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CHIKYU MAIL NEWS Vol. 65, October 15th 2007

This mail news service provides you with information
about the Deep Sea Drilling Vessel "Chikyu" and
science and technology for the IODP Earth exploration.

CHIKYU HAKKEN WEB SITE
http://www.jamstec.go.jp/chikyu/
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IODP NanTroSEIZE Stage 1:
Expedition 314: NanTroSEIZE LWD Transect
Weekly Report #3
Date 12/Oct/2007
http://www.jamstec.go.jp/chikyu/eng/Expedition/NantroSEIZE/exp314_wr3.html

LWD drilling continued at Hole C0001D, with inclination survey
results ranging between 2.7 and 3.5 degree. Drilled to the 976 meter
below seafloor (mbsf) and decided to pull out. Scientific target on
this hole was achieved and decided to move next drill site because
of the dynamic positioning system problem.
A DPS specialist boarded the ship on October 7 and began working
on DPS troubleshooting. After pulling out from the hole and rig down
of the LWD tools and Drilling assembly, the Chikyu was moved 10 km
to Site NT3-01 for positioning and site survey with ROV on October 8.
While extensive testing for the DPS was ongoing, additional stands
of drill pipe needed for the deep water sites were picked up,
a free-fall-funnel was assembled, the ROV main umbilical cable was
cut and spliced, and general drill floor maintenance was continued. 
Upon return of the LWD logging tools on deck, data were downloaded
from the tools. Due to apparent damage during Hole C0001D drilling,
density and porosity data and seismic waveform data from the seismic
LWD tool could not immediately be retrieved from memory. The tool
was sent to the land base to retrieve the data from memory and
repair the tool. Two LWD technicians boarded Chikyu to troubleshoot
the tool, and determined that this tool also had to be transferred
off the ship to land base. Meanwhile, on October 9, the science party
received some data including resistivity and gamma imaging and
started analyzing the data. Sonic data processing was finished by
the data specialist onboard, in consultation with scientists, with results
provided to the scientists on October 11. The entire scientific party
is now working on the analysis of the logging data from Site C0001.
Continued the preparation for the coring expeditions, maintenance,
instrument setup and rearrangements were made. Geo-technical
core measurement data were input to J-CORES system, simulation
of geochemistry WRC measurements with X-ray CT, and core dry
run were also carried out.
Weekly safety drill (helicopter crash and abandon ship drill) was held
on October 7.
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Go to NanTroSEIZE Special Site:
http://www.jamstec.go.jp/chikyu/eng/CHIKYU/status.html

Go to Expedition 314 Photo Gallery:
http://www.jamstec.go.jp/chikyu/eng/Expedition/NantroSEIZE/exp314_pg.html

Go to NanTroSEIZE science plan:
http://www.jamstec.go.jp/chikyu/eng/Expedition/NantroSEIZE/index.html

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CHIKYU MAIL NEWS
To subscribe or unsubscribe,
http://www.jamstec.go.jp/chikyu/eng/mailnews/

CHIKYU HAKKEN web site introduces you to every
aspect of the Deep Sea Drilling Vessel "Chikyu" and
science and technology for the IODP Earth exploration.
http://www.jamstec.go.jp/chikyu/

The Integrated Ocean Drilling Program (IODP) is an
international marine research drilling program dedicated
to advancing scientific understanding of the Earth by
monitoring and sampling sub seafloor environments.
IODP drilling operations aboard the Chikyu are managed by
JAMSTEC through CDEX, Japan Implementing Organization.
http://www.iodp.org

"CHIKYU HAKKEN" means Discover the Earth in Japanese.
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