FN Archimer Export Format PT J TI A New Long Coring System for R/V Knorr BT AF Curry, William Broda, James Keigwin, Lloyd Mountain, Gregory Pisias, Nicklas AS 1:1;2:1;3:1;4:2;5:3; FF 1:;2:;3:;4:;5:; C1 Woods Hole Oceanographic Institution, Woods Hole, Mass, USA Rutgers, The State University of New Jersey, Piscataway, USA Oregon State University, Corvallis, USA C2 WOODS HOLE, USA UNIV NEW JERSEY, USA UNIV OREGON STATE, USA TC 0 UR https://archimer.ifremer.fr/doc/00240/35091/33587.pdf LA English DT Article CR IMAGES 1-MD101 BO Marion Dufresne AB A new 46-meter-long coring system was tested successfully during cruise 191 of research vessel (R/V) Knorr in September 2007. During sea trials in water depths of 4.6 kilometers on the Bermuda Rise, coring operations from the vessel—operated by the Woods Hole Oceanographic Institution (WHOI)—successively recovered piston cores increasing in length from 26 to 38 meters, with sediment recovery at 85–89% of the core barrel length. An additional 25-meter core was recovered in 670 meters of water on the upper continental slope off New Jersey. The Bermuda Rise location, which is a well-sedimented drift deposit at the northeastern margin of the rise, has been cored many times previously, including by R/V Knorr's giant piston corer in 1973, by R/V Marion Dufresne's Calypso corer in 1995, and by the Ocean Drilling Program's advanced piston corer (ODP/APC) in 1997. In comparing the sediment recovery of the systems, we determined that the WHOI long core recovered the stratigraphic section without any indication of stretching, effectively duplicating the results of the ODP/APC but without the unavoidable breaks between APC cores every 9.5 meters. In three deployments of the new corer, vertical compression occurred in the lower fourth of the core, while in two other deployments sediment recovery was undeformed for the full 38 meters of recovered sediment. PY 2008 PD APR SO Eos, Transactions American Geophysical Union SN 0096-3941 PU Wiley-Blackwell VL 89 IS 15 BP 142 EP 143 DI 10.1029/2008EO150002 ID 35091 ER EF