noaa-ocean-20408 Juan de Fuca Ridge Sediment Physical Property Data over the last 700,000 Years Costa, K.; McManus, J.F.; Boulahanis, B.; Carbotte, S.M.; Winckler, G.; Huybers, P.J.; Langmuir, C.H. Juan de Fuca Ridge Sediment Physical Property Data over the last 700,000 Years 2016-08-15 NCDC-Paleoclimatology ONLINE Files Pending https://www.ncdc.noaa.gov/paleo/study/20408 Investigator K. Costa Investigator J.F. McManus Investigator B. Boulahanis Investigator S.M. Carbotte Investigator G. Winckler Investigator P.J. Huybers Investigator C.H. Langmuir earth science paleoclimate paleoceanography age,null,null,calendar kiloyear before present,null,paleoceanography,null,null,N,null earth science paleoclimate paleoceanography magnetic susceptibility,sediment,null,dimensionless (SI system),null,paleoceanography,null,null,N,x10-6 units earth science paleoclimate paleoceanography density,dry sediment,null,gram per cubic centimeter,null,paleoceanography,corrected,null,N,corrected for salt assuming S=35 earth science paleoclimate paleoceanography depth,null,null,centimeter,null,paleoceanography,null,null,N,null earth science paleoclimate paleocean physical properties earth science paleoclimate paleocean magnetic susceptibility geoscientificInformation 686150 cal yr BP 6590 cal yr BP Complete 44.70817 45.04507 -130.8785 -130.45737 -2794 -2655 Ocean Pacific Ocean North Pacific Ocean AT26-19 05PC>LATITUDE 44.97283>LONGITUDE -130.8785 Ocean Pacific Ocean North Pacific Ocean AT26-19 20PC>LATITUDE 44.70817>LONGITUDE -130.70383 Ocean Pacific Ocean North Pacific Ocean AT26-19 38PC>LATITUDE 44.97053>LONGITUDE -130.60653 Ocean Pacific Ocean North Pacific Ocean AT26-19 12PC>LATITUDE 44.8975>LONGITUDE -130.50433 Ocean Pacific Ocean North Pacific Ocean AT26-19 35PC>LATITUDE 44.99118>LONGITUDE -130.45737 Ocean Pacific Ocean North Pacific Ocean AT26-19 39BB>LATITUDE 45.04507>LONGITUDE -130.83318 Ocean Pacific Ocean North Pacific Ocean AT26-19 09PC>LATITUDE 44.88717>LONGITUDE -130.63683 None Please cite original publication, online resource, dataset and publication DOIs (where available), and date accessed when using downloaded data. If there is no publication information, please cite investigator, title, online resource, and date accessed. The appearance of external links associated with a dataset does not constitute endorsement by the Department of Commerce/National Oceanic and Atmospheric Administration of external Web sites or the information, products or services contained therein. For other than authorized activities, the Department of Commerce/NOAA does not exercise any editorial control over the information you may find at these locations. These links are provided consistent with the stated purpose of this Department of Commerce/NOAA Web site. English DOC/NOAA/NESDIS/NCEI National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce https://www.ncdc.noaa.gov/data-access/paleoclimatology-data DATA Center Contact Bruce Bauer bruce.a.bauer@noaa.gov paleo@noaa.gov 303-497-6280 303-497-6513

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Boulder CO 80305-3328 USA online ASCII Costa, K.M., J.F. McManus, B. Boulahanis, S.M. Carbotte, G. Winckler, P.J. Huybers, and C.H. Langmuir 2016 Marine Geology 380 163-173 10.1016/j.margeo.2016.08.003 https://www.sciencedirect.com/science/article/pii/S0025322716301517

Sedimentation near mid-ocean ridges may differ from pelagic sedimentation due to the influence of the ridges' rough topography on sediment deposition and transport. This study explores whether the near-ridge environment responds to glacial-interglacial changes in climate and oceanography. New benthic d18O, radiocarbon, multi-sensor track, and phys- ical property (sedimentation rates, density, magnetic susceptibility) data for seven cores on the Juan de Fuca Ridge pro- vide multiple records covering the past 700,000 years of oceanographic history of the Northeast Pacific Ocean. System- atic variations in sediment density and coarse fraction correspond to glacial-interglacial cycles identified in benthic d18O, and these observations may provide a framework for mapping the d18O chronostratigraphy via sediment density to other locations on the Juan de Fuca Ridge and beyond. Sedimentation rates generally range from 0.5 to 3 cm/kyr, with back- ground pelagic sedimentation rates close to 1 cm/kyr. Variability in sedimentation rates close to the ridge likely reflects remobilization of sediment caused by the high relief of the ridge bathymetry. Sedimentation patterns primarily reflect di- vergence of sedimentation rates with distance from the ridge axis and glacial-interglacial variation in sedimentation that may reflect carbonate preservation cycles as well as preferential remobilization of fine material.

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