sea researchers are working on their final report prior to submission for publication.


Photo of the Day:
Gael Lymer leads a discussion on the report status and contents with the CLSI@Sea researchers.

1.29, 2018
Day:18

Location: IODP Site C0006
Weather: Partly cloudy

Testing sensors after connection to the data/power cables was successfully completed after the instrument carrier was run into the moon pool. The CLSI@Sea researchers are working on their final report prior to submission for publication.


Photo of the Day:
Expedition scientists Joshua Edgington, Burhan Senyener, and Yuya Machida standing by the catwalk waiting to return to the Core Tech Work Shop to clear sensor testing equipment.

1.28, 2018
Day:17

Location: IODP Site C0006
Weather: Rain

The pressure sensing unit pressure testing on the LTBMS CORK head was finalized. The strainmeter and instrument carrier were moved to the middle pipe rack in preparation for deployment. The CLSI@Sea researchers are working on getting a draft report ready in coordination with the returned CLSI@Sea program members.

Photo of the Day:
Rig floor image from CCTV showing the casing scraper being set up prior to running down hole.

1.27, 2018
Day:16

Location: IODP Site C0006
Weather: Cloudy

The pressure sensing unit on the LTBMS CORK head continued to demonstrate loss of pressure, traced to the CORK head valve for the P1 pressure port. This was replaced and testing continues to verify that it works. The CLSI@Sea scientists discussed target journals for report publication.


Photo of the Day:
Scientists begin the day with a workout in the ship’s gym.

1.26, 2018
Day:15

Location: IODP Site C0006
Weather: Cloudy

The pressure sensing unit was again mounted on the LTBMS CORK head, and pressure testing began for another 24-hr run, due to finish after 1200 h on 27 Jan. The tilt-combo logger testing continues, and shows no signs of faults as before.


Photo of the Day:
Tiltcombo #4 data logger undergoing troubleshooting testing in the Microbiology Lab, Core Processing Deck.

1.25, 2018
Day:14

Location: IODP Site C0006
Weather: Cloudy

The pressure sensing unit testing showed that the leak had in fact been identified and solved. The spare tilt-combo logger is still undergoing testing to confirm that the issue with logging stopping prematurely has been identified.

Photo of the Day:
Yukari Kido, Gaku Kimura, and Ginta Motohashi discuss using resistivity image logging data to identify faults and bedding planes.

1.24, 2018
Day:13

Location: IODP Site C0006
Weather: Partly cloudy

Pressure data seem to show that the PSU leak issue has been resolved, and the data plots support this. The spare tiltmeter was delivered to the lab, and testing began. Troubleshooting the spare tilt/combo data logger revealed an exposed thread in the ground wire, which may be related to why it periodically stops logging data.

Photo of the Day:
Expedition scientists set 1/4-inch tubing on the pressure sensing unit as part of troubleshooting a leak in one of the sensor couplings.

1.23, 2018
Day:12

Location: IODP Site C0006
Weather: Partly cloudy

Pressure data failed conversion after download. This was resolved and testing continues to see if error occurs again. The pressure unit itself demonstrated some leakage around the connections to the hydraulic nipple assembly. This was caused a loose nut, and after tightening, pressure testing resumed to see if pressure drops continued.

Photo of the Day:
Gaku Kimura discussing some recent findings and possible research paths with the CLSI@Sea researchers.

1.22, 2018
Day:11

Location: IODP Site C0006
Weather: Overcast

Analysis of the pressure test results showed some possible solutions to the differing responses in parallel tests by the two formation sensors. Masa Kinoshita presented a talk on heat flow regimes in the Nankai region, and the potential contributions the Hole C0006G LTBMS can provide to understanding regional heat flow and heat flow projections deeper into the Nakai accretionary prism.

Photo of the Day:
Expedition 380 Scientists Burhan Senyener, Toshinori Kimura, Joshua Edgington, and Tian Sun work on testing the thermistor string in the moon pool.

1.21, 2018
Day:10

Location: IODP Site C0006
Weather: Partly cloudy

Expedition methods and site chapter writing continued. Plans for the LTBMS CORK sensor running and sensor checks in the moon pool were discussed. Tian Sun gave a talk on Japan Trench geodesy and rheological responses of the mantle and crust to the Tohoku and other large earthquakes.

Photo of the Day:
CLSI@Sea researchers on rig tour. Scene from the ready mud tank room aft of the moon pool.

1.20, 2018
Day:9

Location: IODP Site C0006
Weather: Partly cloudy

Pressure tests of the LTBMS CORK pressure sensing unit seem to show that one pressure line was losing pressure. The leak was traced to the hydraulic plumbing on the LTBMS CORK head valve, and the fitting was tightened. Work continued on attaching the sensors and data loggers to the LTBMS sensor carrier. Drafting figures and tables for the expedition volume continued.

Photo of the Day:
CLSI@Sean researcher Dr. Christine Regalla (Boston University) reacting to her work station birthday decorations.

1.19, 2018
Day:8

Location: IODP Site C0006
Weather: Partly cloudy

Testing the LTBMS CORK pressure sensing unit continued on the forward pipe rack. The LTBMS CORK pressure sensing unit encountered an error when downloading data. After investigation,it was determined that data recording had not been started properly when the unit was "deployed" the last time. Follow-up testing did not replicate the error. Work began on attaching the sensors and data loggers to the LTBMS sensor carrier. Writing science reports for the expedition volume continued. The acoustic modem was attached to the LTBMS CORK head.

Photo of the Day:
IODP Exp 380 scientists (Joshua Edgington, Toshinori Kimura, and Burhan Senyener) mounting the acoustic modem on the LTBMS CORK head in the forward pipe rack.

1.18, 2018
Day:7

Location: IODP Site C0006
Weather: Partly clear

The pressure sensing unit (PSU) was moved to the forward pipe rack for testing on the LTBMS CORK head. The backup strainmeter was moved from the Core Tech Work Shop to the same location as the LTBMS CORK head, and the thermistor string was prepared on its'spool in the moon pool. The acoustic modem mount was spot-welded on the CORK head by the MQJ welder.

Photo of the Day:
Looking aft down into the moon pool, as the UWTV is being deployed from the working cart.

1.17, 2018
Day:6

Location: IODP Site C0006
Weather: Partly Cloudy

Preparing LTBMS components for deployment. CLSI@Sea sample requests submitted and reviewed.
The pressure sensing unit (PSU) was again pressure tested at 42 MPa overnight. Both primary and secondary strainmeters passed testing with the acoustic modem in the Core Tech Work Shop. The LTBMS CORK head was moved to the forward pipe rack.

Photo of the Day:
Lena Maeda and MWJ Lab Tech Kazuma Takahashi explain measuring p-wave velocity to the CLSI@Sea researchers on the Core Processing Deck.

1.16, 2018
Day:5

Location: IODP Site C0006
Weather: Clear

Preparing LTBMS components for deployment. CLSI@Sea research plans and collaboration reviewed.
The tiltmeter and broadband seismometer were tested with the acoustic modem. The pressure sensing unit (PSU) was mounted on the PSU frame and pressure tested at 42 MPa overnight.

Photo of the Day:
Scientists Joshua Edgington, Toshinori Kimura, Burhan Senyener, and Tian Sun placing the tiltmeter sensor into its'pressure housing in D/V Chikyu's Microbiology Lab on the Core Processing Deck.

1.15, 2018
Day:4

Location: Shimizu harbor
Weather: Clear

Leave Shimizu harbor, move to Site C0006. CLSI@Sea meetings and LTBMS sensor checks. All Scientists and CLSI@Sea Program participants took a break to gather on the helideck to watch D/V Chikyu's departure from Shimizu harbor. Terrific views of Mt Fuji could be seen as Chikyu headed out into the anchorage to discharge the Pilot and lower azimuth thrusters to begin steaming to Site C0006.

Photo of the Day:
D/V Chikyu leaving quayside in Shimizu Harbor at 0900 h and en route to Site C0006.

1.14, 2018
Day:3

Location: Shimizu harbor
Weather: Clear

The LTBMS sensors were set up in the core processing deck microbiology lab, and sensor status checks were started. The equipment lists and locations aboard ship were checked and confirmed.

Photo of the Day:
IODP Exp. 380 and CLSI@Sea Program co-Chiefs, Program Mentors, Science Party Members, and Program Researchers.

1.13, 2018
Day:2

Location: Shimizu harbor
Weather: Clear

Science party worked on sensor set-up and calibration/testing plans and had an IODP publications briefing.

Photo of the Day:
CLSI@Sea Mentor Dr Michi Strasser discussing sediment characteristics in selected Site C0006 & C0007 core sections for the program and expedition scientists. Drs. Ginta Motohashi, Joshua Edgington, Tatiana Maison, Baiyuan Gao, Christine Regalla, Kiyoshi Suehiro, and Burhan Senyener.

1.12, 2018
Day:1

Location: Shimizu harbor
Weather: Clear

Science party moved to board Chikyu in Shimizu harbor. Luggage and initial safety induction meetings held.

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