Statistical analysis of bulk nitrogen isotopes from IODP Site 323-U1342

Here, we present the results of a statistical analysis published in Knudson et al., (2021, Science Advances), which investigates nitrogen isotopes from Integrated Ocean Drilling Program Expedition 323 Site U1342 in the Bering Sea, from 0-1.2 Ma. We analyzed the Site U1342 15Nbulk record from Knudson...

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Bibliographic Details
Main Authors: Knudson, Karla P, Ravelo, Ana Christina
Format: Dataset
Language:English
Published: PANGAEA
Subjects:
323-U1342A
323-U1342C
323-U1342D
AGE
Bering Sea
Bering Sea Paleoceanography
Bulk Sediment
Color reflectance interval 850-950 nm wavelength
d15N
Depth
bottom/max
sediment/rock
top/min
DRILL
Drilling/drill rig
DSDP/ODP/IODP sample designation
Event label
Exp323
IODP Exp. 323
iron fertilization
Joides Resolution
Latitude of event
Longitude of event
nitrogen
nitrogen cycling
nitrogen isotope
nitrogen utilization
North Pacific
productivity
Sample code/label
Site U1342
Standard score
Statistical analysis
Statistics
δ15N
Online Access:https://doi.pangaea.de/10.1594/PANGAEA.932990
Description
Summary:Here, we present the results of a statistical analysis published in Knudson et al., (2021, Science Advances), which investigates nitrogen isotopes from Integrated Ocean Drilling Program Expedition 323 Site U1342 in the Bering Sea, from 0-1.2 Ma. We analyzed the Site U1342 15Nbulk record from Knudson and Ravelo (2015, Geophysical Research Letters, https://doi.org/10.1002/2015GL066317). In Knudson et al. (2021), the bulk d15N record was detrended and Z-scores were calculated to determine statistically significant peaks. Z-scores were significantly higher during laminated intervals compared to non-laminated intervals (0.779 versus -0.112, P ≤0.0001). These data, in combination with high-resolution paleo-productivity indicators at the same site, provide evidence for enhanced nitrate utilization during laminated intervals compared with non-laminated intervals.

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