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McClymont, Erin L; Antoni, Rosell-Melé; Haug, Gerald H; Lloyd, Jerry M (2020): Alkenone data from ODP Hole 162-983C [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.922836

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Abstract:
Alkenone data from ODP Site 983 (UK37, UK'37 and %C37:4) spanning the 0.5-1.5 Ma interval, used to reconstruct sea surface temperatures and polar water mass expansion during the mid-Pleistocene transition (MPT). Past surface ocean circulation changes associated with the mid‐Pleistocene transition, 0.9-0.6 Ma, were reconstructed in the northern North Atlantic (ODP 983) using proxies for subarctic/subpolar water mass distributions (%C37:4 alkenone) and sea surface temperature (UK37, UK'37). A secular expansion of subarctic waters occurred from ∼1.15 Ma, spanning both glacial and interglacial intervals. After 0.9 Ma, low %C37:4 at Site 983 records a northward retreat of subarctic waters during interglacials in the Atlantic, while continued high glacial %C37:4 indicate extensive subarctic waters during glacial maxima associated with the development of the larger late Pleistocene ice sheets. It is proposed that the expansion of subarctic waters between 1.15 and 0.9 Ma exerted negative feedbacks to the moisture supply to the ice sheet source regions and may account for the apparent delayed ice sheet response to atmosphere‐ocean circulation changes associated with the mid‐Pleistocene transition that began as early as 1.2 Ma.
Keyword(s):
Alkenone; mid-Pleistocene transition; SST
Related to:
McClymont, Erin L; Antoni, Rosell-Melé; Haug, Gerald H; Lloyd, Jerry M (2008): Expansion of subarctic water masses in the North Atlantic and Pacific oceans and implications for mid-Pleistocene ice sheet growth. Paleoceanography, 23(4), PA4214, https://doi.org/10.1029/2008PA001622
Coverage:
Median Latitude: 60.403500 * Median Longitude: -23.640667 * South-bound Latitude: 60.403300 * West-bound Longitude: -23.640800 * North-bound Latitude: 60.403600 * East-bound Longitude: -23.640600
Date/Time Start: 1995-07-21T11:58:00 * Date/Time End: 1995-07-24T02:00:00
Minimum Elevation: -1985.0 m * Maximum Elevation: -1983.0 m
Event(s):
162-983A  * Latitude: 60.403300 * Longitude: -23.640600 * Date/Time Start: 1995-07-21T11:58:00 * Date/Time End: 1995-07-22T09:29:00 * Elevation: -1983.0 m * Penetration: 254.4 m * Recovery: 264.42 m * Location: South Atlantic Ocean * Campaign: Leg162 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 27 cores; 254.4 m cored; 0 m drilled; 103.9 % recovery
162-983B  * Latitude: 60.403600 * Longitude: -23.640600 * Date/Time Start: 1995-07-22T09:29:00 * Date/Time End: 1995-07-23T03:09:00 * Elevation: -1983.0 m * Penetration: 251.7 m * Recovery: 261.83 m * Location: South Atlantic Ocean * Campaign: Leg162 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 27 cores; 251.7 m cored; 0 m drilled; 104 % recovery
162-983C  * Latitude: 60.403600 * Longitude: -23.640800 * Date/Time Start: 1995-07-23T03:09:00 * Date/Time End: 1995-07-24T02:00:00 * Elevation: -1985.0 m * Penetration: 260.4 m * Recovery: 271.75 m * Location: South Atlantic Ocean * Campaign: Leg162 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 28 cores; 260.4 m cored; 0 m drilled; 104.4 % recovery
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
Event labelEventMcClymont, Erin L
Sample code/labelSample labelMcClymont, Erin LDSDP/ODP/IODP sample designation
Sample commentSample commentMcClymont, Erin L
Section Top in meters composite depthTopmcdMcClymont, Erin L
AGEAgeka BPMcClymont, Erin LAge, benthic δ18O stratigraphyGeocode
Alkenone, unsaturation index UK37UK37McClymont, Erin LCalculated from UK37
Alkenone, unsaturation index UK'37UK'37McClymont, Erin LCalculated from UK'37
Sea surface temperatureSST°CMcClymont, Erin LSST, from UK37
Sea surface temperatureSST°CMcClymont, Erin LSST, from UK'37
10 Alkenone, C37:4C37:4%McClymont, Erin L
Size:
1552 data points

Data

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


Event

Sample label
(DSDP/ODP/IODP sample designation)

Sample comment

Top [mcd]

Age [ka BP]
(Age, benthic δ18O stratigraphy)

UK37
(Calculated from UK37)

UK'37
(Calculated from UK'37)

SST [°C]
(SST, from UK37)

SST [°C]
(SST, from UK'37)
10 
C37:4 [%]
162-983C 162-983C-6H-6,36-37Working half57.69493.980.0560.290-1.67.518.2
162-983C162-983C-6H-6,116-117Working half58.49500.410.4830.49816.313.71.0
162-983C162-983C-6H-7,48-49Working half59.28506.780.2710.3007.47.82.3
162-983B 162-983B-7H-2,136-137Working half60.07512.660.2360.3116.08.15.7
162-983C162-983C-7H-1,32-33Working half60.86518.520.5250.53018.014.70.3
162-983C162-983C-7H-1,112-113Working half61.65524.380.3060.4028.910.96.9
162-983C162-983C-7H-2,24-25Working half62.29529.790.3110.3879.110.45.5
162-983C162-983C-7H-2,88-89Working half62.92532.830.2170.2885.27.45.5
162-983C162-983C-7H-3,0-1Working half63.55535.870.2770.3137.78.22.7
162-983C162-983C-7H-3,64-65Working half64.19538.950.2620.3427.09.06.0
162-983C162-983C-7H-3,123-129Working half64.82541.980.0720.257-0.96.514.7
162-983C162-983C-7H-4,40-41Working half65.45545.000.2830.3767.910.16.7
162-983C162-983C-7H-4,104-105Working half66.09546.370.2400.3006.17.84.6
162-983C162-983C-7H-5,80-81Working half67.35563.820.3700.40411.610.92.4
162-983C162-983C-7H-5,144-145Working half67.99570.280.4170.43413.511.81.2
162-983C162-983C-7H-6,56-57Working half68.62574.800.3900.41312.411.21.6
162-983C162-983C-7H-6,120-121Working half69.26581.020.3350.37410.110.02.9
162-983C162-983C-7H-7,36-37Working half69.90588.230.3400.35110.39.30.9
162-983C162-983C-7H-CC,28-29Working half70.53595.320.4420.44214.512.00.0
162-983B162-983B-8H-3,44-45Working half71.27602.970.3480.35110.69.30.2
162-983C162-983C-8H-1,60-61Working half71.80607.230.4020.42212.911.51.5
162-983C162-983C-8H-1,124-125Working half72.44610.270.3950.39912.610.70.3
162-983C162-983C-8H-2,56-57Working half73.27613.150.3140.3349.28.81.5
162-983C162-983C-8H-2,140-141Working half74.11615.400.3720.37211.69.90.0
162-983C162-983C-8H-3,72-73Working half74.94632.000.1750.3713.49.914.3
162-983C162-983C-8H-3,128-129Working half75.48635.570.3420.44010.412.06.8
162-983C162-983C-8H-4,32-33Working half76.03640.360.3160.4449.312.18.9
162-983C162-983C-8H-4,88-89Working half76.57645.060.3190.3649.49.73.3
162-983C162-983C-8H-4,140-141Working half77.12649.860.2920.4028.310.87.8
162-983C162-983C-8H-5,44-45Working half77.66654.550.4260.44213.912.11.1
162-983C162-983C-8H-5,100-101Working half78.20659.250.3060.3878.910.45.8
162-983C162-983C-8H-6,4-5Working half78.74663.960.3070.3778.910.15.1
162-983C162-983C-8H-6,56-57Working half79.29668.720.2080.3504.89.310.6
162-983C162-983C-8H-6,112-113Working half79.83673.600.2360.2365.95.80.0
162-983C162-983C-8H-7,16-17Working half80.38678.550.2340.3525.99.38.8
162-983C162-983C-8H-CC,8-9Working half80.92682.950.3690.38811.510.41.3
162-983B162-983B-9H-3,8-9Working half81.46688.380.2980.3508.69.33.8
162-983C162-983C-9H-1,16-17Working half82.01691.680.2720.3297.58.64.3
162-983C162-983C-9H-1,72-73Working half82.57695.040.4150.42613.411.60.8
162-983C162-983C-9H-1,132-133Working half83.14698.460.4260.43913.912.00.9
162-983C162-983C-9H-2,36-37Working half83.71701.880.4800.49116.113.50.7
162-983C162-983C-9H-2,96-97Working half84.29705.150.3070.3468.99.22.9
162-983C162-983C-9H-3,45-46Working half85.34721.040.2930.3598.39.64.9
162-983C162-983C-9H-3,100-101Working half85.86727.830.3040.3968.810.76.6
162-983C162-983C-9H-4,4-5Working half86.40734.870.2320.3515.89.38.8
162-983C162-983C-9H-4,45-46Working half86.84740.610.4170.48113.513.24.3
162-983C162-983C-9H-4,68-69Working half87.04743.220.4380.45814.412.61.4
162-983C162-983C-9H-4,92-93Working half87.28746.350.3520.43310.811.85.6
162-983C162-983C-9H-4,116-117Working half87.52749.480.1850.3383.88.911.5
162-983C162-983C-9H-5,32-33Working half88.18754.160.3780.42511.911.53.3
162-983B162-983B-10H-1,12-13Working half88.90758.990.5550.55519.215.50.0
162-983C162-983C-9H-6,28-29Working half89.62763.820.4740.49215.913.61.2
162-983B162-983B-10H-2,4-5Working half90.33768.580.4480.45614.812.50.5
162-983B162-983B-10H-2,74-75Working half91.03773.270.2630.3477.19.26.2
162-983B162-983B-10H-2,144-145Working half91.73777.98
162-983B162-983B-10H-3,64-65Working half92.43782.360.3410.38710.310.43.3
162-983C162-983C-10H-2,62-63Working half93.15789.18
162-983C162-983C-10H-2,97-98Working half93.50796.080.0960.3460.19.218.6
162-983C162-983C-10H-2-137Working half93.90799.730.1050.3240.58.516.5
162-983C162-983C-10H-3,17-18Working half94.20801.800.3230.3719.69.93.5
162-983C162-983C-10H-3,52-53Working half94.55804.210.1740.3213.48.411.1
162-983C162-983C-10H-3,112-113Working half95.15808.360.3670.39511.410.62.0
162-983C162-983C-10H-4,34-35Working half95.90813.530.3120.3609.19.63.6
162-983C162-983C-10H-4,107-108Working half96.60818.360.3080.3579.09.53.6
162-983C162-983C-10H-5,42-43Working half97.45824.220.3360.49510.113.710.6
162-983C162-983C-10H-5,117-118Working half98.20829.40
162-983C162-983C-10H-6,52-53Working half99.05835.260.0630.310-1.28.118.8
162-983C162-983C-10H-6,130-131Working half99.85840.780.3500.41410.711.24.5
162-983B162-983B-11H-2,20-21Working half100.65846.310.2350.3545.99.48.8
162-983B162-983B-11H-2,107-108Working half101.49851.970.3210.3759.510.04.0
162-983B162-983B-11H-3,43-44Working half102.35859.040.3980.39812.710.70.0
162-983B162-983B-11H-3,113-114Working half103.05867.600.3440.36410.59.71.4
162-983B162-983B-11H-3143-144Working half103.35873.29
162-983C162-983C-11H-2,34-35Working half103.59877.850.2790.4657.712.812.7
162-983C162-983C-11H-2,64-65Working half103.89882.70
162-983B162-983B-11H-4,75-76Working half104.19887.540.2370.3146.08.25.9
162-983C162-983C-11H-2,120-121Working half104.44891.580.2610.3407.09.05.9
162-983B162-983B-11H-3,02-3Working half104.74894.92
162-983C162-983C-11H-3,65-66Working half105.38898.860.2370.3376.08.97.5
162-983C162-983C-11H-3,135-136Working half106.08902.560.3250.3569.79.42.3
162-983C162-983C-11H-4,50-51Working half106.74909.270.3450.37910.510.12.4
162-983C162-983C-11H-4,110-111Working half107.34917.010.3010.3878.710.46.2
162-983C162-983C-11H-5,20-21Working half107.94921.840.3000.3178.68.31.3
162-983C162-983C-11H-5,84-85Working half108.59927.070.2290.3345.78.87.8
162-983C162-983C-11H-5,144-145Working half109.19931.900.3180.3589.49.52.9
162-983B162-983B-12H-1,30-31Working half109.79936.730.2320.3435.89.18.2
162-983B162-983B-12H-1,90-91Working half110.39941.560.3250.3949.710.64.9
162-983B162-983B-12H-2,0-1Working half110.99946.620.3440.40810.511.04.5
162-983B162-983B-12H-2,60-61Working half111.59950.290.3560.41611.011.34.2
162-983B162-983B-12H-2,124-125Working half112.24954.000.3190.4099.411.16.4
162-983C162-983C-12H-1,72-73Working half112.95963.640.3150.3829.310.24.8
162-983C162-983C-12H-2,17-18Working half113.90967.430.1510.3642.49.715.6
162-983C162-983C-12H-2,107-108Working half114.80971.010.2580.3716.99.98.2
162-983C162-983C-12H-3,52-53Working half115.75974.800.3410.38310.310.33.1
162-983C162-983C-12H-3,142-143Working half116.65983.160.0140.334-3.38.824.0
162-983C162-983C-12H-4,62-63Working half117.35988.110.1620.3542.99.414.2
162-983C162-983C-12H-4,137-138Working half118.10990.860.1640.3473.09.213.6
162-983C162-983C-12H-5,57-58Working half118.80993.430.3130.4049.210.96.4
162-983C162-983C-12H-5,127-128Working half119.50996.000.3230.4129.611.26.3
162-983C162-983C-12H-6,52-53Working half120.251005.000.3930.42812.511.62.5
162-983C162-983C-12H-6,122-123Working half120.951010.300.2860.3898.010.57.4
162-983B162-983B-13H-2,50-51Working half121.711014.500.2720.3747.510.07.4
162-983B162-983B-13H-2,124-125Working half122.461018.800.2680.3697.39.87.4
162-983B162-983B-13H-3,50-51Working half123.211025.200.3060.3478.99.23.1
162-983C162-983C-13H-2,22-23Working half123.961033.000.2960.3718.49.95.5
162-983C162-983C-13H-2,102-103Working half124.761045.000.2690.4027.310.99.5
162-983C162-983C-13H-3,37-38Working half125.611051.500.3850.43312.211.83.3
162-983C162-983C-13H-3,117-118Working half126.411056.400.4280.45314.012.41.7
162-983C162-983C-13H-4,52-53Working half127.261058.380.3530.40510.811.03.7
162-983C162-983C-13H-4,137-138Working half128.111060.500.3440.37610.510.12.3
162-983A 162-983A-13H-4,92-93Working half128.931062.400.2280.3515.69.39.1
162-983A162-983A-13H-5,80-81Working half130.331065.440.3440.43510.411.96.4
162-983B162-983B-14H-2,24-25Working half132.131073.400.3670.39411.410.61.9
162-983B162-983B-14H-2,134-140Working half133.231080.250.5340.54118.415.10.5
162-983C162-983C-14H-2,10-11Working half133.951084.700.4510.46714.912.81.1
162-983C162-983C-14H-2,80-81Working half134.651089.000.4300.44714.012.21.2
162-983C162-983C-14H-3,2-3Working half135.351093.400.3240.4199.611.46.8
162-983C162-983C-14H-3,70-71Working half136.051097.600.2660.3647.29.77.2
162-983C162-983C-14H-3,134-135Working half136.701103.100.1670.2903.17.59.5
162-983C162-983C-14H-4,54-55Working half137.401109.200.3290.4009.810.85.1
162-983C162-983C-14H-4,120-121Working half138.051114.700.3340.34910.09.21.2
162-983C162-983C-14H-5,34-35Working half138.701120.300.3680.36811.59.80.0
162-983C162-983C-14H-5,104-105Working half139.401125.160.2680.2947.37.62.0
162-983C162-983C-14H-6,21-22Working half140.051134.400.3300.3579.99.52.1
162-983C162-983C-14H-6,90-91Working half140.751143.600.2390.2486.16.20.7
162-983B162-983B-15H-1,70-71Working half141.371147.100.3170.3179.38.30.0
162-983B162-983B-15H-1,140-141Working half142.071151.250.3160.3519.39.32.6
162-983C162-983C-15H-1,0-1Working half142.741154.800.5130.52217.514.50.6
162-983B162-983B-15H-2,124-125Working half143.421158.700.2840.3658.09.75.9
162-983C162-983C-15H-1,134-135Working half144.091162.500.4180.41813.611.30.0
162-983C162-983C-15H-2,50-51Working half144.741166.100.3500.36710.79.81.2
162-983C162-983C-15H-2,114-115Working half145.391169.800.4440.45714.612.50.9
162-983C162-983C-15H-3,44-45Working half146.171174.190.4050.41813.011.30.9
162-983C162-983C-15H-3,120-121Working half146.951178.750.4440.47014.612.91.8
162-983C162-983C-15H-4,48-49Working half147.731183.050.4060.46213.012.73.8
162-983C162-983C-15H-4,128-129Working half148.511187.440.4510.49714.913.73.0
162-983C162-983C-15H-5,56-57Working half149.291191.850.4520.45215.012.40.0
162-983C162-983C-15H-5,132-133Working half150.061196.010.3650.36511.49.70.0
162-983C162-983C-15H-6,60-61Working half150.841201.470.2740.4107.511.19.7
162-983C162-983C-15H-6,140-141Working half151.621206.880.2500.3496.59.27.3
162-983C162-983C-15H-CC,4-5Working half152.401212.310.5110.51117.414.10.0
162-983C162-983C-16H-1,52-53Working half153.181217.770.2990.3098.68.00.8
162-983C162-983C-16H-1,132-133Working half153.961223.230.4020.41812.911.31.1
162-983C162-983C-16H-2,60-61Working half154.741228.610.4240.44013.812.01.1
162-983C162-983C-16H-2,136-137Working half155.521234.310.4010.40112.910.80.0
162-983C162-983C-16H-3,72-73Working half156.381238.530.3750.40611.711.02.2
162-983C162-983C-16H-4,4-5Working half157.191242.450.2090.3064.88.07.5
162-983C162-983C-16H-4,88-89Working half158.021252.940.2220.3595.49.610.1
162-983C162-983C-16H-5,20-21Working half158.861259.220.2860.3618.09.65.5
162-983C162-983C-16H-5,104-105Working half159.691265.450.2180.3125.28.17.2
162-983C162-983C-16H-6,40-41Working half160.531271.460.1860.3263.98.510.5
162-983C162-983C-16H-6,124-125Working half161.371277.970.3950.44812.612.33.7
162-983C162-983C-16H-7,56-57Working half162.201284.27
162-983C162-983C-17H-1,12-13Working half163.041290.650.3190.3549.49.42.6
162-983C162-983C-17H-1,96-97Working half163.871296.980.2740.2837.67.30.7
162-983C162-983C-17H-2,28-29Working half164.711303.500.4030.40312.910.90.0
162-983C162-983C-17H-2,112-113Working half165.541309.830.4360.43614.311.90.0
162-983B162-983B-17H-3,44-45Working half166.381315.950.4830.50816.214.11.7
162-983C162-983C-17H-3,128-129Working half167.221320.760.4760.50216.013.91.7
162-983C162-983C-17H-4,64-65Working half168.051325.600.2130.4465.012.216.1
162-983C162-983C-17H-4,144-145Working half168.891330.530.4320.43214.111.80.0
162-983C162-983C-17H-5,80-81Working half169.721335.040.2380.2386.05.90.0
162-983C162-983C-17H-6,12-13Working half170.561339.240.2330.3375.88.97.8
162-983C162-983C-17H-6,96-97Working half171.391343.540.4200.42013.611.40.0
162-983C162-983C-17H-7,32-33Working half172.231346.900.3880.39112.310.50.2
162-983C162-983C-18H-1,40-41Working half173.061350.180.4820.48216.213.30.0
162-983C162-983C-18H-1,124-125Working half173.901353.560.5380.53818.615.00.0
162-983C162-983C-18H-2,56-57Working half174.741357.310.4320.47714.113.13.0
162-983C162-983C-18H-2,140-141Working half175.571360.900.4360.44214.312.10.4
162-983C162-983C-18H-3,76-77Working half176.411364.540.3390.36710.39.82.0
162-983C162-983C-18H-4,8-9Working half177.241368.650.3830.38312.110.30.0
162-983C162-983C-18H-4,92-93Working half178.081373.700.3400.43510.311.86.6
162-983C162-983C-18H-5,24-25Working half178.911382.240.2720.2727.56.90.0
162-983C162-983C-18H-5,108-109Working half179.751396.120.3040.3778.810.15.3
162-983C162-983C-18H-6,40-41Working half180.581402.660.3240.3249.68.50.0
162-983C162-983C-18H-6,124-125Working half181.421406.220.3820.41312.011.22.2
162-983C162-983C-18H-7,60-61Working half182.261409.680.3360.33710.18.90.1
162-983A162-983A-18H-6,48-49Working half183.091413.170.2720.3427.59.05.2
162-983C162-983C-19H-1,48-49Working half183.931416.750.3400.34510.39.10.4
162-983C162-983C-19H-1,132-133Working half184.761420.970.2880.4388.111.910.5
162-983C162-983C-19H-2,68-69Working half185.601425.250.2850.2858.07.30.0
162-983C162-983C-19H-3,0-1Working half186.431429.400.3880.38812.310.40.0
162-983C162-983C-19H-3,84-85Working half187.271433.780.3900.39012.410.50.0
162-983C162-983C-19H-4,16-17Working half188.111436.720.3700.38511.510.31.1
162-983C162-983C-19H-4,100-101Working half188.941440.090.4880.48816.513.50.0
162-983C162-983C-19H-5,36-37Working half189.781443.080.3860.38612.210.40.0
162-983C162-983C-19H-5,116-117Working half190.611446.330.4000.40012.810.80.0
162-983C162-983C-19H-6,52-53Working half191.451449.240.3220.3529.59.32.2
162-983C162-983C-19H-6,136-137Working half192.281453.45
162-983C162-983C-19H-7,68-69Working half193.121457.710.3710.37111.69.90.0
162-983B162-983B-20H-1,88-89Working half193.951462.510.2320.2735.86.93.2
162-983B162-983B-20H-1,104-105Working half194.791467.370.2390.2886.17.43.8
162-983B162-983B-20H-2,40-41Working half195.631472.080.3760.39011.810.51.1
162-983B162-983B-20H-2,120-121Working half196.461476.610.4890.48916.513.50.0
162-983B162-983B-20H-3,56-57Working half197.301481.270.3890.38912.310.50.0
162-983B162-983B-20H-3,140-141Working half198.131485.520.3630.37511.310.00.9
162-983B162-983B-20H-4,72-73Working half198.971491.440.5020.50217.113.90.0
162-983B162-983B-20H-5,4-5Working half199.801498.080.3370.44210.212.07.3
162-983B162-983B-20H-5,88-89Working half200.641504.800.3440.34410.59.10.0