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| CDEX Newsletter CHIKYU HAKKEN - Earth Discovery - |
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NanTroSEIZE: Towards Stage 2
In 2007 - 2008, Deep Sea Drilling Vessel Chikyu conducted the Stage 1 Nankai Trough Seismogenic Zone Experiment (NanTroSEIZE) expeditions under the Integrated Ocean Drilling Program (IODP). This Spring (2009), Chikyu will proceed to Stage 2 and start deep sea drilling anew at the Kumano Basin off the Kii Peninsula.
Stage 1 produced tremendous results. For the first time in the world, a core sample was directly extracted from the Megasplay fault at the central section of the Nankai Trough accretionary prism. In Stage 2, riser drilling will be carried out for the first time in the history of scientific drilling. With the aim of better understanding of the mechanisms that govern the development of major ocean-trench type earthquakes and tsunamis, preparations will start in 2009 for the future installation of a borehole observation system that will provide realtime data from the Nankai Trough plate subduction zone.
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[Published March 2009, Online ISSN: 1880-3261]
- SPECIAL TOPIC1:NanTroSEIZE: Toward Stage 2
- SPECIAL TOPIC2:IODP Challenges of the Mysteries of Earth Science
- GRAFIC GUIDE:Long term Borehole Monitoring System
- DISCOVER the Earth:Science Team will Reveal Past Climate Changes via Drilling in the Bering Sea
- FACE:IODP Project Staff -IODP Curator-
- CDEX DECK:Experiencing the world of a new Earth Science
- FOR THE FUTURE:This is the year when IODP breaks through
- Close Up:Meet the Chikyu at Smithsonian Museum of Natural History
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NanTroSEIZE Stage 1A Expeditions One Giant Step Completed
The world’s top scientists participated in the exciting Stage 1A of the “Integrated Ocean Drilling Program:
Nankai Trough Seismogenic Zone Experiment Project(NanTroSEIZE),” which will continue for the next several years. NanTroSEIZE targets the Nankai Trough of the Kumano-nada coast off the Kii Peninsula,where large M8-class earthquakes have repeatedly occurred.(continued on pdf file)
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[Published August 2008, Online ISSN: 1880-3261]
- SPECIAL TOPIC:NanTroSEIZE Stage 1A Expeditions One Giant Step Completed
- GRAFIC GUIDE:Chikyu Coring System
- EARTH DISCOVERY:Dynamism of the Subseafloor Biosphere
- FACE:Professional Drillers
- CDEX DECK:Find out the latest information on IODP and Chikyu!
- FOR THE FUTURE:Japanese Islands:Enhanced Understanding of Earthquakes
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September 2007 - Chikyu is a Go
6000 meters below the seafloor of the Nankai Trough - a world never before reached by mankind. An international scientific project to reveal the mechanisms behind earthquakes becomes operational.
Chikyu, a deep-sea drilling vessel, is in the final stage of preconditioning before departure for the Nankai Trough Seismogenic Zone Experiment (NanTroSEIZE) in September 2007, after numerous successful shakedown cruises. During the East Offshore Shimokita Peninsular Drilling Test and the Drilling Shakedown off Kenya in 2005 and 2006, we experienced many hardships, such as typhoons; however, by overcoming these trials, we became more confident in the abilities of Chikyu.
(continued on pdf file)
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[Published August 2007, Online ISSN: 1880-3261]
- SPECIAL TOPIC: September 2007 - Chikyu is a Go
- GRAPHIC GUIDE: Sub-Sea System, world-class technology and systems
- EARTH DISCOVERY:Kumano-nada 3D Seismic Survey Completed
- FACE: Logistics personnel supporting drilling operations of Chikyu behind the scenes
- CDEX DECK: Let's learm about Chikyu at the Science Museum!
- FOR THE FUTURE:NanTroSEIZE should advance the study on earthquakes!
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Test Drilling Performed to East off Shimokita Peninsula
The Deep-sea drilling vessel Chikyu left the port of Hachinohe on August 6,
2006, and carried out test drilling for a full 82 days off the Shimokita
Peninsula in water 1,200 meters deep. Nankai Trough seismogenic zone drilling (NanTroSEIZE) will be the first international project for the Chikyu. In preparation for that drilling expedition, due to start in September 2007 at Kumano-nada off the Kii Peninsula, many researchers who will be participating in NanTroSEIZE shipped on board the Chikyu during the Shimokita shakedown cruise to check on the drilling and on how well the research areas on the vessel are outfitted. We asked two of the NanTroSEIZE chief scientists for their thoughts on the Chikyu and on the drilling project that begins this fall.(continued on pdf file)
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[Published March 2007, Online ISSN: 1880-3261]
- SPECIAL TOPIC:Test Drilling Performed to East off Shimokita Peninsula
- GRAPHIC GUIDE: The Magnetic Yoke, A powerful magnet handles
- EARTH DISCOVERY:Logging-While-Drilling (LWD) technology
- FACE: Staff Scientists Coordinate On-board Researchers
- CDEX DECK: The world of the new earth sciences
- FOR THE FUTURE:The NanTroSEIZE Expedition Is Ready to Go!
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Test Operations Started off Shimokita Peninsula
The D/V CHIKYU sailed from the shipyard in Nagasaki in early August of 2005. Basic operation tests, vessel operation training, etc. were conducted off Nagasaki, in Suruga Bay, and off Boso Peninsula. In September, the vessel was opened to the public at several ports around Japan. In October, full-scale test operations began in preparation for international operations, which will start in September of 2007.
Here, we report about the first test operations in FY2005 that were implemented to the east of the Shimokita Peninsula, in Aomori Prefecture. (continued on pdf file)
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[Published March 2006, Online ISSN: 1880-3261]
- SPECIAL TOPIC:Test Operations Started off Shimokita Peninsula
- GRAPHIC GUIDE: DRAWWORKS, the World's Largest Lifting Capacity
- EARTH DISCOVERY:Core Samples are Analyzed and Examined in Detail on Board
- FACE:
Development of the Science Data Management System, J-CORES
- CDEX DECK: Deep Sea Drilling are Introduced at Science Museums
- FOR THE FUTURE:Drilling Vessel Aimed at Studying Earth's Past and Present and Acquiring Wisdom to Choose Its Future
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Investigating the Occurrence of Great Earthquakes
The magnitude 9.0 great earthquake that occurred off the coast of Sumatra on
December 26, 2004 caused enormous damage to many countries in the region around the Indian Ocean, and
cost the lives of more than 200,000 people. Ongoing initial investigations into the mechanics and dynamics
of this earthquake suggest that several focal areas of previous earthquakes along this fault zone were
triggered in rapid succession by the initiating earthquake. Similar geometry and geology characterize
the Nankai Trough subduction zone in Japan. (continued on pdf file)
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[Published August 2005, Online ISSN: 1880-3261]
- SPECIAL TOPIC:Investigating the Occurrence of Great Investigating the Occurrence of Great
Earthquakes
- GRAPHIC GUIDE: Iron Roughneck
- EARTH DISCOVERY:Creating a New Perspective of the Earth
- FACE:Close Up Profile of the Engineers of the D/V CHIKYU
- FOR THE FUTURE:Perspective of CDEX Director-General
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Journey to the Center of the Earth
Since the days of the Egyptians, human beings have dreamed of journeys into
the Earth. Underworld journeys have been the stuff of myth and fantasy. In Jules Verne's thrilling novel A
Journey to the Center of the Earth, Professor Lidenbrock and his nephew Axel explore a mysterious,
beautiful subterranean world by descending into an arctic volcano. This classic tale of adventure has
ignited the imaginations of countless readers, explorers and scientists. Verne is considered the father
of science fiction, and his theme is becoming science fact today. (continued on pdf file) |
[Published April 2005, Online ISSN: 1880-3261]
- Journey to the Center of the Earth
- D/V CHIKYU Construction History
- Organization Structure of IODP and CDEX
- CDEX Education and Outreach
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| IODP NanTroSEIZE Overview |
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| Overview of the Nankai Trough Seismogenic Zone Experiment (NanTroSEIZE) |
[Published April 2009]
First Access to the Megathrust Earthquake Zone
Drilling Provides Ground Truth Information
Scientific Ocean Drilling Sheds Light on Earthquake Mechanics
An All-out Challenge by the International Science Community
Comparing Two Drilling Technologies
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| NanTroSEIZE proceeds to Stage 2 |
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[Published April 2009]
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| Deep Sea Drilling Vessel CHIKYU |
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| Mechanisms of CHIKYU, onboard equipments and her 7,000
meters drilling capability |
 [Published June 2009(English), March 2006(Japanese)]
Drilling Equipments, Mud Circulation System,
Dynamic Positioning System, Research Laboratory,
Riser
Pipe and Drill Pipe, Living Compartment,
Helicopter Deck, Blow-Out Preventer
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| Center for Deep Earth Exploration |
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| CDEX has responsibility to plan, develop, survey, manage
scientific data of CHIKYU and her scientific objectives |
[Published May 2005]
- Earthquake Prediction?
- D/V CHIKYU can reach Earthquake Nest!
- Where are we from?
- Floating High-Tech Lab. D/V CHIKYU
- Fresh Mantle in hand?
- See the Past and Future of the Earth through Core!
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Toward an Understanding of Earth System Evolution:
Japan National Science Plan for the Integrated
Ocean Drilling Program - January 2003 - |
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| Japan is expected to play the central part in this project.
Therefore IODP has to make very concrete research theme suitable for Japanese leadership by reviewing
the international trend of forming scientific programs in the past. IODP must draw a blueprint for the
future where Japanese scientists can participate and take initiative. This plan was formulated by OD21SAC,
considering the concept of Japanese community of scientists presented in the domestic symposiums, various
kinds of related committees. (continued on pdf file) |
[Published November 2002]
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