Citation:

j.orggeochem.2010.10.012

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Abstract:

TEXL86 and TEXH86 are organic palaeothermometers based on the lipids of Group 1 Crenarchaeota, recently proposed as a modified version of the original TEX86 index, but with significantly improved geographical coverage. Since few data from the global core top calibration are from the Pacific, this study was carried out to assess whether the global core top calibration is regionally biased or not. The result of principal components analysis of the fractional abundance of GDGTs, an analysis of variance (ANOVA) and the comparison of the residuals of TEXH 86 derived sea surface temperature (SST) estimates of the Pacific subset with that of the global data set suggest that the Pacific subset has a similar TEXH 86-SST relationship with the global data set. However, the regression line through the Pacific data and an ANOVA on the residuals of TEXL 86 derived SST estimates suggest otherwise. The contradictory findings are likely to stem from the large scatter in the Pacific TEXL 86 values in the mid temperature range. While regionality does not seem to exert a strong bias on TEXL 86 and TEXH 86 calibration, it appears that there is a strong need to resolve the large scatter in the global data set, especially in the mid and high latitudes, in order to improve the calibration for a better SST estimation.

Coverage:

Median Latitude: -25.453335 * Median Longitude: -146.140000 * South-bound Latitude: -67.216700 * West-bound Longitude: 140.000000 * North-bound Latitude: 8.033300 * East-bound Longitude: -94.916700

Minimum DEPTH, sediment/rock: 0.01 m * Maximum DEPTH, sediment/rock: 0.01 m

Event(s):

HY03 * Latitude: 8.033300 * Longitude: -94.950000 * Elevation: -3661.0 m * Location: Pacific Ocean * Campaign: * Basis: Hakuho-Maru * Method/Device: Gravity corer (GC)

HY04 * Latitude: 4.033300 * Longitude: -95.050000 * Elevation: -3563.0 m * Location: Pacific Ocean * Campaign: * Basis: Hakuho-Maru * Method/Device: Gravity corer (GC)

HY05 * Latitude: 2.016700 * Longitude: -95.500000 * Elevation: -2886.0 m * Location: Pacific Ocean * Campaign: * Basis: Hakuho-Maru * Method/Device: Gravity corer (GC)

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Comment
1	Event label	Event
2	Campaign of event	Campaign
3	Latitude of event	Latitude
4	Longitude of event	Longitude
5	DEPTH, sediment/rock	Depth sed	m		Geocode
6	Temperature, water, interpolated	Temp interp	°C	Ho, Sze Ling
7	Elevation of event	Elevation	m
8	Acyclic glycerol dialkyl glycerol tetraether, fractional abundance	GDGT-0		Ho, Sze Ling
9	Monocyclic glycerol dialkyl glycerol tetraether, fractional abundance	GDGT-1		Ho, Sze Ling
10	Dicyclic glycerol dialkyl glycerol tetraether, fractional abundance	GDGT-2		Ho, Sze Ling
11	Tricyclic glycerol dialkyl glycerol tetraether, fractional abundance	GDGT-3		Ho, Sze Ling
12	Crenarchaeol, fractional abundance	Cren		Ho, Sze Ling
13	Crenarchaeol regio-isomer, fractional abundance	Cren'		Ho, Sze Ling
14	Tetraether index of 86 carbon atoms	TEX86		Ho, Sze Ling	L
15	Tetraether index of 86 carbon atoms	TEX86		Ho, Sze Ling	H

License:

Creative Commons Attribution 3.0 Unported (CC-BY-3.0)

Size:

180 data points

Data

Download dataset as tab-delimited text — use the following character encoding:

1 Event	2 Campaign	3 Latitude	4 Longitude	5 Depth sed [m]	6 Temp interp [°C]	7 Elevation [m]	8 GDGT-0	9 GDGT-1	10 GDGT-2	11 GDGT-3	12 Cren	13 Cren'	14 TEX86 (L)	15 TEX86 (H)
SX02	KH-04-5	-0.667	157.517	0.01	29.400	-2098	0.230	0.045	0.067	0.007	0.603	0.047	-0.253	-0.138
SX09	KH-04-5	-65.150	174.200	0.01	-0.100	-3393	0.543	0.031	0.009	0.002	0.410	0.005	-0.668	-0.470
SX10	KH-04-5	-67.217	-172.650	0.01	-0.600	-3884	0.548	0.041	0.012	0.002	0.392	0.005	-0.666	-0.501
SX14	KH-04-5	-50.017	-170.000	0.01	10.300	-5388	0.452	0.049	0.025	0.002	0.462	0.009	-0.477	-0.365
SX15	KH-04-5	-45.000	-170.000	0.01	12.900	-5165	0.419	0.055	0.033	0.003	0.479	0.011	-0.433	-0.335
SX16	KH-04-5	-43.183	-171.000	0.01	14.100	-2313	0.384	0.059	0.047	0.004	0.494	0.013	-0.370	-0.287
SX17	KH-04-5	-40.000	-170.000	0.01	15.300	-4635	0.388	0.056	0.043	0.003	0.494	0.015	-0.375	-0.281
KH-01-3-01	KH-01-3	0.000	-160.000	0.01	27.400	-5142	0.251	0.051	0.063	0.006	0.586	0.042	-0.281	-0.163
KH-01-3-08	KH-01-3	-35.000	-160.000	0.01	17.500	-5098	0.365	0.058	0.051	0.003	0.498	0.024	-0.343	-0.239
KH-01-3-10	KH-01-3	-47.000	-160.000	0.01	11.200	-5118	0.426	0.053	0.028	0.003	0.479	0.011	-0.478	-0.359
KH-01-3-17	KH-01-3	-60.000	140.000	0.01	1.000	-4483	0.540	0.042	0.014	0.002	0.396	0.007	-0.619	-0.452
KH-01-3-19	KH-01-3	-50.000	140.000	0.01	7.900	-3755	0.432	0.046	0.025	0.003	0.484	0.011	-0.475	-0.346
HY03	KH-03-1	8.033	-94.950	0.01	27.600	-3661	0.340	0.063	0.059	0.007	0.506	0.026	-0.339	-0.226
HY04	KH-03-1	4.033	-95.050	0.01	27.200	-3563	0.345	0.067	0.063	0.006	0.490	0.031	-0.333	-0.224
HY05	KH-03-1	2.017	-95.500	0.01	26.100	-2886	0.340	0.062	0.061	0.005	0.503	0.029	-0.326	-0.220
HY06	KH-03-1	0.017	-95.433	0.01	23.900	-3246	0.224	0.060	0.066	0.007	0.598	0.045	-0.303	-0.179
HY07	KH-03-1	-2.033	-95.000	0.01	23.200	-3331	0.342	0.066	0.059	0.006	0.499	0.029	-0.346	-0.232
HY08	KH-03-1	-3.967	-95.000	0.01	23.900	-3657	0.359	0.068	0.062	0.004	0.480	0.026	-0.336	-0.240
HY08B	KH-03-1	-5.950	-94.917	0.01	24.400	-3852	0.369	0.062	0.055	0.006	0.482	0.027	-0.348	-0.232
HY09	KH-03-1	-7.983	-95.017	0.01	24.300	-3910	0.344	0.071	0.069	0.004	0.481	0.032	-0.318	-0.223