# Bermuda Rise High Resolution 60-25KYrBP Geochemical Data
#----------------------------------------------------------------------- 
#                World Data Service for Paleoclimatology, Boulder 
#                                  and 
#                     NOAA Paleoclimatology Program 
#             National Centers for Environmental Information (NCEI)
#----------------------------------------------------------------------- 
# Template Version 2.0
# NOTE: Please cite original publication, online resource and date accessed when using this data.
# If there is no publication information, please cite Investigator, title, online resource and date accessed.
#
# Description/Documentation lines begin with #
# Data lines have no #
#
# Online_Resource: http://www.ncdc.noaa.gov/paleo/study/20248 
# Online_Resource: http://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/henry2016/henry2016pa-th.txt
#
# Archive: Paleoceanography
#
# Parameter_Keywords: geochemistry, radiogenic isotope
#---------------------------------------
# Contribution_Date
#    Date: 2016-08-16
#---------------------------------------
# Title
#    Study_Name: Bermuda Rise High Resolution 60-25KYrBP Geochemical Data
#---------------------------------------
# Investigators
#      Investigators: Henry, L.G.; McManus, J.F.; Curry, W.B.; Roberts, N.L.; Piotrowski, A.M.; Keigwin, L.D.
#---------------------------------------
# Description and Notes
#        Description: Pa/Th, carbonate, and stable isotope data collected from bulk sediment in Bermuda Rise sediment core KNR191 CDH19 
#	 covering 60-25 ka.  High Resolution uranium series results from the Bermuda Rise in the N. Atlantic provide insight into glacial AMOC.
#	 This file updated 1 December 2016; Age model slightly revised
#         Provided Keywords: AMOC, NADW, Pa/Th, Heinrich Event, Marine Isotope Stage 3
#---------------------------------------
# Publication
# Authors: L.G. Henry, J.F. McManus, W.B. Curry, N.L. Roberts, A.M. Piotrowski, L.D. Keigwin
# Published_Date_or_Year: 2016-07-29
# Published_Title: North Atlantic ocean circulation and abrupt climate change during the last glaciation
# Journal_Name: Science
# Volume: 353
# Edition: 
# Issue: 6298
# Pages: 470-474
# Report Number: TBD
# DOI: 10.1126/science.aaf5529
# Online_Resource: 10.1126/science.aaf5529
# Full_Citation: 
# Abstract: The most recent ice age was characterized by rapid and hemispherically asynchronous climate oscillations, whose origin remains unresolved. Variations in oceanic meridional heat transport may contribute to these repeated climate changes, which were most pronounced during marine isotope stage 3, the glacial interval 25 thousand to 60 thousand years ago. We examined climate and ocean circulation proxies throughout this interval at high resolution in a deep North Atlantic sediment core, combining the kinematic tracer protactinium/thorium (Pa/Th) with the deep water-mass tracer, epibenthic d13C. These indicators suggest reduced Atlantic overturning circulation during every cool northern stadial, with the greatest reductions during episodic Hudson Strait iceberg discharges, while sharp northern warming followed reinvigorated overturning. These results provide direct evidence for the ocean's persistent, central role in abrupt glacial climate change. 
#---------------------------------------
# Funding_Agency
#    Funding_Agency_Name: National Science Foundation
#    Grant: Graduate Research Fellowship, ATM-0936496, ATM-0836472, AGS 1548160
#---------------------------------------
# Site Information
# Site_Name: KNR191 CDH19
# Location: Ocean>Atlantic Ocean>North Atlantic Ocean 
# Country: 
# Northernmost_Latitude: 33.6907
# Southernmost_Latitude: 33.6907
# Easternmost_Longitude: -57.57598
# Westernmost_Longitude: -57.57598
# Elevation: -4541 m
#---------------------------------------
# Data_Collection
#   Collection_Name: Henry2016PaTh
#   First_Year: 62110
#   Last_Year: 24820
#   Time_Unit: cal yr BP
#   Core_Length: 38.81
#   Notes: 
#---------------------------------------
# Chronology_Information 
# Chronology: 
# Age model was generated by correlating XRF Ca counts in CDH19 to carbonate measurements made in core MD95-2036. 
#---------------------------------------
# Variables
# Data variables follow that are preceded by "##" in columns one and two.
# Variables list, one per line, shortname-tab-longname components (9 components: what, material, error, units, seasonality, archive, detail, method, C or N for Character or Numeric data)
#
## depth_m	Depth,,,m,,,,,N
## age_calkaBP	Age,,,kyrs,,,,,N
## pa/th232	Pa/Th232 Ratio,Bulk Sediment,,,,,,analytical technique: isotope ratio mass spectrometry,N
## pa/th232.err	Pa/Th232 Ratio Error,,2 sigma,,,,,analytical technique: isotope ratio mass spectrometry,N
#
#------------------------
# Data
# Data lines follow (have no #)
# Data line format - tab-delimited text, variable short name as header
# Missing Value: 
#
depth_m	age_calkaBP	pa/th232	pa/th232.err
10.52	24.82	0.064	0.0014
10.76	25.11	0.066	0.0013
11.00	25.46	0.061	0.0014
11.24	25.79	0.065	0.0016
11.48	26.14	0.068	0.0021
11.72	26.37	0.073	0.0017
11.96	26.72	0.064	0.0013
12.12	26.95	0.064	0.0012
12.20	27.03	0.065	0.0015
12.52	27.36	0.066	0.0015
12.68	27.52	0.065	0.0024
12.84	27.68	0.062	0.0022
13.00	27.95	0.073	0.0015
13.24	28.35	0.077	0.0014
13.40	28.64	0.065	0.0011
13.56	28.95	0.056	0.0020
13.72	29.29	0.075	0.0016
13.80	29.49	0.076	0.0015
13.96	29.82	0.079	0.0021
14.08	30.07	0.077	0.0017
14.16	30.24	0.076	0.0012
14.24	30.41	0.074	0.0013
14.28	30.49	0.071	0.0014
14.44	30.89	0.068	0.0009
14.56	31.23	0.064	0.0000
14.68	31.53	0.069	0.0028
14.84	32.01	0.065	0.0013
14.96	32.34	0.062	0.0008
15.08	32.65	0.062	0.0011
15.16	32.77	0.068	0.0010
15.20	32.85	0.075	0.0014
15.36	33.09	0.080	0.0013
15.40	33.15	0.066	0.0016
15.48	33.69	0.067	0.0011
15.56	33.85	0.071	0.0007
15.76	34.67	0.072	0.0010
15.84	35.08	0.071	0.0007
15.88	35.20	0.063	0.0011
15.92	35.35	0.062	0.0007
15.96	35.52	0.064	0.0011
16.00	35.64	0.066	0.0008
16.04	35.71	0.066	0.0007
16.08	35.79	0.069	0.0006
16.12	36.04	0.076	0.0013
16.16	36.60	0.080	0.0000
16.20	36.90	0.076	0.0017
16.24	36.93	0.075	0.0023
16.28	36.98	0.078	0.0022
16.32	37.04	0.072	0.0015
16.36	37.07	0.071	0.0025
16.40	37.07	0.070	0.0052
16.44	37.08	0.063	0.0055
16.48	37.13	0.062	0.0047
16.52	37.65	0.061	0.0057
16.56	38.24	0.068	0.0040
16.60	38.27	0.059	0.0007
16.64	38.30	0.056	0.0012
16.68	38.35	0.058	0.0014
16.72	38.36	0.061	0.0013
16.76	38.39	0.063	0.0012
16.80	38.41	0.066	0.0018
16.84	38.41	0.068	0.0017
16.88	38.42	0.067	0.0077
16.92	38.42	0.066	0.0025
16.96	38.42	0.082	0.0055
17.00	38.42	0.091	0.0000
17.04	38.43	0.101	0.0075
17.08	38.43	0.084	0.0056
17.12	38.46	0.102	0.0041
17.16	38.57	0.103	0.0069
17.20	38.68	0.092	0.0051
17.24	38.83	0.096	0.0087
17.28	39.08	0.085	0.0055
17.32	39.37	0.085	0.0038
17.36	39.88	0.086	0.0007
17.40	39.98	0.057	0.0010
17.44	40.07	0.060	0.0010
17.48	40.17	0.064	0.0008
17.52	40.26	0.064	0.0007
17.56	40.37	0.061	0.0051
17.60	40.48	0.080	0.0030
17.64	40.58	0.080	0.0081
17.68	40.68	0.071	0.0096
17.72	40.80	0.082	0.0070
17.76	40.91	0.080	0.0042
17.80	41.03	0.066	0.0043
17.84	41.16	0.065	0.0080
17.88	41.30	0.068	0.0050
17.92	41.46	0.062	0.0101
17.96	41.52	0.068	0.0047
18.00	41.60	0.067	0.0045
18.04	41.69	0.065	0.0037
18.08	41.77	0.072	0.0026
18.12	41.85	0.076	0.0033
18.16	41.92	0.074	0.0031
18.20	41.99	0.076	0.0028
18.24	42.07	0.073	0.0022
18.28	42.14	0.069	0.0033
18.32	42.22	0.068	0.0025
18.36	42.30	0.069	0.0034
18.40	42.40	0.065	0.0053
18.44	42.59	0.063	0.0046
18.48	42.78	0.062	0.0038
18.52	43.03	0.061	0.0050
18.56	43.15	0.063	0.0027
18.60	43.27	0.074	0.0090
18.64	43.45	0.062	0.0050
18.68	43.46	0.086	0.0028
18.72	43.47	0.091	0.0039
18.76	43.48	0.089	0.0039
18.80	43.50	0.079	0.0034
18.84	43.62	0.084	0.0029
18.88	43.87	0.076	0.0022
18.92	44.09	0.072	0.0020
18.96	44.62	0.080	0.0036
19.00	44.67	0.082	0.0042
19.04	44.72	0.077	0.0051
19.08	44.86	0.079	0.0066
19.12	45.04	0.072	0.0053
19.16	45.23	0.077	0.0052
19.20	45.96	0.072	0.0028
19.24	46.34	0.073	0.0044
19.28	46.93	0.069	0.0060
19.32	46.93	0.075	0.0049
19.36	46.93	0.074	0.0025
19.40	46.93	0.063	0.0032
19.44	46.94	0.066	0.0044
19.48	46.94	0.067	0.0037
19.52	46.94	0.076	0.0037
19.56	46.95	0.079	0.0038
19.60	46.96	0.074	0.0044
19.64	46.96	0.084	0.0038
19.68	46.96	0.099	0.0038
19.72	47.09	0.081	0.0031
19.76	47.34	0.094	0.0023
19.80	47.51	0.083	0.0026
19.84	47.69	0.080	0.0020
19.88	47.87	0.086	0.0031
19.92	47.92	0.086	0.0032
19.96	48.02	0.088	0.0042
20.00	48.27	0.090	0.0034
20.04	48.49	0.074	0.0039
20.08	48.67	0.081	0.0052
20.12	48.94	0.098	0.0028
20.16	49.11	0.077	0.0021
20.20	49.21	0.062	0.0013
20.24	49.30	0.056	0.0016
20.28	49.39	0.057	0.0013
20.32	49.83	0.048	0.0023
20.36	50.12	0.062	0.0021
20.40	50.29	0.070	0.0024
20.44	50.51	0.083	0.0035
20.48	50.80	0.086	0.0033
20.52	51.06	0.082	0.0021
20.56	51.61	0.059	0.0017
20.64	52.11	0.057	0.0014
20.68	52.63	0.050	0.0022
20.72	53.74	0.053	0.0027
20.76	53.78	0.055	0.0026
20.80	53.87	0.056	0.0022
20.84	53.88	0.057	0.0016
20.88	53.90	0.054	0.0019
20.92	53.97	0.054	0.0026
20.96	54.15	0.056	0.0039
21.00	54.17	0.067	0.0013
21.08	54.18	0.070	0.0042
21.12	54.19	0.076	0.0020
21.20	54.28	0.086	0.0023
21.24	54.36	0.086	0.0018
21.28	54.42	0.073	0.0025
21.32	54.48	0.090	0.0000
21.36	54.71	0.090	0.0000
21.40	54.99	0.097	0.0000
21.48	55.62	0.064	0.0021
21.52	55.69	0.065	0.0017
21.60	55.74	0.090	0.0015
21.64	55.79	0.079	0.0029
21.68	55.87	0.069	0.0026
21.72	55.91	0.074	0.0018
21.76	55.94	0.069	0.0020
21.80	55.95	0.062	0.0030
21.84	55.95	0.063	0.0050
21.92	57.20	0.068	0.0023
21.96	57.41	0.061	0.0028
22.00	57.75	0.056	0.0007
22.08	58.41	0.057	0.0009
22.12	58.57	0.063	0.0008
22.16	58.60	0.067	0.0009
22.20	58.82	0.063	0.0008
22.24	58.99	0.068	0.0015
22.28	59.12	0.065	0.0010
22.32	59.27	0.063	0.0013
22.36	59.48	0.057	0.0007
22.40	59.66	0.059	0.0010
22.44	59.76	0.061	0.0011
22.48	59.88	0.065	0.0015
22.52	59.96	0.069	0.0009
22.56	60.01	0.065	0.0011
22.60	60.13	0.068	0.0016
22.64	60.34	0.075	0.0017
22.68	60.54	0.074	0.0024
22.72	60.67	0.062	0.0010
22.76	60.72	0.076	0.0022
22.80	60.76	0.081	0.0011
22.84	60.85	0.078	0.0016
22.88	61.00	0.080	0.0016
22.92	61.22	0.081	0.0125
22.96	61.74	0.091	0.0014
23.00	61.90	0.073	0.0014
23.04	62.06	0.089	0.0013
23.08	62.11	0.082	0.0016
23.12	62.27	0.090	0.0018