# Santa Barbara Basin Stable Isotope and Foraminiferal Assemblage Data to 735 ka
#-----------------------------------------------------------------------
#               World Data Center for Paleoclimatology, Boulder
#                                   and
#                      NOAA Paleoclimatology Program
#-----------------------------------------------------------------------
# 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: https://www.ncdc.noaa.gov/paleo/study/19762
# Online_Resource: http://www1.ncdc.noaa.gov/pub/data/paleo/paleocean/by_contributor/white2013/white2013-16jpc-bull.txt
#
# Archive: Paleoceanography
#
# Parameter_Keywords: oxygen isotopes, carbon isotopes, population abundance
#---------------------------------------
# Contribution_Date
#    Date: 2016-02-04
#---------------------------------------
# Title
#    Study_Name: Santa Barbara Basin Stable Isotope and Foraminiferal Assemblage Data to 735 ka
#---------------------------------------
# Investigators
#      Investigators: White, Sarah; Hill, Tessa; Kennett, James; Behl, Richard; Nicholson, Craig
#---------------------------------------
# Description_Notes_and_Keywords
#        Description: 
#         Provided Keywords: stadial, interstadial, glacial
#---------------------------------------
# Publication
# Authors: White, S.M., T.M. Hill, J.P. Kennett, R.J. Behl, and C. Nicholson
# Published_Date_or_Year: 2013
# Published_Title: Millennial-scale variability to 735 ka: High-resolution climate records from Santa Barbara Basin, CA 
# Journal_Name: Paleoceanography
# Volume: 28
# Issue: 
# Pages: 1-14
# Report Number: 
# DOI: 10.1002/palo.20022, 2013 
# Full_Citation: 
# Abstract: Determining the ultimate cause and effect of millennial-scale climate variability remains an outstanding problem in paleoceanography, partly due to the lack of high-resolution records predating the last glaciation. Recent cores from Santa Barbara Basin provide ~2500–5700 year “windows” of climate with ~10–50 year resolution. Ages for three cores, determined by seismic stratigraphic correlation, oxygen isotope stratigraphy, and biostratigraphy, date to ~293 ka (MIS 8), ~450 ka (MIS 12), and ~735 ka (MIS 18). These records sample the Late Pleistocene, during which the 100 kyr cycle strengthened and the magnitude of glacial-interglacial cyclicity increased. Thus, these records provide a test of the dependence of millennial-scale behavior on variations in glacial-interglacial cyclicity. The stable isotopic (d18O) composition of planktonic foraminifera shows millennial-scale variability in all three intervals, with similar characteristics (duration, cyclicity) to those previously documented during MIS 3 at this site. Stadial G. bulloides d18O values are 2.75–1.75‰ (average 2.25‰) and interstadial values are 1.75–0.5‰ (average 1‰), with rapid (decadal-scale) interstadial and stadial initiations of 1-2‰, as in MIS 3. Interstadials lasted ~250–1600 years and occurred every ~650–1900 years. Stadial paleotemperatures were 3.5–9.5°C and interstadial paleotemperatures were 7.5–13°C. Upwelling, evidenced by planktonic foraminiferal assemblages and d13C, increased during interstadials, similar to MIS 3; high productivity during some stadials was reminiscent of the Last Glacial Maximum. This study builds upon previous records in showing that millennial-scale shifts were an inherent feature of Northern Hemisphere glacial climates since 735 ka, and they remained remarkably constant in the details of their amplitude, cyclicity, and temperature variability.
#---------------------------------------
# Funding_Agency
#    Funding_Agency_Name: US National Science Foundation
#    Grant: OCE-0825322, OCE-0350573
#---------------------------------------
# Site Information
# Site_Name: MV0508-16JPC
# Location: Santa Barbara Basin
# Country: USA
# Northernmost_Latitude: 34.25
# Southernmost_Latitude: 34.25
# Easternmost_Longitude: -119.77
# Westernmost_Longitude: -119.77
# Elevation: 191
#---------------------------------------
# Data_Collection
#   Collection_Name: 16JPC bulloides White13
#   First_Year: 452500
#   Last_Year: 448500
#   Time_Unit: cal yr BP
#   Core_Length: 460 cm
#   Notes: Ages are approximate - see White et al 2013 and supplementary online info for details. Precision of N. pachyderma is ±0.04‰ for C isotopes and ±0.06‰ for O isotopes  (performed at UC Davis); precision of U. peregrina and G. bulloides is ±0.09‰ for both isotopes  (performed at UC Santa Barbara). Foraminifera counts based on sample splits of >300 specimens.
#---------------------------------------
# Chronology_Information 
#   Chronology: 
# Cores were recovered from a submarine anticline that exposes pre-modern strata. Individual cores were placed in a chronostratigraphic framework using seismic stratigraphy in conjunction with well logs and seafloor outcrops; ages were refined using oxygen isotope stratigraphy, biostratigraphic datums, and a radiometrically dated ash layer. The sedimentation rate was used to estimate the length of time captured by each core. See White et al 2013 (including supplementary online info) for details.
#---------------------------------------
# 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)
## core_name	core name,,,,,,,,C
## CoreSect	Core Section,,,,,,,,C
## depth_top	depth,,,cm,,Paleoceanography,top of sample,,N
## d18Og.bull	delta 18O,Globigerina bulloides,,per mil PDB,,Paleoceanography,,isotope ratio mass spectrometry,N
## d13Cg.bull	delta 13C,Globigerina bulloides,,per mil PDB,,Paleoceanography,,isotope ratio mass spectrometry,N
#------------------------
# Data
# Data lines follow (have no #)
# Data line format - tab-delimited text, variable short name as header
# Missing Value: NaN
core_name	CoreSect	depth_top	d18Og.bull	d13Cg.bull	
16HR	1	0	2.369	-2.176	
16HR	1	1	2.553	-3.195	
16JPC	1	4	1.903	-1.826	
16HR	1	5	2.468	-1.612	
16HR	1	6	2.717	-1.645	
16HR	1	7	3.121	-1.527	
16HR	1	8	3.013	-1.523	
16HR	1	9	2.749	-1.499	
16HR	1	10	2.82	-1.164	
16HR	1	11	2.782	-1.16	
16HR	1	12	2.969	-1.674	
16HR	1	13	2.643	-1.957	
16JPC	1	14	2.686	-1.852	
16HR	1	16	2.571	-1.622	
16HR	1	17	2.607	-1.246	
16HR	1	18	2.644	-1.284	
16JPC	1	19	2.679	-1.537	
16HR	1	21	2.525	-1.727	
16HR	1	22	2.422	-1.583	
16HR	1	23	2.444	-1.777	
16JPC	1	24	2.506	-1.677	
16HR	1	26	2.308	-1.814	
16HR	1	27	2.365	-1.502	
16HR	1	28	2.251	-1.418	
16JPC	1	29	2.432	-1.57	
16HR	1	33	1.936	-1.353	
16JPC	1	34	1.949	-2.24	
16HR	1	36	2.251	-1.642	
16HR	1	37	2.118	-1.784	
16HR	1	38	2.134	-2.251	
16JPC	1	39	1.832	-2.407	
16HR	1	41	1.798	-2.244	
16HR	1	42	0.94	-2.576	
16HR	1	43	1.138	-2.155	
16JPC	1	44	2.44	-2.571	
16HR	1	46	2.083	-2.604	
16HR	1	47	2.332	-2.5	
16HR	1	48	2.064	-2.301	
16JPC	1	49.5	2.269	-2.082	
16HR	1	51	1.709	-1.826	
16HR	1	52	1.95	-1.354	
16JPC	1	54	2.042	-2.396	
16HR	1	56	1.773	-1.941	
16HR	1	57	1.797	-2.24	
16HR	1	58	1.87	-2.65	
16HR	1	59	1.857	-2.265	
16HR	1	60	1.878	-2.223	
16HR	1	61	1.975	-1.575	
16HR	1	62	1.906	-1.685	
16HR	1	63	2.146	-1.706	
16JPC	1	64	2.338	-3.182	
16HR	1	66	2.204	-2.161	
16HR	1	67	2.032	-2.328	
16HR	1	68	1.9	-2.293	
16JPC	1	69	1.644	-2.605	
16HR	1	71	1.63	-3.001	
16HR	1	72	1.784	-2.603	
16HR	1	73	1.637	-2.896	
16JPC	1	74	1.871	-2.882	
16HR	1	76	1.676	-3.493	
16HR	1	77	1.826	-3.27	
16HR	1	78	1.577	-2.913	
16HR	1	79	1.85	-2.703	
16HR	1	80	1.506	-2.59	
16HR	2	81	1.426	-2.65	
16HR	2	82	1.144	-2.447	
16HR	2	83	1.375	-2.197	
16HR	2	84	1.323	-1.646	
16JPC	2	85	1.077	-1.889	
16HR	2	87	1.073	-2.127	
16HR	2	88	1.211	-2.257	
16HR	2	89	1.372	-2.211	
16JPC	2	90	1.664	-1.974	
16HR	2	92	1.563	-3.166	
16HR	2	93	1.961	-4.185	
16HR	2	94	1.808	-4.27	
16JPC	2	95	2.089	-3.454	
16HR	2	97	1.573	-2.229	
16HR	2	98	1.155	-2.469	
16HR	2	99	1.137	-2.647	
16JPC	2	100	1.694	-3.461	
16HR	2	102	1.608	-3.204	
16HR	2	103	1.382	-3.323	
16HR	2	104	1.627	-2.865	
16JPC	2	105	1.669	-3.06	
16HR	2	107	1.821	-4.298	
16HR	2	108	2.162	-3.813	
16HR	2	109	2.059	-3.444	
16JPC	2	110	1.681	-3.82	
16HR	2	112	1.664	-2.113	
16HR	2	113	1.952	-2.359	
16HR	2	114	1.691	-2.133	
16HR	2	115	1.944	-1.87	
16HR	2	116	2.102	-2.058	
16HR	2	117	1.837	-2.065	
16HR	2	118	2.004	-1.754	
16HR	2	119	1.849	-1.757	
16JPC	2	120	2.048	-1.75	
16HR	2	122	1.742	-1.611	
16HR	2	123	1.718	-1.56	
16HR	2	124	1.621	-1.916	
16JPC	2	125	1.997	-1.772	
16HR	2	127	1.826	-1.479	
16HR	2	128	1.663	-1.193	
16HR	2	129	1.731	-1.265	
16JPC	2	130	1.5	-1.46	
16HR	2	132	1.515	-1.513	
16HR	2	133	1.416	-1.421	
16HR	2	134	1.445	-1.396	
16JPC	2	135	1.808	-1.694	
16HR	2	137	1.673	-1.637	
16HR	2	138	1.701	-1.469	
16HR	2	139	1.931	-1.39	
16JPC	2	140	2.142	-1.569	
16HR	2	142	2.229	-1.244	
16HR	2	143	2.354	-1.043	
16HR	2	144	2.185	-1.32	
16JPC	2	145	2.267	-1.759	
16HR	2	147	1.613	-1.48	
16HR	2	148	1.839	-1.267	
16HR	2	149	1.955	-1.481	
16JPC	2	150	2.064	-1.675	
16HR	2	152	1.587	-1.464	
16HR	2	153	1.867	-1.373	
16HR	2	154	1.474	-1.876	
16JPC	2	155	2.151	-1.468	
16HR	2	157	1.645	-1.614	
16HR	2	158	1.686	-1.947	
16HR	2	159	1.846	-1.93	
16HR	2	160	1.368	-1.404	
16HR	2	161	1.276	-1.593	
16HR	2	162	1.254	-1.952	
16HR	2	163	1.095	-1.617	
16HR	2	164	1.253	-1.711	
16JPC	2	165	0.859	-1.91	
16HR	2	167	1.282	-2.309	
16HR	2	168	1.229	-1.902	
16HR	2	169	1.078	-1.593	
16JPC	2	170	1.577	-1.724	
16HR	2	172	0.872	-1.575	
16HR	2	173	0.959	-2.369	
16HR	2	174	0.9	-2.606	
16JPC	2	175	1.424	-2.575	
16HR	2	177	1.311	-1.786	
16HR	2	178	1.311	-1.668	
16HR	2	179	1.089	-1.368	
16JPC	2	180	1.098	-1.545	
16HR	2	182	0.873	-1.627	
16HR	2	183	0.724	-1.203	
16HR	2	184	1.19	-1.89	
16JPC	2	185	1.377	-2.157	
16HR	2	187	0.892	-1.98	
16HR	2	188	0.933	-1.651	
16HR	2	189	1.077	-2.514	
16JPC	2	190	1.281	-2.163	
16HR	2	192	1.177	-2.579	
16HR	2	193	1.396	-2.087	
16HR	2	194	2.154	-1.557	
16JPC	2	195	2.305	-1.464	
16HR	2	197	2.132	-1.314	
16HR	2	198	2.191	-1.121	
16HR	2	199	2.252	-1.141	
16JPC	2	200	2.321	-1.403	
16HR	2	202	2.169	-0.951	
16HR	2	203	1.276	-1.43	
16HR	2	204	1.052	-1.636	
16JPC	2	205	2.175	-1.333	
16HR	2	207	2.222	-1.183	
16HR	2	208	2.205	-1.141	
16HR	2	209	2.337	-1.263	
16HR	2	210	2.269	-1.216	
16HR	2	211	2.297	-1.25	
16HR	2	212	2.426	-1.05	
16HR	2	213	2.092	-1.006	
16HR	2	214	2.291	-1.113	
16JPC	2	215	2.474	-1.368	
16HR	2	217	2.09	-1.139	
16HR	2	218	2.122	-1.052	
16HR	2	219	2.445	-1.15	
16JPC	2	220	2.226	-1.38	
16HR	2	222	2.208	-1.045	
16HR	2	223	2.256	-1.059	
16HR	2	224	2.126	-1.097	
16JPC	2	225	2.002	-1.203	
16HR	2	227	2.12	-1.114	
16HR	2	228	2.236	-0.658	
16HR	2	229	1.874	-1.015	
16JPC	2	230	2.192	-1.084	
16HR	2	232	2.115	-1.039	
16HR	2	233	2.191	-1.1	
16HR	2	234	1.925	-1.128	
16HR	3	235	1.863	-1.174	
16JPC	3	235	NaN	NaN	
16HR	3	236	1.909	-1.132	
16HR	3	237	2.113	-1.034	
16HR	3	238	2.065	-1.225	
16HR	3	239	1.912	-1.096	
16JPC	3	240	2.07	-1.226	
16HR	3	242	1.98	-1.155	
16HR	3	243	2.026	-0.787	
16HR	3	244	1.86	-0.983	
16JPC	3	245	2.148	-1.493	
16JPC	3	250	NaN	NaN	
16HR	3	253	NaN	NaN	
16HR	3	254	NaN	NaN	
16JPC	3	255	NaN	NaN	
16HR	3	260	NaN	NaN	
16HR	3	261	1.345	-1.152	
16HR	3	262	0.659	-1.538	
16HR	3	263	0.759	-1.628	
16HR	3	264	0.424	-1.72	
16JPC	3	265	0.831	-1.622	
16JPC	3	270	1.612	-1.142	
16HR	3	272	1.766	-0.881	
16HR	3	273	1.222	-1.17	
16HR	3	274	1.673	-0.775	
16JPC	3	275	1.938	-1.027	
16HR	3	277	2.057	-0.555	
16HR	3	278	2.066	-0.36	
16HR	3	279	2.273	-0.72	
16JPC	3	280	2.072	-0.66	
16HR	3	282	2.092	-0.663	
16HR	3	283	2.013	-0.667	
16HR	3	284	2.081	-0.508	
16JPC	3	285	2.195	-0.785	
16HR	3	287	2.232	-0.64	
16HR	3	288	2.194	-0.69	
16HR	3	289	2.098	-0.862	
16HR	3	290	2.137	-0.646	
16HR	3	291	1.966	-0.784	
16HR	3	292	2.227	-0.869	
16HR	3	293	2.11	-1.091	
16HR	3	294	2.509	-2.363	
16JPC	3	295	2.339	-2.323	
16JPC	3	300	NaN	NaN