# Subtropical North Atlantic Radiocarbon Data during the Last Glaciation
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#               World Data Service for Paleoclimatology, Boulder
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#                      NOAA Paleoclimatology Program
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# Template Version 4.0
# Encoding: UTF-8
# NOTE: Please cite original publication, online resource and date accessed when using this data.
# If there is no publication information, please cite Investigator, study title, NOAA Landing Page URL, and date accessed.
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# Description/Documentation lines begin with '#' followed by a space
# Data lines have no '#'
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# NOAA_Landing_Page: https://www.ncei.noaa.gov/access/paleo-search/study/33352
#   Landing_Page_Description: NOAA Landing Page of this file's parent study, which includes all study metadata.
#
# Study_Level_JSON_Metadata: https://www.ncei.noaa.gov/pub/data/metadata/published/paleo/json/noaa-ocean-33352.json
#   Study_Level_JSON_Description: JSON metadata of this data file's parent study, which includes all study metadata.
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# Data_Type: Paleoceanography
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# Dataset_DOI: 10.25921/tgh0-wx49
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# Science_Keywords: 
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# Resource_Links
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# Data_Download_Resource: https://www.ncei.noaa.gov/pub/data/paleo/contributions_by_author/hill2021/hill2021-02gc-c14.txt
#   Data_Download_Description: NOAA Template File; 02GC Radiocarbon Data
#
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# Contribution_Date
#   Date: 2021-05-07
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# File_Last_Modified_Date
#   Date: 2025-06-02
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# Title
#   Study_Name: Subtropical North Atlantic Radiocarbon Data during the Last Glaciation
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# Investigators
#   Investigators: Hill, Jenna C.
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# Description_Notes_and_Keywords
#   Description: 
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# Publication
#   Authors: Condron, A. and Hill, J.C.
#   Published_Date_or_Year: 2021
#   Published_Title: Timing of iceberg scours and massive ice-rafting events in the subtropical North Atlantic
#   Journal_Name: Nature Communications
#   Volume: 12
#   Edition: 
#   Issue: 
#   Pages: 
#   Report_Number: 3668
#   DOI: 10.1038/s41467-021-23924-0
#   Online_Resource: 
#   Full_Citation: 
#   Abstract: High resolution seafloor mapping shows extraordinary evidence that massive (>300 m thick) icebergs once drifted >5,000 km south along the eastern United States, with >700 iceberg scours now identified south of Cape Hatteras. Here we report on sediment cores collected from several buried scours that show multiple plow marks align with Heinrich Event 3 (H3), ~31,000 years ago. Numerical glacial iceberg simulations indicate that the transport of icebergs to these sites occurs during massive, but short-lived, periods of elevated meltwater discharge. Transport of icebergs to the subtropics, away from deep water formation sites, may explain why H3 was associated with only a modest increase in ice-rafting across the subpolar North Atlantic, and implies a complex relationship between freshwater forcing and climate change. Stratigraphy from subbottom data across the scour marks shows there are additional features that are both older and younger, and may align with other periods of elevated meltwater discharge.
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# Funding_Agency
#   Funding_Agency_Name: US National Science Foundation
#   Grant: 1558994
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# Site_Information
#   Site_Name: SH1710-02GC
#   Location: North Atlantic Ocean
#   Northernmost_Latitude: 32.776568
#   Southernmost_Latitude: 32.776568
#   Easternmost_Longitude: -78.084367
#   Westernmost_Longitude: -78.084367
#   Elevation_m: -201.7
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# Data_Collection
#   Collection_Name: 02GC Radiocarbon Hill2021
#   First_Year: 42300
#   Last_Year: 24600
#   Time_Unit: 14C yr BP
#   Core_Length_m: 2.483
#   Parameter_Keywords: carbon isotopes, age control
#   Notes: 
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# Chronology_Information 
#   Chronology: Radiocarbon
#   Chronology_Download_Resource: https://www.ncei.noaa.gov/pub/data/paleo/templates/noaa-wds-paleo-14c-terms.csv
#     Chronology_Download_Description: Radiocarbon terms and definitions.
#   Chronology_Notes:
#   Rejection_Rationale:
#   Reservoir_Method:
#   Calibration_Method: OxCal 4.3
#   Age_Model_Method:
#   Missing_Values: 
#   Chronology_Table:
# lab_code	depth_end_cm	depth_start_cm	material_dated	age_14C_BP1950	age_14C_1s_yr	date_type	calib_curve	age_calib_pos2s_BP1950	age_calib_neg2s_BP1950	age_calib_BP1950	notes
# SH1710-02GC-115	114.5	115.5	G. ruber	24600	150	14 AMS	Marine13	28231	25922	27872	
# SH1710-02GC-116	115.5	116.5	G. ruber	25900	170	14 AMS	Marine13	29612	27181	29138	
# SH1710-02GC-133	132.5	133.5	G. ruber	24000	140	14 AMS	Marine13	27717	25532	27481	
# SH1710-02GC-135	134.5	135.5	G. ruber	25100	160	14 AMS	Marine13	28734	26408	28363	
# SH1710-02GC-142	141.5	142.5	G. ruber	26500	180	14 AMS	Marine13	30393	27851	29808	
# SH1710-02GC-145	144.5	145.5	G. ruber	29000	250	14 AMS	Marine13	32624	29802	31766	
# SH1710-02GC-160	159.5	160.5	G. ruber	28500	130	14 AMS	Marine13	31846	29498	31449	
# SH1710-02GC-162	161.5	162.5	G. ruber	33400	230	14 AMS	Marine13	37100	34423	36381	
# SH1710-02GC-165	164.5	165.5	G. ruber	42300	2800	14 AMS	Marine13	45896	39598	42765	
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# Variables
# PaST_Thesaurus_Download_Resource: https://www.ncei.noaa.gov/access/paleo-search/skos/past-thesaurus.rdf
#   PaST_Thesaurus_Download_Description: Paleoenvironmental Standard Terms (PaST) Thesaurus terms, definitions, and relationships in SKOS format.
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# Data variables follow that are preceded by "##" in columns one and two.
# Variables list, one per line, shortname-tab-var components: what, material, error, units, seasonality, data type, detail, method, C or N for Character or Numeric data)
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# Data:
# Data lines follow (have no #)
# Data line format - tab-delimited text, variable short name as header
# Missing_Values: 
Data is contained in the Chronology section above