Daily Report
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Exp.333 Daily Report

January

1.10, 2011
Day:30

Weather: Cloudy
Location:Kumanonada

Sailed back to Shingu port after recovering all transponders. Science party revised the site reports and short presentation on the overview of basalt petrology. Ended Expedition 333 at 2400hrs.

1.9, 2011
Day:29

Weather: Cloudy
Location:Site C0012, Nankai Trough

Recovered transponders from Site C0012 and C0011. Most of core processing finished today and cleaning work was immediately carried out. Revision and discussion on site reports made busy to science party. Today’s science seminar focus was on Tephra Stratigraphy in Japan, and general seminar from co-chief scientists was Expedition Overview. Core recovery and quality discussion was made.

1.8, 2011
Day:28

Weather: Cloudy
Location:Site C0012, Nankai Trough

Continued pulling out, recovered transponders from Site C0012. Daily science seminar focused on geothermal study and mudstone permeability of cores from Expedition 316. Core processing continued in the lab with few specialists and lab technicians.

1.7, 2011
Day:27

Weather: Cloudy
Location:Site C0012G, Nankai Trough

Continued RCB coring to Total Depth of 630.5 meters below seafloor, spot kill mud and pull out the assembly. Core processing continued in the lab with few specialists and lab technicians. Editorial reviews on reports for Site C0012 sediments, and second round for other sites. Co-chief scientists coordinated for the synthesis figures and expedition summary presentations.
Today’s seminars focused on "submarine canyons and submarine landslides".

1.6, 2011
Day:26

Weather: Cloudy
Location:Site C0012G, Nankai Trough

Continued RCB coring with full advance to 591 m and switched to short advance to get better recovery. Recovery improved and continuous longer pieces after switched to short advance. Daily science seminar continued with two presentations, mudstone permeability and heat flow variations. Topical discussion on "fluid flow and heat flow" across specialty groups was done and writing reports continued for Site C0012 sediments. Core processing continued in the lab with few specialists and lab technicians.

1.5, 2011
Day:25

Weather: Cloudy
Location:Site C0012G, Nankai Trough

Washed down to 515 m, circulate hole, sweep mud, deplugger run and began RCB coring to 543.5 m. Daily science seminar began with two presentations, subduction input ash and alteration of basalt. Writing reports continued for Site C0012 sediments.

1.4, 2011
Day:24

Weather: Cloudy
Location:Site C0012G, Nankai Trough

Run and spud Hole C0012G and washed down to 515 meter below seafloor.
Results from each group presented and discussed at the C0012 site summary meeting. Remaining/selective measurements continued on cores from Hole C0012F.

1.3, 2011
Day:23

Weather: Cloudy
Location:Site C0012F, Nankai Trough

Deplugger & center bit operations, pull out of the hole, make up new RCB assembly with four roller cone bit. Continued processing and sampling of the Hole C0012E and F. Operational updates were made at science party meeting, and preliminary report action plan was discussed and initiated.

1.2, 2011
Day:22

Weather: Cloudy
Location:Site C0012F, Nankai Trough

RCB coring from 520 meters below seafloor, deplugger & center bit operations. Two RCB cores from Hole C0012F were taken with low recovery over short advance. Core flow was minimized and began core description and other measurements. Remaining cores from Hole C0012E were processed and sampled.

1.1, 2011
Day:21

Weather: Cloudy
Location:Site C0012E, Nankai Trough

Spud Hole C0012F and washed down with RCB assembly. Confirmed the core sample handling among science party at the daily meeting. Core processing and sampling continued HPCS cores from Hole C0011D, and individual groups finalized the C0011 site reports.


12.31, 2010
Day:20

Weather: Cloudy
Location:Site C0012E, Nankai Trough

After receiving last ESCS core from Hole C0012E, borehole assembly was pulled out of the hole and waited on weather. New RCB assembly was prepared and running into upon changing of better weather in the evening. Core processing and sampling continued cores from Hole C0011D, and prepared site chapter reports by groups.

12.30, 2010
Day:19

Weather: Cloudy
Location:Site C0012E, Nankai Trough

ESCS coring began at the Hole C0012E under tight weather window for 12 hrs. Three cores were cut under strong wind and rough sea where last core had good recovery. Core processing-sampling continued for Hole C0012C. C0011 site summary meeting identified highlights of the results from each group and began report writing.

12.29, 2010
Day:18

Weather: Cloudy
Location:Site C0012E, Nankai Trough

New hole C0012E was washed down to the 500 m below seafloor with ESCS coring assembly. Core processing and sampling continued last four short cores from C0011D, and prepared for the C0011 site summary presentations by groups.

12.28, 2010
Day:17

Weather: Cloudy
Location:Site C0012D, Nankai Trough

HPCS coring continued at the Hole C0012D with good quality and recovery under shorter advances to the deeper. At 1840 hr, coring ended due to the strong wind and bad weather, and then pulled out of the hole for the weather standby. Core sampling progress faster with shorter cores. APCT3 temperature measurements continued every four cores due to the shorter advances.

12.27, 2010
Day:16

Weather: Cloudy
Location:Site C0012D, Nankai Trough

Pull out borehole assembly from the hole C0012C, made up sinker bar, shot test core at the mud line of Hole C0012D, washed down to the 118m and began HPCS coring. HPCS coring continued at the Hole C0012D with good quality and recovery. Core sampling of C0011D was slow due to the harder cores in full recovery. APCT3 temperature measurements continued every two cores with good results.

12.26, 2010
Day:15

Weather: Cloudy
Location:Site C0012C, Nankai Trough

Due to the coring assembly trouble, Hole C was abandoned at the depth of 123.5m and moved to Hole D to continue coring. Six temperature measurements with APCT3 at every two cores were performed at Hole C0012C to a depth of 116m. Science party continued struggling with harder cores while handling fast HPCS cores at the core cutting area.

12.25, 2010
Day:14

Weather: Cloudy
Location:Site C0011D, Nankai Trough

Set transponders, running into Hole C0012C and began HPCS coring. Non coring period during transit- setting transponders, was faster on core processing-sampling. Reports writing kept the science party busy while enjoying small part of their time on Christmas dinner and special drinks. Deeper cores from Hole C0011D become harder and switched to various core cutters from wire. HPCS coring from new site began earlier than estimated with faster speed, high quality and full recovery.

12.24, 2010
Day:13

Weather: Cloudy
Location:Site C0011D, Nankai Trough

ESCS coring at Hole C0011D from 301.5 to 359.5m, pull out of the hole and moved to Site C0012C and set transponders. Due to the good quality and high recovery ESCS cores in half-advance coring and operations moved ahead of time, cores were taken deeper than primary target depth. Site C0012 coring plan and options were discussed at the science party meeting and consensus was brought to the project management team with operational time estimates. Science party continued processing and sampling while handling last cores from Hole C0011D. As formation is harder at the deeper, sampling and processing took longer time.

12.23, 2010
Day:12

Weather: Cloudy
Location:Site C0011D, Nankai Trough

Continued good quality and high recovery ESCS cores with half advance to the primary target depth (350 m) ahead of time. Hence, coring was extended to the deeper target of lower recovery RCB cores in the Expedition 322 where alternating tuffaceous sandstone locate. In addition, core processing and sampling continued for the shallower depths.

12.22, 2010
Day:11

Weather: Cloudy
Location:Site C0011D, Nankai Trough

ESCS coring at Site C0011D. C0018A site chapter report submission has been extended to have more time for lithostratigraphic, XRD, XRF analyses. Sampling and processing of C0011A cores continued as harder mudstone are taken by ESCS in higher recovery and satisfactory quality compared to previous XCB cores in the Nankai Trough.

12.21, 2010
Day:10

Weather: Cloudy
Location:Site C0011D, Nankai Trough

EPCS/ESCS coring at Site C0011D. Science party continued working on whole & half core sampling, standard measurements while preparing for C0018A site report. Continued discussion on Mass Transport Deposits and overall lithostratigraphic units referring to the core and X-CT images. First XRD results came out and XRF to follow later. “Methods” chapter is in editorial review.

12.20, 2010
Day:9

Weather: Cloudy
Location:Site C0011D, Nankai Trough

HPCS coring at Site C0011D. Science party working on both whole round core handling for C0011D, and standard measurements-sampling for C0018A last batch of cores. First round edits “Methods” chapter.

12.19, 2010
Day:8

Weather: Cloudy
Location:Site Site C0011D, Nankai Trough

HPCS coring at Site C0011D continued. Science party working on both core sampling as high quality-good recovery piston cores coming into the core cutting area, and standard measurements continued for C0018A cores. C0018A site summary meeting was held with presentations from six main groups on their measurement highlights and issues to begin expedition report.

12.18, 2010
Day:7

Weather: Cloudy
Location:Site C0011C, Nankai Trough

Transponder calibration and running into the hole with HPCS borehole assembly. Began coring from seafloor to the 22.5 m. Pull out of the hole to fix the oil leak at core line wiper booster and coring continued from hole D. Science party working on both core sampling, standard measurements, and "Methods" chapter final edits while handling the cores from C0011C.

12.17, 2010
Day:6

Weather: Cloudy
Location:Site C0018A, Nankai Trough

Picked up transponders and transit to Site C0011C, put transponders.
As core description proceeds, main features observed in the cores are disturbed zones interpreted as mass transport deposits (MTDs) and layers of ash and/or volcaniclastic sand.

12.16, 2010
Day:5

Weather: Cloudy
Location:Site C0018A, Nankai Trough

Continuous EPCS/ESCS coring from the 247.65 to 314.15 m. Core flow further progress to faster as waiting whole round cores piles up.
Coring switched to the ESCS as last corer to the Total Depth, and then coring stopped at 36X core at the depth of 314.15 m due to reaching the maximum days for the APL site. During piston coring, downhole temperature was measured with the ATCP-3 in approximately 30-m interval. Six data points were obtained between the depths of 35.15 and 190.65 m.

12.15, 2010
Day:4

Weather: Cloudy
Location:Site C0018A, Nankai Trough

Continuous EPCS coring from 190.65 to the 247.65 m. Full core flow in action and in faster progress while lab inductions continued for few groups. Corer was switched to EPCS due to the HPCS advance was too short.

12.14, 2010
Day:3

Weather: Cloudy & strong wind
Location:Site C0018A, Nankai Trough

Continuous HPCS coring and temperature measurements with APCT3 from 136.15 to the 190.65 m. Began splitting cores and core processing, sampling and full measurements. Science seminar was held with three interesting topics. Last batch of scientists arrived and core flow slowly in action with full team.

12.13, 2010
Day:2

Weather: Heavy rain
Location:Site C0018A, Nankai Trough

Continuous HPCS coring and temperature measurements with APCT3 for every 4 cores from 73.15 to the 136.15 meters below seafloor. Core cutting and processing of whole round cores was carried out with day and night shifts by scientists. Focused lab inductions were carried by groups with lab technicians. Various science meetings were held in focus of sampling, sample allocations and measurement operations.

12.12, 2010
Day:1

Weather: Cloudy, rain
Location:Site C0018A, Nankai Trough

Yesterday, we prepared for first core from C0018A. Running into the hole after making up the HPCS/EPCS/ESCS coring assembly. Tagged seabed (3117 m below rotary table) at 2245 hr without ROV monitoring. Start HPCS coring and temperature measurements with APCT3 for every 4 cores from seafloor to the 73.15 meters below seafloor. Core cutting and processing of whole round cores was carried out while scientists taking lab inductions with lab technicians. Various science meetings were held in focus of sampling, sample allocations and measurement operations.