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Map for the Arctic Ocean
IODP 302 Arctic Coring Expedtion (ACEX) was carried out at 88˚N (water depth 1250 m) on the Lomonosov Ridge during 7 August-13 September 2004.
D/V Vidar Viking and R/V Oden
Norwegian D/V Vidar Viking and Swedish R/V Oden employed for IODP Expedition 302 Arctic Coring Expedition (ACEX).
Drilling in the Arctic
Russian nuclear I/B Sovietsky Soyuz 23,600 T (left) and Norwegian D/V Vidar Viking (right) engaged in ice braking and drilling at 88˚N.
Deep-Sea floor drilling
D/V Vidar Viking (right) and R/V Oden (left) at 88˚N.
A drill bit employed during IOOP Expedition 302.
Multi sensor tracking system acquiring multiple physical properties of sediments.
Working in the lab aboard R/V Oden
R/V Oden (~10k tons) is an ice-braker and rearch vessel belonging to the Royal Academy of Sweden. The cores drilled by D/V Vidar Viking were transported twice a day to R/V Oden by helicopters.
Eocene siliceous microfossils
Abundant well preserved siliceous microfossils were finally encountered at 200 m below sea-floor (mbsf) down to 320 mbsf, after revealing no sign of preservation from the top of the cores at the sea-floor to 200 mbsf. The ages of sediments from 200 to 320 mbsf were determined with the microfossils as 44 million to 52 million years old (the Eocene Period). [See list of publications for more details.]
IODP 302 members celebrating the success of the first drilling at the North Pole.
Some of the primary findings of IODP 302 ACEX were published in Nature.
IODP 302 ACEX produced numerous important publications by scientists from more than 17 different countries. Here are some contributions made by the members of paleoenvironmental laboratory at the Kyushu University. Professor Kozo Tahahashi (http://paleobio.geo.kyushu-u.ac.jp/KT/jp.htm) and Dr. Jonaotaro Onodera were the ACEX participants on board R/V Oden.
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